439results about "Color photography" patented technology

The invention discloses a projection light nucleus, a projection system and related equipment, which can reduce the light path length of the projection light nucleus, further reduce the volume of the projection light nucleus and improve the integration level of the projection light nucleus. The projection light core comprises a light splitting assembly, a reflector group and an image modulation module, the light splitting assembly comprises a first dichroscope and a second dichroscope, and the first dichroscope and the second dichroscope intersect. The light splitting assembly is used for splitting an input beam to obtain a projection beam. The projection beams comprise a blue beam, a green beam and a red beam; the reflector group is used for reflecting the projection light beam to the image modulation module, the light splitting assembly intersects at a reference plane, a first angle is formed between the transmission direction of the input light beam and the reference plane, and a second angle is formed between the transmission direction of the projection light beam emitted from the reflector group and the reference plane; the absolute value of the first angle is smaller than that of the second angle; the image modulation module is used for modulating the projection beam to obtain an imaging beam.

An illumination device includes a first light source unit configured to emit first light in a first wavelength band, a second light source unit configured to emit second light in a second wavelength band different from the first wavelength band, a light combining element configured to combine the first light and the second light to emit composite light, a diffusion member configured to diffuse the composite light emitted from the light combining element, and a concave mirror configured to collect the composite light emitted from the light combining element to cause the composite light collected to enter the diffusion member.

A multispectral image capture device includes an imaging platform having arranged thereon an image sensor comprising a photosensitive surface and an optical unit, a gimbals system for controlling a line of sight of the image sensor, a filter wheel comprising a series of n spectral filters arranged between the image sensor and an imaging target; and a drive system configured to rotate the filter wheel at a constant velocity so as to bring each of the spectral filters into a line of sight between the image sensor and the imaging target. A controller is adapted to synchronize movement of the imaging platform, control of line of sight of the image sensor with the gimbals, and constant rotation of the filter wheel, such that the image sensor captures a sequence of overlapping step-and-stare images through the series of rotating spectral filters without changing a speed of rotation of the filter wheel.

Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.

The invention provides a light generating system comprising one or more light generating devices, a luminescent material, a diffuser element, a polarization changing element, central optics, and a control system, wherein: (A) the one or more light generating devices are configured to generate device light; wherein the one or more light generating devices comprise light sources selected from a laser diode and a superluminescent diode; wherein the device light received by the central optics comprises a controllable polarization; (B) the luminescent material is configured to convert at least part of the device light received by the luminescent material into luminescent material light; (C) the diffuser element is configured to diffuse at least part of the device light received by the diffuser element thereby providing diffused device light while maintaining at least part of the polarization; (D) the polarization changing element is configured in an optical path of the device light between the central optics and the diffuser element; (E) the central optics comprises (i) a central optics polarizing beam splitter, and (ii) a central optics dichroic beam splitter; wherein the central optics are configured to transmit and / or reflect device light, diffused device light, and luminescent material light, received by the central optics in dependence of one or more of their polarizations and their spectral power distributions; (F) the control system is configured to control the polarization of the device light received by the central optics; (G) the light generating system is configured to provide system light comprising one or more of diffused device light and luminescent material light; and wherein the light generating system is configured such that in a first operational mode of the light generating system (a) at least part of the device light irradiates the luminescent material via the central optics, and the luminescent material light escapes from the light generating system via the central optics, and (b) at least part of the device light irradiates the diffuser element via the central optics, and at least part of the diffused device light escapes from the light generating system via the central optics.

Disclosed herein is an optical assembly for generating a color image using white light as source. The optical assembly includes a broadband white light source array, a color filter assembly configured to allow selectively filtering therethrough light in each of three additive primary colors, and a control unit. The control unit is configured to actuate light sources in the light source array according to three intensity maps. Each of the intensity maps corresponds to one of the three additive primary colors. The control unit is further configured to synchronize operations of the light source array and the color filter arrangement such that, when light sources in the light source array are actuated according to one of the three intensity maps, the color filter arrangement filters therethrough light at the additive primary color to which the intensity map corresponds.

A radiation-emitting device includes an optoelectronic component for emitting first electromagnetic radiation. The radiation-emitting device also includes a conversion element having an entrance surface and an exit surface. The radiation-emitting device further includes a dielectric mirror on the exit surface. The radiation-emitting device is configured such that first radiation emitted by the component during operation enters the conversion element via the entrance surface. The conversion element is configured for converting the first radiation into second electromagnetic radiation, which subsequently exits the conversion element via the exit surface. The dielectric mirror is transmissive to second radiation that is incident at angles of incidence in a predefined first angle range, and is reflective for second radiation that is incident at angles of incidence in a predefined second angle range.

