Lens mounting technique

Details Lens mounting technique Lens mounting technique

1994-10-13

1996-04-23

Ben, Loha

Optical: systems and elements

Lens

With support

359820, G02B 702

Patent

active

055109357

ABSTRACT:
A lens mounting system (36) comprises a lens mount (53) having a cylindrical inner surface to define an internal cavity. An annular mounting member (46) projects into the cavity and has a fixed forward facing mounting surface (48). A mounting ring (52) threadedly engaged with the inner surface is selectively movable between a withdrawn position distant from the mounting member (46) and an advanced position adjacent thereto. A lens (40) for the system includes a forward facing optical surface (42), a rearward facing optical surface (44), and an annular mounting member (46) at an interface between the first optical surface (42) and the second optical surface (44). The annular mounting member (46) includes a first forward facing mounting surface (48) for flush mating engagement with the movable mounting surface (50) of the mounting ring (52) and a second rearward facing mounting surface (54) spaced from the first mounting surface for flush mating engagement with the fixed mounting surface (56) of the mounting member (46). As the mounting ring (52), which may be threadedly engaged with the lens mount (53), is moved from the withdrawn position toward the advanced position, the lens (40) becomes rigidly supported on the lens mount (53). All of the mounting surfaces are perpendicular to an optical axis of the system.

REFERENCES:
patent: 4723833 (1988-02-01), Yamada
patent: 5177641 (1993-01-01), Kobayashi et al.

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