Title:
STAGE LAMP OPTICAL FOCUSING METHOD AND STAGE LAMP OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/124683
Kind Code:
A1
Abstract:
A stage lamp optical focusing method and a stage lamp optical system. The method comprises: collecting return light which is from a projection light spot and which returns to a focal plane (2) of a light source (1) via a focusing lens group (3), performing real-time imaging on a first light sensing module, and a focusing system adjusting the position of the focusing lens group (3) according to real-time imaging, such that a real-time focusing point of the return light coincides with an ideal focusing point, wherein the ideal focusing point is the focal point of the light source (1) or a conjugate point of the focal point. It is conducive to the improvement of the focusing precision of a stage lamp, and it is more conducive to the implementation of automatic focusing, without relying on manual focusing, such that it can be ensured that the stage lamp automatically projects clear patterns at different projection positions.
Inventors:
JIANG WEIKAI (CN)
Application Number:
PCT/CN2022/134401
Publication Date:
July 06, 2023
Filing Date:
November 25, 2022
Export Citation:
Assignee:
GUANGZHOU HAOYANG ELECTRONICS CO LTD (CN)
International Classes:
F21V14/06; F21W131/105; F21W131/406
Foreign References:
| CN114321840A | 2022-04-12 | |||
| CN102636939A | 2012-08-15 | |||
| CN107743194A | 2018-02-27 | |||
| CN110793000A | 2020-02-14 | |||
| CN107143780A | 2017-09-08 | |||
| US20080158382A1 | 2008-07-03 | |||
| US20100026972A1 | 2010-02-04 | |||
| CN108087762A | 2018-05-29 |
Attorney, Agent or Firm:
GUANGZHOU RUNHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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