US 9,470,882 B2
OPTICAL ARRANGEMENT FOR A SOLID-STATE LAMPGeneral
US 9,470,882 B2
OPTICAL ARRANGEMENT FOR A SOLID-STATE LAMP
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Stephen F Husar
Art Unit:
2875 Optics
Agent:
Inventors:
Dong Lu
Assignee:
INTENSITY LIGHTING COMPANY, LLC
Priority:
04/25/11
Filed:
04/25/11
Granted:
10/18/16
Expiration:
07/02/34
Abstract
An optical arrangement for a solid-state lamp is disclosed. A highly reflective secondary reflector is located adjacent to but not in contact with an optical element. In some embodiments, the reflector presents a white, diffuse reflective surface. A secondary reflector with a specular reflective surface can also be used. The secondary reflector can be made of various commercially available materials; for example, MCPET or polycarbide resin, and the arrangement can be used with an LED light source. In some example embodiments, the optical element and the highly reflective secondary reflector each have a plurality of lobes and the arrangement is suitable for an MR16 halogen lamp replacement. In other example embodiments, the highly reflective secondary reflector includes a plurality of recesses corresponding to a plurality of optical elements, and the arrangement is suitable for a PAR incandescent bulb replacement.
Cooperative Patent Classification (CPC)
F21F21V7/0091F21K9/233F21Y2115/10F21VG02B19/0066G02BY10T29/49117Y10T