Accession Number:

AD0679427

Title:

LABORATORY TESTS OF TIDELAND 300MM LANTERN.

Descriptive Note:

Test rept.,

Corporate Author:

COAST GUARD BALTIMORE MD FIELD TESTING AND DEVELOPMENT CENTER

Personal Author(s):

• Lomer,L. R.

Report Date:

1968-11-29

Pagination or Media Count:

30.0

Abstract:

A marine lantern was recently introduced with a 300mm Fresnel acrylic plastic lens. Marine signal lanterns of this construction in 155mm and 250mm sizes have previously been photometrically tested and found to be more efficient than lanterns using pressed glass Fresnel lenses. A comparison test of all three acrylic plastic lenses is described herein. Photometric characteristics of the lanterns were measured using the same marine signal lamps and six-place lampchanger for all lanterns to afford direct comparison. Author

Descriptors:

• (*MARINE SAFETY EQUIPMENT
• NAVIGATIONAL LIGHTS)
• (*NAVIGATIONAL LIGHTS
• RELIABILITY(ELECTRONICS))
• SIGNAL LIGHTS
• ACRYLIC RESINS
• LIGHT TRANSMISSION
• FILAMENTS
• ALIGNMENT
• FOCUSING
• INTENSITY
• STATISTICAL ANALYSIS

Subject Categories:

• Marine Engineering
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE