JPS5559418A - Tessar-type lens - Google Patents
Tessar-type lensInfo
- 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
Links
Landscapes
- Lenses (AREA)
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
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)
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 |
-
1978
- 1978-10-27 JP JP13240878A patent/JPS5559418A/en active Granted
Cited By (11)
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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