​Teledyne Judson Technologies (TJT) History


TJT was founded in 1969 in a north suburb of Philadelphia Pennsylvania as Judson Infrared, Inc., and since that time has specialized in the development and manufacture of a comprehensive product line of infrared detector products covering the near to the far infrared spectrum.  Early detector developments included Germanium (Ge) and Indium Antimonide (InSb) detectors. In 1987, TJT acquired the catalog product of Santa Barbara Research Center (SBRC) expanding the product offering to include detector product line that included, InAs, HgCdTe, and doped Germanium detectors as well as cooled packages and accessories. TJT was acquired by EG&G in 1987 and operated as a division of the Optoelectronics Group.  In 1991, TJT established a space department in addition to the standard catalog products. Later custom products were added to the department. Successful custom product development has been a major factor in TJT's steady growth over the years. TJT continued to expand its custom engineering program capability and established a firm technical foundation to successfully meet the challenges of space qualified and military specified custom sensor requirements. In the mid-90s, TJT developed its InGaAs and Extended InGaAs (x-InGaAs) product line platform that included six different detector sizes of 1.7, 1.9, 2.2, 2.4 and 2.6 um cut-off detectors combined with cooling from room temperature up to 4 stages of Thermo Electric Cooling (TEC). In 1997, TJT purchased Graseby Infrared further expanding its offering by adding PbS and PbSe to its catalog. TJT ISO-9001 certification in 1998 and continues to practice total management culture throughout the entire organization.


In early 2000, the company was acquired by Keystone Capital, Inc. of Chicago, Illinois, in partnership with TJT's management.  The new entity was named Judson Technologies LLC, and operated as a stand-alone entity in its Montgomeryville, Pennsylvania facility under the same management team until 2008. During this time TJT developed, under internal research and development, a focal plane array (FPA) platform in InGaAs, InSb and MCT. In 2008, the company was purchased by Teledyne Technologies and renamed Teledyne Judson Technologies. Since joining Teledyne, TJT completed a 12,000 sq. ft. clean room expansion for detectors, FPAs, and IDCAs.


In the more than 45 years that TJT has been in business, we have continuously strived for technical excellence in all aspects of the production and delivery of our product. The delivery of several millions of detectors, to a wide range of satisfied repeated customers, all over the world is a testimony to our quality and reliability.


TJT devices meet demanding requirements for a broad range of applications including industrial and scientific instrumentation for gas sensing, temperature monitoring, laser detection, laser power monitoring, and laser simulation training in the commercial, military, and commercial space markets. Custom engineering services have included space qualified programs and DOD Mil-Spec programs.