TW200714918A - Aspherical imaging lens array - Google Patents

Aspherical imaging lens array

Info

Publication number
TW200714918A
TW200714918A TW094135256A TW94135256A TW200714918A TW 200714918 A TW200714918 A TW 200714918A TW 094135256 A TW094135256 A TW 094135256A TW 94135256 A TW94135256 A TW 94135256A TW 200714918 A TW200714918 A TW 200714918A
Authority
TW
Taiwan
Prior art keywords
lens
faces
object side
convex surface
convex
Prior art date
Application number
TW094135256A
Other languages
Chinese (zh)
Other versions
TWI271540B (en
Inventor
Sayuri Noda
Original Assignee
Largan Precision Co Ltd
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 Largan Precision Co Ltd filed Critical Largan Precision Co Ltd
Priority to TW94135256A priority Critical patent/TWI271540B/en
Application granted granted Critical
Publication of TWI271540B publication Critical patent/TWI271540B/en
Publication of TW200714918A publication Critical patent/TW200714918A/en

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  • Lenses (AREA)

Abstract

The present invention relates to an aspherical imaging lens array which from the object side to the imaging side is comprised with an aperture, a first lens, a second lens and a third lens orderly in turns. The first lens is a positive convex-concave lens. The second lens and the third lens are convex-concave lenses. The convex surface of the first lens faces to the object side, while the convex surface of second lens faces to the imaging side. The convex surface of the third lens faces to the object side. The first lens, second lens and third lens of the present invention are all made by aspherical plastic lens and the focal length of the whole optical system is f, the focal length of the second and third lenses are f2 and f3. Under the condition, it need to be fit in with -0.20< f/f2 <0.15 and -0.25< f/f3<0.20, therefore could constrict (T/f) and the lens of miniaturized will be come true and can retain well-telecentric performance.
TW94135256A 2005-10-07 2005-10-07 Aspherical imaging lens array TWI271540B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94135256A TWI271540B (en) 2005-10-07 2005-10-07 Aspherical imaging lens array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94135256A TWI271540B (en) 2005-10-07 2005-10-07 Aspherical imaging lens array

Publications (2)

Publication Number Publication Date
TWI271540B TWI271540B (en) 2007-01-21
TW200714918A true TW200714918A (en) 2007-04-16

Family

ID=38435230

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94135256A TWI271540B (en) 2005-10-07 2005-10-07 Aspherical imaging lens array

Country Status (1)

Country Link
TW (1) TWI271540B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI748452B (en) * 2020-01-21 2021-12-01 鴻海精密工業股份有限公司 Low-profile imaging lens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424189B (en) * 2009-09-15 2014-01-21 Largan Precision Co Ltd Imaging lens assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI748452B (en) * 2020-01-21 2021-12-01 鴻海精密工業股份有限公司 Low-profile imaging lens

Also Published As

Publication number Publication date
TWI271540B (en) 2007-01-21

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Legal Events

Date Code Title Description
MK4A Expiration of patent term of an invention patent