Scanner having a self collection light source
View Patent ↗A scanner using a self-collection light source, is composed of a light source either with its tube walls coated with a layer of total reflective material, or a tube wall made to have a converging lens-like wall, so that the light source itself has built-in light converging ability. The original scattered light is first collected into a light beam before emitted to the scan line on the document. Thus, the light flux on the scan line can be substantially enhanced. Furthermore, by including the auxiliary light sources on both sides of this kind of main light source with self-collection capability, associating with a light intensity adjusting control circuitry, The light flux density on the two sides of the main light source is improved, so that it effectively improves the flux uniformity of light incident on the light detector.
1. A scanner comprising:
an optical scanning chassis having a light source, wherein the light source comprises:
a primary light source comprising a tube having a first end and a second end, wherein the tube includes a tube wall applied with a total reflective material, such that an opening for emitting a light beam collected from scattered light is formed;
a first and a second auxiliary light source, disposed proximate to the first and second end respectively of the primary light source; and
a transmission assembly for supplying driving power to the optical scanning chassis.
2. The scanner of claim 1 , wherein the total reflective material is coated on an outer wall of the tube of the primary light source.
3. The scanner of claim 1 , wherein the total reflective material is coated on an inner wall of the tube of the primary light source.
4. The scanner of claim 1 , wherein the first auxiliary light source and the second auxiliary light source each comprise a tube at least partially coated with total reflective material.
5. The scanner of claim 4 , further comprising a controlling circuitry, adapted to adjust a light output intensity of the first and the second auxiliary light sources.
6. A scanner, comprising:
an optical scanning chassis, having a light source, comprising:
a primary light source comprising a tube having a tube wall, wherein the tube wall includes a converging lens wall portion, adapted to collect scattered light and emit a light beam;
a first and a second auxiliary light source, disposed proximate to the first and second end respectively of the primary light source; and
a transmission assembly for supplying driving power to the optical scanning chassis.
7. The scanner of claim 6 , wherein the first auxiliary light source and the second auxiliary light source each comprise a tube having a converging lens wall portion.
8. The scanner of claim 7 , further comprising a controlling circuitry, adapted to adjust a light output intensity of the first and the second auxiliary light sources.
9. A light source adapted for use in a scanner, the light source comprising:
a primary light source comprising a tube having a tube wall, a first end, a second end, and a center portion, wherein the tube wall is applied with a total reflective material such that an opening for emitting a light beam is formed, wherein the total reflective material applied proximate to the first and second end comprises a total reflective material having a higher density than the material applied to the center portion of the tube wall; and
a plurality of electrodes, disposed at both sides of the tube.
10. The light source of claim 9 , wherein the total reflective material is applied to an outer side of the tube wall.
11. The light source of claim 9 , wherein the total reflective material is applied to interior side of the tube wall.
12. A method of forming a light source for a scanner, comprising:
applying total reflective material on a tube wall of the light source, wherein the light source comprises a tube having a tube wall, a first end, a second end, and a center portion, wherein the total reflective material is applied to the tube wall such that an opening for emission of a light beam is formed, and wherein the total reflective material applied proximate to the first and second end comprises a total reflective material having a higher density than the material applied to the center portion of the tube wall; and
disposing an electrode on each of said first and second ends.
13. The method of claim 12 , wherein the total reflective material is applied to an outer side of the tube wall.
14. The method of claim 12 , wherein the total reflective material is applied to interior side of the tube wall.
15. An apparatus, comprising:
an optical scanning chassis having a light source, wherein the light source comprises:
a primary light source comprising a tube having a first end and a second end, wherein the tube includes a tube wall applied with a reflective material, such that an opening for emitting a light beam collected from scattered light is formed; and
a first and a second auxiliary light source, disposed proximate to the first and second end respectively of the primary light source.
16. The apparatus of claim 15 , wherein the reflective material is coated on an outer wall of the tube of the primary light source.
17. The apparatus of claim 15 , wherein the reflective material is coated on an inner wall of the tube of the primary light source.
18. The apparatus of claim 15 , wherein the first auxiliary light source and the second auxiliary light source each comprise a tube at least partially coated with reflective material.
19. A scanner light source, comprising:
a primary light source comprising a tube having a first end and a second end, wherein the tube includes a tube wall applied with a total reflective material, such that an opening for emitting a light beam collected from scattered light is formed; and
a first and a second auxiliary light source, each comprising a tube at least partially coated with reflective material, wherein the first and second auxiliary light sources are adapted to be disposed on the scanner proximate to the first and second end respectively of the primary light source.
20. The scanner light source of claim 19 , wherein the total reflective material is coated on an outer wall of the tube of the primary light source.
21. The scanner light source of claim 19 , wherein the total reflective material is coated on an inner wall of the tube of the primary light source.