Class / Patent application number | Description | Number of patent applications / Date published |
359820000 | With temperature compensation or control | 43 |
20080253001 | Actuating Device Comprising Bimetal Disks - The invention relates to an actuating device comprising at least two coaxial bimetal disks and at least one axial strut arranged between the disks, the bimetal disks being mounted opposite each other and being deformable in opposite directions according to the thermal variations. The invention can be especially applied to the thermal compensation of an optical system. | 10-16-2008 |
20080253002 | Object lens unit and optical pickup device employing the unit - An object lens unit for an optical pickup device is disclosed. The object lens unit includes a first optical element positioned facing an optical information recording medium; a second optical element positioned on a light source side of the first optical element; and a frame in which the first optical element and the second optical element are fixed. The frame includes a first fitting portion and a second fitting portion, and has a prescribed clearance in a perpendicular direction to the optical axis between at least one of the first fitting portion of the frame and the first optical element, and the second fitting portion of the frame and the second optical element to adjust a position of at least one of the first optical element and the second optical element in a perpendicular direction to the optical axis. An optical pickup device including such object lens unit is also disclosed. | 10-16-2008 |
20080278833 | CAMERA MODULE - A camera module includes a lens assembly, a lens barrel, an image sensor, a hollow holder receiving the lens barrel and the image sensor, and a thermally deformable member. The lens assembly defines a first focal length with a first focus point at a first temperature and a second focal length with a second focus point at a second temperature on an optical axis associated therewith. The thermally deformable member has one end attached to the lens barrel and an opposite end attached to the holder. The thermally deformable member comprises a first sheet and a second sheet. Wherein at the second temperature, the second sheet bends toward the first sheet thereby moving the second focus point toward the first focus point and the image plane of the lens assembly with the second focal length toward the image sensor. | 11-13-2008 |
20080291555 | OPTICAL ELEMENT HOLDING APPARATUS, BARREL, EXPOSURE APPARATUS AND DEVICE MANUFACTURING METHOD - An optical element holding apparatus includes an aluminum buffer member accommodated in a stainless steel frame body and having a linear expansion coefficient differing from that of the frame body. The buffer member contacts a first member of a rotation link block. The frame body includes slits defining the rotation link block, a second connection block, a first connection block, and a displacement block. Drive force generated by expansion of the buffer member when the temperature changes is amplified by the rotation link block, the second connection block, the first connection block, and the displacement block and transmitted to the support member to move the support member toward the lens. | 11-27-2008 |
20080304168 | SYSTEM AND METHOD FOR FOCAL LENGTH STABILIZATION USING ACTIVE TEMPERATURE CONTROL - An optical metrological system having a heat-generating light source coaxially mounted near a heat-sensitive lens. The system uses a temperature sensor to monitor the lens temperature and a heating element to heat the lens such that the lens operating temperature is greater than a maximum operating temperature of the light source in order to stabilize the focal length of the lens. | 12-11-2008 |
20080316622 | SPHERICAL ABERRATION CONTROL METHOD AND RELATED APPARATUS - The invention discloses a spherical aberration control method for controlling spherical aberration of an optical device. The method includes: detecting a current ambient temperature of the optical device; and controlling the spherical aberration of the optical device according to the current ambient temperature. | 12-25-2008 |
20090002855 | THERMALLY CONTROLLED SOLID IMMERSION LENS FIXTURE - Embodiments allow for uniform die cooling or heating with a solid immersion lens equipped microscope over a larger temperature range than is currently attainable using liquid coolant. The SIL tip is insulated from the rest of the objective body to realize a controllable temperature. This thermal control may be done by convection or Joule heating. If the tip is to be cooled, cold gas may be injected through channels around the tip and fins. If the tip is to be heated, hot gas may be injected around the tip and fins | 01-01-2009 |
20090086342 | Optical unit - An optical unit is provided that can reduce changes in optical performance caused by thermal expansion and maintain desired optical performance, in addition reducing a number of components. | 04-02-2009 |
20090207510 | FLAME SCANNER COLLIMATOR BODY - A flame scanner collimator, which monitors flames produced by a fossil fuel fired combustion chamber, includes: a substantially cylindrical collimator body defining a hollow portion; a first chamber connected to a second chamber, the first and second chambers defining the hollow portion, the second chamber having a larger diameter than the first chamber; and a plurality of slots each extending in substantially a same direction as a longitudinal axis defining the body. Each slot extends through the body to the first and second chambers to allow cooling/purge air flow therethrough. | 08-20-2009 |
20090213478 | OPTICALLY ACCESSIBLE COVER - The present invention relates to a means for covering and to a device for performing processes and/or reactions involving at least one sample, which are conducted in a temperature-controlled environment and which require optical access to at least one sample. | 08-27-2009 |
20090296240 | Temperature compensation of optical systems - An optical system, in particular for use in the automobile sector, includes at least one compensation element for compensating at least one temperature-related dimension change in the optical system. The at least one compensation element includes a housing which is variable in length in at least one dimension, as well as a fluid expansion medium accommodated in the at least one housing. For example, the optical system may include at least one camera system, for example a video system, the at least one camera system including at least one camera base and at least one imaging system which is connected to the at least one camera base and having at least one optical axis as well as at least one imaging sensor. | 12-03-2009 |
20090310236 | LENS MODULE - An exemplary lens module includes a barrel, a lens received in the barrel, and a generally C-shaped fastening member rotatably received in the barrel. The barrel includes an inner surface and a protrusion formed on the inner surface thereof. The fastening member is sandwiched between the lens and the protrusion. The fastening member has a gap defined between two distal ends thereof. The protrusion is passable through the gap. The fastening member is rotatable in the barrel relative to the protrusion such that the gap is misaligned with the protrusion. | 12-17-2009 |
20100039714 | SYSTEM AND METHOD FOR FOCAL LENGTH STABILIZATION USING ACTIVE TEMPERATURE CONTROL - An optical metrological system having a heat-generating light source coaxially mounted near a heat-sensitive lens. The system uses a temperature sensor to monitor the lens temperature and a heating element to heat the lens such that the lens operating temperature is greater than a maximum operating temperature of the light source in order to stabilize the focal length of the lens. | 02-18-2010 |
20100067128 | SINGLE-USE LENS ASSEMBLY - An optical assembly includes an output optical element having a thermally conductive and optically transmissive material and a thermal conduit in thermal communication with the output optical element and having at least one surface configured to be in thermal communication with at least one heat dissipating surface of a light delivery apparatus. The optical assembly further includes a coupling portion configured to be placed in at least two states. In a first state, the coupling portion is attached to the apparatus such that the at least one surface of the thermal conduit is in thermal communication with the at least one heat dissipating surface. In a second state, the coupling portion is detached from the apparatus after having been attached to the apparatus in the first state and in which the coupling portion is configured to prevent re-attachment of the coupling portion to the apparatus. | 03-18-2010 |
20100079877 | LENS ASSEMBLY AND IMAGE-TAKING APPARATUS - A lens frame is made of ceramic having a linear expansion coefficient that is about the same as the linear expansion coefficient (5 to 10×10 | 04-01-2010 |
20100128367 | PROJECTION OBJECTIVE FOR A MICROLITHOGRAPHY APPARATUS AND METHOD - A projection objective for a microlithography apparatus with improved imaging properties is provided. A manipulator for a projection objective is provided. A microlithography apparatus including a projection objective of this type and/or a manipulator of this type is provided. A method for improving the imaging properties of a projection objective is provided. | 05-27-2010 |
20100165492 | LENS BARREL - A lens barrel includes a cam ring ( | 07-01-2010 |
20100182708 | OPTICAL PICKUP ACTUATOR - There is provided an optical pickup actuator for actuating a lens holder having an object lens according to an interaction between coils and magnets. The optical pickup actuator includes a lens-seating portion formed on the lens holder to support the object lens and a lens guide portion protruding from the lens-seating portion to securely support the object lens. The lens guide portion has an adhesive confining groove in which adhesive can be injected to securely fix the object lens. | 07-22-2010 |
20100214677 | Optical Element and Stress Athermalized Hard Contact Mount - There is disclosed an optical element having a first surface and a second surface bounded by a circular periphery. A rim having an inner surface may extend from the second surface proximate the periphery. At least a portion of the inner surface of the rim may be convex. | 08-26-2010 |
