Document scanner with light-focusing device
View Patent ↗A document scanner with a light focusing device downward formed on a document support panel is disclosed. The document scanner is provided with a chassis including a light source and an image sensing device. A scanning window made of light-transmitting material is formed in an area of the document support panel. A driving roller is arranged in a document feeder for driving a document to be scanned through the scanning window. Light emitted from the light source transmits through the scanning window toward the document and is reflected by the document toward the image sensing device, The document support panel forms a convex projection on a bottom surface thereof. The projection confronts the light source for focusing the light onto the document. Preferably, the projection includes an extended section from the bottom surface of the document support panel and forming a convex end surface confronting the light source. A light collecting rim is further downward fanned on the document support panel and around the extended section in a direction toward the light source.
1. An apparatus, comprising:
a panel positioned between a light source and a document, wherein the panel has a first surface facing the light source and a second surface facing the document; and
a light-focusing device formed on the first surface of the panel, wherein the light-focusing device comprises a convex surface configured to receive the light emitted from the light source, and wherein the light-focusing device is configured to focus the light emitted from the light source through the panel and onto the document.
2. The apparatus of claim 1 , wherein the light-focusing device comprises a convex projection integrally formed with the panel.
3. The apparatus of claim 1 , wherein the light-focusing device comprises:
a downwardly extended section, integrally formed on the panel toward the light source, comprising an end; and
a convex projection, integrally formed on the end of the extended section, comprising the convex surface facing the light source.
4. The apparatus of claim 1 , wherein the light-focusing device comprises:
a downwardly extended section, integrally formed on the panel toward the light source, comprising an end;
a convex projection, integrally formed on the end of the extended section, comprising the convex surface facing the light source; and
a light-collecting rim downwardly formed on the panel and around the extended section in a direction toward the light source.
5. The apparatus of claim 1 , further comprising a bottom panel coupled to at least a portion of the second surface of the panel, wherein the bottom panel is configured to define a scanning window that allows light emitted from the light source to pass through the scanning window and onto the document.
6. The apparatus of claim 1 , wherein the light-focusing device is configured to guide the light emitted from the light source toward the document.
7. The apparatus of claim 1 , wherein the light-focusing device is configured to collect and concentrate light emitted from the light source toward the document.
8. An apparatus, comprising:
means for allowing light to transmit through a substantially planar panel; and
means for focusing light emitted from a light source through the substantially planar panel and onto a document, wherein the means for focusing is formed on a first surface of the panel and comprises a convex surface that at least partially protrudes from the first surface toward the light source, and wherein the means for focusing is configured to receive the light emitted from the light source with the convex surface.
9. The apparatus of claim 8 , wherein the means for focusing comprises a convex projection integrally formed with the panel.
10. The apparatus of claim 8 , wherein the means for focusing comprises:
a downwardly extended section, integrally formed on the panel toward the light source, comprising an end; and
a convex projection, integrally formed on the end of the extended section, comprising the convex surface facing the light source.
11. The apparatus of claim 8 , wherein the means for focusing comprises:
a downwardly extended section, integrally formed on the panel toward the light source, comprising an end;
a convex projection, integrally formed on the end of the extended section, comprising the convex surface facing the light source; and
a light-collecting rim downwardly formed on the panel and around the extended section in a direction toward the light source.
12. The apparatus of claim 8 , further comprising means for defining a scanning window that allows light emitted from the light source to pass through the scanning window and onto the document.
13. The apparatus of claim 8 , further comprising means for guiding the light emitted from the light source toward the document.
14. The apparatus of claim 8 , further comprising means for collecting and concentrating light emitted from the light source toward the document.
15. A device comprising:
a light-focusing device formed on a panel that is positioned between a light source and a document, wherein the light-focusing device comprises a convex surface configured to receive the light emitted from the light source, and wherein the light-focusing device is configured to focus the light emitted from the light source through the panel and onto the document.
16. The device of claim 15 , wherein the light-focusing device comprises a downwardly extended section formed on the panel toward the light source, and wherein the convex surface is formed on an end of the downwardly extended section.
17. The device of claim 15 , wherein the light-focusing device comprises:
a downwardly extended section formed on the panel toward the light source, wherein the convex surface is formed on an end of the downwardly extended section; and
a light-collecting rim formed on the panel around the downwardly extended section.
18. The device of claim 15 , further comprising a bottom panel coupled to at least one surface of the panel, wherein the bottom panel is configured to define a scanning window that allows light emitted from the light source to pass through the scanning window and onto the document.
19. The device of claim 15 , wherein the light-focusing device is configured to guide the light emitted from the light source toward the document.
20. The device of claim 15 , wherein the light-focusing device is configured to collect and concentrate light emitted from the light source toward the document.