Our space industry customers include NASA, Galileo, Sodern, Boeing, TRW, Lockheed Martin, Northrop Grumman, Orbital Sciences, Ithaco, the Indian Space Research Organization, Canadian Space Agency and Surrey Satellite (SSTL) .  Servo products are proven components with many years of flight heritage. Over the years the majority of Earth sensors built for satellite attitude determination use thermistor bolometers as their eyes.  Servo is the only supplier of these devices and we have been supplying them to this community for over 35 years. In the 1980s Servo developed a pyroelectric detector made of Lithium Tantalate (LTO), specifically designed for space flight.   It was qualified for use on the T-SCANWHEEL built by Ithaco for the TOMS program.  This technology formed the basis for the pyroelectric array built by Servo and used on the MiDES Earth Sensor Assembly.  Later a Radiation-Hard Pyroelectric Optical Barrel Assembly was also developed for the Boeing Corporation (Hughes Aircraft), and is currently used on their spin-stabilized satellites.  Pyroelectric detectors, made of Lithium Tantalate, are not only less expensive to build but they are much more sensitive devices than either the traditional bolometers or thermopiles. The performance advantage of this material lies in its large pyroelectric current output and high temperature stability. In addition it the material is easily photo lithographically patterned to form detector arrays in easily-changeable configurations.  Servo continued the development of LTO devices by combining the detector technology with our systems engineering capabilities to produce a variety of detector based products that contain integral electronics.  Multiple detector arrays that are hybridized are the heart of the Servo Earth Sensor product line and enables unprecedented accuracies to be achieved in an Earth sensor.  One unique feature of this type of detector is that there is a constant voltage difference between a reference and the target, either Earth or space.  This characteristic results in the elimination of thermal calibration tables or the use of heaters to stabilize the unit temperature. It enhances the overall accuracy and maintains it over the full operating temperature range.       Web designed by RiBurton Designs Servo Corporation of America - All rights reserved