US 11,841,461 B2
Distance measuring device and light-emitting module thereof
Shu-Shan Chen, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Chih-Wei Weng, Taoyuan (TW); and Sin-Jhong Song, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Dec. 15, 2020, as Appl. No. 17/122,486.
Application 17/122,486 is a continuation of application No. 16/164,193, filed on Oct. 18, 2018, granted, now 10,895,642.
Claims priority of provisional application 62/621,967, filed on Jan. 25, 2018.
Claims priority of provisional application 62/573,918, filed on Oct. 18, 2017.
Claims priority of application No. 201811191146.3 (CN), filed on Oct. 12, 2018.
Prior Publication US 2021/0096223 A1, Apr. 1, 2021
Int. Cl. G01S 7/481 (2006.01); G01S 17/48 (2006.01); G01S 17/89 (2020.01); H04N 13/15 (2018.01); H04N 13/156 (2018.01); G01B 11/25 (2006.01); G01S 17/86 (2020.01); H04N 23/84 (2023.01)
CPC G01S 7/4814 (2013.01) [G01B 11/2513 (2013.01); G01S 7/4815 (2013.01); G01S 17/48 (2013.01); G01S 17/86 (2020.01); G01S 17/89 (2013.01); H04N 13/15 (2018.05); H04N 13/156 (2018.05); H04N 23/84 (2023.01)] 16 Claims
OG exemplary drawing
 
1. A distance measuring device for measuring a distance to an object, comprising:
a light-emitting module, comprising:
a housing;
a collimating lens, disposed in the housing;
a beam expander, disposed in the housing;
a first reflecting element, disposed in the housing;
a second reflecting element, disposed in the housing;
a light grating element, wherein the collimating lens is located between the beam expander and the light grating element along a first axis;
a light source, emitting a measuring light sequentially through the beam expander, the collimating lens, the first and second reflecting elements, and the light grating element to the object, wherein the first and second reflecting elements are disposed between the light grating element and the light source;
a driving assembly, disposed in the housing to drive the collimating lens, the first reflecting element, the second reflecting element, or the light grating element to move relative to the housing, wherein the collimating lens is driven to move along the first axis and a second axis by the driving assembly, and the second axis is perpendicular to the first axis;
a light-receiving module, receiving the measuring light which is reflected by the object to obtain distance information of the object and generating a non-color image of the object;
an image capturing module, capturing a color image of the object; and
an image processing module, combining the color image with the non-color image to generate a 3D composite image of the object.