A spectroscopic 3D image display device according to the present disclosure includes: at least one first projection type image display device that uses first illumination light to display an image; at least one second projection type image display device that uses second illumination light to display an image; and a system controller that carries out control so that the first and second projection type image display devices are synchronously driven. A light source device of the first projection type image display device emits, with prescribed output power, first blue light having the central wavelength λa, and switches the intensity of the output power and emits third blue light. A light source device of the second projection type image display device emits, with prescribed output power, second blue light having the central wavelength λb. The central wavelengths λa, λb, and λc satisfy λb≤λc<λa.

The lighting device and the projector are high in efficiency. This illumination device is provided with: a first light source unit that emits first light of a first wavelength band; a second light source unit that emits second light of a second wavelength band different from the first wavelength band; a light synthesizing element that synthesizes the first light and the second light and emits synthesized light; a diffusion member that diffuses the synthesized light emitted from the light synthesizing element; and a concave mirror that condenses the combined light emitted from the light combining element and causes the condensed combined light to enter the diffusion member.

In an example, a system includes a light splitter configured to reflect first light having a first wavelength and a first polarization, to transmit light having the first wavelength and a second polarization, to transmit light having a second wavelength, and to transmit light having a third wavelength. The system also includes a quarter wave plate optically coupled to the light splitter. The system includes a color wheel optically coupled to the quarter wave plate, the color wheel having a first filter segment, a second filter segment, and a third filter segment. The system also includes a phosphor optically coupled to the color wheel, the phosphor configured to produce second light responsive to receiving the first light, and the color wheel configured to receive the second light and produce light having the second wavelength or the third wavelength.

Disclosed herein is a compact projector for display systems. In various embodiments, the projector may include a light source, a first reflective polarizer, a reflective image modulator, a set of one or more lenses positioned along a first optical axis between the first reflective polarizer and the reflective image modulator, and a display system. The light source may output illuminating light which at least partially passes through the first reflective polarizer and is focused by the set of one or more lenses to provide telecentric illumination with a narrow cone angle onto the reflective image modulator. The illuminating light may be reflected by the reflective image modulator to form image containing light which is focused by the set of one or more lenses, and the image containing light may be reflected by the first reflective polarizer to provide an input to the display system.

The invention provides a light generating system comprising one or more light generating devices, a luminescent material, a diffuser element, a polarization changing element, central optics, and a control system, wherein: (A) the one or more light generating devices are configured to generate device light; wherein the one or more light generating devices comprise light sources selected from a laser diode and a superluminescent diode; wherein the device light received by the central optics comprises a controllable polarization; (B) the luminescent material is configured to convert at least part of the device light received by the luminescent material into luminescent material light; (C) the diffuser element is configured to diffuse at least part of the device light received by the diffuser element thereby providing diffused device light while maintaining at least part of the polarization; (D) the polarization changing element is configured in an optical path of the device light between the central optics and the diffuser element; (E) the central optics comprises (i) a central optics polarizing beam splitter, and (ii) a central optics dichroic beam splitter; wherein the central optics are configured to transmit and / or reflect device light, diffused device light, and luminescent material light, received by the central optics in dependence of one or more of their polarizations and their spectral power distributions; (F) the control system is configured to control the polarization of the device light received by the central optics; (G) the light generating system is configured to provide system light comprising one or more of diffused device light and luminescent material light; and wherein the light generating system is configured such that in a first operational mode of the light generating system (a) at least part of the device light irradiates the luminescent material via the central optics, and the luminescent material light escapes from the light generating system via the central optics, and (b) at least part of the device light irradiates the diffuser element via the central optics, and at least part of the diffused device light escapes from the light generating system via the central optics.

A cooling device of a projection display apparatus includes a first heat receiving unit including an opening that is rectangular. The first heat receiving unit includes a flow path part. An image display element of the projection display apparatus includes a first front face located in front of a reflective image display, a second front face parallel to the first front face and located behind and outside the first front face, and a first side face located between the first front face and the second front face. The first front face of the image display element is inserted into the opening of the first heat receiving unit, and the flow path part of the first heat receiving unit is in contact with the first side face and the second front face of the image display element via a heat conductive member. The flow path part of the first heat receiving unit includes a front face that is flush face with or in front of the first front face of the image display element.

A light field imaging device and method are provided. The device can include a diffraction grating assembly receiving a wavefront from a scene and including one or more diffraction gratings, each having a grating period along a grating axis and diffracting the wavefront to generate a diffracted wavefront. The device can also include a pixel array disposed under the diffraction grating assembly and detecting the diffracted wavefront in a near-field diffraction regime to provide light field image data about the scene. The pixel array has a pixel pitch along the grating axis that is smaller than the grating period. The device can further include a color filter array disposed over the pixel array to spatio-chromatically sample the diffracted wavefront prior to detection by the pixel array. The device and method can be implemented in backside-illuminated sensor architectures. Diffraction grating assemblies for use in the device and method are also disclosed.

