| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a photoreflector which can suppress variations in photocurrent value influencing the sensitivity level as a sensor and can adjust the photocurrent value finely according to a predetermined range. <P>SOLUTION: The photoreflector 30 including a substrate 32 on which an electrode pattern on the light emission side and an electrode pattern on the light reception side are formed, a light emitting element 42 and a light receiving element 44 arranged, respectively, on the light emission side electrode pattern and the light reception side electrode pattern, a sealing member 46 on the light emission side and a sealing member 48 on the light reception side for sealing the light emitting element 42 and the light receiving element 44, respectively, from above with translucent resin 49, and a member 50 for shutting out the light excepting the upper surface of the sealing members 46 and 48 detects an object 62 to be detected passing above the light emitting element 42 and the light receiving element 44 by a photocurrent of a predetermined sensitivity level, wherein the sensitivity level is adjusted by adjusting the height of the sealing member 48 by filling the translucent resin 49. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
