Optical: systems and elements – Lens – With variable magnification
Patent
1993-11-03
1995-08-29
Epps, Georgia Y.
Optical: systems and elements
Lens
With variable magnification
359699, 359700, 359826, G02B 702
Patent
active
054465931
ABSTRACT:
A lens advancing mechanism which includes a stationary barrel having a linear guide groove arranged parallel to an optical axis, a ring rotatably coupled on the outer circumferential surface of the fixed barrel and a lens supporting member having a guide portion which is received in the linear guide groove. The ring has at least one lead groove formed on its inner surface and the guide portion has at least one protrusion which is received in the lead groove of the ring. When the ring is rotated, the lens supporting member is moved along the linear guide groove.
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Hamasaki Takuji
Okura Zenichi
Asahi Kogaku Kogyo Kabushiki Kaisha
Epps Georgia Y.
Mack Ricky
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