US 11,914,214 B2
Reflective device
Laurent Mollard, Grenoble (FR); Christel Dieppedale, Grenoble (FR); Laurent Frey, Grenoble (FR); Francois Gardien, Grenoble (FR); and Jean Hue, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Apr. 15, 2020, as Appl. No. 16/848,896.
Claims priority of application No. 19 04137 (FR), filed on Apr. 18, 2019.
Prior Publication US 2020/0333547 A1, Oct. 22, 2020
Int. Cl. G02B 7/00 (2021.01); G01S 7/481 (2006.01); G02B 5/02 (2006.01); G02B 26/08 (2006.01); G02B 5/00 (2006.01)
CPC G02B 7/008 (2013.01) [G01S 7/4817 (2013.01); G02B 5/003 (2013.01); G02B 5/0205 (2013.01); G02B 5/0226 (2013.01); G02B 26/0833 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A reflector device configured to reflect incident luminous radiation of wavelength λ, the device comprising a supporting base whereon are assembled:
a partially transparent mirror, having a partially reflective front face that reflects a fraction of the incident luminous radiation on the front face;
luminous radiation scattering means configured to scatter luminous transmitted radiation that traverses through the partially transparent mirror and emerges via a rear face of the partially transparent mirror, the rear face being opposite the front face; and
holding means for holding the partially transparent mirror, wherein the holding means enable the partially transparent mirror to be pivoted about at least one axis,
wherein the wavelength λ is higher than 1250 nm,
wherein said device is a Light Detection And Ranging device,
wherein the partially transparent mirror has a reflection coefficient of the incident luminous radiation of at least 96%,
wherein the scattering means are disposed facing and away from the rear face, and
wherein the scattering means comprise a series of first collection strips, essentially flat, each provided with a first front face and a first rear face opposite the first front face, the first collection strips being aligned along an alignment direction, parallel with one another, and oriented so as to partially reflect, toward a first dissipator, the transmitted luminous radiation liable to be transmitted by the rear face.