Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1988-03-02
1989-11-21
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250209, 356343, H01J 4014, G01N 2100
Patent
active
048824780
ABSTRACT:
A photoelectric conversion sensor for measuring particle size or size distribution based on the light scattering phenomena with excellent precision and higher resolving power. The sensor is characterized in that 8 or more arcuate photoelectric conversion elements each being defined by two concentric arcs with different radii and two adjacent elements in the radial direction are so arranged that the gaps in the radial direction between two adjacent elements in the radial direction can be substantially eliminated by shifting them in the circumferential direction.
REFERENCES:
patent: 4037965 (1977-07-01), Weiss
patent: 4274741 (1981-06-01), Cornillault
Hayashi Shigeru
Horiuchi Shoji
Saito Takasui
Takahashi Tadashi
Hideo Nagasu and Tohnichi Computer Applications Co., Ltd.
Messinger Michael
Nelms David C.
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