The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1989
Filed:
Mar. 02, 1988
Applicant:
Inventors:
Shigeru Hayashi, Chofu, JP;
Takasui Saito, Chofu, JP;
Shoji Horiuchi, Chofu, JP;
Tadashi Takahashi, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; G01N / ;
U.S. Cl.
CPC ...
2502 / ; 250209 ; 356343 ;
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.