36results about How to "Etendue is small" patented technology

The invention provides a wavelength conversion device and a light emitting device. The wavelength conversion device comprises a substrate with a through hole, wherein a light incoming opening and a light outgoing opening are respectively formed in two ends of the through hole. The wavelength conversion device also comprises a wavelength conversion material which is arranged in the through hole and is in close contact with the inner wall of the through hole; the wavelength conversion material is used for receiving exciting light which is incoming into the through hole and emitting excited light; and the inner wall of the through hole has a reflectivity for the exciting light and the excited light. The wavelength conversion device also comprises a first light splitting device which is arranged at one side of the light incoming opening of the through hole and covers the light incoming opening, wherein the first light splitting device is capable of transmitting the exciting light and reflecting the excited light. The wavelength conversion material is arranged in the through hole of the substrate and is in good contact with the inner wall of the substrate, so that the radiating effect is excellent; and meanwhile, the through hole of the substrate forms a light collector, and the collected light can be outgoing only through the light outgoing opening of the through hole, so that a high-brightness light source with a small optical extend is obtained.

The invention relates to a laser light emitting device, a light source and a projection display system. The laser light emitting device includes a plurality of lasers used for emitting a plurality of parallel laser beams, a focusing lens used for focusing the plurality of parallel laser beams, and a light scattering component located at the rear end of the light path of the focusing lens; the light scattering component is located at a light path position A, so that the diameter of a circumcircle of a region jointly formed by light spots on the light scattering component which are formed through irradiation of the plurality of laser beams is smaller than 1/5 of the diameter of a circumcircle of a region jointly formed by light spots on the section of the plurality of parallel laser beams; and the scattering angle of the light scattering component is not smaller than 2/3 of a maximum included angle of adjacent laser beams after focusing. Compared with the prior art, outgoing beams of the laser light emitting device of the invention are collimating with light spots uniformly distributed, and therefore, optical extension quantity is smaller; and the outgoing beams can be overlapped with each other without a long light path required, and therefore, a required space is small.

The invention provides an LED light source system and an LED lighting device. The LED light source system comprises an LED chip array, a collimating lens array, a first fly's-eye lens and a second fly's-eye lens, wherein the first fly's-eye lens comprises orthohexagonal microlens arrays which are closely arranged; the second fly's-eye lens comprises rectangular microlens arrays; each rectangular microlens on the second fly's-eye lens and each orthohexagonal microlens on the first fly's-eye lens are in one-to-one correspondence, the center of the rectangular microlens is coincided with the center of the orthohexagonal microlens, and the length of the short edge of the rectangular microlens is equal to 1.5 times of side length of the orthohexagonal microlens on the first fly's-eye lens; two or more edges of the image of each LED chip, which is formed on each rectangular microlens of the second fly's-eye lens after passing through each collimating lens and each orthohexagonal microlens of the first fly's-eye lens, are coincided with the edges of the corresponding rectangular microlens. According to the invention, the image of each LED chip can be well matched with a rectangular clear aperture of the second fly's-eye lens, so that the optical extending amount of the system is reduced, and the brightness is improved.

The present disclosures achieve an illumination optical system that has small etendue, a longer service life, and higher brightness, and that is provided with: a laser light source that generates excitation light; a fluorescent body that generates fluorescent light by means of the aforementioned excitation light; a light tunnel that radiates the aforementioned excitation light that enters one end thereof towards the aforementioned fluorescent body from the other end, and that radiates the fluorescent light generated by the aforementioned fluorescent body from the aforementioned one end; and an optical element that is provided in the light path of the aforementioned laser light source and the aforementioned light tunnel, reflects the aforementioned excitation light, and transmits the aforementioned fluorescent light.

The embodiment of the invention discloses a light source device and a projector and relates to the technical field of display. The brightness of an output light source of a projection display product is improved, and the whole size of the projection display product is reduced. The light source device comprises a first light source, a second light source, a fluorescent powder wheel capable of emitting light of at least two colors, and a light combining mirror, wherein the fluorescent powder wheel is coated with fluorescent powder; the fluorescent powder emits the light in corresponding wavelength when being illuminated by exciting light; and the light combining mirror outputs white light after the light emitted by the first light source, the light emitted by the second light source and the light emitted by the fluorescent powder reach the light combining mirror. With the adoption of the light source device, the quality of the light source output by the projection display product can be improved, and the whole size of the projection display product is reduced.

