Rolling ball element mount and barrel interface for zooming

Details Rolling ball element mount and barrel interface for zooming Rolling ball element mount and barrel interface for zooming

1991-12-11

1992-11-10

Ben, Loha

Optical: systems and elements

Lens

With variable magnification

359825, 359830, 362277, G02B 1500

Patent

active

051629488

ABSTRACT:
A rolling ball element mount and barrel interface comprises a barrel and an element mount sharing a common lateral (X, Y, Z) and angular (.THETA..sub.X, .THETA..sub.Y, .THETA..sub.Z) frame of reference located at a center of said barrel, the element mount adapted to fit inside the barrel axially along Z. A first component, including at least two rolling balls, is disposed between and adapted for contact with the element mount and the barrel for (i) constraining the element mount in lateral positions X and Y and angular positions .THETA..sub.X and .THETA..sub.Y and (ii) moveably coupling the element mount and the barrel in the axial direction. A second component, including at least one rolling ball, is disposed between and adapted for contact with the element mount and the barrel for (iii) constraining the element mount in angular position .THETA..sub.Z in cooperation with the first component and (iv) moveably coupling the element mount and the barrel in the axial direction. Lastly, a third component is selectively positioned between the element mount and barrel with respect to the first and second components for loading the element mount against the barrel to maintain the first and second components in contact with the element mount and the barrel, respectively, and for moveably coupling the element mount and the barrel in the axial direction.

REFERENCES:
patent: 2500050 (1950-03-01), Wittel
patent: 4439011 (1984-03-01), Mackmerth
patent: 4601539 (1986-07-01), Watanabe
patent: 4709311 (1987-11-01), Bornhorst
patent: 4812015 (1989-03-01), Iizuka et al.
patent: 4890132 (1989-12-01), Hana
patent: 5078472 (1992-01-01), Sugawara

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