Class / Patent application number | Description | Number of patent applications / Date published |
353097000 | LIGHT SHIELD, MASK, HOOD, OR DIAPHRAGM | 53 |
20080225242 | Protection type display device - A projection-type display device includes a shielding unit and image signal correction units that divide the picture plane of the spatial light modulation element into a plurality of areas and perform correction on the image signal applied to the spatial light modulation element according to the current shielding amount of the shielding unit for each of the plurality of areas. Accordingly, appropriate uniformity correction is performed even when there is a change in the angular distribution of light emitted from the spatial light modulation element and reaching the screen. | 09-18-2008 |
20080304021 | LIGHT-SHIELDING MODULE AND PROJECTION APPARATUS USING THE SAME - A light-shielding module including a bracket, a pendulous member, a shielding member, a first magnet, a second magnet and a first coil is provided. The pendulous member has a first end and a second end opposite to each other and is pivoted on the bracket. The first end extends along a direction from a pivoting place of the pendulous member to a top of the bracket. The shielding member is connected to the first end. The first magnet is disposed at the pendulous member and located between the pivoting place and the first end. The second magnet is disposed at the pendulous member and adjacent to the second end. A mass-of-center of the second magnet is located beside a center line passing a center-of-mass of the first magnet and the pivoting center. The first coil is disposed on one of the first side wall and the second side wall. | 12-11-2008 |
20080304022 | Projection display - The invention provides a projection display that achieves continuous light amount control with ease and without causing unevenness of illumination of light applied to a light valve responsive to a video signal, thereby allowing constant image display with satisfactory contrast. The projection display of the invention includes a light valve ( | 12-11-2008 |
20080316439 | ILLUMINATION SYSTEM AND PROJECTION SYSTEM INCORPORATING THE SAME - An illumination system and a projection system incorporating same are disclosed. The illumination system includes a two-dimensional array of independently operable light sources. Each light source illuminates substantially the entire active area of a pixelated optical light modulator. Each light source emits light in different emission directions. Each emission direction is directed to a respective location in the active area. Each pixel in the active area is illuminated by an incident cone of light from the two-dimensional array of independently operable light sources. The cone has a cone angle and includes at least one light ray from each light source. The cone angle of at least one such cone of light can be controlled by adjusting the intensity of one or more of the independently operable light sources. | 12-25-2008 |
20090051885 | LIGHT SHIELD USED IN PROJECTOR - A projector includes a casing, a light source, and a heat dissipation device. The light source and the heat dissipation device are installed inside the casing. Two openings are formed at two sides of the casing opposing to the light source. A light shield is positioned on one of the two openings. The light shield has a fixing plate, and a plurality of first parallel light-shielding plates and a plurality of second parallel light-shielding plates for blocking light leaking from the openings. | 02-26-2009 |
20090103057 | AUTOMATIC IRIS DIAPHRAGM MODULE - An automatic iris diaphragm module is adapted to a projector having a casing, and is capable of adjusting a size of luminous flux of a light source of the projector. The automatic iris diaphragm module is provided with a chassis, a fixed mask, a movable mask, a drive rack, and a motor. The chassis is fixed on the casing. The fixed mask is fixed on the chassis and has an opening. The movable mask is slidably disposed on the fixed mask. The drive rack is fixed on the movable mask. The motor is fixed on the chassis and has a driving gear engaging with the drive rack for driving the drive rack to make the movable mask slide relative to the fixed mask, for adjusting the size of the luminous flux of the light source through the opening. | 04-23-2009 |
20090122277 | PROJECTION LENS WITH EXTERIOR STOP - The disclosed embodiments relate to a system and method for medium wide-angle projection system. An exemplary embodiment of the present technique comprises an imaging system configured to create an image, a lens having a front surface and a back surface, the lens configured to receive an image on the back surface and produce a medium wide-angle representation of the image on the front surface, and an aperture stop positioned adjacent to the front surface of the lens to capture the medium wide-angle representation of the image from the lens. | 05-14-2009 |
20090201469 | ILLUMINATION SYSTEM - The present invention relates to an illumination system ( | 08-13-2009 |
