公开(公告)号：US20190163042A1

公开(公告)日：2019-05-30

申请号：US16194951

申请日：2018-11-19

申请人： CANON KABUSHIKI KAISHA

发明人： Hiroshi Yamamoto ,  Yuya Kurata

IPC分类号： G03B21/20

CPC分类号： G03B21/206 ,  G03B21/204 ,  G03B21/2066 ,  G03B33/12

摘要： An image projection apparatus includes a first light source configured to emit first light with a first wavelength band, a wavelength conversion element configured to convert part of the first light into wavelength-converted light with a wavelength band different from the first wavelength band and containing a second wavelength band, a second light source configured to emit second light with a wavelength band contained in the second wavelength band, a first measurement unit configured to measure a light quantity in a first measurement wavelength band as at least part of the second wavelength band, and an acquisition unit configured to acquire information on a light quantity of the first light and a light quantity of the second light by using a measurement result by the first measurement unit.

公开(公告)号：US20190037185A1

公开(公告)日：2019-01-31

申请号：US16072621

申请日：2017-01-26

申请人： BARCO N.V.

发明人： Mihaela TARPAN ,  Allel CHEDAD ,  Bart MAXIMUS ,  Nico COULIER

IPC分类号： H04N9/31 ,  G02B27/10 ,  G03B21/20

CPC分类号： H04N9/3182 ,  C09K11/7774 ,  G02B27/1006 ,  G03B21/2013 ,  G03B21/204 ,  G03B21/206 ,  H04N9/3105 ,  H04N9/3158 ,  H04N9/3161 ,  H04N9/3194

摘要： A light projection system for generating an image with three primary colors, each primary color being respectively defined by a first, second and third wavebands. The system includes a first blue laser source emitting a first beam in a fourth waveband, the first blue laser source having a first laser driver, a second blue laser source emitting a second beam having a central wavelength and a fifth waveband, the second blue laser source having a second laser driver, a substrate having a wavelength conversion element for emitting light at a plurality of wavelengths after absorption of a light beam at an excitation wavelength within a fifth waveband of the second blue laser source and a beam combiner for combining the combined first beam and the converted beam, which combination results in a white beam. Dichroic losses can be reduced by using a green phosphor together with red laser assistance.

公开(公告)号：US20180348615A1

公开(公告)日：2018-12-06

申请号：US15991233

申请日：2018-05-29

申请人： SEIKO EPSON CORPORATION

发明人： Toshiyuki SAKAI

IPC分类号： G03B21/20 ,  G02B27/09 ,  G06F3/0482

CPC分类号： G03B21/206 ,  G02B27/0955 ,  G03B17/54 ,  G03B21/142 ,  G03B21/2033 ,  G03B21/2066 ,  G06F3/0482 ,  H04N9/3185 ,  H04N9/3194

摘要： A projector includes a display section configured to display an image on a display target object, a detection section configured to detect the position of a user, and a control section configured to control the orientation of the image in accordance with the direction from the position of the user toward a reference point.

公开(公告)号：US20180217483A1

公开(公告)日：2018-08-02

申请号：US15873232

申请日：2018-01-17

申请人： SEIKO EPSON CORPORATION

发明人： Kenichiro ASHIZAWA ,  Kenichi KITAGAWA

IPC分类号： G03B21/20

CPC分类号： G03B21/206 ,  G03B21/204 ,  G03B21/2046 ,  G03B21/2053 ,  G03B21/2066 ,  G03B21/2073 ,  G03B21/208 ,  G03B33/12

摘要： An embodiment of a light source device according to the invention includes: a light source unit configured to emit light; a first optical element on which the light emitted from the light source unit is incident; a first drive unit configured to rotate the first optical element; and a control unit configured to control the light source unit and the first drive unit. The control unit is configured to continue rotating the first optical element during a first period until a first predetermined time passes after the light source unit is turned off.

公开(公告)号：US20180217480A1

公开(公告)日：2018-08-02

申请号：US15876650

申请日：2018-01-22

申请人： SEIKO EPSON CORPORATION

发明人： Yuta ITO

IPC分类号： G03B21/20 ,  G03B33/12 ,  G03B21/28 ,  H04N9/31

CPC分类号： G03B21/204 ,  G03B21/2053 ,  G03B21/206 ,  G03B21/2073 ,  G03B21/208 ,  G03B21/28 ,  G03B33/12 ,  H04N9/3102

摘要： Alight source device includes: a light source section; a diffusing device on which a portion of light emitted from the light source section is incident, the diffusing device diffusely emitting the portion of the light; a wavelength conversion device on which another portion of the light emitted from the light source section is incident, the wavelength conversion device diffusely emitting converted light at a wavelength different from that of the another portion of the light; a light combining device combining the portion of the light diffused by the diffusing device with the converted light emitted from the wavelength conversion device; and an auxiliary diffusing element located between the light source section and the diffusing device on an optical path of the portion of the light, the auxiliary diffusing element diffusing the portion of the light and causing the portion of the light to be incident on the diffusing device.

公开(公告)号：US20180205919A1

公开(公告)日：2018-07-19

申请号：US15744444

申请日：2015-07-27

申请人： NEC Display Solutions, Ltd.

