JPH0355534A - Lighting range controller for stroboscopic device - Google Patents

Abstract

PURPOSE:To photograph an object clearly even in the case of macrophotography or close-up photography by rotating the stroboscopic device according to the distance information of an automatic focusing device. CONSTITUTION:This controller is equipped with a driving means 42 which adjusts the angle of rotation of the stroboscopic device 20 and a control means 40 which controls the driving means 42 according to the distance information on the object which is range-found by the automatic focusing device. Namely, the automatic focusing device finds the range to the object and operates the driving means 42 for the stroboscopic device according to the distance information, so the driving means 42 adjusts the angle of rotation of the stroboscopic device to irradiate the entire photographic range with stroboscopic light. Consequently, the object can be photographed clearly even by close-up photographing.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a strobe illumination range control device, and more particularly to a strobe illumination range control device that controls the illumination range of a strobe by adjusting the light emission angle of a strobe with a built-in camera. Regarding equipment.

[Conventional technology]

Traditionally, built-in strobes are stored inside the camera when not in use, and when the strobe is used, the strobe opening lever knob on the camera is moved to allow the strobe to protrude from inside the camera and open for use. . In this state, when you press the shirt release button, strobe light is projected onto the subject, allowing you to take a clear picture of the subject. This strobe light is projected as shown in Figure 4, so if the subject is located far away from point A, for example, the strobe light 2 will cover the entire principal light range 4 and capture the subject at point A. You can take clear pictures.

In addition, in FIG. 4, 6 is a camera and 8 is a strobe.

[Problem to be solved by the invention]

However, with conventional strobes, as shown in Figure 4, the optical glaze 4A of the photographing lens and the optical axis 2A of the strobe are far apart, so the subject approaches the camera side from point A due to the influence of balax. and strobe light 2 is shooting range 4
There is a problem that the entire area cannot be covered and the subject cannot be photographed clearly.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a strobe adjustment method and an adjustment device for the same, which can clearly photograph a subject even when photographing the subject from a close distance.

CI! Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a camera having an automatic focus adjustment device and a strobe rotatably disposed on a camera body. A drive means for adjusting the angle, and a control means for controlling the drive means so that the strobe light illuminates the entire shooting range based on distance information of the subject measured by the automatic focus adjustment device. Features.

[Effect]

According to the present invention, when photographing a subject with a camera, it is possible to measure the distance of the subject with the automatic focus adjustment device and operate the driving hand based on the distance information. You can adjust the strobe light to illuminate the entire shooting range.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A strobe illumination range control device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a video camera using a strobe illumination range control device according to the present invention, and is shown when the strobe is open (when in use).

This video camera is an electronic still camera, and when the shirt release button 10 is turned on, the shooting lens 12
The subject image formed on a CCD sensor (not shown) is photoelectrically converted by the CCD sensor and output as a video signal for one screen to a magnetic recording/reproducing device (not shown).

A magnetic recording and reproducing device mainly controls a disk drive unit that rotates a magnetic disk in a video floppy at a predetermined rotational speed, a head feeding mechanism that moves a magnetic head in the radial direction of the magnetic disk, a disk drive unit, a head feeding mechanism, etc. The video signal is magnetically recorded on a predetermined track of a magnetic disk via a magnetic head. Further, the video signal recorded on the magnetic disk is read out as appropriate via the cypress head.

The video floppy is inserted into a floppy holder that is provided inside the lid 14 on the front of the camera and opens and closes with the lid 14, and is positioned at a predetermined magnetic recording/reproducing position by closing the lid 14.

Note that 16 is a lever for opening the lid 14.

Further, a strobe 20 is disposed on the top surface of this electronic still camera so that it can be opened and closed, and the strobe 20 when closed (stored) can be opened by operating an opening lever knob 22. . That is, as shown in FIG. 2, the strobe 20 is supported by the electronic still camera with a support shaft 24 so that it can be moved freely, and when the opening lever knob 22 shown in FIG. 1 is operated, the strobe 20 is unlocked. The biasing force of the spring causes it to rotate clockwise (in the eight directions of arrows in FIG. 2) and become open.

This strobe 20 is provided with a stopper 2OA, which is movably provided in a substantially crescent-shaped hole 38A of the plate 38, and when the stopper 2OA stops at the upper end of 38A, the strobe 20 is in an open state. When the stopper 2OA stops at the lower end of the hole 38A, the strobe 20
becomes closed.

On the other hand, a solenoid 40 is provided on the plate 38, and a plunger 42 is slidably supported within the solenoid 40. The end of the plunger 42 is wedge-shaped;
When plunger 42 moves in the direction of arrow C in FIG.
Since the pressing surface 42A of the wedge-shaped portion presses down the stopper 2OA, the strobe 20 rotates slightly counterclockwise in the direction of arrow B in FIG. Note that the plate 38 is provided on the camera body 36.

Furthermore, since the solenoid 40 is electrically connected to an automatic focus adjustment device (not shown) provided in the electronic still camera, if the distance information of the subject measured by the automatic focus adjustment device is for close-up shooting, the automatic focus Since voltage is applied from the regulator to the solenoid 40, the plunger 4
2 is the second TI! Move in the direction of arrow C on J and press down on surface 42.
Push the stopper 2OA slightly downward with A. Therefore,
The strobe 20 rotates slightly counterclockwise, and as shown in FIG. 3, the strobe light 32 can cover the entire shooting (main light) range 34 of the subject position even in close-up shooting.
The subject can be photographed clearly.

Further, in cases other than close-range photography, no voltage is applied to the solenoid 40 from the automatic focus adjustment device, so the plunger 42 is maintained in a freely slidable state.

Therefore, the stopper 2OA is '! Since it can move to the upper end of the approximately crescent-shaped hole 38A shown in Figure J2, the fourth
As shown in rM, strobe light can illuminate the entire shooting range except for close-up shooting.

〔Effect of the invention〕

According to the illumination range control device for a strobe according to the present invention, the strobe can be rotated so that the strobe light covers the entire photographing range based on the distance information of the automatic focus adjustment device. Therefore, the subject can be clearly photographed even when performing macro photography or close-range photography.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a camera using a strobe illumination range control device according to the present invention, FIG. 2 is a view taken along arrow A-A in FIG. 1, and FIG. 3 is a strobe illumination range according to the present invention. FIG. 4 is a schematic side view showing a strobe light projection state in the case of close-range photography using a camera using a control device. FIG. 4 is a schematic side view showing a strobe light projection state of a conventional camera. 20... Strobe, 20A... Stopper, 24
...Spindle, 32...Strobe light, 34...
Principal light range, 40...Solenoid, 42...Blunger.

Claims (1)

[Scope of Claims] A camera having an automatic focus adjustment device and a strobe rotatably disposed on a camera body, including a driving means for adjusting a rotation angle of the strobe, and a drive means for adjusting a rotation angle of the strobe, and a drive means for adjusting a rotation angle of the strobe; An illumination range control device for a strobe, comprising: control means for controlling the drive means so that the strobe light illuminates the entire photographing range based on distance information of a subject that has been distanced.