20090237626 | PROJECTION OPTICAL SYSTEM AND LIGHT AMOUNT ADJUSTING COMPONENT USED IN THE SAME - A light amount adjusting component adapted a projection optical system is provided. The light amount adjusting component has a light incident surface upon which a light beam impinges, and the light incident surface is provided with a surface structure for irregularly dispersing the light beam. A slot that permits the light beam to pass therethrough and enter a light-receiving element is formed on the light amount adjusting component, and a width of the slot changes along an extension direction of the slot to allow control of the amount of the light beam entering the light-receiving element when the light amount adjusting component moves or rotates. | 09-24-2009 |
20090244498 | PROJECTION APPARATUS AND IMAGE DISPLAY APPARATUS - A projection apparatus includes a first optical system, an aperture disposed on the light exiting-side of the first optical system, a second optical system disposed on the light exiting-side of the aperture, and a reflector disposed on the optical path between the first optical system and the second optical system, the reflector having a reflection surface that reflects the light having exited from the first optical system toward the second optical system. The optical axis of the second optical system is disposed along the optical axis of the first optical system. The reflection surface of the reflector is disposed along the optical axis of the first optical system. At least part of the first and second optical systems that is on the side opposite the reflection surface of the reflector is cut off. | 10-01-2009 |
20090262312 | PROJECTION SYSTEM AND OPTICAL SHUTTER - An exemplary projection system includes a light source, a color wheel, an optical channel, a lens set, an image generator, and a projection lens all located along an optical pathway of the projection system. The projection system further includes an optical shutter. The optical shutter includes a shutter element and a motor for rotating the shutter element. The shutter element includes a transparent board and a light-shielding film formed on a surface of the transparent board. The light-shielding film has a notch for light to pass through. The light-shielding film is very light in weight relative to the transparent board, thus maintaining a rotational balance of the shutter element. | 10-22-2009 |
20090323034 | Optical Unit and Projection Type Display Apparatus for Displaying an Image - To suppress the reduction of contrast caused by reduction of contrast in the case where a projection type display apparatus for displaying an image is used in a dark place. In a projection type display apparatus for displaying an image which includes a liquid crystal display element unit that modulates and emits incident light, an illumination optical system that allows emission light emitting from a light source to enter the liquid crystal display element unit, and a projection optical system that projects the emission light emitting from the liquid crystal display element unit to a screen, an optical unit includes an iris unit in which light shielding plates shut the amount of light entering the liquid crystal display element unit to be narrowed down as the brightness level of image light projected from the projection optical system is lower, and an open/close angle of each light shielding plate is set at smaller than 90 degrees. | 12-31-2009 |
20100045944 | PROJECTION DISPLAY APPARATUS - A projection display apparatus includes a light valve, a light source for producing light directed to the light valve, an integrator lens disposed in an optical path extending from the light source to the light valve and including a first lens array and a second lens array, and a light amount adjustment mechanism disposed in the optical path between the first lens array and the second lens array. The light amount adjusting mechanism includes a pair of light shielding elements pivoting in the form of a pair of double doors. The pair of light shielding elements have an opening formed in a region of tip portions thereof which corresponds to lens cells in contact with the optical axis of the second lens array. A region of the opening corresponding to one lens cell in contact with the optical axis of the second lens array is of a triangular configuration. | 02-25-2010 |
20100066984 | DISPLAY DEVICE AND MOBILE APPARATUS - A display device is provided that includes: a projection unit emitting a light flux including image information; and a divergence angle controlling unit controlling a divergence angle of the light flux emitted from the projection unit to not more than a prescribed angle. The divergence angle controlling unit includes a transmission unit transmitting the light flux emitted from the projection unit and a light shielding unit shielding part of the light flux, and the part of the light flux is shielded by the light shielding unit so that the divergence angle of the light flux is controlled to not more than a prescribed angle. | 03-18-2010 |
20100165306 | BEAM PROJECTION SYSTEMS AND METHODS - Throughput efficiency of an optical system is enhanced by using a directional light source coupled to a non-imaging optical element matched to a size and acceptance angle of an imaging lens. In various embodiments, a beam projection system and accompanying method are described that include a lamp body formed from a dielectric material. A bulb, placed adjacent to the lamp body, has a fill that forms a plasma when RF power is coupled to the fill from the lamp body. An optical train is optically coupled to the bulb to transform light generated by the plasma. The optical train includes a non-imaging optical element, an aperture, and at least one imaging lens element. | 07-01-2010 |
