Flash device, camera with said flash device and control method for said camera

Abstract

A stroboscopic device is embarked on a camera. Because the irradiating direction of strobe light is fixed, there is a problem that a part of photographed object presented at super close distance can not be illunimated to darkle. Although the irradiating direction of strobe light can be changed manually, it is inconvenient. The invention relates to a stroboscopic device equipped with a function of changing the irradiating direction of strobe light. A driving spring made of shape memory alloy is coupled with the rear part of a reflector turnably supported so that the irradiating direction of the strobe light can be changed. The driving spring is applied with voltage in accordance with range-finding data and focus data and makes the reflector turn to let the illuminating range of the strobe light cover the camera coverage of the camera optical system.

Description

technical field [0001] The present invention relates to a flash device (strobo device), a camera equipped with the flash device (Limera) and a control method of the camera, and particularly relates to a flash technology capable of changing the irradiation direction of the flash to illuminate the shooting range. Background technique [0002] Generally, when the image of the subject is dark such as night photography, it is necessary to use the auxiliary light. Auxiliary light ranges from light for lighting to various types of light, but it is usually flashed using a flash device, that is, using a flash. Such flash devices include a built-in type that is built into a camera, and an external type that is separately attached to an accessory or the like from the camera. [0003] In addition, the photographic range of a camera equipped with a photographic lens with variable focal length, that is, a so-called zoom lens, can be arbitrarily determined by the photographer. [0004] I...

AI Technical Summary

Problems solved by technology

[0008] In addition, although the reflector part can be rotated, it is too troublesome to manually change the irradiation direction every time the focal length of the photographic lens is changed. The problem of exposure in the direction of illumination

[0009] In addition, the flash device that changes the illumination range by moving the flash discharge tube and reflector back and forth and changing the irradiation angle has a complicated structure.

In addition, although the built-in flash device can move the reflector like the external flash device, it cannot ensure the necessary space, which will lead to an increase in the size of the camera, so this function cannot be used.

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