Laser scanner engine with folded beam path

Details Laser scanner engine with folded beam path Laser scanner engine with folded beam path

1989-01-23

1990-10-16

Arnold, Bruce Y.

Registers

Coded record sensors

Particular sensor structure

350622, 235467, G02B 2610, G06K 710

Patent

active

049629808

ABSTRACT:
A scanner module for use in a laser scanning system. The module is self contained within a housing having a window, and comprises a source of laser light, a mechanism for sweeping the laser beam within the housing to produce a scan pattern comprising at least one line, a reflective beam folding system for projecting the pattern out of the window and onto an object, such as a bar code, and a system for receiving light reflected off the object to convert the reflectd light into an electrical signal indicative thereof. The beam sweeping mechanism comprises an oscillating reflective member. The reflective beam folding system comprises at least two mirrors disposed generally opposite each other to receive the beam of light from the beam sweeping mechanism and to fold its path by reflecting it back and forth within the housing. The module may be connected to a handle or some other member, e.g., a data terminal, including a control system for actuating the module and for decoding the electrical signal provided by the module.

REFERENCES:
patent: D281977 (1985-12-01), Sklaroff
patent: 4349843 (1982-09-01), Lackmann et al.
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4409470 (1983-10-01), Shepard et al.
patent: 4460120 (1984-07-01), Shepard et al.
patent: 4575625 (1986-03-01), Knowles
patent: 4607156 (1986-08-01), Koppenaal et al.
patent: 4713532 (1987-12-01), Knowles
patent: 4760248 (1988-07-01), Swartz et al.
patent: 4762994 (1988-08-01), Byerly et al.

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