20100238419 | LIGHT CONTROL DEVICE AND ILLUMINATION DEVICE FOR A PROJECTOR INCLUDING SAME - In at least one embodiment of the disclosure, a light control device includes a light blocking module to block a luminous flux passing through the light control device in a direction parallel to a system optical axis. The light blocking module includes a first and a second light blocking member. The first light blocking member includes a cutout portion at an end near a system optical axis, the first light blocking member configured so as to change a size of an area blocking the luminous flux in accordance with an opening and closing operation of the light blocking module. The second light blocking member is disposed in proximity to the first light blocking member and configured so as to increasingly block the luminous flux from passing through the cutout portion of the first light blocking member in accordance with the closing operation of the light blocking module. | 09-23-2010 |
20100245782 | PROJECTION TYPE IMAGE DISPLAY APPARATUS - According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells. | 09-30-2010 |
20100271601 | PROJECTING ZOOM LENS AND PROJECTION TYPE DISPLAY APPARATUS - The projecting zoom lens includes, sequentially from its magnification side, a negative first lens group, a positive second lens group, a negative third lens group, a positive fourth lens group, a positive or negative fifth lens group, and a positive six lens group, while the reduction side of the projecting zoom lens is formed as a telecentric system. When the power of the zoom lens is varied, the first lens group and sixth lens group are fixed, while the second to fifth lens groups move. In such power varying operation, the movement of the third lens group advances from the magnification side to the reduction side as the zoom lens goes from the wide angle end toward the tele end. | 10-28-2010 |
20100328631 | PROJECTOR - A projector includes: an illuminator that emits an illumination light flux; a light control mechanism that blocks at least part of the illumination light from the illuminator; a light modulator illuminated with the illumination light from the illuminator; a projection system capable of projecting modulated light formed by the light modulator and switching the f number when the modulated light is projected; and a control unit that controls the open/close state of the light control mechanism in accordance with the f number of the projection system so that illumination light having an angular distribution corresponding to the f number of the projection system is incident on the projection system. | 12-30-2010 |
20110001939 | OPTICAL SYSTEM - An optical system is provided which includes an illumination system with a light source, a lens member which guides light from the light source, and a mirror member; an image unit on which an image is formed and on which light from the illumination system is incident; a projection system which magnifies and projects the image formed on the image unit; and a blocking unit which is mounted to the mirror member of the illumination system and partially blocks light from the light source that is directed to the mirror member. | 01-06-2011 |
20110075114 | PROJECTION SYSTEM HAVING A VIRTUAL MASK - A projection system includes a projection screen defining a shape and a projector configured to project an image onto the projection screen. The projector may project a static or dynamic image that has substantially the same shape as the projection screen or otherwise block portions of the projected image that are projected outside of the projection screen with the aid of a virtual mask. The virtual mask and the projection screen may be created based on a virtual shape template that defines the desired shape for the projection screen, such as with a vector outline. In some embodiments, the virtual mask and the projection screen are created based on the same virtual shape template. The virtual shape template may define a cutting path for extracting the projection screen from a suitable material. | 03-31-2011 |
20110096302 | PROJECTOR - In at least one embodiment of the disclosure, a projector includes a light shield unit that shields a portion of a light emitted from a light source. The light shield unit is driven by a drive mechanism and rotates around a predetermined rotation axis to change a size of a light shield area. The light shield unit includes a leading edge having a contour defined by a plurality of first edges and a second edge disposed between the first edges. The second edge configured so as to be shifted toward the light source and away from the first edges during rotation of the light shield unit. | 04-28-2011 |
20110176120 | PROJECTION SYSTEM - A projection system having a first tilting mirror matrix, a second tilting mirror matrix, and an imaging lens, which projects the first tilting mirror matrix onto the second tilting mirror matrix, wherein each tilting mirror matrix has multiple tilting mirrors, the tilting axes of which are positioned in a modulator surface plane. The imaging lens includes a first lens and an imaging mirror, and the imaging mirror forms an aperture stop of the imaging lens, wherein the aperture diaphragm includes an uneven angle of 90° together with the normal of the modulator surface of the first tilting mirror matrix without taking into account any optical path folds. | 07-21-2011 |
