TW253045B - A lens system for reading image - Google Patents

A lens system for reading image

Info

Publication number
TW253045B
TW253045B TW83101551A TW83101551A TW253045B TW 253045 B TW253045 B TW 253045B TW 83101551 A TW83101551 A TW 83101551A TW 83101551 A TW83101551 A TW 83101551A TW 253045 B TW253045 B TW 253045B
Authority
TW
Taiwan
Prior art keywords
image
lens
lens system
reading
aspherical surface
Prior art date
Application number
TW83101551A
Other languages
Chinese (zh)
Inventor
Kazuo Kikutani
Original Assignee
Mark Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mark Kk filed Critical Mark Kk
Application granted granted Critical
Publication of TW253045B publication Critical patent/TW253045B/en

Links

Landscapes

  • Lenses (AREA)

Abstract

A lens system used for reading an image, the system being constructed of two lenses and presents sufficient performance for reading an image in an image scanner, a facsimile, etc. The system is constructed of a positive meniscus image-forming lens and a positive meniscus auxiliary lens. The convexes of both lenses face an object. The image-forming lens has at least one aspherical surface or it has an aspherical surface formed by joining an aspherical surface layer formed of a transparent material to the surface of a spherical glass lens. Both surfaces of the auxiliary lens are aspherical.
TW83101551A 1993-01-29 1994-02-23 A lens system for reading image TW253045B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3254893A JP2592033B2 (en) 1993-01-29 1993-01-29 Reading lens

Publications (1)

Publication Number Publication Date
TW253045B true TW253045B (en) 1995-08-01

Family

ID=12361991

Family Applications (1)

Application Number Title Priority Date Filing Date
TW83101551A TW253045B (en) 1993-01-29 1994-02-23 A lens system for reading image

Country Status (2)

Country Link
JP (1) JP2592033B2 (en)
TW (1) TW253045B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004302064A (en) * 2003-03-31 2004-10-28 Fuji Photo Optical Co Ltd Laser array imaging lens and image forming apparatus
WO2005026804A1 (en) * 2003-09-09 2005-03-24 Seiko Precision Inc. Photographing lens and imaging device using the photographing lens
TWI438471B (en) 2011-08-24 2014-05-21 Largan Precision Co Ltd Optical image capturing lenses
WO2015093444A1 (en) * 2013-12-16 2015-06-25 コニカミノルタ株式会社 Imaging lens and imaging device
TWI541539B (en) 2014-12-30 2016-07-11 大立光電股份有限公司 Imaging optical lens assembly, imaging apparatus and electronic device
TWI588526B (en) 2016-01-22 2017-06-21 大立光電股份有限公司 Optical imaging lens assembly, image capturing unit and electronic device
TWI626488B (en) 2017-03-28 2018-06-11 大立光電股份有限公司 Photographing optical lens assembly, image capturing unit and electronic device

Also Published As

Publication number Publication date
JP2592033B2 (en) 1997-03-19
JPH06230277A (en) 1994-08-19

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