Accession Number:

AD0653850

Title:

INFRARED COATING STUDIES.

Descriptive Note:

Quarterly rept. no. 4, 16 Mar-15 Jun 67.

Corporate Author:

BAUSCH AND LOMB INC ROCHESTER N Y RESEARCH AND DEVELOPMENT DIV

Personal Author(s):

Report Date:

1967-06-15

Pagination or Media Count:

17.0

Abstract:

Research was carried out on coating materials for the far infrared. Films of TlBr and TlF were prepared and evaluated. Silicon and germanium were evaluated as substrate materials for the infrared to 40 microns. Measured curves of reflectance and transmittance are presented. The results of single layer anti-reflection coatings for these substrates are also given. Low frequency pass filters constructed and measured transmittance curves are presented. Two bandpass filter designs of the twin cavity all-dielectric type are also described. Maximum transmittance near 32 microns was obtained.

Descriptors:

• *INFRARED FILTERS
• *OPTICAL COATINGS
• *INFRARED OPTICAL MATERIALS
• OPTICAL COATINGS
• FILMS
• VAPOR PLATING
• THALLIUM COMPOUNDS
• BROMIDES
• FLUORIDES
• SUBSTRATES
• GERMANIUM
• SILICON
• REFLECTIVITY
• LIGHT TRANSMISSION
• BANDPASS FILTERS
• DIELECTRICS

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE