19mm F/2.0 Cooled Manual Focusing Lens For 640x512-15um Detector

Brief discussion of Cooled Manual Focus Lens:

Infrared optics, also known as IR optics, are utilized to gather, concentrate, or align light spectrums in the near infrared (NIR), shortwave infrared (SWIR), midwave infrared (MWIR), or longwave infrared (LWIR). Infrared optics have a wavelength range of 700 – 16000nm. Wavelength Optoelectronics provides a vast selection of high-performance infrared optics for various applications including life sciences, security, machine vision, thermal imaging, and industrial purposes.

For those working in the 3µm to 5µm spectral range, MWIR achromats are available. These lenses offer nearly flawless performance for FTIR spectroscopy and mid-wave infrared thermal imaging, as well as adjustable quantum cascade lasers.

MWIR lenses are commonly used with cooled MW detectors, and the aperture is positioned in front of the lens. As a result, the lens tends to be larger and the "cold aperture effect" (also known as ghosting, reflection, or cold screen effect) must be taken into account. While cooling lenses and detectors may be bulky, they allow for detection distances of up to 10 km to 30 km when using focal lengths of 150 mm or 300 mm.

Cooled Manual Focus Lens Important indicators