Paper sheet handling apparatus
A paper sheet handling apparatus capable of effectively preventing a photodetector from malfunctioning due to external light is provided. The present invention is a paper sheet handling apparatus including a paper sheet handling port, a projector for emitting light within the paper sheet handling port, a photodetector for receiving the light emitted from the projector, and a light-shielding body that is formed along an optical path from the projector towards the photodetector and shields the photodetector against external light; wherein a projector-side end of the light-shielding body is formed to be retracted from an incident direction of the external light towards the photodetector.
1. A paper sheet handling apparatus comprising:
a paper sheet handling port;
a shutter arranged to open and close the paper sheet handing port;
a projector for emitting light within the paper sheet handling port;
a photodetector for receiving the light emitted from the projector;
a light-shielding body that is formed along an optical path from the projector towards the photodetector and shields the photodetector against external light; and
a controller configured to open or close the shutter based on receiving a detection signal from the photodetector,
wherein a projector-side end of the light-shielding body is formed to be retracted from an incident direction of the external light towards the photodetector.
2. The paper sheet handling apparatus according to claim 1 , wherein a front-end-side edge of the projector-side end relative to a travelling direction of the external light is further retracted than a base-end side of the projector-side end relative to a travelling direction of the external light.
3. The paper sheet handling apparatus according to claim 1 , wherein the projector-side end has a tapered face towards a substantially gravity direction.
4. The paper sheet handling apparatus according to claim 1 , wherein an angle of the projector-side end is smaller than an angled formed between the light-shielding body and a horizontal direction.
5. The paper sheet handling apparatus according to claim 1 , wherein grooves for reflecting the external light are formed in an inside surface of the light-shielding body.
6. The paper sheet handling apparatus according to claim 1 , wherein the light-shielding body is filled with a translucent member.
7. The paper sheet handling apparatus according to claim 1 , wherein a side face of the photodetector is covered with a light-shielding member.
8. The paper sheet handling apparatus according to claim 5 , wherein a side face of the photodetector is covered with a light-shielding member.
9. A paper sheet handling apparatus comprising:
a paper sheet handling port;
a shutter arranged to open and close the paper sheet handing port;
a projector for emitting light within the paper sheet handling port;
a photodetector for receiving the light emitted from the projector;
a light-shielding body that is formed along an optical path from the projector towards the photodetector and shields the photodetector against external light; and
a controller configured to open or close the shutter based on receiving a detection signal from the photodetector,
wherein grooves for reflecting the external light are formed in an inside surface of the light-shielding body.
10. The paper sheet handling apparatus according to claim 9 , wherein a side face of the photodetector is covered with a light-shielding member.
11. A paper sheet handling apparatus comprising:
a paper sheet handling port;
a shutter arranged to open and close the paper sheet handing port;
a projector for emitting light within the paper sheet handling port;
a photodetector for receiving the light emitted from the projector;
a light-shielding body that is formed along an optical path from the projector towards the photodetector and shields the photodetector against external light; and
a controller configured to open or close the shutter based on receiving a detection signal from the photodetector,
wherein a side face of the photodetector is covered with a light-shielding member.