Simplified Optical Position Sensing Assembly
First Claim
1. An optical position sensing assembly comprising:
- a unitized optical assembly formed as a single component; and
a unitized optical circuit, wherein the unitized optical circuit is coupled to the unitized optical assembly.
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Abstract
The present invention relates to a simplified optical position sensing assembly, which includes a unitized optical assembly formed as a single component and a unitized optical circuit. The unitized optical assembly is attached or mounted to the unitized optical circuit. The unitized optical assembly may include a body and a single-element lens. The single-element lens can be injection-molded within a first cavity of the body so as to form a single component. An illumination window may be received within a second cavity extending from the back to the front of the body. The unitized optical circuit can include an energy source and a sensor directly connected thereto. The present invention also relates to an optical position sensing system incorporating such a simplified optical position sensing assembly and methods for manufacturing a unitized optical assembly.
14 Citations
20 Claims
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1. An optical position sensing assembly comprising:
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a unitized optical assembly formed as a single component; and a unitized optical circuit, wherein the unitized optical circuit is coupled to the unitized optical assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An optical position sensing system comprising:
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a touch area; and an optical position sensing assembly adjacent the touch area, the optical position sensing assembly configured to detect interference with energy traveling in the touch area, the optical position sensing assembly comprising a unitized optical assembly formed as a single component, a sensor and an energy source. - View Dependent Claims (14, 15, 16)
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17. A method for manufacturing a unitized optical assembly, the method comprising:
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injection-molding a body from an opaque material, wherein at least a portion of the body defines an aperture and a cavity for receiving a single-element lens; and injection-molding the single-element lens within the cavity of the body so as to form a single component, wherein the single-element lens comprises a lens material suitable for chemically bonding to the opaque material, and the single-element lens fills the cavity so as to create an imaging lens surface substantially flush with the aperture. - View Dependent Claims (18, 19, 20)
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Specification