公开(公告)号：US20230350205A1

公开(公告)日：2023-11-02

申请号：US18218439

申请日：2023-07-05

Applicant: Microsoft Technology Licensing, LLC

Inventor： Tapani Matias ALASAARELA ,  Simo Kaarlo Tapani TAMMELA

IPC: G02B27/01 ,  G03B21/00

CPC classification number: G02B27/0172 ,  G02B27/0176 ,  G03B21/008 ,  G02B2027/0178 ,  G03B21/2033

Abstract: A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

公开(公告)号：US11803114B2

公开(公告)日：2023-10-31

申请号：US17892104

申请日：2022-08-21

Applicant: Coretronic Corporation

Inventor： Ku-Hui Hsu

IPC: G03B21/20 ,  G02B27/28 ,  G03B33/12

CPC classification number: G03B21/2033 ,  G02B27/283 ,  G03B21/208 ,  G03B21/2013 ,  G03B21/2066 ,  G03B21/2073 ,  G03B33/12

Abstract: An illumination system includes first and second red light sources, first and second green light sources, first and second blue light sources, and a first light-splitting device. The first red light source, the first green light source, and the first blue light source respectively provide a first red light beam, a first green light beam, and a first blue light beam with a first polarization state. The second red light source, the second green light source, and the second blue light source respectively provide a second red light beam, a second green light beam, and a second blue light beam with a second polarization state. The first light-splitting device is disposed on transmission paths of the first and second red light beams, the first and second green light beams, and the first and second blue light beams to form an illumination beam.

公开(公告)号：US11795956B2

公开(公告)日：2023-10-24

申请号：US17336290

申请日：2021-06-01

Applicant: AIR COOL INDUSTRIAL CO., LTD.

Inventor： Cliff Wang

IPC: F04D25/08 ,  F21V33/00 ,  G03B21/16 ,  G03B21/20 ,  F21W121/00 ,  F21Y115/10 ,  F21Y113/13 ,  F04D29/00

CPC classification number: F04D25/088 ,  F21V33/0096 ,  G03B21/16 ,  G03B21/2033 ,  F04D29/005 ,  F21W2121/008 ,  F21Y2113/13 ,  F21Y2115/10

Abstract: A ceiling fan with a ceiling projection function includes a ceiling fan body and a ceiling fan housing. The ceiling fan body includes a plurality of blades, a motor that drives the blades to rotate, and a hanging rod. The ceiling fan housing is provided with a pattern hole unit and a light-emitting unit. The pattern hole unit has at least one pattern hole. The pattern hole of the pattern hole unit passes through the ceiling fan housing. The light-emitting unit has at least one light-emitting member. When in use, the light-emitting member of the light-emitting unit projects a light beam passing through the pattern hole of the pattern hole unit to project a pattern of the pattern hole of the pattern hole unit outside the ceiling fan housing and above the blades.

公开(公告)号：US20230324781A1

公开(公告)日：2023-10-12

申请号：US18180138

申请日：2023-03-08

Applicant: Coretronic Corporation

Inventor： Meng-Hsuan Lin ,  Yen-Lin Chen

IPC: G03B21/20 ,  G02B3/00 ,  G02B27/30 ,  G02B19/00

CPC classification number: G03B21/208 ,  G02B3/0056 ,  G03B21/2013 ,  G03B21/2033 ,  G02B27/30 ,  G02B19/0019

Abstract: An illumination system includes a light source module, a first lens array, a condensing element, a second lens array, and a prism element. The light source module is configured to provide an illumination beam. The first lens array is disposed on the transmission path of the illumination beam. The condensing element is disposed on the transmission path of the illumination beam. The first lens array is located between the light source module and the condensing element. The second lens array is disposed on the transmission path of the illumination beam. The prism element is disposed on the transmission path of the illumination beam. The second lens array is located between the condensing element and the prism element, wherein the surface area of the second lens array is greater than the surface area of the first lens array.

公开(公告)号：US20230314925A1

公开(公告)日：2023-10-05

申请号：US18072431

申请日：2022-11-30

Applicant: Changsha Pujiade Photoelectric Technology Co., Ltd

Inventor： Ling CHEN

IPC: G03B33/08 ,  G03B21/00 ,  G03B21/20

CPC classification number: G03B33/08 ,  G03B21/006 ,  G03B21/2013 ,  G03B21/208 ,  G03B21/2033

Abstract: The disclosure provides a new field sequential single LCD projector, includes an LED light source, a collecting and collimating device, a light-combining and color-filtering device, an intermediate reflector, a focusing device, a light-homogenizing device, an outgoing lens, a LCD light valve, a field lens, an imaging reflector and a projection lens which are arranged in sequence according to the light traveling direction. The LED light source includes a red light source, a green light source and a blue light source. Compared with the existing full-color light valve technology, under the same technical condition, the efficiency of the light valve is greatly improved, the power of the light source is greatly reduced, and the image color gamut is greatly improved, so that the projector can output higher brightness and has vast market adaptability.

