Patent
Projection optical system
Zhao Wei,Xie Yongjun,FuZeng Kang,ZhouFeng Zhang +3 more
- 05 Jun 2013
6
TL;DR: In this paper, the authors propose a utility model for a projection optical system, which consists of a projection image surface, a refraction projection system, a second reflection system, and a first reflection optical system.
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Abstract: The utility model relates to a projection optical system, comprising a projection optical system image surface, a refraction projection optical system, a second reflection optical system, and a first reflection optical system. The projection optical system image surface, the refraction projection optical system, and the second reflection optical system are disposed on a same optical path. The first reflection optical system is disposed on an optical path of reflected light which is formed after reflection of the second reflection optical system. The utility model provides the projection optical system which has simple optical paths, small projection distortion, small chromatic aberration, clear imaging, uniform projection luminance, compact structure, and small size.
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Citations
Patent
Ultra-short-focus projection lens and laser projection equipment
Yin Liang,Li Xiaoping +1 more
- 26 Oct 2016
TL;DR: In this article, an ultra-short-focus projection lens consisting of a refractor group and a reflector group is presented, which can achieve the projection of a short-focus large-size image, has better capability of aberration correction, and can improve the projection imaging quality.
7
Patent
Vehicle projection system
Zhang Enxin,Lang Haitao,Yang Jia +2 more
- 28 Jun 2019
TL;DR: In this article, a vehicle projection system consisting of an illumination module, a dynamic image display device and a projection module is described. But the system is not shown in the video.
1
Patent
Curved-surface reflection type ultra-short focal projection lens
Liu Meihong,Mu Lin +1 more
- 27 May 2015
TL;DR: In this article, a curved-surface reflection type ultra-short focal projection lens was proposed, where the curved surface reflection unit was arranged on a transmitting path of forward light rays of the front lens set and used for reflecting light rays emitted by the rear lens set, so that the purpose of ultra short focal projection is realized, and a field angle is increased.
1
Patent
Projection imaging system and laser projection device
Yin Liang,Luo Chao,Ma Mingchen +2 more
- 15 Nov 2019
TL;DR: In this article, a projection imaging system consisting of a refractor group and a mirror is described, where the refractor groups and the mirror are arranged in sequence along the light exiting direction of a light valve and satisfy the formula: 0.9
1
Patent
Optical system with increased field angle, and projection lens
Liu Meihong,Mu Lin,Ji Chaochao +2 more
- 13 Jul 2016
TL;DR: In this paper, an optical system with an increased field angle and a projection lens is presented, which is used for amplifying a first image subjected to the optical system into a second image.
References
Patent
Projection optical system and projection display device using the same
Takashi Suzuki
- 18 May 2009
TL;DR: In this paper, a projection optical system having a magnification side and a reduction side for forming a magnified image on a conjugate with a reduction-side image surface is described.
47
Patent
Projection optical system and image projection device
Hibiki Tatsuno
- 06 Dec 2011
TL;DR: A projection optical system for projecting an image on a surface is described in this paper, where an image is an enlarged image of an image which is formed on an image forming element.
34
Patent
Projection type image display device
Nobutaka Minefuji
- 07 Oct 2008
TL;DR: In this article, a projection type image display device comprising of a first refracting optical system having a plurality of lenses, a reflecting optical section having at least one concave reflecting surfacer, and an image forming optical section disposed on an anterior stage of a light path as the reduction side of the projection optical system was presented.
21
Patent
Projection optical system and projector including the same
Eiji Morikuni,Makoto Otani +1 more
- 14 Jun 2012
TL;DR: A projection optical system as mentioned in this paper is a system which, when projecting an image of an optical modulator onto a projection surface on an enlarged scale, differs the aspect ratio of the image of the optical modulators and the image projected onto the projection surface, and includes a correction optical component with a surface rotationally symmetrical to the optical axis.
15
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