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公开(公告)号：US12114106B2
公开(公告)日：2024-10-08
申请号：US18139959
申请日：2023-04-27
申请人： Ricoh Company, Ltd.
发明人： Yohei Takano , Kazuhiro Fujita , Kasumi Nakamura
CPC分类号： H04N9/3158 , G02B27/0977 , G02B27/1006 , G02B27/18 , G03B21/2033 , G03B21/2066 , H04N9/3152 , H04N9/3164
摘要： A light-source device includes an excitation light source, an optical member, and a wavelength converter. The excitation light source is configured to emit first color light. The optical member has a reflecting surface configured to reflect the first color light emitted from the excitation light source. The wavelength converter includes a wavelength conversion member on which the first color light reflected by the optical member is incident. The wavelength conversion member is configured to convert at least part of the first color light into second color light having a wavelength different from a wavelength of the first color light and emit the second color light. A center of the first color light on the reflecting surface of the optical member does not intersect with a light flux of the first color light emitted from the wavelength converter.
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公开(公告)号：US20240275927A1
公开(公告)日：2024-08-15
申请号：US18644893
申请日：2024-04-24
发明人： Akira KUROZUKA
IPC分类号： H04N9/31
CPC分类号： H04N9/3161 , H04N9/3158
摘要： An image projection apparatus includes: a plurality of light sources configured to respectively emit laser lights of colors different from each other; at least one display element configured to modulate each of the laser lights emitted from the plurality of light sources, on the basis of a video signal; an illumination optical system configured to guide the laser lights emitted from the plurality of light sources, to the display element; and a projection lens configured to project the laser lights modulated by the display element. The illumination optical system separately includes: an optical element of a first system configured to uniformize an intensity distribution of one of the laser lights and guide resultant laser light to the display element; and an optical element of a second system configured to uniformize an intensity distribution of another of the laser lights and guide resultant laser light to the display element.
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公开(公告)号：US12019360B2
公开(公告)日：2024-06-25
申请号：US17421998
申请日：2019-01-30
发明人： Kaoru Ito
CPC分类号： G03B21/206 , G03B21/2013 , H04N9/3158 , H04N9/3182
摘要： A chromaticity adjusting method of a projector includes a first light source for emitting blue light and a second light source for emitting yellow light including red light and green light. A chromaticity value of the blue light is acquired and the chromaticity value and the luminance value of each of the red light and the green light is obtained. The second target chromaticity value is determined based on the first target chromaticity value, the chromaticity value of the blue light, and the chromaticity value and the luminance value of each of the red light and the green light. Light quantities of the first and second light sources are controlled based on the second target chromaticity value. Signal levels of the red, green, and blue color components included in the video signal are controlled according to the difference between the first target chromaticity value and the second target chromaticity value.
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4.发明授权公开(公告)号：US11863914B2
公开(公告)日：2024-01-02
申请号：US17781932
申请日：2020-11-30
发明人： Daniel Richter
IPC分类号： H04N9/31
CPC分类号： H04N9/3158 , H04N9/3108
摘要： A projection apparatus includes a light source for emitting light with an initial spectral distribution, an optical element, and a projection surface. The optical element is arranged in a beam path of light emitted from the light source between the light source and the projection surface. The optical element includes a number of pixels. The pixels of the optical element are each configured to convert light with the initial spectral distribution into light with a predetermined final spectral distribution different from the initial spectral distribution.
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公开(公告)号：US20230396744A1
公开(公告)日：2023-12-07
申请号：US17834731
申请日：2022-06-07
发明人： Zhimin Shi , Chloe Astrid Marie Fabien , Wanli Chi
CPC分类号： H04N9/3129 , G02B27/0172 , H04N9/3155 , H04N9/3158 , G02B6/124
摘要： A display device may include a projector coupled to volume Bragg grating (VBG) based pupil-replicating lightguide. The projector may be a scanning projector or a display panel based projector. A lighting unit for the display panel may have spatially variant spectral composition selected to match angular and wavelength selectivity of the VBGs of the pupil-replicating lightguide, thereby improving light utilization efficiency of the display device. In scanning projector implementations, the center wavelength of the scanned light beam may be varied in coordination with the scanning, to achieve the same effect.
