JPS6432531U - - Google Patents

Info

Publication number
JPS6432531U
JPS6432531U JP12788187U JP12788187U JPS6432531U JP S6432531 U JPS6432531 U JP S6432531U JP 12788187 U JP12788187 U JP 12788187U JP 12788187 U JP12788187 U JP 12788187U JP S6432531 U JPS6432531 U JP S6432531U
Authority
JP
Japan
Prior art keywords
lens part
objective lens
optical axis
waist level
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.)
Pending
Application number
JP12788187U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP12788187U priority Critical patent/JPS6432531U/ja
Priority to US07/180,451 priority patent/US4957356A/en
Publication of JPS6432531U publication Critical patent/JPS6432531U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の基本構成を示す側面図、第2
図はその後面図、第3図は本考案の実施例を示す
図。 1は負のレンズ又はレンズ群、2は正のレンズ
又はレンズ群、3はダハプリズム、3A,3Bは
ダハ面、3Cはピント面、4はフイールドレンズ
、5はフレネル板。
Figure 1 is a side view showing the basic configuration of the present invention, Figure 2 is a side view showing the basic configuration of the invention.
The figure is a rear view, and FIG. 3 is a diagram showing an embodiment of the present invention. 1 is a negative lens or lens group, 2 is a positive lens or lens group, 3 is a roof prism, 3A and 3B are roof surfaces, 3C is a focusing surface, 4 is a field lens, and 5 is a Fresnel plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 負レンズ部と正レンズ部で構成される対物レン
ズと、その光軸上後方に配置され対物レンズ光軸
を折曲させるダハ面で形成される反射面とをもつ
た光学素子とを有するウエストレベルフアインダ
ーであつて、前記負レンズ部と正レンズ部の空気
間隔を減少させることにより、広角から望遠へ視
野範囲を変化させる事を特徴とする変倍ウエスト
レベルフアインダー。
A waist level optical element having an objective lens composed of a negative lens part and a positive lens part, and a reflective surface formed by a roof surface disposed rearward on the optical axis of the objective lens and bending the optical axis of the objective lens. A variable power waist level finder, characterized in that the viewing range is changed from wide-angle to telephoto by reducing the air gap between the negative lens part and the positive lens part.
JP12788187U 1987-04-20 1987-08-21 Pending JPS6432531U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12788187U JPS6432531U (en) 1987-08-21 1987-08-21
US07/180,451 US4957356A (en) 1987-04-20 1988-04-12 Finder device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12788187U JPS6432531U (en) 1987-08-21 1987-08-21

Publications (1)

Publication Number Publication Date
JPS6432531U true JPS6432531U (en) 1989-03-01

Family

ID=31380708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12788187U Pending JPS6432531U (en) 1987-04-20 1987-08-21

Country Status (1)

Country Link
JP (1) JPS6432531U (en)

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