| 摘要 |
A symbol reading device has a casing formed with an opening which defines a symbol reading area. An image receiving element, such as a CCD, is provided within the casing. A portion of the casing, on a surface opposite to the symbol reading area, is formed with a window portion at which an optical element, which reflects light within a predetermined wavelength range, and transmits other light is provided. Accordingly, a symbol facing the opening is observable through the optical element.
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