JPS591031U

JPS591031U - Optical image frame daylighting type reverse Galileo viewfinder

Info

Publication number: JPS591031U
Application number: JP9494382U
Authority: JP
Inventors: 三上　宣尚
Original assignee: 株式会社リコー
Priority date: 1982-06-24
Filing date: 1982-06-24
Publication date: 1984-01-06

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図は従来の光像枠採光式逆ガリレオファインダの例
を示す光学系図、第２図は本考案の一実施例を示す光学
系図、第３図は本考案の他の実施例を示す光学系図、第
４図は本考案に用いられるターゲツト板の例を示す正面
図、第５図は本考案によるファインダ視野の例を示す正
面図である。８・・・対物レン女、ｆｉａ、　　９ｂ・・・拡散板、
９・・・プリズム、９ａ、　　９ｂ・・・ターゲットレ
ンズ面、９ｃ。９ｄ・・・ターゲット反射面、９ｇ＝・・接眼レンズ面
、１０・・・プリズム、１１・・・ターゲツト板、１１
ａ。１１ｂ・・・光像枠、１１ｃ・・・マスク。Fig. 1 is an optical system diagram showing an example of a conventional inverted Galilean finder with optical image frame lighting, Fig. 2 is an optical system diagram showing one embodiment of the present invention, and Fig. 3 is an optical system diagram showing another embodiment of the present invention. FIG. 4 is a front view showing an example of the target plate used in the present invention, and FIG. 5 is a front view showing an example of the finder field of view according to the present invention. 8... Objective lens woman, fia, 9b... Diffusion plate,
9... Prism, 9a, 9b... Target lens surface, 9c. 9d... Target reflecting surface, 9g=... Eyepiece surface, 10... Prism, 11... Target plate, 11
a. 11b... Optical image frame, 11c... Mask.

Claims

[Scope of Claim for Utility Model Registration] 1. A field optical system, an optical image frame arranged almost symmetrically across the optical axis of the field optical system (both are divided into two parts,
An optical image frame daylight type reverse Galilean finder is provided with an optical image frame optical system that guides the images of the two divided optical image frames into the field of view of the finder. 2. The optical image frame daylighting type reverse Galileo finder according to claim 1, wherein the optical image frame is integrally formed with the target plate together with the mask. 3. The optical image frame-like optical reverse Galilean finder according to claim 1, wherein the optical image frame optical system includes a target mirror, a target mirror, and an eyepiece integrally formed. , 4. The optical image frame daylight type reverse Galilean finder according to claim 1, wherein the field optical system has an objective lens integrally formed with a diffuser plate for illuminating the optical image frame. 5. The optical image frame optical system is an optical image frame daylight type reverse Galilean finder according to claim 1 of the utility model registration claim, which uses the critical angle of the prism to guide the image of the optical image frame into the field of view of the finder. .