Multi-spectral detection system with common collecting means
A multi-spectral detection system for detecting radiation within frequency bands that are in diverse portions of the electromagnetic spectrum is disclosed. The preferred embodiment is a cassegrain system including a primary reflector for reflecting radiant energy in the radio frequency and infrared portions of the electromagnetic spectrum; a subreflector positioned along the axis of the primary reflector for rereflecting the radiant energy reflected from the primary reflector toward the primary reflector and focusing the rereflected radiant energy in a common focal plane about the system axis; a feed horn coaxially positioned at the common focal plane and having an entrance in the common focal plane about the system axis for transferring the collected radio frequency radiant energy from the focal plane to a detector of radio frequency radiant energy; and a bundle of optical fibers coaxially positioned at the common focal plane and having openings in the common focal plane about the system axis for transferring collected infrared radiant energy from the focal plane to a detector of infrared radiant energy. A baffle is coaxially positioned for blocking light other than the re-reflected infrared radiation from being received and transferred by the optical fibers.
- Assignee:
- General Dynamics Corp
- Patent Number(s):
- US 4282527
- OSTI ID:
- 6145887
- Country of Publication:
- United States
- Language:
- English
Similar Records
Compact, high cold shield efficiency optical system
Offset truss hex solar concentrator
Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANTENNAS
DESIGN
DETECTION
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
EQUIPMENT
MEASURING INSTRUMENTS
MECHANICAL STRUCTURES
OPTICAL EQUIPMENT
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
REFLECTION