Mounting for a ball lens on a bar code reader wand having a tape

Details Mounting for a ball lens on a bar code reader wand having a tape Mounting for a ball lens on a bar code reader wand having a tape

1990-01-31

1991-06-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Housings

250216, 350252, 235473, H01J 502

Patent

active

050216511

ABSTRACT:
In an optical reader a lens is mounted in and held in a mounting recess at a portion of the tip of a casing accommodating a light emitting element and a light receiving element, the recess continuing from a tapered bore through which light from the light emitting element passes. The casing is formed by resin molding, and the mounting recess has a flat bottom surface. Therefore, the apparatus can be manufactured at low cost while preventing the lens from becoming damaged during its press fitting into the recess, and also enabling the lens to be securely held therein.

REFERENCES:
patent: 3904277 (1975-09-01), Phillips et al.
patent: 3911270 (1975-10-01), Traub
patent: 4855582 (1989-08-01), Bayley

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