Patent ID: 11940641
Assignee: LUMUS LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G | IPC F  G

Claim 18:
19. An apparatus comprising:
a light pipe (600) including at least:
(i) a first optical structure (P1) having a first refractive index (η1), an input surface (S01) at a proximal end of said lightpipe (600) through which light from a light source enters said light pipe (600), and a second surface (S12), and
(ii) a second optical structure (P2) having a second refractive index (η2) not equal to said first refractive index, a third surface (S21), and an output surface (S23) at a distal end of said lightpipe (600) through which light exits said light pipe (600), wherein said output surface (S23) is oblique to said input surface (S01),

said light pipe (600) having a longitudinal axis (R1) parallel to a long dimension (606) of said first optical structure (P1) in a direction between said input surface (S01), and said second surface (S12), and
an interface (620) between said second surface (S12) and said third surface (S21) being oblique to said longitudinal axis (R1) of said light pipe (600) such that an input light ray (L0) to said input surface (S01) injected parallel to said longitudinal axis (R1) is output from said output surface (S23) as an output light ray (L3) non-parallel to said input light ray (L0).