Claims
- 1. A method of producing a durable optical baffling material comprising the steps of:
- providing a starting material;
- polishing the surface of the starting material to a mirror finish; and
- bombarding the surface of the starting material with a pulsed beam of electrons having a pulse length of about 0.1 microseconds to make the surface appear black in color.
- 2. The method of producing a durable optical baffling material recited in claim 1 wherein the providing step comprises:
- providing a starting material with a fine-grained structure.
- 3. The method of producing a durable optical baffling material recited in claim 1 wherein the bombarding step comprises:
- bombarding the surface of the starting material with a pulsed beam of electrons having an average energy of 25 keV. to make the surface appear black in color.
- 4. The method of producing a durable optical baffling material recited in claim 1 wherein the bombarding step comprises:
- bombarding the surface of the starting material with a pulsed beam of electrons having an energy in the range of 0 to 50 keV. to make the surface appear black in color.
- 5. The method of producing a durable optical baffling material recited in claim 1 wherein the bombarding step comprises:
- bombarding the surface of the starting material with a pulsed beam of electrons at a fluence of 0.5 cal/cm.sup.2 to make the surface area appear black in color.
- 6. The method of producing optical baffling material recited in claim 1 wherein the providing step comprises:
- providing a starting material consisting of a thin, anodized film of beryllium oxide.
- 7. The method of producing optical baffling material recited in claim 1 wherein the providing step comprises:
- providing a starting material consisting of glassy carbon.
- 8. A method of producing a durable optical baffling material comprising the steps of:
- providing a starting material consisting of a thin, anodized film of beryllium oxide; and
- bombarding the surface of the starting material with a pulsed beam of electrons to make the surface appear black in color.
- 9. A method of producing a durable optical baffling material comprising the steps of:
- providing a starting material consisting of glassy carbon; and
- bombarding the surface of the starting material with a pulsed beam of electrons to make the surface appear black in color.
RIGHTS OF THE GOVERNMENT
The invention described herein may be manufactured, used and licensed by or for the United States Government for governmental purposes without the payment to us of any royalty thereon.
US Referenced Citations (2)