Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177761 | LED with light extractor | David G. Pelka, Roland Winston | 2001-01-23 |
| 5924788 | Illuminating lens designed by extrinsic differential geometry | — | 1999-07-20 |
| 5926320 | Ring-lens system for efficient beam formation | John M. Popovich | 1999-07-20 |
| 5806955 | TIR lens for waveguide injection | David G. Pelka | 1998-09-15 |
| 5757557 | Beam-forming lens with internal cavity that prevents front losses | Vladimir Medvedev | 1998-05-26 |
| 5676453 | Collimating TIR lens devices employing fluorescent light sources | David G. Pelka | 1997-10-14 |
| 5655832 | Multiple wavelength light processor | David G. Pelka | 1997-08-12 |
| 5613769 | Tir lens apparatus having non-circular configuration about an optical axis | David G. Pelka | 1997-03-25 |
| 5577492 | Collimating TIR lens with focusing filter lens | David G. Pelka | 1996-11-26 |
| 5577493 | Auxiliary lens to modify the output flux distribution of a TIR lens | David G. Pelka | 1996-11-26 |
| 5404869 | Faceted totally internally reflecting lens with individually curved faces on facets | David G. Pelka, John M. Popovich | 1995-04-11 |
| 4337759 | Radiant energy concentration by optical total internal reflection | John M. Popovich, David G. Pelka | 1982-07-06 |