US 11,867,890 B2
Optical element for light concentration and production method for an optical element for light concentration
Benedikt Stein, Stuttgart (DE); Martin Husnik, Stuttgart (DE); Robert Schittny, Oslo (NO); and Christoph Daniel Kraemmer, Karlsruhe (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/055,261
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Apr. 10, 2019, PCT No. PCT/EP2019/059038
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2019/223929, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 10 2018 208 185 (DE), filed on May 24, 2018.
Prior Publication US 2021/0124159 A1, Apr. 29, 2021
Int. Cl. G02B 19/00 (2006.01); G01J 3/02 (2006.01); G02B 1/04 (2006.01); G02B 5/02 (2006.01)
CPC G02B 19/0076 (2013.01) [G01J 3/0216 (2013.01); G01J 3/0256 (2013.01); G02B 1/04 (2013.01); G02B 5/0242 (2013.01); G02B 5/0247 (2013.01); G02B 5/0263 (2013.01); G02B 5/0268 (2013.01); G02B 5/0278 (2013.01); G02B 19/0095 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An optical element for light concentration for a predetermined wavelength range, comprising:
a holding sleeve having at least one reflective partial surface, the holding sleeve shaped such that a light passage volume is framed by the at least one reflective partial surface; and
a light transmission body, with which the light passage volume is at least partially filled and which is transmissive at least for the predetermined wavelength range, the light transmission body formed at least partially from at least one medium which is diffuse for the predetermined wavelength range, the light transmission body comprising at least a first subregion with at least one first diffusivity and a second subregion with at least one second diffusivity, which is different from the first diffusivity.