20100254031 | OPTICAL SYSTEM - A device for cooling optical components based on optical fibers for transmitting high optical power. The device includes one or more cavities with a flowing coolant to take care of optical power loss. The device includes a transmitting construction material having a low heat expansion coefficient arranged in direct connection with the optical components and arranged to transmit power loss radiation into the cavity which is flushed with the flowing coolant. The transmitting construction material is made as a transparent tube and surrounded by a tubular casing of a non-transparent material having a good absorption capacity so that the cavity is formed between the two materials. | 10-07-2010 |
20110032628 | DRIVE DEVICE - A drive device includes a setting unit | 02-10-2011 |
20110063740 | SUPPORTING DEVICE, OPTICAL APPARATUS, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD - The present invention provides a supporting device that supports an optical element, comprising: a first supporting member that is fixed to an outer circumference of the optical element; a plurality of members that is connected to an outer circumference of the first supporting member; and a second supporting member that supports the first supporting member via the plurality of members, wherein each of the plurality of members is configured such that the a rigidity thereof in a first direction inclined relative to a direction orthogonal to an optical axis of the optical element in a plane including the optical axis is lower than a rigidity thereof in each of two directions that are orthogonal to the first direction and that are, orthogonal to each other. | 03-17-2011 |
20110075279 | DEVICE FOR TEMPERATURE-DEPENDENT AXIAL MOVEMENT OF OPTICAL COMPONENTS - A device for the temperature-dependent axial movement of an optical component including a monolithic mounting unit having an outer mounting part forming a fixed holder having an axis and an inner mounting part forming a mount adapted to support the optical component. The mount is movable along the axis. A moving mechanism is connected to the fixed holder and the movable mount. The moving mechanism includes at least one external expansion element including a first material having a first coefficient of thermal expansion and at least one internal expansion element including a second material having a second coefficient of thermal expansion, where the first coefficient of thermal expansion is larger than the second coefficient of thermal expansion. A number of connecting links is disposed in a star-shaped formation and join a respective one of the at least one external expansion element to a respective one of the internal expansion element. Each connecting link is disposed at a prescribed pitch angle with respect to the axis that differs from 90°. | 03-31-2011 |
20110080663 | ADAPTIVE LASER BEAM SHAPING - Provided is an adaptive device for shaping a laser beam. The adaptive device includes a variable optical configuration. The variable optical configuration includes: an optical element and a temperature element in contact with the optical element. The adaptive device further includes a controller operatively coupled to the temperature element to apply at least one of heating and cooling to the optical element so as to alter a temperature profile of the optical element, thereby causing an optical property change thereof. | 04-07-2011 |
20110096419 | LENS DRIVING DEVICE AND CAMERA UNIT - A biasing spring is interposed between a coupling plate and a covering section while being compressed from its natural length. The biasing spring biases, by its resilient force, a lens unit toward a −Z side to bring a surface of the lens unit at the −Z side into contact with an abutment portion of a fixing frame section. When a temperature of an actuator is equal to or lower than a predetermined temperature, a biasing force of the biasing spring surpasses a force generated in the actuator, and thus the lens unit is not moved. When the actuator is heated up to a temperature equal to or higher than the predetermined temperature, the lens unit is continuously moved in the +Z direction. Thereby, movement of a lens due to a change of an environmental temperature can be prevented. | 04-28-2011 |
20110164330 | METHOD AND ARRANGEMENT FOR REDUCING THERMAL EFFECTS IN COMPACT ADJUSTABLE OPTICAL LENSES - The present invention provides thermal compensation for a lens assembly comprising a polymer lens body. Polymers do have different thermal expansion coefficients which makes it necessary to compensate for thermal expansions to keep optical characteristics of such lenses within specifications when used under different environmental conditions. Also, it is necessary to provide thermal compensation during manufacturing of such lenses due to high temperatures during manufacturing steps. | 07-07-2011 |
20110205644 | ATHERMAL LENS DEVICE - The athermal lens device includes lenses, a lens holding frame, a coil spring for pressing the lens holding frame toward an imaging surface direction, a ring formed by looping a round bar, and a lens barrel for containing them. The lens holding frame includes a pressing surface intersecting with an optical axis at the imaging surface side. The lens barrel has a sliding contact surface formed with a conical shape at an end of the imaging surface side of the lens container. The ring is made of an invar material whose thermal expansion coefficient is very small, and disposed between the sliding contact surface and the pressing surface formed with a plain shape. The ring is constantly pressed to the sliding contact surface by bias of the coil spring via the pressing surface. Position of the lens holding frame changes according to environmental temperature to correct focus point. | 08-25-2011 |
20110249351 | OPTICAL PICKUP ACTUATOR - There is provided an optical pickup actuator for actuating a lens holder having an object lens according to an interaction between coils and magnets. The optical pickup actuator includes a lens-seating portion formed on the lens holder to support the object lens and a lens guide portion protruding from the lens-seating portion to securely support the object lens. The lens guide portion has an adhesive confining groove in which adhesive can be injected to securely fix the object lens. | 10-13-2011 |
20110255183 | SUPPORTING DEVICE, OPTICAL APPARATUS, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD - The present invention provides a supporting device that supports an optical element, comprising: a first supporting member that is fixed to an outer circumference of the optical element; a plurality of members that is connected to an outer circumference of the first supporting member; and a second supporting member that supports the first supporting member via the plurality of members, wherein each of the plurality of members is configured such that the a rigidity thereof in a first direction inclined relative to a direction orthogonal to an optical axis of the optical element in a plane including the optical axis is lower than a rigidity thereof in each of two directions that are orthogonal to the first direction and that are orthogonal to each other. | 10-20-2011 |
20110273787 | APPARATUS FOR COMPENSATING AN IMAGING LENS - An imaging system ( | 11-10-2011 |
20110292525 | IMAGING DEVICE - In order to obtain stable lens positions to have an object imaged in focus when the temperature of lenses changes, an imaging device of the present invention comprises a system control section | 12-01-2011 |
20120194928 | EXHAUSTING STRUCTURE FOR LENS - The present invention provides an exhausting structure for lens. The exhausting structure is used for being disposed and fixed between a lens and an optical apparatus. The exhausting structure is formed with an air channel. The air channel has a first opening and a second opening. A projecting outline of the first opening in a projecting direction is separated from a projecting outline of the second opening in the projecting direction. Thereby, the air channel allows air to flow therethrough. Further, an air pressure caused by the change of the temperature in the exhausting structure can be released so as to prevent the air from pressing the lens or apparatus. The exhausting structure can also prevent a light from entering into the base through the air channel. | 08-02-2012 |
20120229924 | LENS HOLDER AND CAMERA MODULE USING THE SAME - A camera module includes a base board and a lens holder mounted on the base board. The lens holder includes a main body and at least one ventilation portion integrally formed with the main body. The main body includes a top wall and a peripheral wall extending from a peripheral edge of the top wall. The top wall and the peripheral wall cooperatively define an accommodating space. The top wall defines a viewing aperture through the top wall thereof and at least one riser vent positioned adjacent to the peripheral wall. The at least one ventilation portion covers the riser vent, and is made of a waterproof breathable material. | 09-13-2012 |
20120300321 | Lens Unit with a Temperature Compensation Function - A high-expansion compensating member and a low-expansion compensating member respectively have contact surfaces that make contact with each other in a state inclined with respect to the optical axis such that, when a variation in temperature causes the high-expansion compensating member to expand or contract in the direction perpendicular to the optical axis, the low-expansion compensating member is displaced in the optical axis direction. As the low-expansion compensating member is displaced in the optical axis direction, a compensator lens holding frame and a compensator lens move in the optical axis direction, and thereby a displacement in focal position occurring in an image-taking lens due to a variation in temperature is compensated for. | 11-29-2012 |
20130163104 | OPTICAL ARRANGEMENT WITH TEMPERATURE COMPENSATION FOR FOCAL LENGTH CHANGES - An optical instrument with temperature-related focal length variations compensation mechanism is provided herein. The optical instrument includes: a housing within a bore of the optical instrument, wherein the bore and the housing have each a distal end and a proximal end; a set of lenses located on a common optical axis and affixed within the housing, wherein the set of lenses is associated with a specified focal length for each specified temperature; and a temperature compensation member connecting the distal end of the housing to the distal end of the bore of the optical instrument, wherein the temperature compensation member comprises one or more sections whose thermal expansion coefficient and length along the optical axis are selected such that for a specified range of temperatures, the expansion of the temperature compensation member along the optical axis compensates for a change of the focal length of the lenses. | 06-27-2013 |