20110222026 | DIAPHRAGM APPARATUS FOR PROJECTORS - When a rotation member is rotated clockwise by a stepping motor, one main operation member is rotated counterclockwise through a link member and the other main operation member is rotated clockwise by said main operation member through the link member. Also, one sub operation member is rotated counterclockwise by said main operation member through the link member, and the other sub operation member is rotated clockwise by the other main operation member through the link member. This causes the amount of overlap between a main split blade mounted to said main operation member and a sub split blade mounted to said sub operation member to be increased and also causes the amount of overlap between a main split blade mounted to the other main operation member and a sub split blade mounted to the other sub operation member to be also increased. As a result, the aperture opening formed between the two main split blades is increased. | 09-15-2011 |
20110235000 | PROJECTOR - A projector includes: an illuminator that emits illumination light; a light modulator that modulates the illumination light emitted from the illuminator; and a projection system that includes a plurality of lenses and a diaphragm and projects the light modulated by the light modulator, wherein the projection system includes a support that supports at least one of the following lenses: a lens located on the object side of the diaphragm in the nearest position therefrom and a lens located on the image side of the diaphragm in the nearest position therefrom, and the support partially supports the outer circumference of the lens. | 09-29-2011 |
20110235001 | LENS BARREL ASSEMBLY HAVING IRIS DIAPHRAGM DEVICE AND PROJECTOR - A lens barrel assembly has a first groove formed in a stationary barrel. A second groove is formed in a rotatable barrel. A diaphragm control plate portion is disposed between an inner surface of the rotatable barrel and an iris diaphragm device in a rotatable manner in a circumferential direction, has an end portion connected to a driving ring. An engaging groove is formed in the diaphragm control plate portion to extend along the optical axis. An operable aperture ring is disposed outside the stationary barrel. A pin device has first and second end portions, the first end portion being secured fixedly to the aperture ring, the second end portion being inserted through the first and second grooves and the engaging groove, for operating upon rotation of the aperture ring to cause the engaging groove to rotate the diaphragm control plate portion to actuate the driving ring. | 09-29-2011 |
20110292354 | Device for Projecting an Image on a Surface and Device for Moving Said Image - The invention relates to a device for projecting an image on a surface, comprising: a light source generating a light beam; a mask arranged in the path of the light beam; a lens arranged behind the mask to focus the image of the mask on a surface, wherein the surface is not parallel to the lens, wherein at substantially each position along the edges of the mask the distance v to the lens and the distance b of the corresponding position at the edges of the image of the mask to the lens correspond substantially to the formula 1/v+1/b=1/f, wherein f is the focal length of the lengths. The invention also relates to a device for moving the image on the surface. | 12-01-2011 |
20110299048 | PROJECTION TYPE IMAGE DISPLAY APPARATUS - According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells. | 12-08-2011 |
20120013858 | DIMMING DEVICE AND PROJECTOR-TYPE DISPLAY APPARATUS COMPRISING THE SAME - A dimmer has a driving source, a driven body that is reciprocatingly moved by driving force generated by the driving source, and a transmission mechanism that transmits the driving force generated by the driving source. The transmission mechanism includes at least one rotary gear, and a conversion gear that converts the rotational motion of the rotary gear into linear motion. The light shielding plate is integrally provided with a drive pin in parallel with a rotating shaft of a light shielding plate. The driven body engages with the drive pin. The drive pin is rotated about the rotating shaft of the light shielding plate in association with the reciprocating movement of the driven body to cause the light shielding plate to rotate. | 01-19-2012 |
20120092629 | PROJECTION DEVICE - A projection device including an optical engine base, a light source, a light valve, and a projection lens is provided. The light source includes a component holder, a light component, and light lens. The component holder is assembled to the optical engine base, and has a component slot and a lens slot communicated with the component slot. The lens slot has at least one slot section plane. The light component is disposed within the component slot. The light lens is disposed within the lens slot, and adapted to form the light generated by the light component into a lighting beam. The light valve and the projection lens are assembled to the optical engine base. The light valve is adapted to convert the lighting beam into an image beam. The projection lens is adapted to convert the image beam into a projection beam. | 04-19-2012 |
