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US 2019/0219247 A1Published application
Light projection device for a light signaling function
AssigneeObsta
InventorLaurent MAYOLLET
Life of this patent
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Abstract
The invention relates to a projector (1) for light signalling, comprising—a conical mirror (16) having a truncated-cone shape (6), a plurality of laser diodes (5) emitting a light intensity towards the conical mirror (16), the inclination of the laser diodes (5) with respect to the conical surface (9) is such that the light projector (1) reflects the light intensity of the plurality of diodes (5) perpendicular to the axis (Z) of the cone, such that the conical mirror (16) reflects all of the light intensity of the plurality of laser diodes (5).
Claims20
A light projection device for a light signaling function (1), comprising
- a conical mirror (16) having a truncated cone shape (6) with a symmetry of revolution about a cone axis (Z),
- a plurality of laser diodes (5) disposed around the cone axis (Z) and emitting a light intensity toward the conical mirror (16),
- the conical mirror (16) having furthermore a first end edge and a second end edge perpendicular to the cone axis (Z), the first end edge of the conical mirror (16) being a circle (8) having a first radius and the second end edge of the conical mirror (16) being a circle (7) having a second radius (27), less than the first radius (28), the second edge being turned toward the laser diodes (5), the inclination of the laser diodes with respect to the conical surface (9) is such that the light projection device (1) reflects the light intensity from the plurality of diodes (5) perpendicularly to the axis of the cone (Z), the laser diodes (5) being disposed at distances from the axis of the cone (Z) in the range between the first radius (28) and the second radius (27),
- in such a manner that the conical mirror reflects substantially all the light intensity from the plurality of laser diodes.
1 more element
Dependencies are inferred from the claim text.