Invention Grant
US07934858B2 Lighting lens and lighting device equipped with the same 有权
照明镜头和照明装置配备相同

Lighting lens and lighting device equipped with the same
Abstract:
A lighting lens can sufficiently suppress unevenness color and improve light use efficiency. This light lens has: first incidence surface 20 that is orthogonal to the optical axis; second incidence surface 21 that expands the radius toward the light emitting element 8 side; total reflection surface 22 that expands the radius toward the emitting side; first emission surface 24 that mainly emits light incident on first incidence surface 21, toward illuminated surface 18; and second emission surface 25 that emits light incident on a second incidence surface, toward illuminated surface 18, and forms second emission surface 25 such that positive power in second emission surface 25 is weaker than positive power of first emission surface 24.
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