Patent ID: 9122000
Filing Date: 2015-09-01
Classification: A01G,F21V,F21Y,G02B,H01L

Abstract:
1. An illuminator comprising: a light source; and a lens sheet that is arranged on an optical axis of the light source and that has a plurality of prisms, wherein the light source is composed of: (i) a luminous element configured to emit lights and (ii) phosphors that irradiate with the lights emitted from the luminous element, the plurality of prisms includes at least some prisms that each have a focal distance that is different from that of adjacent prisms of the plurality of prisms, the plurality of prisms of the lens sheet includes at least (i) a plurality of refraction prisms with certain refraction functions or (ii) a plurality of reflection prisms with certain reflective functions, and at least (i) some light refracted by the plurality of prisms has a different angle than other light refracted by the plurality of prisms or (ii) at least some light reflected by the plurality of prisms has a different angle than other light reflected by the plurality of prisms.