Optical scanners, such as hand-held optical scanners

1. A hand-held optical scanner, comprising:

a scan window;

a first light source and a second light source that are positioned within the hand-held optical scanner, wherein the first light source and the second light source emit light for passing through the scan window to illuminate an adjacent scan region;

a controller operatively connected to the first light source and the second light source, wherein the controller is configured to cause the first light source and the second light source to cycle on and off in sequence such that no more than one of the first light source and the second light source is on at any time;

an image sensor that captures light that passes from the adjacent scan region into the hand-held optical scanner through the scan window and provides an electrical signal based on the captured light; and

scanner circuitry that is operatively connected to the image sensor, wherein the scanner circuitry is configured to selectively record a first portion of light captured by a first region of the image sensor when the first light source is on and the second light source is off and record a second portion of light captured by a second region of the image sensor when the second light source is on and the first light source is off.

2. The hand-held optical scanner of claim 1 , further comprising:

a light shield that is configured to block at least a portion of the emitted light from reaching the scan window.

3. The hand-held optical scanner of claim 1 wherein the first light source and the second light source each include a diffuse light source.

4. The hand-held optical scanner of claim 1 , further comprising:

a first light polarizing filter through which at least a portion of the emitted light passes; and

a second light polarizing filter through which at least a portion of the emitted light that is reflecting off the scan window passes, the first and second polarizing filters being rotationally aligned in a way that produces a cross-polarization effect.

5. The hand-held optical scanner of claim 1 wherein the scan window has an inner surface spaced apart from an outer surface to define a cross-sectional thickness of the scan window, and wherein the cross-sectional thickness of the scan window varies in a first direction.

6. The hand-held optical scanner of claim 1 wherein the scan window has an inner surface spaced apart from an outer surface to define a cross-sectional thickness of the scan window, and wherein the cross-sectional thickness of the scan window varies in a first direction and a second direction.

7. The hand-held optical scanner of claim 1 wherein the scan window is configured to magnify at least a portion of a scan image that is focused on the image sensor.

8. The hand-held optical scanner of claim 1 wherein the scan window is configured to reduce the size of at least a portion of a scan image that is focused on the image sensor.

9. The hand-held optical scanner of claim 1 wherein the scan window has a thickness of from about 0.50 inch to about 1.0 inch.

10. The hand-held optical scanner of claim 1 , further comprising a single light polarizing filter through which at least a portion of the emitted light that is reflecting off the scan window passes.

11. The hand-held optical scanner of claim 1 wherein the scanner circuitry is further configured to combine the first portion of light and the second portion of light to form an image.

12. The hand-held optical scanner of claim 1 wherein the scanning window comprises a translucent material.

13. The hand-held optical scanner of claim 1 wherein the scanning window comprises a transparent material.

14. A hand-held optical scanner having a roughly rectangular body, the hand-held optical scanner comprising:

a scan window in a first side of the body, the scan window occupying at least 75% of the larger of a first dimension and a second dimension of the first side of the body;

an aperture in a second side of the body, the aperture occupying at least 75% of the larger of a first dimension and a second dimension of the second side of the body;

one or more light sources that are positioned within the hand-held optical scanner, wherein the one or more light sources emit light to illuminate an adjacent scan region;

a first image sensor configured to receive light that passes from the adjacent scan region into the hand-held optical scanner through the scan window;

a second image sensor configured to receive light that passes from the adjacent scan region into the hand-held optical scanner through the aperture; and

a reflection-reducing component that reduces an amount of the emitted light that reflects off of the scan window so that the first image sensor receives less of the emitted light that reflects off of the scan window;

wherein the second side of the body is approximately perpendicular to the first side of the body and the larger of the first and second dimensions of the second side of the body is at least twice as large as the larger of the first and second dimensions of the first side of the body.

15. A hand-held optical scanner, comprising:

a first scan window in a first side of the hand-held optical scanner;

a second scan window in a second side of the hand-held optical scanner;

one or more light sources that are positioned within the hand-held optical scanner, wherein the one or more light sources emit light to illuminate an adjacent scan region;

a first image sensor configured to receive light that passes from the adjacent scan region into the hand-held optical scanner through the first scan window; and

a second image sensor configured to receive light that passes from the adjacent scan region into the hand-held optical scanner through the second scan window,

wherein each of the first side and the second side have a first dimension and a second dimension, and the larger of the first and second dimensions of the second side is at least twice as large as the larger of the first and second dimensions of the first side.

16. The hand-held optical scanner of claim 15 , further comprising a reflection-reducing component configured to reduce an amount of the emitted light that reflects off of the first scan window so that the first image sensor receives less of the emitted light that reflects off of the first scan window.

17. The hand-held optical scanner of claim 16 , further comprising a second reflection-reducing component configured to reduce an amount of the emitted light that reflects off of the second scan window so that the second image sensor receives less of the emitted light that reflects off of the second scan window.

18. The hand-held optical scanner of claim 15 ,

wherein the first image sensor comprises a two-dimensional image sensor having a two-dimensional array of sensing elements, and

wherein the second image sensor comprises a one-dimensional image sensor having a linear array of sensing elements.