William A. Parkyn
62Patents
33h-index
23Co-inventors
88Inventor score
Filing activity: Feb 27, 1981 → Dec 5, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6582103B1 | Lighting apparatus | Physics | 316 | Expired |
| US5806955A | TIR lens for waveguide injection | Emerging Cross-Sectional Technologies | 205 | Expired |
| US5655832A | Multiple wavelength light processor | Emerging Cross-Sectional Technologies | 190 | Expired |
| US7286296B2 | Optical manifold for light-emitting diodes | Electricity | 186 | Expired |
| US7021797B2 | Optical device for repositioning and redistributing an LED's light | Mechanical Engineering; Lighting; Heating | 166 | Expired |
| US6560038B1 | Light extraction from LEDs with light pipes | Emerging Cross-Sectional Technologies | 160 | Expired |
| US6637924B2 | Strip lighting apparatus and method | Mechanical Engineering; Lighting; Heating | 147 | Expired |
| US5404869A | Faceted totally internally reflecting lens with individually curved faces on facets | Emerging Cross-Sectional Technologies | 146 | Expired |
| US5757557A | Beam-forming lens with internal cavity that prevents front losses | Mechanical Engineering; Lighting; Heating | 139 | Expired |
| US4337759A | Radiant energy concentration by optical total internal reflection | Emerging Cross-Sectional Technologies | 139 | Expired |
| US7559672B1 | Linear illumination lens with Fresnel facets | Mechanical Engineering; Lighting; Heating | 135 | Active |
| US5924788A | Illuminating lens designed by extrinsic differential geometry | Emerging Cross-Sectional Technologies | 134 | Expired |
| US6273596A | Illuminating lens designed by extrinsic differential geometry | Mechanical Engineering; Lighting; Heating | 127 | Expired |
| US5676453A | Collimating TIR lens devices employing fluorescent light sources | Emerging Cross-Sectional Technologies | 115 | Expired |
| US7006306B2 | Circumferentially emitting luminaires and lens-elements formed by transverse-axis profile-sweeps | Electricity | 105 | Expired |
| US7329029B2 | Optical device for LED-based lamp | Electricity | 93 | Expired |
| US5577492A | Collimating TIR lens with focusing filter lens | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5926320A | Ring-lens system for efficient beam formation | Mechanical Engineering; Lighting; Heating | 91 | Expired |
| US6924943B2 | Asymmetric TIR lenses producing off-axis beams | Physics | 91 | Expired |
| US7273299B2 | Cylindrical irradiance-mapping lens and its applications to LED shelf-lighting | Mechanical Engineering; Lighting; Heating | 86 | Expired |
| US6603243B2 | LED light source with field-of-view-controlling optics | Emerging Cross-Sectional Technologies | 83 | Expired |
| US8016443B2 | Remote-phosphor LED downlight | Mechanical Engineering; Lighting; Heating | 79 | Active |
| US6177761A | LED with light extractor | Emerging Cross-Sectional Technologies | 77 | Expired |
| US8075147B2 | Optical device for LED-based lamp | Electricity | 77 | Active |
| US6784603B2 | Fluorescent lighting apparatus | Physics | 76 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.