A spectroscopic 3D image display device according to the present disclosure includes: at least one first projection type image display device that uses first illumination light to display an image; at least one second projection type image display device that uses second illumination light to display an image; and a system controller that carries out control so that the first and second projection type image display devices are synchronously driven. A light source device of the first projection type image display device emits, with prescribed output power, first blue light having the central wavelength λa, and switches the intensity of the output power and emits third blue light. A light source device of the second projection type image display device emits, with prescribed output power, second blue light having the central wavelength λb. The central wavelengths λa, λb, and λc satisfy λb ≤λc < λa.

A light source device and a projector. The light source device includes: a first light source that emits first light; a wavelength conversion element that converts the first light into second light; a first optical member that transmits the first light and reflects the second light; a first light guide part for guiding the second light; a first reflection member that reflects the first light and the second light; and a support member that supports the wavelength conversion element. The wavelength conversion element has a first surface on which the first light is incident, a second surface and a third surface that intersect the first surface and face opposite sides to each other, and a fourth surface and a fifth surface that intersect the first surface, the second surface, and the third surface and face opposite sides to each other. The first reflection member is disposed on the second surface side of the wavelength conversion element and the first light guide portion, the second light is emitted from the third surface side of the first light guide portion, and the support member has a first support portion that supports the fourth surface and a second support portion that supports the fifth surface. The first optical member covers a side of the first light guide portion disposed between the first support portion and the second support portion opposite to the wavelength conversion element.

A system may include a processor (122), a night vision sensor (118), and an objective lens assembly (106) comprising four lenses. Each of a first lens (108-1), a second lens (108-2), a third lens (108-3), and a fourth lens (108-4) may be configured to project a real world scene (102) onto one of four portions of the night vision sensor. The night vision sensor may be configured to provide four images of the real world scene from the objective lens assembly to the processor. The processor may be configured to: receive a first image, a second image, a third image, and a fourth image from the night vision sensor; generate color night vision image data based at least on the first image, the second image, the third image, and the fourth image; and output the color night vision image data.

A light source device includes a first light source for emitting first light, a first wavelength conversion element for converting the first light into second light, a first optical layer for transmitting the first light and reflecting the second light, a second light source for emitting third light, and a light guide section for guiding the second light and the third light. The first wavelength conversion element has a first surface on which the first light is incident via the first optical layer, and a second surface and a third surface which intersect the first surface and face away from each other. The second light source is disposed in a region on the second surface side of the light guide section. The first optical layer reflects the third light in addition to the second light, and a portion of the second light and the third light travels through the light guide section and is emitted from the region on the third surface side of the light guide section.

A light generation system (1) providing, in operation, system light and comprising a first laser light source (2) configured to generate a first light beam (9) being emitted in and having a main optical axis extending in a first direction (D1), a second laser light source (3) configured to generate a second light beam (10) being emitted in and having a main optical axis extending in a third direction (D3), a wavelength conversion unit (4) being configured to convert the second light beam (11) into a converted light beam (12) being emitted in a fourth direction (D4), and comprising a wavelength conversion member (29) and a heat sink element (30) arranged in thermal contact with the wavelength conversion member, a beam tilting diffusor (5) configured to transmit, diffuse and tilt around a tilting angle (β) the first light beam (9) into a diffused first light beam (25) propagating in and having a main optical axis extending in a second direction (D2), the second direction (D2) being different from the first direction (D1) and extending in the tilting angle (β) with the first direction (D1), and a dichroic reflecting unit (6) being arranged downstream of the beam tilting diffusor (5) and downstream the wavelength conversion unit (4) such as to receive both the diffused first light beam (25) and the converted light beam (12), to transmit the diffused first light beam (25) in a fifth direction (D5), and to reflect the converted light beam (12) in the fifth direction (D5), or the dichroic reflecting unit (6) being arranged downstream of the beam tilting diffusor (5) such as to receive both the diffused first light beam (25) and the converted light beam (12), to transmit the converted light beam (12) in a fifth direction (D5) and to reflect the diffused first light beam (25) in the fifth direction (D5).

A projection device includes a plurality of solid-state lighting sources driven by a DC drive power to sequentially provide a first light generated by a first number of light sources, a second light generated by a second number of light sources and a third light generated by a third number of light sources within a response cycle; and a color wheel having a first block, a second block and a third block, respectively corresponding to the first to third lights, so that the projection device sequentially outputs a first color light with a first brightness, a second color light with a second brightness and a third color light with a third brightness. The brightness of the first to third lights is controlled by number of light sources to be turn on.

