Class / Patent application number | Description | Number of patent applications / Date published |
359209000 | Including transmissive type moving element | 6 |
20090009842 | OPTICAL ARCHITECTURE HAVING A ROTATING POLYGON FOR USE IN IMAGING SYSTEMS - An optical architecture comprises a refractive cylinder that is movable relative to the incident light. By moving the refractive cylinder, the output light from the refractive cylinder is capable of sweeping through a spatial angle. Examples of the optical architecture can be implemented in an imaging system, such as a display system, for sequentially illuminating the target, such as a light valve in a display system with a high brightness. | 01-08-2009 |
20090059339 | APPARATUS AND METHOD FOR DISPLAYING THREE-DIMENSIONAL IMAGES - Provided are an apparatus and method of displaying a three-dimensional image. The apparatus includes a light source unit and a volume diffractive element diffracting beams emitted from the light sources unit so that spots of the beams can be formed at different positions from each other in a propagating direction of the beams diffracted by the volume diffractive element to scan the beams in a first direction. | 03-05-2009 |
359211000 | Having moving prism | 4 |
20080247022 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device which produces illumination light for illuminating a target illumination area on a predetermined light receiving surface includes: a light source which emits light; a superimposing illumination element which superimposes the light emitted from the light source and applies the light to the target illumination area; an optical path converting unit disposed on an optical path between the light source and the superimposing illumination element to convert the optical path of the light emitted from the light source and supply the light having the converted optical path to the superimposing illumination element; and a shift unit which shifts the optical path converting unit. | 10-09-2008 |
20080259428 | Optical Delay - An optical delay line device includes a rotatable wheel and one or more prisms mounted about the circumference of the wheel. The one are more prisms are positioned to retroreflect the optical beam that passes approximately tangent to the wheel to cause a delay or phase shift to the beam as the wheel rotates. | 10-23-2008 |
20090034042 | Apparatus for Swiveling an Optical Beam - An apparatus for swiveling an optical beam has a swiveling unit with a number of micro-optical grids for swiveling the beam. In order to compensate for beam errors, such as wavefront aberrations or diffraction effects, the apparatus includes an adaptive optical device with a phase shifter for correction of beam errors in the beam. | 02-05-2009 |
20090080048 | Methods and Systems of Rapid Focusing and Zooming for Volumetric 3D Displays and Cameras - This invention relates in general to methods and systems of rapid focusing and zooming for the applications in the projection of volumetric 3D images and in the imaging of 3D objects. Rapid variable focusing or zooming is achieved by rapid and repeated change of the object distance or the spacing between lens groups of the projection lens or a combination of both. One preferred approach inserts thin wedge prisms into the optical path and changes their positions relative to the optical path. This changes the thickness traveled through by the optical path and results in effective optical path length change. Another approach folds an optical path by mirrors and moves the mirrors to change the optical path length. For focusing purpose, small and precise displacement is achieved by moving a wedge-shaped optical device obliquely with respect to the optical path. The wedge-shaped optical device can be a thin wedge prism or a mirror on a wedge-shaped base. Optical layout analysis shows that the changes of the object distance, of the spacing between two lens groups and of the image distance are almost in proportion and can be correlated by linear relations. Therefore, the same type of motion function can be used to change these three optical path lengths to achieve focusing and constant magnification. | 03-26-2009 |