JPS6390281U - - Google Patents

Info

Publication number
JPS6390281U
JPS6390281U JP18514886U JP18514886U JPS6390281U JP S6390281 U JPS6390281 U JP S6390281U JP 18514886 U JP18514886 U JP 18514886U JP 18514886 U JP18514886 U JP 18514886U JP S6390281 U JPS6390281 U JP S6390281U
Authority
JP
Japan
Prior art keywords
light
shielding film
projection
glass substrate
planetarium
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
JP18514886U
Other languages
English (en)
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 JP18514886U priority Critical patent/JPS6390281U/ja
Publication of JPS6390281U publication Critical patent/JPS6390281U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Instructional Devices (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す断面図、第２
図は加工状態を示す断面図、第３図は投影孔をレ
ーザ加工するときの孔径とレーザ出力との関係を
示すグラフ、第４図は投影孔をレーザ加工すると
きの孔径とデフオーカス量との関係を示すグラフ
である。 １……ガラス基板、２……遮光膜、３……投影
孔。

Claims (1)

    【実用新案登録請求の範囲】
  1. レーザ光透過性のガラス基板上にニツケルより
    なる遮光膜を形成し、この遮光膜に投影孔をレー
    ザ加工により形成したことを特徴とするプラネタ
    リウム用の恒星投影原板。
JP18514886U 1986-12-01 1986-12-01 Pending JPS6390281U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18514886U JPS6390281U (ja) 1986-12-01 1986-12-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18514886U JPS6390281U (ja) 1986-12-01 1986-12-01

Publications (1)

Publication Number Publication Date
JPS6390281U true JPS6390281U (ja) 1988-06-11

Family

ID=31133500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18514886U Pending JPS6390281U (ja) 1986-12-01 1986-12-01

Country Status (1)

Country Link
JP (1) JPS6390281U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09197957A (ja) * 1996-01-17 1997-07-31 Goto Kogaku Kenkyusho:Kk プラネタリウムにおける星雲又は星団の投映方法及びそれに使用する投映原板の作成方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940652A (ja) * 1972-08-23 1974-04-16
JPS55140290A (en) * 1979-04-20 1980-11-01 Hitachi Ltd Method of machining thin film laser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940652A (ja) * 1972-08-23 1974-04-16
JPS55140290A (en) * 1979-04-20 1980-11-01 Hitachi Ltd Method of machining thin film laser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09197957A (ja) * 1996-01-17 1997-07-31 Goto Kogaku Kenkyusho:Kk プラネタリウムにおける星雲又は星団の投映方法及びそれに使用する投映原板の作成方法

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