Photographing apparatus for an endoscope
AssigneeOlympus Optical Co., Ltd.
InventorYuji Ikuno
Life of this patent
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Abstract
A camera for an endoscope has a transmitting circuit for transmitting a release signal and a modulated signal modulated by a photocurrent signal, and a superposing circuit for superposing the modulated signal onto a motor drive line connecting to a film wind motor. A light source unit has a demodulated circuit for demodulating the modulated signal transmitting from the transmitting circuit, through the motor drive line. An exposure measuring circuit calculates an optimum exposure by using the demodulated signal from the demodulating circuit.
Claims7
A photographing apparatus for an endoscope for making an automatic exposure photograph through the combination of a light source unit, an endoscope and a camera for endoscope photograph, wherein the camera for endoscope photograph includes a photosensing element for producing a photocurrent signal, a transmitting circuit for transmitting a release signal produced in response to the operation of a release switch and a modulated signal modulated by the photocurrent signal derived from said photosensing element, and a superposing circuit for superposing the modulated signal onto a motor drive line connected to a film wind motor, and the light source unit includes a demodulating circuit for demodulating the modulated signal transmitted from said transmitting circuit and an exposure measuring circuit for measuring an optimum exposure by using a demodulated signal from said demodulating circuit.
Dependencies are inferred from the claim text.