JPS5951311U - focus detection device - Google Patents

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 drawings]

第１図は従来の焦点検出装置の結像光学系と照明装置の
投射光を示す斜視図、第２図は本考案の焦点検出装置の
一実施例を示す斜視図である。 １．２・・・・・・焦点検出装置の結像レンズ、３・・
・・・・照明装置、４・・・・・・照明装置の投光レン
ズ、５・・・・・・結合部材、６，７・・・・・・全反
射ミラー、８・・・・・・プリズム、９・・・・・・光
電変換手段。FIG. 1 is a perspective view showing an imaging optical system of a conventional focus detection device and projection light of an illumination device, and FIG. 2 is a perspective view showing an embodiment of the focus detection device of the present invention. 1.2... Imaging lens of focus detection device, 3...
...Lighting device, 4...Light projection lens of lighting device, 5...Coupling member, 6, 7... Total reflection mirror, 8... - Prism, 9...Photoelectric conversion means.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 基線長を隔てて配置された一対の結像光学系により光電
変換手段上に被写体を結像し、画像の間隔、もしくは受
光値から物体までの距離を検出する焦点検出装置におい
て、被写体光が所定レベル以下の低輝度の場合、被写体
に対して補助光を投射する照明手段が前記一対の結像光
学系の少なくとも一方の結像光学系と付随して動くこと
を特徴とする焦点検出装置。In a focus detection device that images an object on a photoelectric conversion means using a pair of imaging optical systems arranged with a baseline length apart, and detects the distance to the object from the image interval or the received light value, the object light is A focus detection device characterized in that, in the case of low luminance below a level, an illumination means for projecting auxiliary light onto a subject moves in conjunction with at least one of the pair of imaging optical systems.