The invention discloses a laser projection light source module and a beam shaping method as well as laser display equipment. The laser projection light source module comprises a first laser module for emitting a first beam, a second laser module for emitting a second beam, a third laser module for emitting a third beam, and an optical coupler for receiving the first beam, the second beam and the third beam, and coupling the first, second and third beams into a first coupling beam, wherein the first laser module, the second laser module and the third laser module are the laser modules with different colours. By the invention, the speckle dissipating effect of the laser projection light source module can be improved.

The invention discloses a projector in a lighting optical system. The projector comprises a laser source, a synchronizing signal processor, a laser driver, an LED light source, a rotation state detector and a phosphor wheel driver. The synchronous signal processor converts synchronizing signals synchronized with video signals input from the outside into video signals used in the projector. The laser driver controls the lighting state of the laser source according to the synchronizing signals output by the synchronizing signal processor. The LED driver controls the lighting state of the LED light source according to the synchronizing signals output by the synchronizing signal processor. The rotation state detector detects the rotation state of a phosphor wheel. The phosphor wheel driver controls the rotation state of the phosphor wheel according to the detection result of the rotation state detector, so that the color of one indication video signal in the synchronizing signals output by the synchronizing signal processor is matched with the color which is output by the lighting optical system and indicates the rotation state of the phosphor wheel, which is detected by the rotation state detector.

The invention provides a light-emitting device which is characterized by comprising a first laser light source, a polarization beam splitter, a first wave plate, a first light condensation element, ascattering device, a second light condensation element, a first wavelength conversion device, a dichroscope, a third color light generation part and a light condensation part. The light-emitting device provided by the invention has the advantages of high brightness, small optical expansion amount, high color rendering index, uniform light spots, long service life, high efficiency and the like. Thelight-emitting device can be applied to systems requiring high illumination intensity and small optical expansion, such as entertainment lighting systems, projection systems, automobile lighting systems, medical lighting systems, searchlighting lighting systems, field operation lighting systems, navigation lighting systems, portable lighting systems and the like.

The embodiment of the invention discloses a light-emitting device and a projection system. The light-emitting device comprises a light-emitting light source, a wavelength conversion layer and a light combining component, wherein the light-emitting light source comprises a light-emitting surface with a first area and a second area and is used for emitting first light; the wavelength conversion layer comprises a wavelength conversion material and is used for absorbing the first light emitted by the first area of the light-emitting light source to emit excited light; and the light combining component is used for receiving the first light emitted by the second area of the light-emitting light source and the excited light emitted by the wavelength conversion layer and combining the received first light and excited light into combined light in a mode that one light beam covers the other light beam. The brightness of the light-emitting device can be improved.

The invention provides a display system, and the system comprises a light source which is used for emitting first light; a light uniformizing device which comprises a light incident plane and is usedfor receiving the first light and uniformizing the first light; a light modulator which is used for receiving at least a part of light emitted by the light uniformizing device, carrying out the modulation of at least a part of the light entering the light modulator according to an image signal, and emitting modulated light and non-modulated light; and a light guide device which is used for guidingat least a part of non-modulated light emitted by the light modulator to the light incident plane of the light uniformizing device and enabling the light to pass through the light uniformizing deviceto enter the light modulator.

The invention discloses an optical fiber conduction green light source and an all-fiber laser backlight source device. The green light source device comprises a blue laser I, an optical fiber I, a fluorescence converter and an optical fiber II which are connected in sequence, the all-fiber laser backlight source device comprises the above optical fiber conduction green light source device, a second blue light laser, a red light laser, a third optical fiber, a fourth optical fiber, a fifth optical fiber, an optical fiber beam combiner and a focusing collimating mirror. The second blue laser isconnected with the third optical fiber, the red laser is connected with the fourth optical fiber, and the second optical fiber, the third optical fiber and the fourth optical fiber of the green lightsource device are jointly combined and inserted into the optical fiber beam combiner. The other end of the optical fiber beam combiner outputs the fifth optical fiber, and the tail end of the fifth optical fiber is provided with the focusing collimating mirror. According to the green light source device, the green light luminous intensity and the conversion efficiency are improved, and the laser backlight source device is low in production cost, good in device thermal management and high in projection quality.

