Light source of LED for scanner
First Claim
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1. A light source of LED used in a scanner, comprising:
- a plurality of LED arranged for providing a light source for scanner; and
a plurality of lens mounted one-on-one upon said light source of LED to disperse the light of LED in a first direction and condense the light of LED in a second direction for fixing the field of light of LED, wherein said first direction is along a direction of said line of LEDs and said second direction is perpendicular to said line of LEDs.
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Abstract
A LED light source used in a scanner is disclosed, and particularly a series of lenses employed to condense the LED light on the front and rear sides and disperse the LED light to the left and right sides. LED compared with CCFL employed as a light source can improve the problem of high power consumption, warm-up, and the limits of lifetime. Furthermore, the light through the lens extends the range of the left and right sides on a scanned material. Therefore, the amount of the LEDs decreases, than that skilled in the art used a large number of LEDs for obtaining a smoother field of light, and achieve low power consumption.
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Citations
17 Claims
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1. A light source of LED used in a scanner, comprising:
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a plurality of LED arranged for providing a light source for scanner; and
a plurality of lens mounted one-on-one upon said light source of LED to disperse the light of LED in a first direction and condense the light of LED in a second direction for fixing the field of light of LED, wherein said first direction is along a direction of said line of LEDs and said second direction is perpendicular to said line of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification