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:
Oct. 31, 2023
Filed:
Dec. 31, 2019
Applicant:
Huanic Corporation, Shaanxi, CN;
Inventors:
Assignee:
Huanic Corporation, Shaanxi, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41G 1/30 (2006.01);
U.S. Cl.
CPC ...
F41G 1/30 (2013.01);
Abstract
A reflective inner red dot sight optical system with improved monochromaticity and concealment, a two-light three-color optical system, and a sight thereof. The reflective inner red dot sight optical system comprises an LED chip and a lens for reflecting light emitted from the LED chip. A filter provided with a narrow-band interference filter coating is provided near the LED chip and located between the LED chip and the lens. The filter is used to filter out wide band waves not in the central wavelength of the light reflected from the lens into the eye, thereby improving the monochromaticity of the light entering the eye.