Accession Number:

ADD015350

Title:

Shutter Apparatus.

Descriptive Note:

Patent, Filed 4 Mar 91, patented 5 May 92,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1992-05-05

Pagination or Media Count:

7.0

Abstract:

An apparatus for protecting the image recording media in a tracking camera from destructive illumination. The apparatus includes a shutter assembly mounted between the lens and the camera and a sensor assembly mounted in juxtaposition with the camera so that a sensor at one end of the tube in the sensor assembly detects destructive illumination before it impinges on the lens. The sensor causes a signal to be passed through circuitry connecting to the shutter assembly, activating a rotary solenoid which moves a blade to an interrupting position between the lens and the camera until no further destructive illumination impinges on the sensor. The shutter blade return to a non-interrupting position when the sensor no longer receives destructive illumination.

Subject Categories:

  • Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE