| 摘要 |
PURPOSE:To facilitate bonding of a filter member on the surface of a light transmissive member. CONSTITUTION:In the infrared ray receiver wherein an opening 47 made through a cap-shaped casing 31 is sealed with a glassy light transmissive member 48, filter member 37a of liquid epoxy resin is dripped on the surface of the light transmissive member 48 so that the opening 47 is covered thereby and the filter member 37 is subsequently dried to form an infrared ray transmissive filter. Since the filter member 37a is formed by dripping the liquid epoxy resin, it can be shaped arbitrarily and applicable to various case structure while furthermore the filter member 37a can be bonded easily to the surface of the light transmissive member 48. In addition. the glassy light transmissive member 48 is reinforced, airtightness in the case 31 is enhanced, and reliability of receiving ICs incorporated in the case 31 and circuit components mounted on the board is enhanced. |