The invention provides light source equipment. The equipment is characterized by comprising a light source, a reflection element, a polarization beam splitter and a wavelength conversion device, a transmission area of the reflection element allows light of a first wave band emitted by the light source to pass through or enter the polarization beam splitter after passing through, and a reflection area of the reflection element can reflect the light of the first wave band from the polarization beam splitter, so the light is emitted back to polarizing beam splitter, the light can be reused, and the light emitting efficiency of the light source equipment is improved. The light source equipment provided by the invention has the characteristics of high brightness, small optical expansion amount,high color rendering index, long service life and the like, and can be applied to systems requiring high illumination intensity and small optical expansion amount, such as an entertainment illumination system, a projection system, an automobile illumination system, a medical illumination system, a searchlighting illumination system, a field operation illumination system, a navigation illuminationsystem, a portable illumination system and the like.

The invention relates to an illumination system with cold reflecting bowl in the field of projecting display optics technology. It is formed by 1 hemi-spherical reflecting mirror, 2 hemi-ellipsoid reflecting mirror 3 squard rod 6 and hemi-hyperbolical mirror 8. It guarantees the illumination even of the space optic modulator above 90% and adopts the space optic modulator of 0.5íó0.55íó0.7íó0.78íó0.9íó1.3 inch F/#ú¢2 to achieve 14íÒshed angle distal illumination. It uses Light Tools software illumination module modeling and simulation to compute 200,000 lights and obtains the design result on the space optic modulator.

The invention provides a light source device, which is characterized by comprising a light source, a reflection element, a polarization beam splitter, a wavelength conversion device and a scattering optical system. A transmission region of the reflection element allows light of a first wave band emitted by the light source to pass through or be transmitted through and then enter the polarization beam splitter, and a reflection region can reflect the light of the first wave band from the polarization beam splitter, so that the light is emitted back to the polarization beam splitter, the light can be reused, and the light emitting efficiency of the light source device is improved. The light source device has the advantages of being high in brightness, small in optical expansion amount, highin color rendering index, long in service life and the like, and can be suitable for systems needing high illumination intensity and small optical expansion amount, such as an entertainment illumination system, a projection system, an automobile illumination system, a medical illumination system, a searchlighting illumination system, a field operation illumination system, a navigation illuminationsystem, and a portable illumination system.

The invention provides light-emitting equipment. The light-emitting equipment comprises a first light source, a second light source, a dichroscope, a wavelength conversion device, a first light path adjusting device or a second light path adjusting device and a first scattering optical system. According to the light-emitting equipment, the light mixing effect of the emergent light can be improved by the aid of the first scattering optical system. The color temperature of the emergent light of the light-emitting equipment can be freely adjusted by independently adjusting the power of the first light source and the second light source. A laser capable of emitting light of different dominant wavelengths can be used in the first light source to improve the color rendering index of emergent light of the light-emitting equipment. The light emitted by the second light source is completely used for exciting the wavelength conversion device, compared with the prior art, the light-emitting equipment can achieve output with higher luminous flux under the condition that the optical expansion amount is not increased, and if a polarization selection element is used in the second light source in a matched mode, the output luminous flux of the light-emitting equipment can be further improved.

The invention discloses a light mixing, color mixing and light condensing light ray extraction apparatus for lighting. The light mixing, color mixing and light condensing light ray extraction apparatus comprises a light ray extractor arranged in a light emitting device, wherein luminous crystals are arranged in the light emitting device; the light ray extractor is connected to one end of the luminous crystals and used for extracting light rays emitted by the luminous crystals, mixing the light rays, mixing colors, condensing the light rays and then emitting the light rays out; the light ray extractor comprises a first condenser and a second condenser; two ends of the first condenser are correspondingly a first light ray input end connected to the luminous crystals, and a first light ray output end connected to the second condenser; the end, facing the first light ray output end, of the second condenser is a second light ray input end, while the other end of the second condenser is a second light ray output end; the first condenser and the second condenser have no optical contact; and the plurality of luminous crystals are arranged in parallel or in series on the side, far away fromthe first condenser, of the first light ray input end.

The invention discloses a light emitting device and a light source imaging system. The light emitting device comprises light sources; the light sources comprise light emitting element arrays and composite paraboloid light collectors with light inlets; the light emitting element arrays are arranged at the light inlets of the composite paraboloid light collectors, and thus the composite paraboloid light collectors collect light beams from the light emitting element arrays; and the sum of the light emitting area of all light emitting elements in the light emitting element arrays is greater than or equal to 50% of the area of the light inlets of the composite paraboloid light collectors. According to the light emitting device and the light source imaging system, the light beams with the high brightness can be emerged, and the light out efficiency is improved.