Accession Number:

ADA429993

Title:

Gradient-Index (GRIN) Lenses by Slurry-Based Three-Dimensional Printing (S-3DP)

Descriptive Note:

Final rept. 1 Apr 2000-30 Sep 2003

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s):

Report Date:

2004-11-16

Pagination or Media Count:

36.0

Abstract:

The BaO-SiO2 material system, which has a 2.4 stronger index changing ability than the Al2O3-SiO2 material system, was developed. Barium acetate was used as the dopant source. The pre-sintering treatment was found to be 900 degrees C for 18 hours in air to convert barium acetate to barium oxide. The sintering condition was found to be 1725 degrees C for 10 minutes in vacuum. A barium oxide-doped GRIN lens with radial parabolic index variation was fabricated. Its effective focal length was measured to be 14.63cm in the x direction and 11.14cm in the y direction. The barium oxide concentration profiles were measured. The theoretical focal lengths were calculated and compared with the effective focal lengths.

Subject Categories:

  • Fabrication Metallurgy
  • Optics
  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE