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. 29, 2022
Filed:
Sep. 22, 2020
National Tsing Hua University, Hsinchu, TW;
Jwo-Huei Jou, Hsinchu, TW;
Jing-Hsiu Chen, Hsinchu, TW;
NATIONAL TSING HUA UNIVERSITY, Hsinchu, TW;
Abstract
A device for simply determining maximum permissible exposure time (MPE) of retina is disclosed, which principally comprises a light receiving unit and a core processor that is provided with a color temperature determining unit, a luminous flux determining unit and a calculating unit therein. The color temperature determining unit and the luminous flux determining unit are configured for completing a color temperature determination and a luminous flux determination of a light provided by a light source, respectively. The calculating unit is configured for calculating a maximum permissible exposure time (MPE) of retina of the light source based on a use distance and a color temperature and a luminous flux of the light. By using this device, generic users are facilitated to achieve the calculation of any one kind of light's MPE by themselves, without needing to using any spectrometer.