JPS6136826U - Shooting optical system - Google Patents

Shooting optical system

Info

Publication number
JPS6136826U
JPS6136826U JP12183084U JP12183084U JPS6136826U JP S6136826 U JPS6136826 U JP S6136826U JP 12183084 U JP12183084 U JP 12183084U JP 12183084 U JP12183084 U JP 12183084U JP S6136826 U JPS6136826 U JP S6136826U
Authority
JP
Japan
Prior art keywords
optical system
shooting optical
optical member
light
diaphragm
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
JP12183084U
Other languages
Japanese (ja)
Inventor
定彦 辻
Original Assignee
キヤノン株式会社
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 キヤノン株式会社 filed Critical キヤノン株式会社
Priority to JP12183084U priority Critical patent/JPS6136826U/en
Publication of JPS6136826U publication Critical patent/JPS6136826U/en
Pending legal-status Critical Current

Links

Landscapes

  • Diaphragms For Cameras (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】 第１図は本考案の一実施例を示す光学断面図である。 図中、１は撮影レンズ前群、２は後群、３は絞り、４は
撮像管、７はフォトクロミック材料の平行平面板である
。 へBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an optical sectional view showing an embodiment of the present invention. In the figure, 1 is a front group of a photographing lens, 2 is a rear group, 3 is an aperture stop, 4 is an imaging tube, and 7 is a parallel plane plate made of photochromic material. fart

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被写界の明るさに応じて絞り径の制御される絞りの像側
に、フォトクロミツク材料よりなる光学部材を配置し、
絞りと光学部材による光減衰作用とが共同して光量を調
整することを特徴とする撮影光学系。An optical member made of a photochromic material is placed on the image side of the aperture whose diameter is controlled according to the brightness of the subject.
A photographic optical system characterized in that a diaphragm and a light attenuation effect by an optical member work together to adjust the amount of light.
JP12183084U 1984-08-08 1984-08-08 Shooting optical system Pending JPS6136826U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12183084U JPS6136826U (en) 1984-08-08 1984-08-08 Shooting optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12183084U JPS6136826U (en) 1984-08-08 1984-08-08 Shooting optical system

Publications (1)

Publication Number Publication Date
JPS6136826U true JPS6136826U (en) 1986-03-07

Family

ID=30680607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12183084U Pending JPS6136826U (en) 1984-08-08 1984-08-08 Shooting optical system

Country Status (1)

Country Link
JP (1) JPS6136826U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213728B1 (en) * 1971-07-05 1977-04-16
JPS5570174A (en) * 1978-11-21 1980-05-27 Nec Corp Pickup device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213728B1 (en) * 1971-07-05 1977-04-16
JPS5570174A (en) * 1978-11-21 1980-05-27 Nec Corp Pickup device

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