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

Disclosed is an illuminating optical system, which has a small etendue, longer service life, and a higher luminance. The system is provided with: a laser light source, which generates excitation light; a fluorescent body, which generates fluorescence when the excitation light is applied; a light tunnel, through which the excitation light inputted from one end is outputted from the other end toward the fluorescent body, and the fluorescence generated by means of the fluorescent body is outputted from said one end; and a dichroic mirror, which is provided between the laser light source and the light tunnel, and passes through the fluorescence or the excitation light, and reflects the other.

A stereoscopic digital image projecting system has a light source system energizable to provide polarized illumination having a first polarization state and a beam splitting system alternately generating first and second light beams having different polarization states from the polarized illumination. A combining system has a polarization beam combiner that combines the first and second light beams into a combined light beam. A spatial light modulator is used to modulate the combined light beam in a manner consistent with stereoscopic image data to form a first modulated image from illumination in the combined light beam having the first polarization state and to form a second modulated image from illumination in the combined light beam having the second polarization state. Projection optics are configured to project the first and second modulated images onto a display surface.

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 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 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.

A display system, comprising: a light source (101) used for emitting first light (1); a light homogenizing device (102) comprising a light-incident surface, and used for receiving and homogenizing the first light (1); a light modulator (103) used for receiving at least part of the light emitted by the light homogenizing device (102), modulating the at least part of the light incident on the light modulator (103) according to an image signal, and emitting modulated light (2) and non-modulated light (3); and a light guiding device (104) used for guiding at least part of the non-modulated light (3) emitted by the light modulator (103) to the light-incident surface of the light homogenizing device (102), so that the light passes through the light homogenizing device (102) and then enters the light modulator (103).

The invention provides a wavelength conversion apparatus. The wavelength conversion apparatus comprises a wavelength conversion layer, a reflecting layer and a light distribution transformation layer, wherein the wavelength conversion layer comprises a first surface and second surface which are opposite to each other; the reflecting layer is located on one side of the first surface of the wavelength conversion layer and reflects stimulated light; the light distribution transformation layer is located on one side of the second surface of the wavelength conversion layer. The light distribution transformation layer comprises a plane and a microstructure surface which are opposite to each other. The plane faces the second surface of the wavelength conversion layer. The microstructure surface comprises a plurality of microstructure units. The shape of the microstructure unit is a pyramid or a cone. The invention also provides a luminous apparatus which comprises the wavelength conversion apparatus and an excitation light source emitting the excitation light. In the wavelength conversion apparatus and the luminous apparatus of the invention, the light distribution transformation layer is used to reflect the small-angle light, and propagation and scattering of the light between the light distribution transformation layer and the reflecting layer are used to realize compression of the angel the light emitted by the wavelength conversion layer so as to reduce an optical extended amount of luminescence.

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.