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Patent Searching and Data


Title:
PROJECTION LENS
Document Type and Number:
WIPO Patent Application WO/2019/169889
Kind Code:
A1
Abstract:
Disclosed is a projection lens. The projection lens sequentially comprises from an image source side to an imaging side along an optical axis: a first lens, a second lens, and a third lens. The first lens has a positive focal power, and the surface thereof near the image source side is convex; the second lens has a positive focal power or a negative focal power; the third lens has a positive focal power, and is a meniscus lens with the surface near the imaging side convex. An image source height ImgH of the projection lens and a total effective focal length f of the projection lens meet ImgH/f<0.2.

Inventors:
WANG, Xinquan (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
HUANG, Lin (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
Application Number:
CN2018/114515
Publication Date:
September 12, 2019
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO., LTD (No. 66-68 Shunyu Road, Yuyao Ningbo City, Zhejiang 0, 315400, CN)
International Classes:
G02B13/18; G02B9/16; G02B11/08; G02B13/00
Foreign References:
CN108279485A2018-07-13
CN107505689A2017-12-22
CN201965289U2011-09-07
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (19 A, Tower A InDo Building,No. 48A Zhichun Road, Haidian District, Beijing 8, 100098, CN)
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