Reflecting apparatus for backlight module of flat panel display
A reflecting apparatus for a backlight module of a plane display is disclosed. The backlight module includes a light guide distal from the reflecting apparatus, and a plurality of diffusers. The apparatus comprises a light source, a reflector, and two substantially parallel sets of partially overlapped light deflectors wherein a gap exists between either two adjacent light deflectors of the same set or one light deflector and the reflector. A portion of emitted light is directed to the light guide after being reflected from the reflector. The remaining portion of light is directed to the light guide either after it has been deflected by the light deflectors or deflected by the light deflectors prior to being reflected by the reflector. Parallel light received at the light guide is deflected to the plane display as a backlight source of the plane display after passing the diffusers.
1. A reflecting apparatus for backlight module of plane display, the backlight module including a light guide distal from the reflecting apparatus and a plurality of diffusers, said reflecting apparatus comprising:
a light source;
a reflector having a concave surface and a focus on the light source; and
two substantially parallel sets of a plurality of light deflectors at one side of the reflector wherein a gap exists between either two adjacent light deflectors of the same set or one light deflector and the reflector,
wherein light emitted by the light source is directed to the light guide after being reflected by the light reflector, wherein a portion of the light reflected by the light reflector is deflected by the light deflectors prior to being reflected by the reflector, and wherein light received at the light guide is deflected to the plane display as a backlight source of the plane display after passing the diffusers.
2. The reflecting apparatus as claimed in claim 1 , wherein a cross section of the reflector is a parabola.
3. The reflecting apparatus as claimed in claim 1 , wherein the light reflector is a concave mirror of either a cone or cylinder.
4. The reflecting apparatus as claimed in claim 1 , wherein light is substantially parallel directed to the light guide.
5. The reflecting apparatus as claimed in claim 1 , wherein each of the light deflectors is partially overlapped by one or two adjacent light deflectors of the same set.
6. The reflecting apparatus as claimed in claim 1 , wherein the light source is a CCFL (cold cathode fluorescent lamp) or LED (light emitting diode).