20120162616 | PROJECTOR WITH EYE PROTECTION MECHANISM - A projector includes a case, a projection lens, a shielding plate, and a controller received in the case. The case includes a sidewall defining an aperture. The projection lens is used for projecting a cone of light rays which passes through the aperture and a projection area. The shield plate is positioned on the sidewall. The driver is used for driving the shield plate to any of desired positions ranging from a first position in which the shield plate exposes the aperture to a second position in which the shield plate shields the aperture. The barrier detection device is used for generating a first signal if detecting no barrier presents in the projection area and generating a second signal if detecting a barrier presents in the projection area. The controller is used for controlling the driver to drive the shield plate to the first position if receiving the first signal. | 06-28-2012 |
20120236268 | PROJECTION SYSTEM HAVING A VIRTUAL MASK - A projection system includes a projection screen defining a shape and a projector configured to project an image onto the projection screen. The projector may project a static or dynamic image that has substantially the same shape as the projection screen or otherwise block portions of the projected image that are projected outside of the projection screen with the aid of a virtual mask. The virtual mask and the projection screen may be created based on a virtual shape template that defines the desired shape for the projection screen, such as with a vector outline. In some embodiments, the virtual mask and the projection screen are created based on the same virtual shape template. The virtual shape template may define a cutting path for extracting the projection screen from a suitable material. | 09-20-2012 |
20130027676 | OPTICAL PROJECTION SYSTEM AND PROJECTOR INCLUDING THE SAME - A light modulation device side lens group has different power in the longitudinal and lateral directions and different magnifications in the longitudinal and lateral directions. Therefore, it is possible to make the aspect ratio of an image of the liquid crystal panel different from the aspect ratio of an image projected on a screen. That is, conversion can be performed on an aspect ratio which is a ratio of width to height using the optical projection system. At this time, a distance p and a distance p′ between a diaphragm and the screen SC side end surface of the light modulation device side lens group satisfies predetermined conditional expressions, so it is possible to achieve a predetermined or higher telecentricity in both states, that is, a first operating state and a second operating state. | 01-31-2013 |
20130038846 | PROJECTION DISPLAY DEVICE - A projection display device has an illumination optical system that includes a light-intensity equalization element, a first optical system, and an aperture regulation member. The aperture regulation member is disposed at a position that is not optically conjugate with the screen, and the aperture regulation member has at least one of the following, using measured or calculated relative illuminances at each of multiple segments of the image formation region or screen: an aperture expansion part provided at a position corresponding to a segment with a low relative illuminance, the aperture expansion part being a cutout that narrows the light-blocking section and widens the aperture section; an aperture contraction part provided at a position corresponding to a segment with a high relative illuminance, the aperture contraction part being a protrusion that widens the light-blocking section and narrows the aperture section. | 02-14-2013 |
20130120719 | LIGHT SOURCE MODULE AND PROJECTION DEVICE USING THE SAME - A light source module includes a shell, a fixed ring, an optical element, a first cover and a light-emitting element. The shell is formed as a tubular shape. The fixed ring, the optical element and the light-emitting element are all received in an inside of the shell, and the first cover is disposed at an end of the shell. In addition, the shell has a first stop part disposed in the inside of the shell, the optical element is disposed between the first stop part and the fixed ring, and the optical element is leant against the first stop part and the fixed ring. The light-emitting element is disposed between the fixed ring and the first cover, and is leant against the fixed ring and the first cover. A projection device using the source light module is also provided. | 05-16-2013 |
20130148087 | PROJECTION SYSTEM HAVING A VIRTUAL MASK - A projection system includes a projection screen defining a shape and a projector configured to project an image onto the projection screen. The projector may project a static or dynamic image that has substantially the same shape as the projection screen or otherwise block portions of the projected image that are projected outside of the projection screen with the aid of a virtual mask. The virtual mask and the projection screen may be created based on a virtual shape template that defines the desired shape for the projection screen, such as with a vector outline. In some embodiments, the virtual mask and the projection screen are created based on the same virtual shape template. The virtual shape template may define a cutting path for extracting the projection screen from a suitable material. | 06-13-2013 |
