SEMICONDUCTOR SPECTROSCOPIC DETECTOR,申请号JP19920050684-传众专利搜索

SEMICONDUCTOR SPECTROSCOPIC DETECTOR

申请公布号：JPH05249032(A)

申请号：JP19920050684

申请日期：1992.03.09

申请公布日期：1993.09.28

申请人：

YABE MASAYA;JAPAN TOBACCO INC

发明人：YABE MASAYA;ONO TAKAHIRO;OKUYAMA YOSHIMASA;MIYAUCHI MAKOTO

分类号：G01J3/36;G01N21/27;G01N21/3554;(IPC1-7):G01N21/27;G01N21/35

主分类号：G01J3/36

摘要：<p>PURPOSE:To obtain a semiconductor spectroscopic detector for receiving only light having a specific wavelength different from each other by providing a plurality of light receiving parts on a semiconductor light receiving element. CONSTITUTION:Light from a light source is condensed to be applied to an object to be measured, and measurement light reflected by the object is spectroscopically detected by a semiconductor light receiving element 1. Three series of mesa-type light receiving parts 3a, 3b, 3c comprising P-N junction are constituted in a semiconductor light receiving element. Band pass filters 4a, 4b, 4c for transmitting only light having specific different wavelength are provided on the respective light receiving parts 3a, 3b, 3c. When light is incident from an upper face of a case 2 (left side in the figure), the respective light receiving parts 3a, 3b, 3c receive only light which has transmitted through the filters 4a, 4b, 4c placed on the light receiving faces to make outputs, permitting spectroscopic detection.</p>