PHOTOELECTRIC SENSOR AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To give a shield function to an MID package formed by mounting a photoelectric element on an MID, surely prevent outside electromagnetic noise or impulse noise to enhance accuracy by utilizing the element surrounding as an electric black box with a transparent conductive coat of an optical lens and a conductive coat formed in the MID package in the surrounding of a light projecting element. SOLUTION: A photoelectric function module 40 is formed in such a way that an MID package 44 having a conductive coat 46 on the inner surface of an MID 41 and an optical lens 45 having a transparent conductive coat 47 are coupled in an optical axis reference of a photoelectric element and the optical lens 45, inserted in a mold of a surface side case 21, then injection molded. The transparent conductive coat 47 of the optical lens 45 and the conductive coat 46 on the inside of the MID are connected, a space surrounding an LED chip 42 and a photo IC 43 is surrounded with the conductive coat 46 and the transparent conductive coat 47 to form an electric black box. Since the surrounding of the LED chip 42 is shielded, electromagnetic noise is not leaked to the outside, and outside electromagnetic noise does not enter even in the photo IC 43.