JPS5559418A - Tessar-type lens - Google Patents

Tessar-type lens

Info

Publication number
JPS5559418A
JPS5559418A JP13240878A JP13240878A JPS5559418A JP S5559418 A JPS5559418 A JP S5559418A JP 13240878 A JP13240878 A JP 13240878A JP 13240878 A JP13240878 A JP 13240878A JP S5559418 A JPS5559418 A JP S5559418A
Authority
JP
Japan
Prior art keywords
lens
abbe number
tessar
corrected
subsequent
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP13240878A
Other languages
Japanese (ja)
Other versions
JPS6125126B2 (en
Inventor
Hideo Yokota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP13240878A priority Critical patent/JPS5559418A/en
Publication of JPS5559418A publication Critical patent/JPS5559418A/en
Publication of JPS6125126B2 publication Critical patent/JPS6125126B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To well correct chromatic aberrations, miniaturize the entire part of the camera and simplify the lens-barrel construction by using the glass material of Abbe number 8 or larger for the 1st lens of the Tessar-type lens.
CONSTITUTION: When ri is let subsequent radii of curvature, di subsequent lens thicknesses or inter-face spacings, N4 the refractive index of biconvex lens, ν1 the Abbe number of meniscus positive lens, ν2 the Abbe number of biconcave lens and f the focal length, then condition formulas (1) thru (12) are satisfied. The entire length is made short and spherical aberrations are corrected by (1). The problems of astigmatism and sagital image surface curvature of field are solved by (2). Coma flare is corrected by (3).
COPYRIGHT: (C)1980,JPO&Japio
JP13240878A 1978-10-27 1978-10-27 Tessar-type lens Granted JPS5559418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13240878A JPS5559418A (en) 1978-10-27 1978-10-27 Tessar-type lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13240878A JPS5559418A (en) 1978-10-27 1978-10-27 Tessar-type lens

Publications (2)

Publication Number Publication Date
JPS5559418A true JPS5559418A (en) 1980-05-02
JPS6125126B2 JPS6125126B2 (en) 1986-06-14

Family

ID=15080681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13240878A Granted JPS5559418A (en) 1978-10-27 1978-10-27 Tessar-type lens

Country Status (1)

Country Link
JP (1) JPS5559418A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918916A (en) * 1982-07-23 1984-01-31 Canon Inc Tessar type photographic lens
US4487484A (en) * 1982-09-16 1984-12-11 Olympus Optical Co., Ltd. Behind-stop Tesser type lens system
US7742383B2 (en) 2006-11-08 2010-06-22 Hitachi Maxell, Ltd. Optical pickup lens

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918916A (en) * 1982-07-23 1984-01-31 Canon Inc Tessar type photographic lens
JPH0415923B2 (en) * 1982-07-23 1992-03-19 Canon Kk
US4487484A (en) * 1982-09-16 1984-12-11 Olympus Optical Co., Ltd. Behind-stop Tesser type lens system
US7742383B2 (en) 2006-11-08 2010-06-22 Hitachi Maxell, Ltd. Optical pickup lens
US7830774B2 (en) 2006-11-08 2010-11-09 Hitachi Maxell, Ltd. Optical pickup lens
US7859978B2 (en) 2006-11-08 2010-12-28 Hitachi Maxell, Ltd. Optical pickup lens
US8116189B2 (en) 2006-11-08 2012-02-14 Hitachi Maxell, Ltd. Optical pickup lens
US8184521B2 (en) 2006-11-08 2012-05-22 Hitachi Maxell, Ltd. Optical pickup lens
US8270282B2 (en) 2006-11-08 2012-09-18 Hitachi Maxell, Ltd. Optical pickup lens
US8274876B2 (en) 2006-11-08 2012-09-25 Hitachi Maxell, Ltd. Optical pickup lens
US8427926B2 (en) 2006-11-08 2013-04-23 Hitachi Maxwell, Ltd. Optical pickup lens

Also Published As

Publication number Publication date
JPS6125126B2 (en) 1986-06-14

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