JPS643829U

JPS643829U -

Info

Publication number: JPS643829U
Application number: JP9436987U
Authority: JP
Priority date: 1987-06-18
Filing date: 1987-06-18
Publication date: 1989-01-11

Description

[Brief explanation of the drawing]

第１図は、本考案装置を適用したオートフオー
カスカメラの一実施例を示す概略構成図、第２図
Ａ，Ｂは、上記第１図のカメラに有した複数個の
補助光ユニツトがすべて有効であるときと、ボデ
イ補助光ユニツトからの補助光が交換レンズに妨
げられるときをそれぞれ示した補助光照射状態図
、第３図は、上記第１図中の交換レンズの一例を
示す拡大断面図、第４図は、上記第１図のカメラ
の電気系の構成を示すブロツク図、第５図は、上
記第４図中のメインＣＰＵの＜メイン＞ルーチン
のフローチヤート、第６図は、上記第５図中の＜
ＡＦ＞ルーチンのフローチヤート、第７図は、＜
ＡＦ＞ルーチンの他の例を示すフローチヤートで
ある。８……ＡＦ制御部（補助光制御部）、９……制
御回路（補助光制御部）、２１……レンズ補助光
ユニツト、２２……ボデイ補助光ユニツト、２３
……ストロボ補助光ユニツト、２８……メインＣ
ＰＵ（補助光制御部）。 FIG. 1 is a schematic configuration diagram showing an embodiment of an autofocus camera to which the device of the present invention is applied, and FIGS. Figure 3 is an enlarged cross-sectional view of an example of the interchangeable lens in Figure 1. 4 is a block diagram showing the configuration of the electrical system of the camera shown in FIG. 1, FIG. 5 is a flowchart of the main routine of the main CPU in FIG. 4, and FIG. < in Figure 5 above
AF＞routine flowchart, Figure 7 is <
AF> is a flowchart showing another example of the routine. 8...AF control section (assist light control section), 9...control circuit (assist light control section), 21...lens auxiliary light unit, 22...body auxiliary light unit, 23
... Strobe auxiliary light unit, 28 ... Main C
PU (auxiliary light control unit).

Claims

[Scope of Claim for Utility Model Registration] (1) In an autofocus camera that detects the amount of deviation of the subject from the expected focus position and performs autofocus control based on the amount of deviation, when performing the above autofocus control, A plurality of fill light units that emit fill light to illuminate the subject when the brightness of the subject is insufficient, and a fill light control section that selects and drives one of the plurality of fill light units. Auxiliary light device for auto focus cameras. (2) The auxiliary light control section is characterized in that the auxiliary light unit selects and drives one of the auxiliary light units based on the distance range information irradiated by the auxiliary light unit and the subject distance information based on the focus lens position. An auxiliary light device for an autofocus camera according to claim 1, which is a utility model. (3) An autofocus camera according to claim 2 of the utility model registration claim, characterized in that the object distance information based on the focus lens position is not used during the first distance measurement of the autofocus operation. auxiliary light device. (4) The auxiliary light control section compares the information on the outer diameter tip of the photographing lens barrel with the effective luminous flux information of the auxiliary light, and when the outer diameter tip position falls within the effective luminous flux of the auxiliary light, the auxiliary light controller An auxiliary light device for an autofocus camera according to claim 1, characterized in that the auxiliary light unit is prohibited from being driven. (5) The auxiliary light control section compares the distance range information illuminated by the auxiliary light with the information on the closest focusable distance of the focus lens during the first distance measurement of the autofocus operation, and An auxiliary light device for an autofocus camera according to claim 1 of the patent registration claim, characterized in that the auxiliary light unit of the auxiliary light is prohibited from being driven when the irradiation distance range is smaller than the closest distance. .