20130229636 | PROJECTION TYPE IMAGE DISPLAY APPARATUS - According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells. | 09-05-2013 |
20130242274 | PROJECTION SYSTEM - A projection system having a first tilting mirror matrix, a second tilting mirror matrix, and an imaging lens, which projects the first tilting mirror matrix onto the second tilting mirror matrix, wherein each tilting mirror matrix has multiple tilting mirrors, the tilting axes of which are positioned in a modulator surface plane. The imaging lens includes a first lens and an imaging mirror, and the imaging mirror forms an aperture stop of the imaging lens, wherein the aperture diaphragm includes an angle of other than 90° with the normal of the modulator surface of the first tilting mirror matrix without taking into account any optical path folds. | 09-19-2013 |
20130308106 | PROJECTION OPTICAL SYSTEM - A projection optical system includes first and second optical systems. The first optical system includes a transmissive-refractive element and the second optical system includes a reflective-refractive element. An image formed by a spatial light modulator is projected by the projection optical system on a projection surface. A light beam that travels along an optical path that leads from the second optical system to the projection surface in an optical path between a center of the image formed by the spatial light modulator and the projection surface is projected at an angle with respect to a normal to the projection surface. An optical axis of the first optical system is folded to a folded position by an optical path deflecting unit in an area of the first optical system where the light beam entering the optical path deflecting unit is a converging light beam or a substantially parallel light beam. | 11-21-2013 |
20130329197 | OPTICAL PROJECTION DEVICE - A simple optical projection device with a high luminous efficacy has a point light source, a projection screen, a mask that is arranged in the light path upstream of the projection screen and is light-transmissive in some areas, and a light focusing optical lens arranged between the point light source and the mask. The optical lens is selected such that the prolongations of the emerging beams of the optical lens on the side thereof facing the point light source intersect in a virtual perspective center which is more remote from the lens than the point light source. | 12-12-2013 |
20130329198 | PROJECTION OPTICAL APPARATUS AND IMAGE PROJECTION APPARATUS - A projection optical apparatus projects an image generated by an image generator onto a projection face by passing the image through a plurality of optical elements and an exit window. The projection optical apparatus includes an invisible-light reduction device to cut invisible light. The invisible-light reduction device prevents intrusion of the invisible light into the projection optical apparatus. | 12-12-2013 |
20140002803 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTING APPARATUS | 01-02-2014 |
20140063472 | Laser Scanning Projection Apparatus with Phase Detection and Compensation - A laser scanning projection apparatus includes an illumination unit, a projection surface, a scanning mirror, a projection window, an optical sensor, and a controlling unit. The projection window includes a transmissible part and a blocking part. A reflection-differential pattern is formed on the blocking part. When the laser beam reflected by the scanning mirror is projected on the transmissible part, the laser beam is transmitted through the transmissible part and projected on the projection surface. When the laser beam reflected by the scanning mirror is projected on the reflection-differential pattern, a reflective beam with different intensities is reflected by the reflection-differential pattern. The controlling unit calculates a phase difference between an actual projection position and a predetermined projection position of the laser beam according to the sensing signal, and compensating a subsequent image frame according to the phase difference. | 03-06-2014 |
20140160447 | IMAGE DISPLAY DEVICE - An image display device includes a holder and an optical component. The holder has an optical path. The optical component is mounted to the holder such that the optical component is disposed in the optical path of the holder. The holder has a first portion with a first edge part and a second portion with a second edge part. The holder is integrally formed as a one-piece, unitary member. The first and second portions are axially and adjacently arranged relative to each other along an optical axis of the optical path of the holder. The first and second edge parts at least partially define a circumferential edge of an aperture that is arranged with respect to the optical component in the optical path of the holder. | 06-12-2014 |
