Title:
PROJECTION LENS, PROJECTION DEVICE, DISPLAY DEVICE, AND TRANSPORT VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/179246
Kind Code:
A1
Abstract:
A projection lens (200), a projection device (1500, 1810), a display device (1800, 1900, 2010), and a transport vehicle. The projection lens (200) comprises a first lens group (210), a diaphragm (220) and a second lens group (230) which are sequentially arranged along a projection light path. The first lens group (210) is used to refract first image light and output second image light to the diaphragm (220). The diaphragm (220) is used to allow the second image light to pass therethrough. The second lens group (230) is used to refract the second image light and output third image light. The first image light, the second image light and the third image light carry a first image, a second image and a third image, respectively, and the third image is an image obtained by magnifying long and short sides of the first image at different magnifications. The projection lens (200) enables long and short sides of an image to be magnified at different magnifications. When the projection lens (200) is applied to a projection device (1500, 1810), the utilization efficiency of image light can be improved, and the loss of image light is reduced.
Inventors:
FANG ZHIFANG (CN)
ZHAO HAN (CN)
ZHAO HAN (CN)
Application Number:
PCT/CN2023/075939
Publication Date:
September 28, 2023
Filing Date:
February 14, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B13/00; G02B9/64; G02B27/01
Foreign References:
| CN203673147U | 2014-06-25 | |||
| CN1160215A | 1997-09-24 | |||
| CN104007541A | 2014-08-27 | |||
| CN214311070U | 2021-09-28 | |||
| US20190369396A1 | 2019-12-05 |
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