A collection system may include sensors with optical axes which are aligned through a beamsplitter. The sensors may be affixed to printed circuit boards which may in turn be affixed to camera bases. The camera bases may be affixed to static bases through glue layers and blocks. The static bases may extend orthogonally from and may be affixed to the baseplate. Thus, the alignment of the sensors may be maintained by the baseplate through the printed circuit boards, the camera bases, the glue layers, the blocks, and the static bases. The glue layers may also provide six degrees-of-freedom during the alignment before the glue layers are adhered.

A light source system (200), comprising a first light source (10), a first wavelength conversion device (20), a second wavelength conversion device (30), a light path conversion element (40), and a light combining unit (50). The light path conversion element (40) is configured to make an excitation light emitted by the first light source (10) irradiate the first wavelength conversion device (20) and the second wavelength conversion device (30) in turn, so as to correspondingly excite and generate a first excited light and a second excited light. The light combining unit (50) is configured to combine the first excited light and the second excited light. The first wavelength conversion device (20) and the second wavelength conversion device (30) share the first light source (10), thus making the system compact, easy to cool, and inexpensive. A projector, comprising the light source system (200).

This invention provides a lighting system, a projection device, and a projection control method. The lighting system includes a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, a first color-separating element, a second color-separating element, and a control unit. The first light-emitting unit includes a first light-emitting element and a second light-emitting element. The control unit is electrically connected to the first light-emitting unit and is used to switch the lighting system between a high-efficiency mode and a high-chroma mode. When the lighting system is in high-efficiency mode, the control unit controls the current ratio of the second light-emitting element to be greater than the current ratio of the first light-emitting element. When the lighting system is in high-chroma mode, the control unit controls the current ratio of the second light-emitting element to be less than the current ratio of the first light-emitting element. The lighting system, projection device, and projection control method proposed in this invention have good reliability and produce output light beams with excellent color performance.

The disclosure provides a display unit and a projection device. The display unit includes a first display panel having first light emitting elements configured to provide a first color light, a wavelength conversion element located on a transmission path of the first color light and having a conversion region and a non-conversion region, a second display panel having second light emitting elements configured to provide a second color light, and a light combining element. A quantum dot conversion material is disposed on the conversion region. Part of the first color light is converted into a third color light after passing through the conversion region, and another part of the first color light passes through the non-conversion region. The light combining element is located on transmission paths of the first color light, the second color light and the third color light and is configured to form an image beam.

A projector apparatus or a light source apparatus comprising: a first light source which outputs a first light source light; a second light source of which the wavelength of primary color light is different from the wavelength of primary color light of the first light source, and which outputs a second light source light; a phase modulating element for converting the distribution of the amount of the second light source light; an amplitude modulating element on which the first light source light and the second light source light that has passed through the phase modulating element are both incident, and which performs amplitude modulation with respect to the incident light; and a signal processing unit. The signal processing unit generates an amplitude-modulation drive signal with respect to the amplitude modulating element on the basis of a gamma curve corresponding to the ratio of the first light source light and the second light source light incident on the amplitude modulating element.

Provided is a wavelength converting composite member (10) including: a disk-shaped substrate (13); a first wavelength converting member (11) provided on the substrate and containing a first phosphor that radiates fluorescence due to a parity-forbidden transition; and a second wavelength converting member (12) provided on the substrate and containing a second phosphor that radiates fluorescence due to a parity-allowed transition. The first wavelength converting member and the second wavelength converting member are disposed adjacent to each other along the circumferential direction of the substrate. The first wavelength converting member and the second wavelength converting member are provided on the substrate in such a way that the position of the center of gravity (G) of the entirety of the first wavelength converting member and the second wavelength converting member is located on the rotation axis (R) of the substrate. A light emitting device (100) is provided with the wavelength converting composite member.

The present invention relates to image projection and provides a method and system for performing color calibration of light sources and correction towards a color target, for example a whitepoint target. The calibration and correction considers the ambient temperature and that the projector output has an arbitrary dimming level. The correction can be made automatic and can be performed by an operator in the field by pressing a button.

A laser projection apparatus includes a laser source, a light modulating engine and a projection lens. The laser source includes a laser device, a combining component, a first lens and a phosphor wheel. The combining component includes a reflecting region and two transmitting regions. The reflecting region is configured to reflect a laser beam and a fluorescent beam incident on the reflecting region. The two transmitting regions are disposed on two sides of the reflecting region respectively, and the transmitting regions are configured to transmit a plurality of laser beams emitted by the laser device. The phosphor wheel includes a first region and a second region. The first region is configured to diffuse and reflect the laser beams incident on the first region. The second region is configured to be excited to emit a fluorescent beam due to irradiation of the laser beams incident on the second region.