Accession Number:

AD0785472

Title:

Instructions for Pinhole Image Projection Focusing Devices for 24 in. and 36 in. Beacons.

Descriptive Note:

Corporate Author:

COAST GUARD WASHINGTON DC TESTING AND DEVELOPMENT DIV

Personal Author(s):

Report Date:

1964-06-23

Pagination or Media Count:

14.0

Abstract:

The Pinhole Image Projection Focusing Device is designed to enable field personnel to focus and align large beacons during daylight hours, when the beacons are out of service. When the adjustments are completed, the beacon lamp and the spare lamp and auxiliary reflectors if any is accurately positioned, the projected beam is collimated, and the beam axis is horizontal.

Subject Categories:

  • Air Conditioning, Heating, Lighting and Ventilating
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE