Invention Grant
- Patent Title: Luminaire including upper and lower dome-shaped optical elements
- Patent Title (中): 灯具包括上下圆顶形光学元件
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Application No.: US12327527Application Date: 2008-12-03
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Publication No.: US08282248B1Publication Date: 2012-10-09
- Inventor: Jonathan Burt
- Applicant: Jonathan Burt
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Main IPC: F21V7/09
- IPC: F21V7/09

Abstract:
A direct and indirect luminaire has a stem, a generally dome shaped upper optical element, and a generally dome shaped lower optical element. The upper optical element is situated about a lamp axis and has a top that surrounds the stem and a reflective exterior surface that surrounds the stem and diverges away from the top toward a base of the upper optical element. The lower optical element is situated about the lamp axis and has a top with an uplight opening therethrough and a reflective interior surface that diverges away from the upper optical element toward a base of the lower optical element that has a downlight opening therethrough.
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