JPS59128642U

JPS59128642U - Mirror device for single-lens reflex camera

Info

Publication number: JPS59128642U
Application number: JP2364583U
Authority: JP
Inventors: 山根　豊; 石田　岩央
Original assignee: ミノルタ株式会社
Priority date: 1983-02-18
Filing date: 1983-02-18
Publication date: 1984-08-29

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図は本考案の一実施例のうち図射鏡が下降した位置
にある状態を示す側面図、第２図は同上実施例のうち反
射鏡の上昇を示す側面図、第３図は同上実施例のうち、
副反射鏡に与えられた付勢力が不充分である場合の反射
鏡の上昇途中の状態を示す側面図、第４図は同上実施例
のうち、副反射鏡に与えられた付勢力が不充分である場
合の反射鏡の上昇完了状態を示す側面図である。３・・・主ミラー、５・・・主ミラーホルダー、１３・
・・副ミラー、１５・・・副ミラーホルダー、１７・・
・副ミラー制御ピン、１９・・・カム溝、１９ａ・・・
副ミラー上昇カム面、２１・・・副ミラー角度調節部材
。Fig. 1 is a side view of an embodiment of the present invention showing the reflecting mirror in a lowered position, Fig. 2 is a side view of the embodiment of the invention showing the reflecting mirror in a raised position, and Fig. 3 is the same as above. Among the examples,
A side view showing a state in which the reflecting mirror is in the middle of rising when the urging force applied to the sub-reflector is insufficient. FIG. FIG. 3 is a side view showing a state in which the reflecting mirror has completed its ascent. 3... Main mirror, 5... Main mirror holder, 13.
...Secondary mirror, 15...Secondary mirror holder, 17...
・Secondary mirror control pin, 19...cam groove, 19a...
Sub-mirror raising cam surface, 21... sub-mirror angle adjustment member.

Claims

[Claims for Utility Model Registration] 1. A main reflecting mirror whose reflecting surface is semi-transparent or partially transparent, reflecting the subject light incident from the photographic lens and guiding it to the finder optical system; Observation in which the main reflector is held in a single-lens reflex camera equipped with a sub-reflector that reflects the light that has passed through the main reflector and guides it to the light receiving element, and the subject light reflected by the main reflector is guided to the finder optical system. A main reflector holder is pivotally supported to swing between the main reflector holder and a photographing position retracted from the subject optical path. A sub-reflector holder that holds the sub-reflector, a sub-reflector control pin implanted in the sub-reflector holder, and a sub-reflector control pin that contacts the sub-reflector control pin to control the position of the sub-reflector. A mirror device for a single-lens reflex camera consisting of a cam part that can regulate the 2. The cam part is formed as a cam groove on the side of the mirror box, and the sub-reflector control pin is fitted into the cam groove, causing the sub-reflector and the sub-reflector holder to resist the urging force when the main reflector is at the observation position. When the main reflector and the main reflector holder are moved from the observation position to the photographing position, the observation position regulating section moves the main reflector away from the back side, and the sub-reflector and the sub-reflector holder are moved away from the main reflector and the main reflector holder. 2. A mirror device for a single-lens reflex camera according to claim 1, further comprising a sub-reflector follower for forcibly following a mirror holder. 3. The observation position regulating section is supported by a rotating shaft at one end and an eccentric pin at the other end, and can be rotated and adjusted. 3. The mirror device for a single-lens reflex camera according to claim 2, wherein the mirror device is constituted by a cross section of the sub-reflector angle adjusting member that overlaps the cam groove.