JPH01108511U - - Google Patents

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Publication number
JPH01108511U
JPH01108511U JP301988U JP301988U JPH01108511U JP H01108511 U JPH01108511 U JP H01108511U JP 301988 U JP301988 U JP 301988U JP 301988 U JP301988 U JP 301988U JP H01108511 U JPH01108511 U JP H01108511U
Authority
JP
Japan
Prior art keywords
filter
holder
density distribution
central axis
variable light
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
JP301988U
Other languages
English (en)
Other versions
JPH0531617Y2 (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 JP301988U priority Critical patent/JPH0531617Y2/ja
Publication of JPH01108511U publication Critical patent/JPH01108511U/ja
Application granted granted Critical
Publication of JPH0531617Y2 publication Critical patent/JPH0531617Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図a,bは本考案の一実施例を示す正面図
、および側面図、第2図は第1図a,bに示す可
変光量NDフイルタのフイルタの構造を示す説明
図、第3図は第1図a,bに示す可変光量NDフ
イルタのフイルタ部分の動作説明図、第4図a,
bは従来の第1の例を示す側面図、および正面図
、第5図a,bは従来の第2の例を示す側面図、
および正面図、第6図はフイルタの透過率を示す
平面図、第7図a〜cは可変光量NDフイルタの
動作説明図である。 1…NDフイルタ、2…光、3…ホルダ、4…
NDフイルタ、5…ピニオン、6…NDフイルタ
、7…NDフイルタ、8…ラツク、9…ラツク。

Claims (1)

    【実用新案登録請求の範囲】
  1. ホルダーと、前記ホルダーに1回転自由度をも
    つてつながり、円筒形でその円筒の中心軸が回転
    軸であり、円周方向片側半分の濃度が円周方向に
    直線的に変化し一定の勾配をもち、反対側半分の
    濃度分布が前記片側半分の濃度分布と中心軸に関
    して対称であるNDフイルタとを含むことを特徴
    とする可変光量NDフイルタ。
JP301988U 1988-01-12 1988-01-12 Expired - Lifetime JPH0531617Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP301988U JPH0531617Y2 (ja) 1988-01-12 1988-01-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP301988U JPH0531617Y2 (ja) 1988-01-12 1988-01-12

Publications (2)

Publication Number Publication Date
JPH01108511U true JPH01108511U (ja) 1989-07-21
JPH0531617Y2 JPH0531617Y2 (ja) 1993-08-13

Family

ID=31204286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP301988U Expired - Lifetime JPH0531617Y2 (ja) 1988-01-12 1988-01-12

Country Status (1)

Country Link
JP (1) JPH0531617Y2 (ja)

Also Published As

Publication number Publication date
JPH0531617Y2 (ja) 1993-08-13

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