Device, a system and a method of encoding a position of an object
First Claim
1. A device for encoding a position of an object, comprising:
- a first light source;
a first collimating element adapted to form first collimated light from the first light source, the first collimated light comprising a first collimated light beam;
a carrier adapted to guide the first collimated light, the carrier comprising a first primary light redirecting structure and a second primary light redirecting structure; and
a detector device for encoding the position of an object with respect to an active area of an encoding plane;
wherein the first primary light redirecting structure is adapted to redirect at least a part of the first collimated light beam through the active area into the second primary light redirecting structure; and
wherein the second primary light redirecting structure is adapted to redirect light received from the first primary light redirecting structure onto the detector device.
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Accused Products
Abstract
The present invention relates to a device for encoding a position of an object, comprising a first light source; a first collimating element adapted to form first collimated light from the first light source; a carrier adapted to guide light and comprising a first primary light redirecting structure and a second primary light redirecting structure; and a detector device for encoding the position of an object with respect to an active area of an encoding plane; wherein the first primary light redirecting structure is adapted to redirect at least a part of a first light beam through the active area into the second primary light redirecting structure; and wherein the second primary light redirecting structure is adapted to redirect light received from the first primary light redirecting structure onto the detector device. Thereby is achieved that a collimated light beam is propagated along the carrier and from the carrier into the active area via the first primary light redirecting means. The collimated light ensures a controlled part of the carrier is utilized for the propagation of the collimated light.
8 Citations
26 Claims
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1. A device for encoding a position of an object, comprising:
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a first light source; a first collimating element adapted to form first collimated light from the first light source, the first collimated light comprising a first collimated light beam; a carrier adapted to guide the first collimated light, the carrier comprising a first primary light redirecting structure and a second primary light redirecting structure; and a detector device for encoding the position of an object with respect to an active area of an encoding plane; wherein the first primary light redirecting structure is adapted to redirect at least a part of the first collimated light beam through the active area into the second primary light redirecting structure; and wherein the second primary light redirecting structure is adapted to redirect light received from the first primary light redirecting structure onto the detector device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 25, 26)
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22. A method of encoding a position of an object, comprising:
redirecting in a first primary light redirecting structure at least a part of a first collimated light beam received from a light source via a collimating element through an active area and into a second primary light redirecting structure; redirecting in the second primary light redirecting structure at least a part of the light received from the first primary light redirecting structure onto a detector device; and encoding the position the object with respect to the active area as function of the amount of light received at the detector device. - View Dependent Claims (23, 24)
Specification