Coupling of light from small lignt source for projection systems using parabolic reflectors

Coupling of light from small lignt source for projection systems using parabolic reflectors

  • CN 1,418,323 A
  • Filed: 03/12/2001
  • Published: 05/14/2003
  • Est. Priority Date: 03/22/2000
  • Status: Abandoned Application
First Claim
Patent Images

1. image projection device comprises:

  • An image source;

    AndIlluminate the optical devices of above-mentioned image source, described optical devices comprise;

    Electromagnetic radiation source,The target that at least a portion electromagnetic radiation of sending with described electromagnetic radiation source is illuminated,First reverberator, it comprises the parabolic part of at least one rotation, and described first reverberator has an optical axis and first focus on described optical axis, and described source is positioned near described first focus, make the part electromagnetic energy pool the sight ray parallel with described optical axis, andSecond reverberator, it comprises the parabolic part of at least one rotation, described second reverberator has an optical axis and second focus on described optical axis, described target is positioned near described second focus, described second reverberator is placed and is orientated with respect to described first reverberator so that receive the above-mentioned major part of sighting ray of electromagnetic energy, the above-mentioned ray of sighting of described second reverberator guiding is towards above-mentioned targetWherein above-mentionedly sight reverberator and above-mentioned focusing reflector has roughly the same size and dimension, and roughly be to each other the optics symmetry towards, by the ray of each radiation of above-mentioned surface portion reflection of sighting reverberator by the respective surfaces position of above-mentioned focusing reflector towards above-mentioned target reflection.

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