JPS5934920Y2 - プラネタリウムにおける光輝星投影筒の光量調節装置 - Google Patents

プラネタリウムにおける光輝星投影筒の光量調節装置

Info

Publication number
JPS5934920Y2
JPS5934920Y2 JP1981081117U JP8111781U JPS5934920Y2 JP S5934920 Y2 JPS5934920 Y2 JP S5934920Y2 JP 1981081117 U JP1981081117 U JP 1981081117U JP 8111781 U JP8111781 U JP 8111781U JP S5934920 Y2 JPS5934920 Y2 JP S5934920Y2
Authority
JP
Japan
Prior art keywords
light amount
screw
hole
light
lens barrel
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.)
Expired
Application number
JP1981081117U
Other languages
English (en)
Japanese (ja)
Other versions
JPS57195169U (enrdf_load_stackoverflow
Inventor
正一 荒屋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goto Optical Manufacturing Co Ltd
Original Assignee
Goto Optical Manufacturing Co Ltd
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 Goto Optical Manufacturing Co Ltd filed Critical Goto Optical Manufacturing Co Ltd
Priority to JP1981081117U priority Critical patent/JPS5934920Y2/ja
Publication of JPS57195169U publication Critical patent/JPS57195169U/ja
Application granted granted Critical
Publication of JPS5934920Y2 publication Critical patent/JPS5934920Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Instructional Devices (AREA)
JP1981081117U 1981-06-03 1981-06-03 プラネタリウムにおける光輝星投影筒の光量調節装置 Expired JPS5934920Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981081117U JPS5934920Y2 (ja) 1981-06-03 1981-06-03 プラネタリウムにおける光輝星投影筒の光量調節装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981081117U JPS5934920Y2 (ja) 1981-06-03 1981-06-03 プラネタリウムにおける光輝星投影筒の光量調節装置

Publications (2)

Publication Number Publication Date
JPS57195169U JPS57195169U (enrdf_load_stackoverflow) 1982-12-10
JPS5934920Y2 true JPS5934920Y2 (ja) 1984-09-27

Family

ID=29876644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981081117U Expired JPS5934920Y2 (ja) 1981-06-03 1981-06-03 プラネタリウムにおける光輝星投影筒の光量調節装置

Country Status (1)

Country Link
JP (1) JPS5934920Y2 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2919287B2 (ja) * 1994-12-19 1999-07-12 株式会社五藤光学研究所 ドーム型スクリーンにおける画像投映方法
JP2005266037A (ja) * 2004-03-17 2005-09-29 Konica Minolta Planetarium Co Ltd 星像投映機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507851A (enrdf_load_stackoverflow) * 1973-05-24 1975-01-27
JPS5952657B2 (ja) * 1977-09-08 1984-12-20 旭化成株式会社 エポキシ樹脂組成物
JPS54127958A (en) * 1978-03-29 1979-10-04 Nippon Porimaa Kk Dowdered * emulsion type of epoxy resin blend
JPS5616565A (en) * 1979-07-19 1981-02-17 Mitsubishi Electric Corp Priming powder coating material

Also Published As

Publication number Publication date
JPS57195169U (enrdf_load_stackoverflow) 1982-12-10

Similar Documents

Publication Publication Date Title
EP0805995B1 (en) Collection system for a projector
JPH03100537A (ja) 映写用の照明装置
JP3117565B2 (ja) 光束計
JPS5934920Y2 (ja) プラネタリウムにおける光輝星投影筒の光量調節装置
US5608580A (en) Rotary-prism refracting device for optical equipment, such as a light projector
US20060023174A1 (en) Projector apparatus having an aperture-controllable diaphragm
US3851165A (en) Directional signal beacon
US4171882A (en) Light reflective projection system
CA2290686A1 (en) Contrast improvement in liquid crystal light valve projectors
US4080052A (en) Overhead projection system with lens assembly having concentrically-oriented condensing lenses
US3693000A (en) Light projectors
JPS60225875A (ja) 可変水平線シヤツタ−を有するプラネタリウム
JP3229677B2 (ja) 照明光学システム
JPS604204Y2 (ja) プラネタリウムの投影機
JPS61140917A (ja) 光量調節方法とその装置
JP2501676Y2 (ja) 光源装置
CN112879828B (zh) 一种投射三维异形光斑的激光灯具
JPH0517799Y2 (enrdf_load_stackoverflow)
JPH0228151B2 (ja) Puranetariumu
JPH0740070B2 (ja) Ｌｅｄ式赤外線投光器
JPS5934919Y2 (ja) 日の出及び日没時に於ける赤色効果を現示する太陽投影装置
JP2579547Y2 (ja) プラネタリウムにおける朝焼け夕焼け投影装置
JPH0525121Y2 (enrdf_load_stackoverflow)
JPH0430723Y2 (enrdf_load_stackoverflow)
JPS635127Y2 (enrdf_load_stackoverflow)