Patent ID: 9368529
Filing Date: 2016-06-14
CPC Classification: G01B,G01J,G01S,H01L

Claim Text:
1. A sensor unit for detecting reference and measurement radiation for a distance measuring apparatus, the sensor unit comprising: a sensor element having a planar sensor surface; an optical shielding device, wherein the sensor element has a first detection region under the sensor surface for detecting measurement radiation and a second detection region under the sensor surface for detecting reference radiation, wherein the optical shielding device optically isolates the first and second detection regions from one another, wherein the optical shielding device is positioned and fixed with respect to the sensor element, wherein the optical shielding device includes a first cutout and a second cutout, which are transmissive to optical radiation in a first wavelength range, wherein the optical shielding device includes (i) a first bearing surface that engages a lateral surface of the sensor element so as to orient the optical shielding device laterally with respect to the sensor element and (ii) a second bearing surface that orients the optical shielding device vertically with respect to the sensor element, wherein the optical shielding device is opaque to optical radiation in the first wavelength range, wherein: