Optical touch screen
First Claim
Patent Images
1. An optical touch screen, comprising:
- a flat plate display panel;
a case mounted with the flat plate display panel;
a bracket assembled on the case;
an infrared light emitting diode disposed on a holder at an outer side of the bracket and emitting infrared light to an inner side of the bracket, wherein a stair unit is formed at a lateral upper surface of the holder, and the stair unit is mounted with the infrared light emitting diode;
a passage formed on the bracket and through which infrared light emitted from the infrared light emitting diode passes;
a retro reflector disposed at an inner side of the bracket and configured to reflect infrared light passing through the passage;
an iris formed on the bracket and through which infrared light reflected from the retro reflector passes; and
a sensor disposed at the outer side of the bracket and detecting infrared light passing through the iris.
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Abstract
The present invention relates to an optical touch screen, including a flat plate display panel, a case mounted and assembled with the flat plate display panel, brackets assembled on the case, a camera module mounted on the brackets, and an iris formed on the brackets and through which infrared incident on the camera module passes.
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Citations
15 Claims
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1. An optical touch screen, comprising:
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a flat plate display panel; a case mounted with the flat plate display panel; a bracket assembled on the case; an infrared light emitting diode disposed on a holder at an outer side of the bracket and emitting infrared light to an inner side of the bracket, wherein a stair unit is formed at a lateral upper surface of the holder, and the stair unit is mounted with the infrared light emitting diode; a passage formed on the bracket and through which infrared light emitted from the infrared light emitting diode passes; a retro reflector disposed at an inner side of the bracket and configured to reflect infrared light passing through the passage; an iris formed on the bracket and through which infrared light reflected from the retro reflector passes; and a sensor disposed at the outer side of the bracket and detecting infrared light passing through the iris. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification