All matter expands or contracts in response to temperature change. In a lens, this means that focus will drift with temperature. High-performance vision systems require athermalized imaging lenses which are ruggedized to compensate for this phenomenon. Athermalization can be active or passive and each type has its benefits. Additional information about the types of athermalization can be found in An Introduction to Passive Athermalization.
The TECHSPEC® Athermal Imaging Lenses are athermalized imaging lenses which are the result of a collaboration between Edmund Optics and Ruda-Cardinal, a leader in the field of optical engineering, specializing in the design and development of cutting-edge optical systems. Combined efforts enabled rapid and reliable development of this lens, designed to meet a wide array of applications with affordability, availability, and volume manufacturing in mind.
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