| US 7,538,960 B2 | ||
| Air bearing guided zoom lens for metrological measurements | ||
| Fred J. Schwab, Churchville, N.Y. (US); and Boris Gelman, Fairport, N.Y. (US) | ||
| Assigned to Quality Vision International, Inc., Rochester, N.Y. (US) | ||
| Filed on Mar. 14, 2006, as Appl. No. 11/374,736. | ||
| Prior Publication US 2007/0217037 A1, Sep. 20, 2007 | ||
| Int. Cl. G02B 7/02 (2006.01) | ||
| U.S. Cl. 359—822 [359/819; 359/823] | 21 Claims |
| 1. A zoom lens system, comprising:
an annular air bearing having an inner wall defining an inner diameter of the bearing, and an outer wall defining a bearing
surface through which air exits the bearing, the outer wall extending along substantially an entire length of the bearing
and defining an outer diameter of the bearing; and
a lens assembly mounted within the inner wall and disposed along the inner diameter.
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