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Patent Searching and Data


Title:
IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2012/169838
Kind Code:
A3
Abstract:
The present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (-) refractive power, a third lens having negative (-) refractive power, a fourth lens having negative (-) refractive power, wherein the imaging lens meets a conditional expression of -0.5 < f/f3 < 0 and -0.5 < f/f4 < 0, where f is an entire focus distance of the imaging lens, f3 is a focus distance of the third lens, and f4 is a focus distance of the fourth lens.

Inventors:
KWON DUKKEUN (KR)
Application Number:
PCT/KR2012/004563
Publication Date:
April 04, 2013
Filing Date:
June 08, 2012
Export Citation:
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Assignee:
LG INNOTEK CO LTD (KR)
KWON DUKKEUN (KR)
International Classes:
G02B9/34; G02B11/22; G02B13/18
Foreign References:
US20090109552A12009-04-30
JP2007017984A2007-01-25
JP2009098513A2009-05-07
JP2002228922A2002-08-14
Other References:
See also references of EP 2718759A4
Attorney, Agent or Firm:
JIN, Cheon Woong et al. (Deuk-Young Bldg.423-5 Dogokdong, Gangnam-Gu, Seoul 135-855, KR)
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