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6.发明公开公开(公告)号：US20230308617A1
公开(公告)日：2023-09-28
申请号：US18187678
申请日：2023-03-22
申请人： Roland Corporation
发明人： Satoshi Wakuda
CPC分类号： H04N9/3155 , H04N9/3158 , H04N9/3182 , H04N9/802 , H04N9/8063 , H04N9/74
摘要： An illumination control device, method and non-transitory computer readable medium storing an illumination control program are provided. The illumination control device includes: a video processor configured to acquire a video and to acquire a feature color which is a characteristic color of the video from the acquired video; a sound processor configured to acquire sound and to acquire a timing at which a sound feature which is a predetermined feature of the sound is output from the acquired sound; a signal processor configured to generate illumination control values based on the feature color acquired by the video processor at the timing acquired by the sound processor and to generate an illumination control signal including a plurality of sets of the illumination control values; and an illumination port configured to transmit the illumination control signal generated by the signal processor to one or more illumination instruments.
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公开(公告)号：US11765325B2
公开(公告)日：2023-09-19
申请号：US17085483
申请日：2020-10-30
发明人： Kristofer Scott Oberascher , Gregory Scott Pettitt , Jeffrey Matthew Kempf , Michael Terry Davis , Xi Zhou
CPC分类号： H04N9/3117 , G03B21/2066 , H04N9/3158
摘要： A system having a color filter having first and second segments. The first and second segments allow respective first and second wavelengths to pass through to a spatial light modulator. The first and second segments also reflect second and first wavelengths, respectively. The reflected first and second wavelengths are recycled and directed towards the color filter.
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公开(公告)号：US11720010B2
公开(公告)日：2023-08-08
申请号：US17539204
申请日：2021-12-01
申请人： Kazuhiro Fujita , Yohei Takano , Makoto Hirakawa , Shigeaki Imai
发明人： Kazuhiro Fujita , Yohei Takano , Makoto Hirakawa , Shigeaki Imai
CPC分类号： G03B21/204 , G02B26/008 , G02B27/141 , G03B21/208 , G03B21/2013 , G03B21/2066 , H04N9/3158 , H04N9/3161
摘要： A light source device includes a light source, a plurality of wavelength conversion units, and a plurality of optical systems. The plurality of wavelength conversion units each includes a wavelength conversion region configured to receive light emitted from the light source and emit light with a wavelength different from a wavelength of the received light. The plurality of optical systems are configured to form images of wavelength conversion regions of the plurality of wavelength conversion units. The light source is configured to irradiate the wavelength conversion units with light at a same timing. The plurality of optical systems are configured to cause the images of the wavelength conversion regions of the plurality of wavelength conversion units to be adjacent to or superimposed on each other.
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9.发明授权公开(公告)号：US11647171B2
公开(公告)日：2023-05-09
申请号：US17195510
申请日：2021-03-08
发明人： Chen-Wei Fan , Ming-Tsung Weng
CPC分类号： H04N9/3158 , G03B21/204 , G03B21/2066 , G03B21/16
摘要： A projection apparatus includes an illumination system configured to output an illumination beam, a light valve and a projection lens. The illumination system includes a laser light source configured to emit a laser beam and a wavelength conversion element. A first region of the wavelength conversion element includes at least one first and second optical function region. In a first sub-time interval, the first optical functional region guides the laser beam to a first position with a first optical path, wherein the light valve is located at the first position. In the second sub-time interval, the second optical functional region guides the laser beam to a second position with a second optical path, wherein the second position is different from the first position. The projection apparatus of the present invention has good image quality.
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公开(公告)号：US20190191133A1
公开(公告)日：2019-06-20
申请号：US16327155
申请日：2017-08-07
申请人： Michael OSTROW
发明人： Michael Ostrow
CPC分类号： H04N9/3161 , G03B21/16 , G03B21/204 , H01L25/167 , H01L33/08 , H01L33/50 , H01S5/005 , H01S5/0071 , H01S5/32341 , H04N9/3111 , H04N9/3158
摘要： The present invention is a light source for a projection display. The light sources has a heat sink; a phosphor composition provided on the heat sink, wherein the phosphor composition is a phosphor powder, a ceramic phosphor or a liquid phosphor; one or more lasers directed at the phosphor composition; an electronic circuit connected to the one or more lasers to regulate power output to the one or more lasers; and a power source connected to the electronic circuit, wherein when the one or more lasers are activated exciting the phosphor composition the light emitted from the phosphor composition is the light source for the projection display.
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