JPH0329814U

JPH0329814U -

Info

Publication number: JPH0329814U
Application number: JP8877289U
Authority: JP
Priority date: 1989-07-28
Filing date: 1989-07-28
Publication date: 1991-03-25

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例の光学部材の支持
装置を用いた結像光学系のＬブロツク部、撮像光
学系およびフアインダ光学系の分解斜視図、第２
図は、上記第１図の支持装置を用いた結像光学系
のテイキングレンズ部の分解斜視図、第３図は、
上記第１図の支持装置を用いた結像光学系のＬブ
ロツクのシンプレートミラー支持部の斜視図、第
４図は、上記第１図の支持装置を用いた結像光学
系におけるスクリーンマツト上の結像位置のずれ
説明のためのシンプレートミラー、および、スク
リーンマツト部の要部断面図、第５図は、上記第
１図の支持装置を用いた結像光学系のシンプレー
トミラー支持部の要部断面図、第６図Ａ，Ｂは、
上記第１図の結像光学系の要部の斜視図を示し、
シンプレートミラーの支持位置を説明するもので
あつて、第６図Ａはフアインダ用光束のための反
射方向が撮像素子の水平走査方向と一致している
場合の斜視図、第６図Ｂはそれが直交している場
合の斜視図、第７図は、上記第１図の結像光学系
のシンプレートミラーのクツシヨン材接着時の斜
視図、第８図は、上記第１図の結像光学系のシン
プレートミラーのコーテイング状態を示す平面図
である。１……Ｌブロツク（支持メンバー）、２……シ
ンプレートミラー（方形板状の光学部材）、２ｉ
，２ｊ，２ｉ′，２ｊ′……辺部（両辺に沿う領
域）、Ｈ……仮想的回動中心軸。 FIG. 1 is an exploded perspective view of an L block portion of an imaging optical system, an imaging optical system, and a finder optical system using an optical member support device according to an embodiment of the present invention;
The figure is an exploded perspective view of the taking lens section of the imaging optical system using the support device shown in FIG. 1, and FIG.
A perspective view of the thin plate mirror support portion of the L block of the imaging optical system using the support device shown in FIG. 1 above, and FIG. FIG. 5 is a cross-sectional view of the main parts of the shin plate mirror and the screen mat part to explain the deviation of the image forming position of the image forming position. FIG. The main part sectional view, Fig. 6A, B is as follows.
1 shows a perspective view of the main parts of the imaging optical system shown in FIG. 1,
This is to explain the support position of the thin plate mirror, and FIG. 6A is a perspective view when the direction of reflection for the viewfinder light beam coincides with the horizontal scanning direction of the image sensor, and FIG. 6B is a perspective view thereof. FIG. 7 is a perspective view of the imaging optical system shown in FIG. 1 above when the cushion material of the shim plate mirror is adhered. FIG. 8 is a perspective view of the imaging optical system shown in FIG. 1 above. FIG. 3 is a plan view showing the coating state of the shin plate mirror of the system. 1... L block (supporting member), 2... Thin plate mirror (rectangular plate-shaped optical member), 2i
, 2j, 2i', 2j'...Side part (area along both sides), H...Virtual rotation center axis.

Claims

[Scope of utility model registration request]

When supporting a rectangular plate-shaped optical member that is inserted into a predetermined imaging optical system at a predetermined angle of inclination with respect to its optical axis on the incident side, the optical member is 1. A support device for an optical member, characterized in that the device is fixed to a predetermined support member at an appropriate position in a region along both sides of the intersection of a virtual center axis of rotation and a portion of itself or an extension of itself.