Title:
DOUBLE-TELECENTRIC PROJECTION LENS AND HEAD-UP DISPLAY DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/147911
Kind Code:
A1
Abstract:
A double-telecentric projection lens (100), comprising a front lens group (120), a rear lens group (130), and an equivalent prism (140) which are sequentially arranged from an image surface (M) to a DMD chip (110). The front lens group (120) comprises a first lens (121), a second lens (122), a third lens (123), a fourth lens (124), and a fifth lens (125) which are arranged in sequence; the rear lens group (130) comprises a sixth lens (136), a seventh lens (137), an eighth lens (138), and a ninth lens (139) which are arranged in sequence; the third lens (123) and the fourth lens (124) form a double-cemented lens; the DMD chip (110) is configured to emit two images simultaneously; and when the DMD chip (110) emits the two images simultaneously, the two images emitted simultaneously are imaged at different positions after being emitted by the double-telecentric projection lens (100). The double-telecentric projection lens (100) can be applied to a projection optical system (10) in a head-up display device (B) of a vehicle (1) so as to realize simultaneous projection imaging of two screens, and has a good imaging effect.
Inventors:
LIANG JIUWEI (CN)
ZHU WEIZHAN (CN)
DING MINGNEI (CN)
YEUNG STEVE (CN)
GAO ZHIQIANG (CN)
ZHU WEIZHAN (CN)
DING MINGNEI (CN)
YEUNG STEVE (CN)
GAO ZHIQIANG (CN)
Application Number:
PCT/CN2021/083379
Publication Date:
July 14, 2022
Filing Date:
March 26, 2021
Export Citation:
Assignee:
IVIEW DISPLAYS SHENZHEN CO LTD (CN)
International Classes:
G02B27/01; B60K35/00
Foreign References:
| CN110764339A | 2020-02-07 | |||
| CN106291890A | 2017-01-04 | |||
| CN106125305A | 2016-11-16 | |||
| CN110208932A | 2019-09-06 | |||
| CN103728821A | 2014-04-16 | |||
| CN106200224A | 2016-12-07 | |||
| JP2021000890A | 2021-01-07 |
Attorney, Agent or Firm:
LIUJIA CHINA IP LAW OFFICE (CN)
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