Honeywell International Inc.

Alliedsignal Inc.

Scott E Hamilton

Nicolo F Machi

Craig Giffen

Saed M Mubaslat

Charles A Roudeski

Scott R Mangum

Brian Barnhart

Brian J Barnhart

Saed S Mubaslat

An electronically controlled retractable landing light () for use with aircraft. A controller () compares the commanded position of a lighthead () by means of a contactless absolute position sensor (). Operation of a brake (), motor (), and lamp () is controlled by a control unit (). Electrical power to the brake (), motor (), and lamp () is slowly applied and removed to reduce electromagnetic emissions and extend the service life of a power stage (), brake (), motor (), and lamp (). The lighthead () may be manually stowed in the event of a fault.

Electronically controlled aircraft retractable landing light with manual retraction capability

A multi-mode visible and infrared lighthead () for use as a landing light or searchlight. The multi-mode lighthead incorporates a modular design wherein at least one visible light source () and at least one infrared diode () are mounted into the rear sector () of a housing (). Visible or infrared light is emitted out of the front sector () of the housing (). Lenses () are installed onto the front sector () of the housing () and sealed to protect the interior of the lighthead () from the elements. Alternatively, and in combination, an imaging module (), and infrared laser () and/or a fixed-position searchlight with rangefinder and positioning capability is provided in the multi-mode lighthead().

Multi-mode searchlight

An electronically controlled, programmable searchlight (,), particularly useful for mounting on helicopters. The searchlight (,) uses a digital electronic control circuit (,) in conjunction with rotary potentiometers (,), (,) to control movement of the searchlight (,). Adjustable trimpots (,) are employed to provide the searchlight (,) with preset positions, each preset position having an easily alterable operating envelope. The searchlight (,) may have light sources (,) of varying type, which may also be controlled by the electronic control circuit (,).

Electronically controlled searchlight having multiple preset positions

Growing community of inventors

North Lewisburg, OH, United States of America

Scott E Hamilton