LWIR Lenses

• 

LWIR lensplays a critical role in thermal imaging surveillance applications, beyond night vision capability, critical targets differentiation in poor vision conditions is considered the most practical attribute in homeland security and defense market segmentation.

Compared to the cooled system, which focal plane array detector kept at -70℃ needs cooling support, uncooled cameras are much more affordable. Aside from superior sensitivity of the cooling system, the uncooled system is dominating the market for surveillance and automobile segmentation due to its cost.

LWIR solution

On the other hand, in short distance surveillance applications, the uncooled system is the best choice, but the cameras have to be equipped with objectives that have the larger focal length to maintain resolution. Meanwhile, the F number will increase due to the same entrance aperture, which will dramatically reduce the amount of light for detection. In return, the uncooled system becomes insensitive. Thus, the cost is driven by increasing the aperture (larger lens), eventually, drives uncooled LWIR solution more expensive than cooled version.

Germanium is frequently used for LWIR lenses as its high refractive index in LWIR wave band; However, Germanium has large thermal drift which causes expected defocus with temperature change. Hyperion Optics provides sophisticated design that balance defocus and secure stable performance in consideration of defocusing attributes of the lens, by using ZnSe (8 times better thermal defocusing compare to Germanium)

In LWIR design, Hyperion Optics optical designers also conduct thorough calculation of what happens to the housing with the impact of thermal expansion. Aluminum is frequently used as housing, for example, a 20mm long aluminum housing will increase by 28 microns if the temperature increases for 60℃, the 28-micron change can be considered the same as the LWIR system’s depth of focus.

Hyperion Optics optical hyp design

At Hyperion Optics, we conduct both passive mechanical and passive optical solutions for the best to eliminate the thermal impact in thermalization system development. For a passive mechanical solution, we develop inner and outer cell separated by a spacer, geometrically precise machine the spacer with the right material to attain a thermal expansion equal and opposite to the combined effect of the lenses and rest of the housing over the whole temperature range. The spacer pushes the inner cell back to the right position to keep the lens in focus. Find out more by talking or writing to us for your current LWIR needs for our passive optical solution for your own LRIP Optics Project.

Our advantage of LWIR lens design and manufacturing:

Integration of ZnSe conic surface

The combination of refractive and diffractive lenses for maintaining low F number and Athermal pre-parties without mechanical compensation need.

Chalcogenide material can be combined in design and manufacturing to approach the expected compensation for thermal expansion.

Other supplier products

	LWIR Lenses	LWIR lensplays a critical role in thermal imaging surveillance applications, beyond night vision capability, critical targets differentiation in po...
	Elliptical Mirror	Elliptical mirroris still a flat mirror, but the shape is cut into an oval, and the outer circle and the mirror into a 45 ° angle. When the ell...
	Parabolic Mirror	Hyperion Optics is a parabolic mirror manufacturerand offer custom off axis parabolic mirrors for use from the UV(200 to 400nm) to the IR (1to 40&m...
	Prisms Micro Prisms, Rhomboid Prisms, Penta Prisms, PBS, Custom Coating	Light Prism for Sale Hyperion Optics supplies a range of prisms to meet UV-Visible-NIR applications, with high surface quality and tight tolerance...
	Germanium Lenses	In the range of 2-12 μm, germanium is the most commonly used material for the production of spherical lenses and windows for high efficiency inf...

Same products

	Fuji Electric FRN5.5VG1S-4 powder inverter	Seller: 840499	technical Specification Manufacturer: Fuji Electric Series: FRENIC-VG Model: FRN5.5VG1S-4E Applic...
	Microscope Objective Lens	Seller: Shenzhen Canrill Technologies Co., Ltd	Microscope Objective Lens Suitable for ITO, particle detection, wafer inspection Infinity opt...
	DMD Lithography Lens	Seller: Shenzhen Canrill Technologies Co., Ltd	DMD Lithography Lens We have been in close cooperation with LDI (Laser Direct Imaging) manufactu...
	8k Line Scan (57.4mm) Telecentric Lens	Seller: Shenzhen Canrill Technologies Co., Ltd	8k Line Scan Lens Suitable for large format Area Scan Camera Line Scan Camera 16Kx3.5μm, 8Kx7...
	16k Line Scan (82mm) Telecentric Lens	Seller: Shenzhen Canrill Technologies Co., Ltd	16k Line Scan (82mm) Telecentric Lens Specially designed for large image circle up to 82mm in le...