| 摘要 |
An illuminating device for hand-held bar code reader that installs a light emitting device next to a reading window of a bar code reader. The light projection direction of the light emitting device is parallel to a scanning light emitted from the interior of the reading window. The light emitting device is controlled by a switch. The switch is a two-stage press-type switch. When the switch is pressed into a first stage, the light emitting device is activated to illuminate. When the switch is pressed into a second stage, the scanning light is emitted for bar code reading. Thereby, the bar code can be read in an environment with insufficient light.
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