| 摘要 |
PURPOSE:To prevent an erroneous action due to outside disturbance by configurating a device in such a way that one of the plural number of photoelectric transducers is used for the detection of dark current, and the rest of them is interrupted so as to obtain the performance of an specified directional angle in a photosensing device employed by an automatic head light change-over device and the like. CONSTITUTION:In a composition where the plural number (eight each shown in the figure) of photoelectric transducers 10a through 10h as an optical sensor 10 which senses the head light from a car running on the opposite lane, are arranged in a same plane, one (10a) of these transducers is used for the detection of dark current so as to output only dark current at all times whereby the overall surface of the transducer is covered with an AL electrode 15 of a cathode side. Besides, the upper and lower portion of the photoelectric transducers 10b, 10c, 10g, and 10h are covered with the Al electrode 15 of the cathode side, and the change of their electrode section allows their directional angle to up and down to be changeable. Moreover, a P layer of the photoelectric transducers 10d through 10f is not made to be covered with the AL electrode 15 of the cathode side. |
