Claims
- 1. A display including a light source, the display comprising a dye-based filter material positioned to receive light from the light source, wherein the dye-based filter material absorbs light in the infrared range with respect to light in the visible range, the dye-based filter material having a sharp cutoff between 600 and 640 nm.
- 2. The display of claim 1, wherein the dye-based filter material provides NVIS filtering.
- 3. The display of claim 2, wherein the dye-based filter material includes at least one salt of MX42− types where M is Co or Ni.
- 4. The display of claim 3, wherein the dye-based filter material is mixed with a polymer.
- 5. The display of claim 1, further comprising:
a plurality of light-emitting diodes serving as the light source.
- 6. The display of claim 5, wherein at least one of the plurality of light-emitting diodes is coated with the dye-based filter material.
- 7. The display of claim 6, wherein the plurality of light emitting diodes are arranged in an array and a pattern within the array of light emitting diodes is coated with the dye-based filter material.
- 8. The display of claim 5, wherein at least one of the LEDs has a lens formed with dye-based material mixed with polymer.
- 9. An avionic display system, comprising:
a display configured to provide visual images in the visual frequency range; and a dye-based filter material positioned to receive light associated with the visual images, the dye-based filter material attenuating light in the near-infrared and infrared range.
- 10. The avionic display system of claim 8, wherein the light source includes LEDs and the dye-based filter material is coated on the LEDs.
- 11. The system of claim 9, wherein the dye-based filter material is a copper or cobalt dye material.
- 12. The display system of claim 9, further comprising a filter for attenuating light at wavelengths above 750 nm.
- 13. A method of manufacturing a display, the method comprising:
providing a light source; and coating the light source with a film that receives light from the light source with a dye-based filter material, wherein the dye-based filter material attenuates light in the infrared range.
- 14. The method of claim 13, further comprising:
providing an overcoat to the dye material to seal from the environment.
- 15. The method of claim 14, wherein the dye-based filter material includes a dye including a polymer host doped with combinations of at least one of CoCl42− and CoBr42−.
- 16. The method of claim 14, wherein the light source is an array of LEDs and at least one of the LEDs is coated.
- 17. A display system, comprising:
means for providing a visual image; and means for filtering light to absorb the light associated with the visual image above a selected wavelength range, wherein the selected wavelength range is above 610 nm.
- 18. An NVIS filter, comprising:
a monomer or polymer host; and a dye, the host being doped with the dye, the filter absorbing light in the near-infrared and infrared range and allowing light in the visible range to pass.
- 19. The filter of claim 18, wherein the filter attenuates light between a wavelength of 640 nm and 740 nm to a level below 10%.
- 20. The filter of claim 18 further comprising:
a pair of translucent films, wherein at least one of the translucent films are polarized.
- 21. The filter of claim 18 further comprising:
a blocking filter providing attenuation in the range of 745 nm.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is related to application Ser. No. 09/861,310 (OOCR174) by Mosier filed May 18, 2001 and application Ser. No. 09/861,307 (OOCR175) by Mosier et al. filed May 18, 2001, both assigned to the Assignee of the present application. The present application is also related to Application Serial No. ______ entitled “Composition for Filter Material”, filed on an even date herewith by Leslie F. Warren, Jr. and Hong-Son Ryang, and assigned to the Assignee of the present application.