JPS5851506U

JPS5851506U - Optical system with large diffusion angle

Info

Publication number: JPS5851506U
Application number: JP14674081U
Authority: JP
Inventors: 岩本　英雄
Original assignee: 日本光機工業株式会社
Priority date: 1981-10-03
Filing date: 1981-10-03
Publication date: 1983-04-07

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

[Brief explanation of the drawing]

第１図及び第２図は従来の光学系の各別の例の側面略図
、第３図は本考案にかかる光学系の具体例を示す側面略
図である。Ａ・・・第１のレンズ、Ｃ・・・中心、０・・・焦点、
Ｂ・・・第２のレンズ、ｒ・・・半径、Ｌ・・・光源、
ｋｒ・・・半径、Ｌ′・・・光源。補正　昭５７．２．８実用新案登録請求の範囲を次のように補正する。Ｏ実用新案登録請求の範囲第１の投光レンズの主点とこの一レンズ焦点の間に第２
のレンズを配置し、光源を、第１のレンズの焦点から第
２のレンズ側でかつこの光源の第２のレンズによる拡大
虚像が第１のレンズの焦点に生じしかも第２のレンズよ
り発する光が全て第１、　のレンズに入る位置に、配置
した大きな拡散角をもつ光学系。図面の簡単な説明を次のように補正する。明細書第７頁第１０行の「中心」を「主点」と補正する
。1 and 2 are schematic side views of different examples of conventional optical systems, and FIG. 3 is a schematic side view of a specific example of the optical system according to the present invention. A: first lens, C: center, 0: focal point,
B...second lens, r...radius, L...light source,
kr...Radius, L'...Light source. Amendment February 8, 1982 The scope of claims for utility model registration is amended as follows. O Utility Model Registration Claims Between the principal point of the first projection lens and the focal point of this one lens, there is a second projection lens.
a light source is placed on the second lens side from the focal point of the first lens, and an enlarged virtual image of the light source by the second lens is generated at the focal point of the first lens, and the light emitted from the second lens is An optical system with a large diffusion angle placed where all of the elements enter the first lens. The brief description of the drawing has been amended as follows. "Center" on page 7, line 10 of the specification is corrected to "principal point."

Claims

[Scope of utility model registration request]

A second lens is placed between the center of the first projecting lens and the focal point of this lens.
A light source is placed on the second lens side from the focal point of the first lens, and an enlarged virtual image of the light source by the second lens is generated at the first lens focal point, and the light emitted from the second lens is An optical system with a large diffusion angle placed all at the position where it enters the first lens.