BUILT-IN LIGHTING UNIT Russian patent published in 2015 - IPC F21V5/00 F21S8/12 

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. The built-in lighting unit (1A, 1B, 1C, 1D, 1E) comprises optical arrangement (2, 3), the first light source (S₁) to generate the first light beam (L₁), the first collimator (C₁) to guide the first light beam (L₁) to the optical arrangement (2, 3); the second light source (S₂) to generate the second light beam (L₂), the second collimator (C₂) to guide the second light beam (L₂) to the optical arrangement (2, 3); at that the optical arrangement is realised so that it may manipulate the first and second light beams (L₁, L₂) generating the first outgoing light beam (B_LO) and the second outgoing light beam (B_HI) so that the first outgoing light beam (B_LO) and the second outgoing light beam (B_HI) are joined partially in overlay area (44) in projection plane (4) placed at a preset distance from the built-in lighting unit (1A, 1B, 1C, 1D, 1E). The invention also describes an automobile head lamp unit (12) that contains the built-in lighting unit (1A, 1B, 1C, 1D, 1E).

EFFECT: increased lighting efficiency of low-beam and high-beam light and increased safety for a driver.

13 cl, 10 dwg