Invention Grant
US5198648A Code sensor with multi-faceted reflector for sensing plural image
distances
失效
用于感测平面图像距离的多面反射器的传感器
- Patent Title: Code sensor with multi-faceted reflector for sensing plural image distances
- Patent Title (中): 用于感测平面图像距离的多面反射器的传感器
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Application No.: US634638Application Date: 1990-12-27
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Publication No.: US5198648APublication Date: 1993-03-30
- Inventor: Robert H. Hibbard
- Applicant: Robert H. Hibbard
- Applicant Address: NY Rochester
- Assignee: Eastman Kodak Company
- Current Assignee: Eastman Kodak Company
- Current Assignee Address: NY Rochester
- Main IPC: G06K7/10
- IPC: G06K7/10
Abstract:
A bar code scanner having a lens, a reflector, a sensor, and a detection unit. The lens is arranged to focus an image of a bar code to be scanned along an image path. The reflector is angled obliquely to the image path so as to reflect images at an angle to the image path. The reflector has reflector surface shaped so as to provide a plurality of reflected images of the scanned bar code, with one of the reflected image being an in-focus image and a remainder of the reflected images being out-of-focus images. The sensor is in the image path and simultaneously senses the plurality of reflected images and provides a sensor output signal corresponding to the sensed images. The detection unit is coupled to the sensor and decodes the sensor output signal and provides a bar code output signal that corresponds to the scanned bar code.
Public/Granted literature
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