CN115516852A - 投影设备及其视场角调整方法 - Google Patents

投影设备及其视场角调整方法 Download PDF

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Publication number
CN115516852A
CN115516852A CN202180036211.9A CN202180036211A CN115516852A CN 115516852 A CN115516852 A CN 115516852A CN 202180036211 A CN202180036211 A CN 202180036211A CN 115516852 A CN115516852 A CN 115516852A
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optical signal
receiving
target
field angle
assembly
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CN202180036211.9A
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CN115516852B (zh
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陈许
朱亚文
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Qingdao Hisense Laser Display Co Ltd
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Qingdao Hisense Laser Display Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using laser light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Projection Apparatus (AREA)

Abstract

本申请公开了一种投影设备及其视场角调整方法，属于投影显示领域。该投影设备中的控制电路用于根据光信号发射组件的光输出时间值和光信号接收组件的光接收时间值，确定目标物与投影设备之间的目标距离；根据目标距离，调整光信号接收组件的接收视场角；并根据目标距离对激光光源进行亮度调整。由于调整后的接收视场角的大小与目标距离的长短负相关，因此在目标物距离投影设备较近时，该较大的接收视场角可以增大光信号接收组件的检测范围，使得对目标物的检测范围更全面，由此提高了对目标物检测的可靠性。同时由于能够根据目标距离，对激光光源的亮度进行调整，因此有效保护了人眼。

Description

PCT国内申请，说明书已公开。

Claims (12)

  1. PCT国内申请，权利要求书已公开。
CN202180036211.9A 2020-05-18 2021-04-23 投影设备及其视场角调整方法 Active CN115516852B (zh)

Applications Claiming Priority (3)

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CN202010419446.3A CN113691787B (zh) 2020-05-18 2020-05-18 投影设备及其视场角调整方法
CN2020104194463 2020-05-18
PCT/CN2021/089280 WO2021233068A1 (zh) 2020-05-18 2021-04-23 投影设备及其视场角调整方法

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CN115516852B CN115516852B (zh) 2024-03-29

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CN202211167587.6A Pending CN115802015A (zh) 2020-05-18 2020-05-18 投影设备及其视场角调整方法
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005227548A (ja) * 2004-02-13 2005-08-25 Casio Comput Co Ltd 投影装置、投影装置の光源制御方法
CN103576431A (zh) * 2013-11-20 2014-02-12 巴可伟视(北京)电子有限公司 一种应用于高亮度激光投影机使用现场对人眼实施保护的方法及系统装置
CN209014726U (zh) * 2018-09-28 2019-06-21 北京理工大学 一种无人驾驶变视场固态面阵激光雷达测距系统
CN111025319A (zh) * 2019-12-28 2020-04-17 深圳奥比中光科技有限公司 一种深度测量装置及测量方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102566220B (zh) * 2010-12-20 2015-11-18 鸿富锦精密工业（深圳）有限公司 投影装置保护系统及保护方法
TW201445240A (zh) * 2013-05-29 2014-12-01 Hon Hai Prec Ind Co Ltd 投影裝置保護系統及保護方法
CN104698727B (zh) * 2015-03-24 2017-01-11 海信集团有限公司 用于激光投影设备的人体保护方法、装置和激光投影设备
CN208299916U (zh) * 2018-05-02 2018-12-28 深圳吉祥星科技股份有限公司 一种投影仪

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005227548A (ja) * 2004-02-13 2005-08-25 Casio Comput Co Ltd 投影装置、投影装置の光源制御方法
CN103576431A (zh) * 2013-11-20 2014-02-12 巴可伟视(北京)电子有限公司 一种应用于高亮度激光投影机使用现场对人眼实施保护的方法及系统装置
CN209014726U (zh) * 2018-09-28 2019-06-21 北京理工大学 一种无人驾驶变视场固态面阵激光雷达测距系统
CN111025319A (zh) * 2019-12-28 2020-04-17 深圳奥比中光科技有限公司 一种深度测量装置及测量方法

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WO2021233068A1 (zh) 2021-11-25
CN115516852B (zh) 2024-03-29
CN113691787A (zh) 2021-11-23
CN115802015A (zh) 2023-03-14
CN113691787B (zh) 2022-07-29

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