Method for Targeting a Source of an Incoming Laser

• US 20070278391A1
• Filed: 02/22/2007
• Published: 12/06/2007
• Est. Priority Date: 07/18/2003
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Rhodes, Michael, Jelinek, Jan, Thomas, Vicraj, Zunsteg, Philip
• Granted Patent: US 7,427,732 B2
• Time in Patent Office: Days
• US Class Current: 250/221
• CPC Class Codes: G01S 3/784 using a mosaic of detectors
• CPC Class Codes: G01S 3/789 using rotating or oscillating beam systems, e.g. using mirrors, prisms
• CPC Class Codes: H01L 27/14618 Containers
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A system and method for laser source detection. An exemplary embodiment of the system includes a first array of lenses, a second array of opto devices (including light sources and light detectors), and at least one processor. By positioning the array of lenses to determine the lens position at which energy from an incoming laser is greatest on the light detectors, the approximate location of the laser source may be determined. Upon determining the source, responsive action may be taken. If the incoming laser is from a friendly party, a friendly-party notification may be provided. If the incoming laser is from an enemy, reciprocal targeting or false reflections may be employed.

Claims

1. A method for reciprocal targeting of a source of an incoming laser, comprising:

a. determining a direction of the incoming laser by

i. receiving energy from the incoming laser through a plurality of microlenses on a corresponding plurality of opto devices, wherein at least two of the plurality of opto devices are photodiodes,

ii. translating each of the plurality of microlenses to a plurality of lens positions,

iii. determining the energy detected at the at least two photodiodes for each of the plurality of lens positions, and

iv. determining an estimate of the direction;

b. identifying an optical code in the incoming laser and determining whether the optical code is associated with at least one of a friendly party and an enemy; and

c. upon determining that the incoming laser is not from the friendly party, targeting the source of the incoming laser by transmitting at least one laser toward the source of the incoming laser.

2. The method of claim 1, wherein targeting the source of the incoming laser includes adjusting a plurality of microlenses overlying semiconductor lasers to focus the at least one laser toward the estimate of the direction.

3. The method of claim 2, wherein determining the direction and determining whether the optical code is associated with at least one of the friendly party and the enemy are performed by a plurality of processors associated with the plurality of microlenses and the plurality of opto devices.