Claims
- 1. An eye protection device for protection against light from a source of light, said device comprising:
- a wavelength-tunable filter for passing at least one wavelength selected in response to a control signal;
- mounting means for mounting said filter before at least one eye of a user; and
- control means coupled to said filter for setting said passing wavelength to a wavelength other than a wavelength at which said light source emits.
- 2. A device according to claim 1, wherein said filter comprises a wavelength-tunable etalon.
- 3. A device according to claim 1, wherein said control means comprises means for generating light filter control signals, and for coupling said light control signals to said wavelength-tunable filter, for controlling said filter to reduce the amplitude of light passing therethrough at said wavelength at which said light source emits.
- 4. An eye protection device comprising a first wavelength-tunable filter for passing at least one wavelength selected in response to a control signal;
- mounting means for mounting said first filter before at least one eye of a user; and
- control means coupled to said first filter for generating said control signal for setting said passing wavelength to a wavelength other than a wavelength at which a light source emits, wherein said control means comprises:
- a second wavelength-tunable filter for passing said at least one wavelength which is passed by said first wavelength-tunable filter;
- means for coupling light from said light source to said second wavelength-tunable filter, for generating second light signals at the output of said second wavelength-tunable filter, which second light signals correspond to those which are passed by said first wavelength-tunable filter; and
- light detection and processing means coupled to said first and second wavelength-tunable filters, for detecting said second light signals, and for generating light filter control signals, and for coupling said light control signals to said first and second wavelength-tunable filters, for controlling said filters to reduce the amplitude of light passing therethrough at said wavelength at which a light source emits.
- 5. A device according to claim 1, wherein said filter comprises comb filtering means.
- 6. A device according to claim 5, wherein said comb filtering means comprises a Fabry-Perot etalon.
- 7. A device according to claim 5, wherein said comb filtering means comprises cascaded Fabry-Perot etalons.
Government Interests
The Government has rights in this invention pursuant to contract no. F33615-92-C5927 with the Department of the Air Force.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3699347 |
Buchan et al. |
Oct 1972 |
|
4202601 |
Burbo et al. |
May 1980 |
|
4508964 |
Gunning, III et al. |
Apr 1985 |
|
5132826 |
Johnson et al. |
Jul 1992 |
|