Patent application number | Description | Published |
20080239447 | ILLUMINATION SYSTEM - An illumination system including a coherent light source and a speckle-reducing module is provided. The coherent light source is adopted for providing a light beam. The speckle-reducing module is disposed at an optical path of the light beam. The speckle-reducing module includes a rotator, a carrier and an optical path adjusting member. The rotator is adopted for rotating on a reference plane about a spindle axis passing through the rotator. The spindle axis is substantially perpendicular to the reference plane. The carrier is disposed at the rotator. The optical path adjusting member is disposed at the carrier and at the optical path of the light beam. The optical path adjusting member has an incident surface inclined at an angle with respect to the reference plane. | 10-02-2008 |
20090016061 | ILLUMINATION SYSTEM - An illumination system including a coherent light source, a light integrator and a first actuator is provided. The coherent light source is capable of providing an illumination beam. The light integrator is disposed on a transmission path of the illumination beam, and the first actuator is connected to the light integrator. The light integrator has a light entering end and a light exit end opposite to the light entering end, and the light entering end faces the coherent light source. The first actuator is capable of driving the light integrator to move and/or rotate, so as to change a position at the light entering end entered by the illumination beam. | 01-15-2009 |
20090021829 | OPTICAL MODULE - An optical module including a first integration rod, a polarization beam splitting unit, a first reflector, a first quarter-wave plate, and a light source is provided. The first integration rod has a first end and a second end opposite to each other. The polarization beam splitting unit is disposed at a side of the first end. The polarization beam splitting unit reflects a beam with a first polarization direction and allows a beam with a second polarization direction to pass through. The first reflector is disposed at a side of the second end. The first quarter-wave plate is disposed between the polarization beam splitting unit and the first reflector. The light source provides a light beam to the polarization beam splitting unit. The light beam includes a first polarization beam with the first polarization direction. The polarization beam splitting unit reflects the first polarization beam to the first integration rod. | 01-22-2009 |
20130229635 | PROJECTION LENS AND PROJECTION DEVICE - A projection lens provided is for projecting an image beam. The projection lens is disposed on a transmission path of the image beam and includes a first group of lenses and a second group of lenses. The first group of lenses includes a first spherical lens and a first aspheric lens. After the image beam passes through the first group of lenses, an intermediate image is formed between the first group of lenses and the second group of lenses, in which the first aspheric lens is the lens in the first group of lenses closest to the second group of lenses. A projection device using the projection lens is also provided. The projection device further includes a planar reflector on the transmission path of the image beam. | 09-05-2013 |
20130271635 | IMAGE PROJECTION AND CAPTURE APPARATUS - The image projection and capture apparatus for projecting an image beam to display an image on a screen and sensing a sensing beam from the image on the screen, the image projection and capture apparatus includes a light source, a light valve, a projection lens, an image capture lens, a dichroic unit, and an image sensor. The light source provides an illumination beam. The light valve is capable of converting the illumination beam to the image beam. The projection lens has a first optical axis. The image capture lens has a second optical axis. The first optical axis and the second optical axis are collinear. The dichroic unit is disposed between the projection lens and the image capture lens. The image sensor is disposed on a light path of the sensing beam. | 10-17-2013 |
20140002802 | PROJECTION APPARATUS AND PROJECTION LENS THEREOF | 01-02-2014 |
20140049813 | PROJECTION LENS - A projection lens configured to form an image from an image source which is disposed at an object side is provided. The projection lens includes a lens group and an aspheric mirror. The lens group has a first optical axis, and an intermediate image is formed by the lens group from the image source. The aspheric mirror has a second optical axis and an aspheric surface. The lens group is disposed between the object side and the aspheric mirror. The aspheric surface faces the lens group and reflects the intermediate image to form the image at an image side. The first optical axis is not coaxial with the second optical axis, and an offset of the image relative to the first optical axis is larger than or equal to 100%. | 02-20-2014 |
20140092366 | MULTI-PROJECTION SYSTEM AND DISPLAY SYSTEM USING THE SAME - A multi-projection system and a display system using the same are provided. The multi-projection system for projecting a plurality of images included in a beam onto a screen includes a beam source providing the beam; an image splitter in proximity to the beam source and has a positive magnifying ratio; and an imaging device in proximity to the image splitter, wherein the beam passes through the image splitter and the imaging device to be projected onto the screen. | 04-03-2014 |