JPS5242724A - Soft focus lens system - Google Patents

Soft focus lens system

Info

Publication number
JPS5242724A
JPS5242724A JP11913775A JP11913775A JPS5242724A JP S5242724 A JPS5242724 A JP S5242724A JP 11913775 A JP11913775 A JP 11913775A JP 11913775 A JP11913775 A JP 11913775A JP S5242724 A JPS5242724 A JP S5242724A
Authority
JP
Japan
Prior art keywords
soft focus
lens system
focus lens
spherical aberration
order
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.)
Pending
Application number
JP11913775A
Other languages
Japanese (ja)
Inventor
Hideo Yokota
Akira Tajima
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 JP11913775A priority Critical patent/JPS5242724A/en
Publication of JPS5242724A publication Critical patent/JPS5242724A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/20—Soft-focus objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

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

Abstract

PURPOSE:To obtain a good soft focus effect by correcting a spherical aberration region of 3rd order by the use of an aspherical face, and by enlarging a residual quantity of a spherical aberration of a high order.
JP11913775A 1975-10-01 1975-10-01 Soft focus lens system Pending JPS5242724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11913775A JPS5242724A (en) 1975-10-01 1975-10-01 Soft focus lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11913775A JPS5242724A (en) 1975-10-01 1975-10-01 Soft focus lens system

Publications (1)

Publication Number Publication Date
JPS5242724A true JPS5242724A (en) 1977-04-02

Family

ID=14753840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11913775A Pending JPS5242724A (en) 1975-10-01 1975-10-01 Soft focus lens system

Country Status (1)

Country Link
JP (1) JPS5242724A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803996A (en) * 1953-04-06 1957-08-27 Optische Ind De Oude Delft Nv Objective lens system provided with an aspherical correcting plate
JPS50142231A (en) * 1974-05-04 1975-11-15
JPS5545362U (en) * 1978-09-20 1980-03-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803996A (en) * 1953-04-06 1957-08-27 Optische Ind De Oude Delft Nv Objective lens system provided with an aspherical correcting plate
JPS50142231A (en) * 1974-05-04 1975-11-15
JPS5545362U (en) * 1978-09-20 1980-03-25

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