8 results about "Wavelength conversion" patented technology

The invention discloses a light source system and a projector. The light source system comprises a wavelength conversion apparatus, a filtering apparatus and a dodging apparatus. The wavelength conversion apparatus comprises at least two fluorescent areas, wherein different fluorescent areas are provided with different wavelength conversion materials which generate exited light with different wavelength coverage areas; the filtering apparatus is provided with N light processing diaphragms which are successively arranged in the emergent light path of the excited light, wherein a one-to-one correspondence is formed between the light processing diaphragms and the fluorescent areas in the wavelength conversion apparatus; each light processing diaphragm reflects the excited light generated by the fluorescent area in the wavelength conversion apparatus corresponding to the light processing diaphragm to the dodging apparatus, wherein a minimum N is the number of the fluorescent areas of the wavelength conversion apparatus; the light processing diaphragms are curved surface diaphragms. According to the invention, the problem of greater space occupation caused by the loosened structure of a light source system of the prior art is solved.

The invention discloses a light source device, a light source producing method and a laser projector comprising the light source device. The light source device comprises a first laser source, a collimation part, a reflecting part, a first light condensation part, a dichroic part, a driving part, a second light condensation part, a wavelength converting part, a third light condensation part, a light receiving part and a reflecting steering lens group. According to the light source device, the light source producing method and the laser projector comprising the light source device, the problem that a light source generates periodic brightness variation can be effectively avoided, and the quality of projector images is greatly improved.

A light source device of the present invention includes a light source that emits first light, a wavelength conversion member that converts the wavelength of the first light made incident on a surface of the wavelength conversion member on the side of the light source and emits second light different from the first light, and a supporting member that supports the wavelength conversion member at an end portion of a surface of the wavelength conversion member on the side of the light source. A light absorbing member is provided between a surface of the wavelength conversion member on the side of the light source and the supporting member.

The embodiment of the invention discloses a luminous device and a related projection system. The luminous device comprises a luminous light source, a first wavelength conversion layer and a first light guide component, wherein the luminous light source comprises a light emitting surface comprising a first area and a second area and is used for emitting the first light; the first wavelength conversion layer comprises a first surface and a second surface which are opposite to each other; the first surface is used for absorbing the first light emitted from the first area of the luminous light source so as to emit the received laser; the first light guide component is used for receiving the first light emitted from the second area of the luminous light source and guiding at least one part of the first light to the second surface of the first wavelength conversion layer so as to stimulate the first wavelength conversion layer; and the first light guide component is also used for guiding and emitting the emergent light of the first wavelength conversion layer. According to the luminous device, the luminous brightness of the luminous device can be improved.

With a wavelength conversion device based on a nonlinear optical effect, when arrayed waveguides including an intended nonlinear waveguide are fabricated, unwanted slab waveguides are inevitably formed. The slab waveguides can cause an erroneous measurement in the selection of a waveguide having desired characteristics from the arrayed waveguides. The erroneous measurement can lead to redoing steps for fabricating the wavelength conversion device and a decrease in the yield and inhibit the evaluation of the characteristics in selection of the waveguide and the subsequent fabrication of the wavelength conversion device from being efficiently performed. A wavelength conversion device according to the present invention includes a plurality of waveguides formed on a substrate, and a plurality of slab waveguides that are arranged substantially in parallel with and spaced apart from the plurality of waveguides, and each of the slab waveguides has a grating structure that reflects light of a particular wavelength.

An infrared - visible wavelength converting detector with gallium nitride base is prepared by gallium nitride based material and series - couples multiple quantum well infrared detector as well as luminous diode on the same chip. It features that multiple quantum well infrared detector is used to convert infrared radiation signal to be infrared photoelectric signal and then luminous diode is used to infrared photoelectric signal to be light signal of visible waveband.

The invention provides a light-emitting device and a display device. The light-emitting device extracts light emitted from a side surface (a second light-emitting surface) of a semiconductor light source through a light extraction member, collects the light from the side surface to a top part, emits the light together with a first light-emitting surface to a wavelength conversion member, and emits white light from the top part (a second contact surface) of the wavelength conversion member. After passing through the light-transmitting layer, the white light is emitted through the thickness direction of the light-transmitting layer and the top provided with the light suppression layer, and the top white light is partially suppressed by the light suppression layer. According to the light-emitting device, the overall light emitting intensity can be improved, top light emitting can be partially restrained, the situation that in the prior art, the top is directly and completely restrained, a dark area appears on the top, and an overall brightness loss is too large is avoided, in addition, when the light-emitting device is used in the display device, the light mixing distance can be very small, and the display device is thinner and high in overall brightness.