65 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.

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.

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.

An image displaying apparatus includes laser light sources corresponding to a plurality of colors, while at least one of the laser light sources corresponding to one of the colors includes a plurality of wavelength conversion laser light sources corresponding to a mutually same color and has a plurality of outputs. The image displaying apparatus is operable to display a color image by causing a spatial modulation element to perform a spatial modulation process on laser beams output from the laser light sources by using a field sequential method. When the spatial modulation element performs the spatial modulation process on the laser beams output from one of the laser light sources (e.g., the green laser light source) having a plurality of outputs, a drive controlling device causes green laser emitting units serving as the wavelength conversion laser light sources to sequentially output pulses so that the laser beams output from the green laser emitting units continuously form substantially constant laser outputs that have substantially the same peak power as each other.

The invention discloses a micro projector based on pure laser optics engine, comprising a projection lens A, a heat dissipation copper plate A, a red laser light source A, a green laser light source A, a blue laser light source A, an X prism A, a white light reflector, a TIR (Total Internal Reflection) prism, and a DLP (Digital Light Processing) light modulator A. With a compact structure, the micro projector is reduced in volume; the pure three-color lasers are adopted and light transfer efficiency reduction possibly occurring due to the small volume is prevented, thereby effectively reducing light energy loss. Beside a radiator is together used by three-color lasers, a heat dissipation problem of a light supply device is successfully solved and practicability of an optical engine module is increased in the micro projector. Moreover, the optical engine part of the pure laser micro projector is changed, the lens especially for the non-spherical lens is reduced in use, and the volume and the cost are reduced, so that the price of the projector is approximate to the mass consumption level and the micro project is more likely to have a considerable market.

Disclosed is a liquid crystal display device including a wavelength-selective substrate (23) composed of a wavelength-selective portion (23R) through which only red laser light is transmitted and which reflects other light, a wavelength-selective portion (23G) through which only green laser light is transmitted and which reflects other light, and a wavelength-selective portion (23B) through which only blue laser light is transmitted and which reflects other light. Laser light corresponding to the light colours transmitted by the wavelength-selective portions, from laser light (12) emitted from a light guide panel (14), is transmitted through the wavelength-selective substrate (23) without alteration and falls incident on a liquid crystal panel (22), while the non-correspondent laser light is reflected by the wavelength-selective substrate (23) and returned to the light guide panel (14). The laser light returned to the light guide panel (14) is reflected by a reflective panel (21) and caused to again fall incident on the wavelength-selective substrate (23). The laser light is repeatedly reflected and returned until the laser light is transmitted through the wavelength-selective portions. This repeated process of transmission and reflection splits the laser light (12) into the colors of red, green and blue which are emitted from the wavelength-selective substrate (23).

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.

The invention discloses an intelligent traffic light with a high warning property. The intelligent traffic light comprises a supporting stand column, a laser projection module and a traffic control system. The LED light source module comprises red light, green light and yellow light and provides a road surface signal command function; the light sources are a red laser light source and a green laser light source; the laser projector projects the light source and emits projection light beams to form a light beam fence on the road surface, a central control panel sets the width and the length ofthe projection light beams according to the detection result of the projection area detection unit, and the optimal warning effect is achieved under the condition that the necessary sight line is notblocked. The light source intensity value of the projection light beams is set according to the detection result of a photosensitive sensor so that the highest warning effect is achieved, and the light source light-emitting effect is kept consistent with the light-emitting effect of the LED light source module; and the data analysis module analyzes the personnel and vehicle flow of the road section according to the detection result of the flow detection module, and the working states of the light source and the LED light source module are adjusted through the timing setting module.

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.

According to the conveyor belt deviation diagnosis method and system based on machine vision, after the camera mechanism installed above the belt captures the picture of belt movement in real time, green laser rays on the rubber belt in the picture are extracted, and whether the belt deviates or not is judged according to the position movement of the green laser rays. A laser transmitter is additionally arranged above a belt, a high-definition camera is used for capturing scene pictures of belt operation in real time, algorithms such as image segmentation and characterization extraction are applied to the captured pictures, feature samples are trained and calibrated through a support vector machine, training learning of belt motion scenes is completed, therefore, the movement displacement of the laser rays in the image, namely the movement displacement of the adhesive tape, is detected in real time, and whether the belt deviates or not and the deviation direction are judged.

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.

The invention relates to a multifunctional optical experiment box with ultrasonic mist and colloid media. The box is characterized in that the ultrasonic mist and the colloid media are arranged in the box, and a plurality of optical elements are installed in different media in the box and can display all light paths of light transmitted in the box. A novel optical bench, a laser light source and a two-dimensional adjustable vernier caliper are installed above the box. The box can be used for studying all light phenomena in middle school physics by means of strong functions. All the light paths of various lenses can be observed in the ultrasonic mist media by means of red parallel light, and Newton rings can be observed when the red parallel light passes through a plano-convex lens and flat glass. Users can open a green laser light source, install a plurality of templates and hang small steel balls on the two-dimensional adjustable vernier caliper and move the vernier caliper to finish a plurality of physical optical experiments such as diffraction and interference of light and cypress pine bright spot. The users can observe all the light paths in the box by holding the laser light source to emit the various optical elements in the box and can quantitatively analyze and observe various light phenomena.

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.