JPS5835267U - variable lens aperture - Google Patents

variable lens aperture

Info

Publication number
JPS5835267U
JPS5835267U JP13004581U JP13004581U JPS5835267U JP S5835267 U JPS5835267 U JP S5835267U JP 13004581 U JP13004581 U JP 13004581U JP 13004581 U JP13004581 U JP 13004581U JP S5835267 U JPS5835267 U JP S5835267U
Authority
JP
Japan
Prior art keywords
variable lens
lens aperture
aperture
variable
recorded
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
JP13004581U
Other languages
Japanese (ja)
Inventor
片山　幸昭
Original Assignee
株式会社島津製作所
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 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to JP13004581U priority Critical patent/JPS5835267U/en
Publication of JPS5835267U publication Critical patent/JPS5835267U/en
Pending legal-status Critical Current

Links

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】[Brief explanation of the drawing]

第１図は本考案の一実施例の側面略図、第２図は同じく
縦断側面図、第３図は本考案におけるビーム径と実質絞
り径及び対物レンズ絞り間距離の関係を示すグラフであ
る。 １・・・電子源、２・・・コンデンサレンズ、３・・・
対物レンズ、４・・・試料、５・・・絞り。FIG. 1 is a schematic side view of an embodiment of the present invention, FIG. 2 is a longitudinal side view, and FIG. 3 is a graph showing the relationship between the beam diameter, the substantial aperture diameter, and the distance between objective lens apertures in the present invention. 1... Electron source, 2... Condenser lens, 3...
Objective lens, 4...sample, 5...aperture.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 絞りをレンズ系の光軸方向に移動可能にした可変レンズ
絞り。A variable lens aperture that allows the aperture to move in the direction of the optical axis of the lens system.
JP13004581U 1981-08-31 1981-08-31 variable lens aperture Pending JPS5835267U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13004581U JPS5835267U (en) 1981-08-31 1981-08-31 variable lens aperture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13004581U JPS5835267U (en) 1981-08-31 1981-08-31 variable lens aperture

Publications (1)

Publication Number Publication Date
JPS5835267U true JPS5835267U (en) 1983-03-08

Family

ID=29923698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13004581U Pending JPS5835267U (en) 1981-08-31 1981-08-31 variable lens aperture

Country Status (1)

Country Link
JP (1) JPS5835267U (en)

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