Infrared seeker

Patent 4690351 Issued on September 1, 1987. Estimated Expiration Date:

February 11, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Optical apparatus
Patent #: 4034949
Issued on: 07/12/1977
Inventor: Hoesterey , et al.

Active-passive scanning system
Patent #: 4326799
Issued on: 04/27/1982
Inventor: Keene , et al.

Spin-stabilized projectile and guidance system therefor Patent #: 4347996
Issued on: 09/07/1982
Inventor: Grosso

Inventors

Assignee

Raytheon Company

Application

No. 06/828413 filed on 02/11/1986

US Classes:

244/3.16Optical (includes infrared)

Examiners

Primary: Jordan, Charles T.

Attorney, Agent or Firm

International Classes

F41G 7/20 (20060101)
F41G 7/22 (20060101)
G01S 3/786 (20060101)
G01S 3/78 (20060101)

Abstract

An infrared seeker for use in a spinning projectile is shown to include a Cassegrainian telescope having a tapered optical wedge overlying the entrance aperture, such wedge being rotatably mounted to allow scanning and tracking, and a jettisonable streamlined cover overlying the optical wedge to reduce drag so long as such cover is in place.