20140340771 | Lens Barrel - The present invention provides a lens barrel applicable to digital cameras, image pickup devices and cell phones. The lens barrel is small, low-cost and high-performance, and can suppress, by means of a simple mechanism provided in the lens barrel, a variation in the focal position of the lens barrel caused by the change in temperature. The lens barrel comprises a lens group consisting of a plurality of lenses and a lens chamber for holding the lens group. An elastic member is provided between a set of adjacent lenses of the lens group, for urging the set of adjacent lenses in an optical axis direction of the lenses. The space between the set of lenses is increased or decreased by the elastic member, which causes a back focus of the lens barrel to move in a direction opposite to the direction in which the focal position of the lens barrel varies due to thermal expansion or thermal contraction of the lens group and the lens chamber and the change of refractive index of the lens group resulting from a temperature change. Hence, by increasing or decreasing the space in the optical axis direction between the lenses at both ends of the elastic member, the variation in the focal position of the lens barrel is suppressed. | 11-20-2014 |
20150055233 | OPTICAL SUBASSEMBLY WITH A MOUNT WITH CONNECTION UNITS OF DIRECTED FLEXIBILITY - A thermally compensated optical subassembly having a rotationally symmetrical optical element and a monolithic mount with a rotationally symmetrical mounting ring, having an axis of symmetry, and at least three connection units. The optical element communicates with the mounting ring via the connection units, so as to be secured against tilting and fixed with respect to torsion. The connection units, in each instance, have three couplers which have a determined length ratio with respect to one another and are connected to one another and to the mounting ring and optical element such that defined conditions are met. | 02-26-2015 |
20150077871 | LENS CAP FOR OPTICAL MODULE, OPTICAL MODULE, AND METHOD FOR MANUFACTURING LENS CAP FOR OPTICAL MODULE - A lens cap for an optical module includes: a barrel of a metal material; and a press lens of glass and held in the barrel. The coefficient of linear expansion of the glass is 6 to 8 ppm/K, and the coefficient of linear expansion of the metal material is at least 10 ppm/K at 150° C. to 800° C. and no more than 8 ppm/K at up to 100° C. or below. | 03-19-2015 |
20150085388 | OPTICAL MODULE AND MANUFACTURING METHOD THEREOF - An optical module and a manufacturing method thereof are provided which can improve positioning accuracy between parts. A barrel and a lens holder are prepared, the lens holder is fitted into a cylindrical portion from a collar portion side of the barrel, and the barrel and the lens holder are assembled. In this case, the barrel and the lens holder are assembled with a brazing material inserted therebetween. The assembled barrel and lens holder are heated, and the brazing material is melted to thereby perform brazing. Lens glass is sandwiched between metal dies and a lens is press-molded using a pressing apparatus. In this case, positioning of press molding is performed using the barrel for which a small linear expansion coefficient is set as a reference. | 03-26-2015 |
20160018619 | SPRINGLESS ATHERMAL LENS DESIGN WITH FLEXURED SPACER - Embodiments of the invention are directed to a springless athermal lens assembly. In one embodiment, a spacer of a springless athermal lens assembly may compensate for defocus of the camera system due to thermal expansion of the lens assembly through the coupling of a spacer to an inner barrel and an outer barrel. The inner barrel comprises a lens cell assembly and a body. The outer barrel comprises a body. The spacer comprises a body having an inner surface and an outer surface. The outer surface of the spacer body is configured to be physically coupled to outer barrel body and the inner surface of the spacer body is configured to be physically coupled to the inner barrel body. A retainer ring is configured to engage with the outer surface of the spacer body and provide a radial force against the outer surface of the spacer body to securably engage the inner surface of the spacer body with the inner barrel body. | 01-21-2016 |
20160097912 | IMAGING DEVICE - The present invention provides an imaging device in which focus movement due to a temperature variation is suppressed and the infiltration of foreign matter such as liquid or dust is prevented. An imaging device | 04-07-2016 |
20160178866 | OPTICAL MODULE AND OPTICAL MODULE LENS CAP | 06-23-2016 |
20170234734 | OPTICAL APPARATUS AND SIGHT TUBE FOR INSPECTING TURBINE ENGINE COMPONENTS | 08-17-2017 |