Mounting for a sapphire ball in a bar code reader wand tip

Details Mounting for a sapphire ball in a bar code reader wand tip Mounting for a sapphire ball in a bar code reader wand tip

1988-06-15

1989-08-08

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

048555827

ABSTRACT:
A mounting nest for the sapphire ball at the tip of a bar code reader wand has a hemispherical recess that contacts the surface of the sapphire ball to hold the ball securely. The mounting nest is molded from a material having a relatively high index of refraction so the optical effect of the surface of the ball in contact with the recess component can be effectively neutralized. The mounting nest eliminates leakage paths around the sapphire ball for dust, ESD or other contaminants to the sensor and circuitry inside the wand.

REFERENCES:
patent: 3784794 (1974-01-01), Allais
patent: 3916184 (1975-10-01), Turner et al.
patent: 4682016 (1987-07-01), Pitts

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