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. 21, 2020
Filed:
Jun. 12, 2018
Industrial Technology Research Institute, Hsin-Chu, TW;
Chun-Ting Lin, Taipei, TW;
Chen-Chin Cheng, Hsinchu, TW;
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsin-Chu, TW;
Abstract
An image ranging system has a light source module having a light source diode and a light source lens, and an image sensing module, placed near the light source, having an image sensing device and an image sensing lens. An optical signal emitted from the light source diode passes through the light source lens with a luminous intensity profile which is characterized by intensity Iand then reaches an object. A reflection signal is generated by the object. The relationship between the intensity Iand the emission angle θ of the optical signal is I=1/cosθ. The reflection signal into the image source lens has an incident angle θ the same as the emission angle of the optical signal, and images the object onto the image sensing device. The ratio of the height of object image to the effective focal length of image sensing lens is proportional to sin θ.