66 results about "Green laser light" patented technology

A 2-dimensional beam scan unit reflects emission beams from a red laser light source, a green laser light source and a blue laser light source and scans in a 2-dimensional direction. Diffusion plates diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements. The respective spatial light modulation elements modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens so that a color image is displayed on a screen. Since the 2-dimensional light emitted from the beam scan unit is diffused to illuminate the spatial light modulation element, it is possible to change the optical axis of the beam emerging from the light diffusion member for irradiating the spatial light modulation element moment by moment, thereby effectively suppressing speckle noise.

The invention discloses a projection light source drive and control circuit. The projection light source drive and control circuit provided in an embodiment of the invention comprises a light source gate control module, a first drive logic module, a second drive logic module, a third drive logic module, a red laser light output unit, a blue laser light output unit and a green laser light output unit; the projection light source drive and control circuit can optionally be connected to a double color laser light source or a three color laser light source via a plurality of logic signals; the projection light source drive and control circuit can be suitable for drive and control of a plurality kinds of laser light sources, compatibility and universality of the projection light source drive and control circuit can be achieved, and an application range of the projection light source drive and control circuit can be expanded.

Red light emitted from a red laser light source, green light emitted from a green laser light source and blue light emitted from a blue laser light source are incident on a first disc body of a color wheel, are transmitted or reflected in conformity with the colors of the lights in wavelength selecting regions of a second disc body every time the color wheel performs a predetermined rotation. AS being reflected by the first disc body, the lights are divided into different positions to be emitted from the color wheel and irradiated to irradiation regions successively switched by an upward or downward reciprocal movement of a mirror group.

The present invention relates to a projector reflecting laser of multiple colors and an optical axis adjusting method therefor. A first light output unit (31)integrally has a first light source (11) and a first prism (17), a second light output unit integrally has a second light source (13) and a second prism (18), and a third light output unit (33) integrally has a third light source (15) and a third prism (19). A first surface (34) of the first prism (17) and a second surface (35) of the second prism (18) are adhered together by an adhesive with a first film located therebetween, and first film (20) passes green laser light and reflects blue laser light. A third surface (36) of the second prism (19) and a fourth surface (37) of the third prism (19) are adhered together by an adhesive with a second film located therebetween, and second film (21) passes the green laser light and the blue laser light, and reflects red laser light.

In order to miniaturize a projector as a whole to such a degree that the projector can be included in a small device such as a portable telephone terminal or the like, a red laser light beam (1R) is diffused and shaped by a diffractive optical element (21R) for red, a green laser light beam (1G) is diffused and shaped by a diffractive optical element (21G) for green, and a blue laser light beam (1B) is diffused and shaped by a diffractive optical element (21B) for blue, so as to be each spread over an entire display area of a liquid crystal display panel (40) and be incident on corresponding pixels of a liquid crystal layer (48). The diffused and shaped laser light beams (2R, 2G, and 2B) are made incident on the liquid crystal display panel (40) via a field lens (31). In the liquid crystal display panel (40), red, green, and blue pixels are formed, and a microlens array is formed in an incidence side substrate (41). The liquid crystal display panel (40) distributes and condenses the laser light of the colors by microlenses, and makes the laser light incident on the corresponding pixels. Refraction type optical elements can be used in place of the diffractive optical elements.

This invention relates to holographic film for recording multicolor volume holograms, especially full color volume reflection holograms, and to manufacturing techniques for such film, and to corresponding methods of recording multicolor and full-color volume, in particular volume reflection holograms. We describe a holographic film for recording a multicolor volume hologram, the film comprising: a carrier; a first photosensitive recording layer sensitive to one or both of red and green laser light; and a second photosensitive recording layer sensitive to blue laser light. Both the first and second photosensitive recording layers comprise silver halide and have a grain size of less than 30 nm, and at least one of the photosensitive recording layers has a thickness of greater than 3 μm and less than 5 μm.

The invention discloses a large-color-gamut laser light source system integrated through trapped wave beam combination. The system comprises a blue laser light source I1, a green-light-reflecting blue-transmitting beam combiner 2, a green laser light source 3, a blue excitation light source 5, a red-light-reflecting blue-green-transmitting beam combiner 6, a fluorescence unit 7 and a red laser light source 9. The light beam emitted by the blue laser light source I1 sequentially passes through the green-light-reflecting blue-transmitting beam combiner 2, a light equalizing sheet I4a, the red-light-reflecting blue-green-transmitting beam combiner 6, a red trapped wave filter 10 and a lens group II11 and enters a light guide tube 12; and the light beam emitted by the green laser light source3 sequentially passes through the green-light-reflecting blue-transmitting beam combiner 2, the light equalizing sheet I4a, the red-light-reflecting blue-green-transmitting beam combiner 6, the red trapped wave filter 10 and the lens group II11 and enters the light guide tube 12. The RGB laser light source coupled integrated system realizes a multi-light-source high-efficiency super-small-size coupling mode, can meet the requirements of a large color gamut Rec.2020, and meanwhile, is high in cost performance and wide in working temperature application range.