light sensor

Abstract

Abstract PURPOSE:To obtain a photosensor having a sensitivity frequency characteristic resembling to man's visual sensitivity by using a material known as a ''visual pigment'' as a material for the photosensor. CONSTITUTION:The visual pigment refers to rhodopsin or the like; for example, the bacteriorhodopsin existing in the cellular membrane of a halophile bacterium is one example thereof, and has the function to change the ion concn. of hydrogen on both sides of the membrane when the membrane receives light. When the information of light is converted to a change of the value of pH, said change can be converted to the quantity of electricity. Said material is mounted in the sensitive part of a hydrogen ion sensitive sensor 2 by an immobilizing method using a gel. When light is irradiated to a membrane 3 by a light beam 6, the concn. of hydrogen ion changes in the membrane and the change is detected by the sensor 2.

Inventors

• 👤 Kenichi Inatomi
• 👤 健一 稲富
• 👤 Satoru Isoda
• 👤 悟 磯田

Bibliographic Details