发明人： Tomohiro NAKAGAWA

IPC分类号： H04N9/31

CPC分类号： H04N9/3194 ,  G03B21/008 ,  G03B21/2013 ,  G03B21/204 ,  G03B21/206 ,  G03B33/12 ,  H04N9/3105 ,  H04N9/3155 ,  H04N9/3164 ,  H04N9/3182

摘要： A white balance is adjusted with high precision, irrespective of the contents of an image formed by an image forming element. A projector device includes: a plurality of light sources each of which emits a different type of color light; a plurality of image forming elements each of which, upon irradiation with the different type of color light, forms a respective image corresponding to the different type of color; a plurality of sensors (101R, 101G, 101B) each of which detects a respective luminance of the different type of color light with which one corresponding image forming element, from among a plurality of image forming elements, is irradiated; and a controller (controller 302) that adjusts a white balance by correcting respective detection values detected by the plurality of sensors in accordance with the luminances of the images formed by the image forming elements corresponding to the colors of light detected by the sensors, and by controlling outputs from the plurality of light sources in accordance with the corrected values.

公开(公告)号：US20180184057A1

公开(公告)日：2018-06-28

申请号：US15817572

申请日：2017-11-20

申请人： RED.COM, LLC

发明人： James H. Jannard ,  Stuart J. English ,  Gregory Alan Prior ,  Edmund Sandberg ,  Ryan Newham

IPC分类号： H04N9/31 ,  F21V8/00 ,  G03B33/00 ,  G03B21/20 ,  G03B21/00 ,  G02B27/48 ,  G02B27/26 ,  G02B26/12 ,  G02B6/06

CPC分类号： H04N9/3164 ,  G02B6/0005 ,  G02B6/06 ,  G02B26/123 ,  G02B27/26 ,  G02B27/48 ,  G03B21/00 ,  G03B21/005 ,  G03B21/206 ,  G03B33/00 ,  H04N9/3108 ,  H04N9/3117 ,  H04N9/3144 ,  H04N9/315 ,  H04N9/3155 ,  H04N9/3161 ,  H04N9/3167 ,  H04N9/3188 ,  H04N13/324 ,  H04N13/363

摘要： Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical engine module which modulates the laser light according to video signals received from a video processing engine. Some embodiments provide for an optical engine module having a sub-pixel generator configured to display video or images at a resolution of at least four times greater than a resolution of modulating elements within the optical engine module. Systems and methods for reducing speckle are presented in conjunction with the modular video projector system.

公开(公告)号：US20180157149A1

公开(公告)日：2018-06-07

申请号：US15822922

申请日：2017-11-27

申请人： Dolby Laboratories Licensing Corporation

发明人： Alireza MARANDI ,  Gennady IMESHEV ,  Dzhakhangir V. KHAYDAROV ,  Gregory David MILLER

IPC分类号： G02F1/377 ,  H01S3/109 ,  G03B21/20

CPC分类号： G02F1/3775 ,  G02F1/3532 ,  G03B21/2033 ,  G03B21/204 ,  G03B21/206 ,  H01S3/109 ,  H01S5/0092 ,  H01S5/4012 ,  H01S5/405 ,  H01S5/4087

摘要： A device for quasi-phase-matched frequency doubling of broadband light with uncorrelated spectral phase includes a nonlinear optical material, which in turn includes a domain-reversed grating organized in a series of sections along propagation direction of the broadband light through the nonlinear optical material. Each of the sections is characterized by a respective period of the domain-reversed grating. The period within a first connected subset of the series alternates between two discrete values along the propagation direction. A method for designing the domain-reversed grating includes determining a grating function model describing an ideal nonlinear coefficient of a domain-reversed grating, and discretizing the grating function model to a manufacturable grating function having period restricted to a discrete set of manufacturable periods.

公开(公告)号：US09876998B2

公开(公告)日：2018-01-23

申请号：US15040145

申请日：2016-02-10

申请人： SEIKO EPSON CORPORATION

发明人： Kiyoshi Kuroi ,  Akira Egawa

IPC分类号： G03B21/20 ,  H04N9/31 ,  G02B26/00 ,  G02B27/09 ,  G02B27/10 ,  G03B21/22

CPC分类号： H04N9/3111 ,  G02B26/008 ,  G02B27/0966 ,  G02B27/1046 ,  G03B21/204 ,  G03B21/206 ,  G03B21/208 ,  G03B21/22 ,  H04N9/3152 ,  H04N9/3158 ,  H04N9/317

摘要： A light source apparatus includes a light source, a substrate provided rotatably around a predetermined axis of rotation, a scattered light generator which is provided on the substrate and on which light from the light source is incident, a pickup lens provided on the light exiting side of the scattered light generator, and a holding member that holds the pickup lens, and at least one of the contour of a surface closest to the substrate among the surfaces of the holding member and the contour of a surface facing the substrate among the surfaces of the pickup lens is located inside the contour of the substrate when viewed in the direction parallel to the axis of rotation.

公开(公告)号：US09857669B2

公开(公告)日：2018-01-02

申请号：US14392198

申请日：2013-06-28

申请人： Hitachi Maxell, Ltd.

发明人： Koji Hirata ,  Takafumi Ishizu ,  Takatsugu Kawabata

IPC分类号： G03B21/14 ,  G03B21/16 ,  G03B21/20 ,  G03B21/28 ,  G03B21/10

CPC分类号： G03B21/145 ,  G03B21/10 ,  G03B21/16 ,  G03B21/2033 ,  G03B21/206 ,  G03B21/28

摘要： A projection type image display device to be used with a mobile terminal has a housing with an upper side case having a reflective mirror attached thereto and an openable mirror cover formed thereon and a lower side case having a plurality of air exhausting openings provided on a side wall surface thereof. A light source is provided for shining image light that has been magnified and projected onto the reflective mirror; and an image is magnified and projected on the basis of the light from the light source. An optical system is disposed within the lower side case parallel to the bottom surface of the case along a central axis of the device, and also an image processing unit, which includes the light source, and a power supply unit are disposed within the lower case symmetrically with the optical system as the center.