公开(公告)号：US11774837B2

公开(公告)日：2023-10-03

申请号：US17421271

申请日：2019-01-10

Applicant: OSRAM GmbH

Inventor： Mathieu Rayer ,  Boaz Sturlesi

IPC: G03B21/20 ,  G02B27/42

CPC classification number: G03B21/2033 ,  G02B27/4205

Abstract: An image displaying device includes a micro-LED-array having several LEDs, a controller electrically connected to the micro-LED-array for driving the LEDs such that they emit light, and a lens-array having several lenses. Each lens is assigned to one of the LEDs. Each lens is arranged in the light path of the light emitted by the corresponding LED such that the light emitted by the LEDs passes through the corresponding lens and is projected onto a screen. The lens-array is configured such that, when seen from the screen, a virtual image of the micro-LED-array is formed behind the micro-LED-array. The lens-array is a meta-lens-array and the lenses are meta-lenses.

公开(公告)号：US11774834B2

公开(公告)日：2023-10-03

申请号：US17479345

申请日：2021-09-20

Applicant: STMicroelectronics LTD ,  STMicroelectronics S.r.l.

Inventor： Alex Domnits ,  Elan Roth ,  Davide Terzi ,  Luca Molinari ,  Marco Boschi

IPC: G03B21/14 ,  H04N9/31 ,  G01J1/02 ,  G01J1/44 ,  G03B21/00 ,  G03B21/20

CPC classification number: G03B21/142 ,  G01J1/0238 ,  G01J1/44 ,  G03B21/008 ,  G03B21/2033

Abstract: A scanning laser projector includes an optical module and projection engine. The optical module includes a laser generator outputting a laser beam, and a movable mirror scanning the laser beam across an exit window defined through the housing in a scanning pattern wider than the exit window such that the laser beam is directed through the exit window in a projection pattern that is smaller than and within the scanning pattern. A first light detector is positioned about a periphery of the exit window such that as the movable mirror scans the laser beam in the scan pattern, at a point in the scan pattern where the laser beam is scanned across an interior of the housing and not through the exit window, the laser beam impinges upon the first light detector. The projection engine adjusts driving of the movable mirror based upon output from the first light detector.

公开(公告)号：US20230300316A1

公开(公告)日：2023-09-21

申请号：US18323004

申请日：2023-05-24

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Martin J. Richards

IPC: H04N13/398 ,  H04N13/32 ,  H04N13/324 ,  H04N13/365 ,  G02B27/09 ,  G02B27/10 ,  G02B27/14 ,  G09G3/34 ,  H04N9/31 ,  G02B19/00 ,  G02B5/02 ,  H04N13/363 ,  G09G5/10 ,  G02B5/32 ,  G03B21/00 ,  G03B21/20

CPC classification number: H04N13/398 ,  H04N13/32 ,  H04N13/324 ,  H04N13/365 ,  G02B27/0905 ,  G02B27/0988 ,  G02B27/1026 ,  G02B27/145 ,  G09G3/3426 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3182 ,  H04N9/3126 ,  H04N9/3138 ,  G09G3/3413 ,  G02B19/0057 ,  G02B19/0014 ,  G02B5/0252 ,  H04N13/363 ,  G09G5/10 ,  G02B5/32 ,  G03B21/005 ,  G03B21/2033 ,  G09G3/001

Abstract: Light from an array of laser light sources are spread to cover the modulating face of a DMD or other modulator. The spread may be performed, for example, by a varying curvature array of lenslets, each laser light directed at one of the lenslets. Light from neighboring and/or nearby light sources overlap at a modulator. The lasers are energized at different energy/brightness levels causing the light illuminating the modulator to itself be modulated (locally dimmed). The modulator then further modulates the locally dimmed lights to produce a desired image. A projector according to the invention may utilize, for example, a single modulator sequentially illuminated or separate primary color modulators simultaneously illuminated.

公开(公告)号：US11740458B2

公开(公告)日：2023-08-29

申请号：US16523706

申请日：2019-07-26

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Tapani Matias Alasaarela ,  Simo Kaarlo Tapani Tammela

IPC: G02B27/01 ,  G03B21/00 ,  G03B21/20

CPC classification number: G02B27/0172 ,  G02B27/0176 ,  G03B21/008 ,  G02B2027/0178 ,  G03B21/2033

Abstract: A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

公开(公告)号：US11726397B2

公开(公告)日：2023-08-15

申请号：US17543935

申请日：2021-12-07

Applicant: IVIEW DISPLAYS (SHENZHEN) COMPANY LTD.

Inventor： Weizhan Zhu ,  Xiaofeng Tang ,  Mingnei Ding ,  Steve Yeung ,  Zhiqiang Gao

IPC: G03B21/20 ,  G03B21/00 ,  G02B13/16

CPC classification number: G03B21/208 ,  G02B13/16 ,  G03B21/008 ,  G03B21/2013 ,  G03B21/2033

Abstract: The present disclosure provides a projection apparatus. The projection apparatus includes: a light supply device, including an LED lamp and a collimator fly-eye lens, wherein lamp bodies of the LED lamp are arrayed and the LED lamp is capable of simultaneously emitting red, green, and blue light rays, and the collimator fly-eye lens is capable of collimating the light ray emitted by each of the lamp bodies; an optical path conversion device, configured to convert a direction of the light rays emitted by the light supply device; a DMD device, configured to process the light rays from the optical path conversion device and feed the processed light rays to the optical path conversion device; and a projection lens device; wherein the light rays transmitted by the optical path conversion device to the projection lens device to achieve image projection.