| Patent Number |
Title Of Patent |
Date Issued |
| 6219182 |
Multiple magnification stereo video telescope objective lens system |
April 17, 2001 |
| A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and two lens pairs forming a stereo lens set. A rotatable dual telescope is disposed between the two doublets and the stereo lens pairs, establishing a Galilean telescope associat |
| 5673147 |
Stereo video endoscope objective lens systems |
September 30, 1997 |
| A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and two identical half-diameter ball lenses. The full-diameter doublets collimate object points, imaging object points to infinity. The full-diameter doublets present equal-angle |
| 5191203 |
Stereo video endoscope objective lens system |
March 2, 1993 |
| A stereoscopic objective lens system for video endoscopes and borescopes includes a full diameter collimator lens systems and a pair of half-diameter stereo lens systems. The lens systems can be formed of doublet lenses or a combination of singlet and doublet lenses, or of gradient i |
| 5122650 |
Stereo video endoscope objective lens system |
June 16, 1992 |
| A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and a double set of two half-diameter identical doublets. The full-diameter doublets collimate object points, imaging object points to infinity. The large collimator doublets pres |
| 5097359 |
Endoscope relay lens configuration |
March 17, 1992 |
| Relay lenses for endoscopy include an axially symmetrical three-part optical component having a thin symmetrical negative element interposed between identical, substantially spherical outside elements; and an axially symmetrical five-part optical component in which the three-part com |
