Patent ID: 6304331
Filing Date: 2001-10-16
Classification: G02B,G03B

Abstract:
An exposure control device including distance measuring means including light receiving means for receiving light from a subject object, and making use of an output from the light receiving means to measure a distance up to the subject object, the exposure control device comprising:a storage circuit storing as standard data relating relationships between distances up to a standard test object having a standard reflection coefficient that is disposed at a plurality of known distances as actually measured by the exposure control device, and amounts of light received by the light receiving means when respective ones of the distances are measured;reflection coefficient detecting means for detecting a reflection coefficient of the subject object on the basis of an output from the light receiving means, which yields a measured distance of the subject object, and the standard data stored in the storage circuit;flash means for radiating light on the subject object; andcontrol means for controlling an amount of exposure, when the flash means radiates, in accordance with the distance up to the subject object and the reflection coefficient of the subject object.