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:
Aug. 27, 2019
Filed:
Oct. 13, 2017
Graduate School AT Shenzhen, Tsinghua University, Shenzhen, Guangdong, CN;
Xuemin Cheng, Guangdong, CN;
Hongsheng Bi, Guangdong, CN;
Yonghong He, Guangdong, CN;
Zhonghua Cai, Guangdong, CN;
Jiayong Lin, Guangdong, CN;
GRADUATE SCHOOL AT SHENZHEN, TSINGHUA UNIVERSITY, Shenzhen, Guangdong, CN;
Abstract
A telecentric illumination and photographing system for detection of marine microscopic organisms includes an optical path module and an illumination drive module, where the optical path module includes: an LED light source, a light homogenizing rod, a decoherence light homogenizing sheet, a diaphragm, a telecentric collimation camera, where a light beam emitted from the diaphragm is incident into a microscopic organism area with uniform illuminance after passing through the telecentric collimation camera; and a telecentric imaging camera, matching the telecentric collimation camera to receive an illumination beam passing through the microscopic organism area and output the illumination beam to an imaging unit, to obtain an imaging result of uniform illuminance. Further, the illumination drive module enables the LED light source to work in a stable state in which light emitting intensity is constant, thereby improving current output accuracy.