Fitzpatrick Cella, Harper & Scinto
Semiconductor photo-sensor and method for manufacturing the same
 A semiconductor optical device is provided with a photo-electric conversion unit having plural photo-electric conversion elements and is entirely sealed by a sealing member. The photo-electric conversion elements are connected to external leads with electrical connectors. The distance D between a planar outer surface and a photoelectric conversion area satisfies the equation, D.gtoreq./2.multidot.l/tan .theta., where .theta. is a critical angle of total reflection of the sealing member with respect to air and l is the maximum length of said photoelectric conversion area. 
Canon Kabushiki Kaisha
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Akio Hiromichi Yasuo Keiji Ichiro Tetsuo Toshiaki Taichi
Mihara Yamashita Suda Ohtaka Ohnuki Yoshizawa Sato Sugimoto