SMALL IMAGING LENS AND IMAGING DEVICE - KONICA MINOLTA OPTO INC

Title:

SMALL IMAGING LENS AND IMAGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2004/107009

Kind Code:

A1

Abstract:

A small imaging lens having aberration correction and image-side telecentric characters, comprising, sequentially from an object side, a first lens group (G1), a second lens group (G2), a third lens group (G3) and a fourth lens group (G4). The first lens group (G1) consists of only a meniscus-shaped first lens (L1) with its concave plane facing the object side, the second lens group has as a whole a positive refractive power and consists of, sequentially from an object side, a (2-1)th lens (L2a) having a positive refractive power and a (2-2)th lens (L2b) being joined to or separated from the lens (L2a) and having a negative refractive power, and the third lens group consists of only a meniscus-shaped third lens (L3) with its concave plane facing the object side, and the fourth lens group consists of only a fourth lens (L4).

More Like This:

WO/2018/233195	OPTICAL IMAGING SYSTEM
JPS5170654	MIJIKAISHOTENKYORI OOKIIKOKEINOKOGAKUSHISUTEMU

Inventors:

MATSUI TAKUMI (JP)
SANO EIGO (JP)

Application Number:

PCT/JP2004/007455

Publication Date:

December 09, 2004

Filing Date:

May 25, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KONICA MINOLTA OPTO INC (JP)
MATSUI TAKUMI (JP)
SANO EIGO (JP)

International Classes:

G02B9/34; G02B13/00; G02B13/18; (IPC1-7): G02B13/00; G02B13/18

Foreign References:

JPH05188293A	1993-07-30
JPH1184234A	1999-03-26
JP2002365530A	2002-12-18
JP2002162561A	2002-06-07
JP2003149545A	2003-05-21
JP2003149548A	2003-05-21
JP2002517773A	2002-06-18

Other References: