Electronic spectacles
First Claim
1. Spectacles for a wearer with at least one eye, comprising:
- 1.1 at least one spectacle lens;
1.1.1 wherein the at least one spectacle lens comprises a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control;
1.2 an eye tracker (ET) capable of determining the viewing direction of the eye;
1.3 at least one sensor (IL, IR) for measuring the brightness of the visible light incident thereon;
1.3.1 wherein the at least one sensor (IL, IR) is arranged on the eye-side of the spectacle lens;
1.3.2 wherein the at least one sensor (IL, IR) can measure the brightness through the at least one spectacle lens;
1.3.3 wherein the at least one sensor (IL, IR) comprises1.3.3.1 an imaging system with a camera or1.3.3.2 at least three sensors that span a coordinate system or1.3.3.3 a compound eye;
1.3.4 wherein the at least one sensor (IL, IR) is able to determine the brightness of the visible light which is incident upon it from the viewing direction of the eye determined by the eye tracker (ET); and
1.4 a closed-loop control circuit (MC) to control the transmission of the liquid crystal cell (LC);
1.4.1 wherein a setpoint value for the brightness at the eye is preset;
1.4.2 wherein the control circuit takes the brightness measured by the at least one sensor (IL, IR) in the viewing direction of the eye as the actual value.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to spectacles. Said spectacles comprise a spectacle lens having a liquid crystal cell (LC) the transmission (TR) of which can be switched between transmitting and blocking. Furthermore, the spectacles comprise an eye tracker (ET) which can detect the viewing direction of the eye. They further comprise at least one sensor (IL, IR) for measuring the brightness of the visible light incident on it, said sensor being arranged on the eye side of the spectacle lens and measuring the brightness entering through the at least one spectacle lens in a spatially resolved manner. The sensor can determine the brightness of the visible light incident on it from the viewing direction of the eye detected by the eye tracker. The spectacles also have a closed loop control system for controlling the transmission of the liquid crystal cell, a desired value for the brightness at the level of the eye being predetermined, and the closed loop system using the brightness measured by the sensor in the viewing direction of the eye as the actual value.
9 Citations
22 Claims
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1. Spectacles for a wearer with at least one eye, comprising:
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1.1 at least one spectacle lens; 1.1.1 wherein the at least one spectacle lens comprises a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control; 1.2 an eye tracker (ET) capable of determining the viewing direction of the eye; 1.3 at least one sensor (IL, IR) for measuring the brightness of the visible light incident thereon; 1.3.1 wherein the at least one sensor (IL, IR) is arranged on the eye-side of the spectacle lens; 1.3.2 wherein the at least one sensor (IL, IR) can measure the brightness through the at least one spectacle lens; 1.3.3 wherein the at least one sensor (IL, IR) comprises 1.3.3.1 an imaging system with a camera or 1.3.3.2 at least three sensors that span a coordinate system or 1.3.3.3 a compound eye; 1.3.4 wherein the at least one sensor (IL, IR) is able to determine the brightness of the visible light which is incident upon it from the viewing direction of the eye determined by the eye tracker (ET); and 1.4 a closed-loop control circuit (MC) to control the transmission of the liquid crystal cell (LC); 1.4.1 wherein a setpoint value for the brightness at the eye is preset; 1.4.2 wherein the control circuit takes the brightness measured by the at least one sensor (IL, IR) in the viewing direction of the eye as the actual value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22)
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19. Method for regulating the brightness of the visible light incident on at least one eye comprising the following steps:
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21.1 a pair of spectacles is provided, wherein the spectacles comprise; 21.1.1 at least one spectacle lens; 21.1.2 wherein the at least one spectacle lens has a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control; 21.2 an eye tracker (ET) which determines the viewing direction of the eye; 21.3 at least one sensor (IL, IR) for measuring the brightness of the visible light incident on the sensor is provided; 21.3.1 wherein the at least one sensor (IL, IR) is arranged on the eye-side of the spectacle lens; 21.3.2 wherein the at least one sensor (IL, IR) measures the brightness through the at least one spectacle lens; 21.3.3 wherein the at least one sensor (IL, IR) comprises 21.3.3.1 an imaging system with a camera or 21.3.3.2 at least three sensors which span a coordinate system or 21.3.3.3 a compound eye; 21.3.4 wherein the at least one sensor (IL, IR) determines the brightness of the visible light from the viewing direction of the eye determined by the eye tracker (ET); 21.4 a closed-loop control circuit (MC) for controlling the transmission of the liquid crystal cell (LC) is provided; 21.4.1 wherein a setpoint value for the brightness at the eye is preset; 21.4.2 wherein the control loop takes the brightness measured by the sensor in the viewing direction of the eye as the actual value.
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Specification