Illuminating apparatus including a plurality of light sources that generate primary color light components

• US 6,523,977 B2
• Filed: 02/20/2001
• Issued: 02/25/2003
• Est. Priority Date: 02/20/2001
• Status: Expired due to Fees

• Current Assignee: Digimedia Technology Co., Ltd.
• Original Assignee: Prokia Technology Co., Ltd.
• Inventors: Lee, Shih-Ping, Chuang, Fu-Ming, Tsai, Han-Wen, Chan, Sheng-Hsiung
• Primary Examiner(s): Sember, Thomas M.
• Assistant Examiner(s): Amarantides, John
• Application Number:
  US09/789,229
• Publication Number:
  US 20020114157A1
• Time in Patent Office: 735 Days
• Field of Search: 362/231, 362/259, 362/268, 362/297, 362/800, 362/296, 362/341, 362/346
• US Class Current: 362/231
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 17/00 Systems with reflecting surfaces, with or without refracting elements
• CPC Class Codes: G02B 27/0983 being curved
• CPC Class Codes: G02B 27/0994 Fibers, light pipes optical fibers per se G02B6/02
• CPC Class Codes: G02B 27/123 The splitting element being a lens or a system of lenses, including arrays and surfaces with refractive power
• CPC Class Codes: G02B 27/143 using macroscopically faceted or segmented reflective surfaces
• CPC Class Codes: G02B 6/0006 Coupling light into the fibre in general G02B6/4298
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An illuminating apparatus includes a plurality of light sources that generate a plurality of primary color light components, a reflector unit for receiving the primary color light components from the light sources, and an integrator having an input side to receive the primary color light components reflected by the reflector unit.

Claims

1. An illuminating apparatus comprising:

a plurality of light sources that generate a plurality of primary color light components,

a reflector unit for receiving the primary color light components from said light sources, said reflector unit including a first parabolic reflector having a reflecting surface and a first focal point, and a second parabolic reflector having a second reflecting surface that confronts said reflecting surface of said first parabolic reflector and a second focal point;

a curved base board having a concave mounting surface that confronts said reflecting surface of said first parabolic reflector, that has said light sources mounted thereon, and that has a third focal point coincident with said first focal point, said reflecting surface of said first parabolic reflector reflecting the primary color light components in parallel toward said second reflecting surface; and

an integrator having an input side to receive the primary color light components reflected by said reflector unit, said input side of said integrator being coincident with said second focal point.

2. The illuminating apparatus of claim 1, wherein said light sources include a plurality of light emitting diodes.

3. The illuminating apparatus of claim 1, wherein said light sources include a plurality of laser diodes.