US 12,282,158 B2
Optical element for expanding and uniforming beam of light
Ugis Gertners, Riga (LV); Ilmars Osmanis, Mārupes novads (LV); Martins Narels, Riga (LV); Ainars Ozols, Siguldas novads (LV); Sandra Balode, Ogres novads (LV); and Roberts Zabels, Riga (LV)
Assigned to Lightspace Technologies, SIA, Marupes novads (LV)
Filed by Lightspace Technologies, SIA, Marupes novads (LV)
Filed on Oct. 29, 2021, as Appl. No. 17/514,679.
Prior Publication US 2023/0133231 A1, May 4, 2023
Int. Cl. G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/10 (2006.01)
CPC G02B 27/0081 (2013.01) [G02B 27/0172 (2013.01); G02B 27/1006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical element for expanding and uniforming a beam of light comprising:
a plurality of layers of a first type and a plurality of layers of a second type, wherein the plurality of layers of the first type and the plurality of layers of the second type are arranged as a stack of layers, in which the stack of layers every second layer is of the first type and every other second layer is of the second type,
wherein:
the stack of layers comprises an input facet for receiving a beam of light and an output facet to output an expanded and uniformed beam of light, wherein first side edges of the first type of the plurality of layers and the second type of the plurality of layers are aligned with the input facet and second side edge of the first type of the plurality of layers and second type of the plurality of layers are aligned with the output facet, and
the stack of layers forms a right triangular prism in which a surface of the input facet forms a first side of the right triangular prism and a surface of the output facet forms a second side of the right triangular prism and the first side and the second side are of a same width (W), and one of surfaces of the first type of the plurality of layers forms a third side of the right triangular prism.