20140176919 | PROJECTION SYSTEM AND PROJECTOR - A projection system includes: a relay system that focuses light having exited through a first image plane on a second image plane; and an enlarging system that enlarges and projects an image focused on the second image plane on a third image plane, wherein the relay system includes a first lens element on which the light having exited through the first image plane is incident, the first lens element having positive refracting power, a reflective member that reflects a light having passed through the first lens element, the reflective member having positive refracting power, and a second lens element on which a light reflected off the reflective member is incident and which focuses the light reflected off the reflective member on the second image plane, the second lens element having positive refracting power. | 06-26-2014 |
20140285779 | PROJECTION DISPLAY DEVICE - A projector | 09-25-2014 |
20140313491 | PROJECTION TYPE IMAGE DISPLAY APPARATUS WITH LIGHT MASKING - According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells. | 10-23-2014 |
20140333905 | PROJECTOR - A projector includes a light source, an image forming system adapted to form an image using light from the light source, a projection system adapted to project the image formed by the image forming system, and a dimming device including a light-blocking member adapted to move into and out of a light path between an exit end surface of the projection system and the light source, and adapted to control an intensity of the light emitted from the light source. The light-blocking member includes a first movable section having at least one light-transmitting section and a light-blocking section, and a second movable section adapted to block the light passed through the light-transmitting section. At least one radiator plate is provided to either one or both of the first movable section and the second movable section. | 11-13-2014 |
20150029474 | PROJECTIVE OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - A projective optical system comprises: a lens optical system including lenses; and a transmissive optical element having an anamorphic surface and being provided in an optical path between the lens optical system and a projected surface, wherein the transmissive optical element has a curvature with respect to a direction corresponding to a long side of a display screen of the image display element, and on a cross-sectional surface being perpendicular to the long side of the display screen, and with respect to light being emitted from the lens optical system and being incident to the transmissive optical element, a light intensity of a first light flux being incident to the transmissive optical element at a first incident angle is lower than a light intensity of a second light flux being incident to the transmissive optical element at a second incident angle being larger than the first incident angle. | 01-29-2015 |
20150042967 | PROJECTION HEAD FOR A LASER PROJECTOR - A projection head for a laser projector is provided that includes a fiber outcoupling with a relatively large distance between the fibers. The fiber outcoupling represents a possibility for being able to adjust the position of the crossing point between the light beams. Thus it is possible to place the crossing point on the polygonal facets of a polygonal mirror. As a result, only minor light losses occur and edge discolorations are reduced when projecting onto a projection surface. The lateral distance between the fibers is relatively large, amounting to several millimeters. Due to the large distance, it is possible to integrate additional adjustment device and use conventional fiber plugs for the individual fibers. | 02-12-2015 |
20160025954 | PROJECTION OPTICAL SYSTEM AND PROJECTION-TYPE IMAGE DISPLAY DEVICE - A projection optical system includes: a plurality of lenses; a lens frame that holds at least one lens of the plurality of lenses; a first diaphragm provided on the light incident side of the lens frame; and a second diaphragm provided on the light exiting side of the lens frame. | 01-28-2016 |
20160091721 | DISPLAY DEVICE - A display device of the disclosure includes a projector including optical elements to project images on left or right eye of an observer and a frame connected to the projector for mounting on the observer. With the frame mounted on the observer, at least part of the projector is placed in visual fields of the eyes, and length from tangent point between leftmost one among lines of sight of the left eye overlapping outline of at least the part and the outline to intersection between an imaginary line through the tangent point parallel to direction of pupillary distance of the observer and rightmost one among lines of sight of the right eye overlapping the outline is shorter than the pupillary distance in a top plan view of the display device. | 03-31-2016 |
20160116830 | PROJECTOR AND PROJECTING LENS OF THE PROJECTOR - A projector includes an image beam generator and a projecting lens. The projecting lens includes a relay system and a projection system. The relay system has a focusing set and a converging set, and the projection system has a projection lens group and a reflector. The image beam generator generates an image beam, and emits it to the projecting lens, and the image beam emits through the focusing set, the converging set, and the projection lens group in sequence, and then is reflected by the reflector to enter the projection lens group again. After leaving the projection lens group the image beam emits through a lens of the converging set, and then is projected onto a screen. | 04-28-2016 |