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:
Sep. 12, 2023
Filed:
Mar. 26, 2019
Topcon Corporation, Tokyo, JP;
Nobuyuki Nishita, Tokyo, JP;
Takashi Takahashi, Tokyo, JP;
Tatsuya Kojima, Tokyo, JP;
Saki Horita, Tokyo, JP;
TOPCON CORPORATION, Tokyo, JP;
Abstract
An electro-optical distance meter includes a light source configured to emit light for distance measurement, a detector configured to receive the light and generate a distance measurement signal, a calculator configured to measure the distance from the distance measurement signal, an external optical path configured to guide the light from the light source to a target as measurement light, an internal optical path configured to guide the light from the light source directly to the detector as reference light, and a liquid shutter that can select one of the external and internal optical paths as the optical path through which the light from the light source travels by switching a region of light-blocking liquid.