JPS599332U - Overhead projector using variable focus lens - Google Patents

Overhead projector using variable focus lens

Info

Publication number
JPS599332U
JPS599332U JP10549682U JP10549682U JPS599332U JP S599332 U JPS599332 U JP S599332U JP 10549682 U JP10549682 U JP 10549682U JP 10549682 U JP10549682 U JP 10549682U JP S599332 U JPS599332 U JP S599332U
Authority
JP
Japan
Prior art keywords
variable focus
focus lens
overhead projector
lens
projection
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
JP10549682U
Other languages
Japanese (ja)
Inventor
石井　豊夫
Original Assignee
株式会社学習研究社
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 株式会社学習研究社 filed Critical 株式会社学習研究社
Priority to JP10549682U priority Critical patent/JPS599332U/en
Publication of JPS599332U publication Critical patent/JPS599332U/en
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Lens Barrels (AREA)

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]

図面は本考案の実施の一例を示すものであり、第１図は
ＯＨＰの作用を示す概略図、第２図は可変焦点圧着しン
ズの断面図である。 尚、図面中１はＯＨＰ本体、２は光源、５はステージ、
６は被投影物、９は投影レンズ、１９は可変焦点距離レ
ンズである。The drawings show an example of the implementation of the present invention, and FIG. 1 is a schematic diagram showing the operation of an OHP, and FIG. 2 is a sectional view of a variable focus crimp lens. In addition, in the drawing, 1 is the OHP main body, 2 is the light source, 5 is the stage,
6 is an object to be projected, 9 is a projection lens, and 19 is a variable focal length lens.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ステージ上に載置した被投影物に光源からの光を照射し
、この被投影物からの光を投影レンズを介してスクリー
ンに投影するようにしたオーバーヘッドプロジェクタ−
において、前記ステージと映写レンズとの距離を固定す
るとともに、映写レンズには可変焦点レンズを用いたこ
とを特徴とする可変焦点レンズを用いたオーバーへラド
プロジェクタ−。An overhead projector that irradiates a projection object placed on a stage with light from a light source and projects the light from the projection object onto a screen via a projection lens.
2. An overherad projector using a variable focus lens, characterized in that the distance between the stage and the projection lens is fixed, and a variable focus lens is used as the projection lens.
JP10549682U 1982-07-12 1982-07-12 Overhead projector using variable focus lens Pending JPS599332U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10549682U JPS599332U (en) 1982-07-12 1982-07-12 Overhead projector using variable focus lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10549682U JPS599332U (en) 1982-07-12 1982-07-12 Overhead projector using variable focus lens

Publications (1)

Publication Number Publication Date
JPS599332U true JPS599332U (en) 1984-01-21

Family

ID=30247253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10549682U Pending JPS599332U (en) 1982-07-12 1982-07-12 Overhead projector using variable focus lens

Country Status (1)

Country Link
JP (1) JPS599332U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890525A (en) * 1972-03-01 1973-11-26
JPS50133832A (en) * 1974-04-09 1975-10-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890525A (en) * 1972-03-01 1973-11-26
JPS50133832A (en) * 1974-04-09 1975-10-23

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