JPS56133708A - Tessar type lens - Google Patents

Tessar type lens

Info

Publication number
JPS56133708A
JPS56133708A JP3783880A JP3783880A JPS56133708A JP S56133708 A JPS56133708 A JP S56133708A JP 3783880 A JP3783880 A JP 3783880A JP 3783880 A JP3783880 A JP 3783880A JP S56133708 A JPS56133708 A JP S56133708A
Authority
JP
Japan
Prior art keywords
lens
constitution
meniscus
combined
positive lens
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
JP3783880A
Other languages
Japanese (ja)
Other versions
JPS6128966B2 (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 JP3783880A priority Critical patent/JPS56133708A/en
Publication of JPS56133708A publication Critical patent/JPS56133708A/en
Publication of JPS6128966B2 publication Critical patent/JPS6128966B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
    • G02B9/14—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - +
    • G02B9/18—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - + only one component having a compound lens
    • G02B9/20—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - + only one component having a compound lens the rear component having the compound

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To achieve miniaturization and improve aberration correction by satisfying specific specifications with the constitution consisting of a meniscus positive lens directing its convex to the object, a biconcave lens, and a combined positive lens of a biconvex lens and a meniscus negative lens, successively from the object side. CONSTITUTION:A Tessar type lens of a rear stop is made into the constitution in which a meniscus positive lens I directing its convex to the object, a biconcave lens II and a combined positive lens of a biconvex lens III and a meniscus negative lens IV are disposed successively from the object side and a stop is disposed behind said combined lens, wherein the various specifications of the respective lenses of the radius (r) of lens faces when a focal length f=1, the axial thickness or air space (d) of lenses, the refractive index Nd for (d) rays, and Abbe number nud are so constituted as to satisfy the numerical values shown in the table, whereby the spherical aberration, astigmatism, distortion and coma aberration for infinite objects are well corrected.
JP3783880A 1980-03-25 1980-03-25 Tessar type lens Granted JPS56133708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3783880A JPS56133708A (en) 1980-03-25 1980-03-25 Tessar type lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3783880A JPS56133708A (en) 1980-03-25 1980-03-25 Tessar type lens

Publications (2)

Publication Number Publication Date
JPS56133708A true JPS56133708A (en) 1981-10-20
JPS6128966B2 JPS6128966B2 (en) 1986-07-03

Family

ID=12508664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3783880A Granted JPS56133708A (en) 1980-03-25 1980-03-25 Tessar type lens

Country Status (1)

Country Link
JP (1) JPS56133708A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6325611A (en) * 1986-07-17 1988-02-03 Asahi Optical Co Ltd Reading lens
JPH0497326A (en) * 1990-08-14 1992-03-30 Canon Inc Photographing device provided with trimming photographing mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6325611A (en) * 1986-07-17 1988-02-03 Asahi Optical Co Ltd Reading lens
JPH0497326A (en) * 1990-08-14 1992-03-30 Canon Inc Photographing device provided with trimming photographing mechanism

Also Published As

Publication number Publication date
JPS6128966B2 (en) 1986-07-03

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