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:
Apr. 05, 2022
Filed:
Mar. 13, 2020
Applicant:
Advantest Corporation, Tokyo, JP;
Inventors:
Assignee:
ADVANTEST CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2020.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2635 (2013.01); G01R 31/2887 (2013.01);
Abstract
A test apparatus includes an electrical connection unit electrically connected to respective terminal of each of a plurality of LEDs to be tested, a light source unit which collectively irradiates the plurality of LEDs with light, a measuring unit which measures a photoelectric signal that each of the plurality of LEDs outputs via the electrical connection unit after photoelectrically converting the light with which the light source unit irradiates the plurality of LEDs, and a determination unit which determines pass or fail of each of the plurality of LEDs based on the measurement results by the measuring unit.