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US 2010/0245264 A1Published application
Optical Detection Apparatus and Method
AssigneeArima Lasers Corp.
InventorsMing-Cho Wu, Ching-Hui Lin
Life of this patent
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Abstract
In the specification and drawing, an optical detection apparatus is described and shown with scanning devices, detectors, and a processing unit, wherein the scanning devices are positioned to scan a detection region with different light wavelengths.
Claims17
An optical detection apparatus comprising:
- a first and second scanning devices respectively positioned to scan a detection region with a first and second light beams, in which incident angles of the first and second light beams respectively vary with time and the wavelength of the first light beam is different from the wavelength of the second light beam;
- a first and second detectors respectively positioned to detect a first and second time signals upon which the first and second light beams are respectively reflected by a touch within the detection region;
- and
- a processing unit operative to determine a location of the touch within the detection region by the first and second time signals and the incident angles of the first and second light beams by way of triangulation.
1 more element
An optical detection method comprising:
- scanning a detection region respectively with a first and second light beams, in which incident angles of the first and second light beams respectively vary with time, and the wavelength of the first light beam is different from the wavelength of the second light beam;
- detecting a first and second time signals upon which the first and second light beams are respectively reflected by a touch within the detection region;
- and
- determining a location of the touch within the detection region by the first and second time signals and the incident angles of the first and second light beams by way of triangulation.
1 more element
Dependencies are inferred from the claim text.