Optical: systems and elements – Extended spacing structure for optical elements
Patent
1990-04-25
1991-10-15
Henry, Jon W.
Optical: systems and elements
Extended spacing structure for optical elements
128 4, 359513, 359823, 359903, G02B 704, G02B 708, G02B 2324
Patent
active
050569023
ABSTRACT:
A lens surrounded by a protective chamber is focused by utilizing a magnetic field to adjust the position of the lens within the chamber. By using a magnetic field to adjust the lens position, it is not necessary to pass a mechanical device through the surface of the chamber, thereby allowing the chamber to be completely sealed to prevent contaminants from contacting the lens.
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Chinnock Randal B.
Dionne Norman J.
Henry Jon W.
Smith & Nephew Dyonics Inc.
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