Light-guide module having light shielding structure
View Patent ↗A light-guide module is used for guiding the incident light to a process device. The light-guide module includes an entrance and a plurality of reflected mirrors. The entrance is provided for entering the signal light. The reflected mirrors are arranged as a predetermined light route for guiding out the signal light. One of the reflected mirrors includes a light shielding structure for preventing the noise reflecting from the reflected mirror so as to prevent the noise light from entering the image sensing device and to prevent the image sensing device to process the noise.
1. A scanning apparatus for scanning an object, comprising:
a light source for generating light to project to the object; and
a light-guide module for transmitting light reflected from the object, the light-guide module including:
at least one reflected mirror, including a first reflected mirror, to reflect the light reflected from the object to an image sensing device according to a preset light route; and
a light shielding structure located at a reflecting surface of the first reflected mirror to inhibit noise signals and the light reflected from the object that is not reflected according to the preset light route from reflecting to the image sensing device;
wherein the image sensing device transforms the light transmitted by the light-guide module to corresponding output signals.
2. The scanning apparatus of claim 1 , wherein the image sensing device is a charge-coupled device (CCD).
3. The scanning apparatus of claim 1 , wherein the image sensing device is a Complementary Metal Oxide Semiconductor (CMOS).
4. The scanning apparatus of claim 1 , wherein the light shielding structure is formed on the first reflected mirror by a black printing process to prevent the first reflected mirror from reflecting the noise signals.
5. The scanning apparatus of claim 1 , wherein the light shielding structure is formed by bonding a piece of black paper to the first reflected mirror to prevent the first reflected mirror from reflecting the noise signals.
6. A scanning apparatus for scanning an object, comprising:
a light source for generating light to project to the object; and
a light-guide module for transmitting light reflected from the object, the light-guide module including:
at least one reflected mirror, including a first reflected mirror, to reflect the light reflected from the object to an image sensing device according to a preset light route; and
a light shielding structure located at a reflecting surface of the first reflected mirror to inhibit noise signals and the light reflected from the object that is not reflected according to the preset light route from reflecting to the image sensing device;
wherein the image sensing device transforms the light transmitted by the light-guide module to corresponding output signals;
wherein the light shielding structure is a black covering sleeve matching a contour of the first reflected mirror for coupling on the reflected mirror.
7. The scanning apparatus of claim 6 , wherein the black covering sleeve is made from rubber.
8. A light-guide module for directing a signal light to an image sensing device, the light-guide module comprising:
an entrance to receive projection of the signal light;
a plurality of reflected mirrors positioned on a preset route to direct the signal light according to the preset route to the image sensing device; and
a light shielding structure positioned at a reflecting surface of at least one of the reflected mirrors to inhibit a noise signal from reflecting to the image sensing device and to inhibit a portion of the signal light not traveling on the preset light route from reflecting to the image sensing device;
wherein the light shielding structure is a black covering sleeve matching a contour of the at least one reflected mirror for coupling on the reflected mirror.
9. The light-guide module of claim 8 , wherein the image sensing device is a charge-coupled device (CCD).
10. The light-guide module of claim 8 , wherein the image sensing device is a Complementary Metal Oxide Semiconductor (CMOS).
11. The light-guide module of claim 8 , wherein the black covering sleeve is made from rubber.
12. The light-guide module of claim 8 , wherein the light-guide module is used in scanning apparatus to direct light to a scanning object.
13. The light-guide module of claim 8 , wherein the light-guide module is used in a multi-functional peripheral to direct light to an object to perform image processing.
14. A scanning apparatus for scanning an object; comprising:
a light source for generating light to project to the object;
a plurality of mirrors that form a light route to an image sensing device, the plurality of mirrors including a first mirror, wherein the plurality of mirrors direct light reflected from the object to the image sensing device according to the light route; and
means for inhibiting noise signals and light that does not follow the light route from reflecting to the image sensing device, the means for inhibiting positioned at a reflecting surface of the first mirror;
wherein the means for inhibiting further comprises a black covering sleeve matching a contour of the first mirror for coupling on the first mirror.
15. The scanning apparatus of claim 14 , wherein the black covering sleeve is made from rubber.
16. The scanning apparatus of claim 14 , wherein the means for preventing is formed on a reflecting surface of the first mirror.