Optical: systems and elements – Lens – With viewed object support
Patent
1994-10-28
1995-08-29
Ben, Loha
Optical: systems and elements
Lens
With viewed object support
356 30, 84464R, G02B 2702, G01N 2187
Patent
active
054465958
ABSTRACT:
A device for detecting loose stones in a jewelry setting includes a pedestal against which a ring or other jewelry item is lightly held, and a vibrator for causing vibration of the pedestal and hence of the jewelry item held against it. A large magnifying lens is positioned a few inches above the pedestal so that the owner of the jewelry item may observe the stones when the setting is vibrated. This enables a jeweler's customer to see loose stones themselves without relying upon the opinion of the jeweler. The vibrator is a motor contained within a housing, and the pedestal extends upwardly through an aperture formed in a top wall of the housing. A linkage means interconnects the output shaft of the motor and the pedestal in such a way as to cause vibration of the pedestal. A light mounted above the pedestal illuminates it, and separate switch actuators are provided for the actuation of the motor and the light. The magnifying lens is spaced apart from the pedestal by a spacer wall having a height substantially equal to the focal length of the magnifying lens.
REFERENCES:
patent: 4158982 (1979-06-01), Chusid
patent: 5260763 (1993-11-01), Yamashita
Ben Loha
Miller Stanley M.
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