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.

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.

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 opticslens 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 HYPdesignand manufacturing to approach the expected compensation for thermal expansion.

Other supplier products

	Gallium Arsenide Lenses	GaAs is semi insulator, which can be used in large power continuous CO2 laser system to replace the zinc sulfide in lens or mirror forms. GaAs is s...
	Fisheye Lenses	Typically fisheye lenswith good fisheye lens designhas a front lens group of a greater negative refractive power than an ordinary inverted telephot...
	Diffractive Optical Elements	Diffractive Optical Elements (DOEs) have complex microstructural surfaces to manipulate (or “shape”) and split laser beams in an energy...
	Dome	Sapphire Dome, Ge Dome, ZnS Dome, ZnSe Dome, Glass dome, hemisphere dome At Hyperion Optics, we have strict control of wall thickness variation sp...
	Magnesium Fluoride Lenses	CVD magnesium fluoride (MgF2-CVD) has good mechanical properties, chemical stability, impact resistance, great anti thermal fluctuations and radiat...

Same products

	Microcrystalline wax used for improving the flexibility of packaging materials	Seller: Syntop chemical Co.,Ltd.	Microcrystalline wax is a specialty wax extracted from petroleum. Its primary functions include t...
	288 Holes Plastic Plant Trays	Seller: Hebei Marshine New Material Technology Co., Ltd.	288 Holes Plastic Plant Trays 288 Holes Plastic Plant Trays of 288 holes are great for vege...
	plastic bag	Seller: Hebei Marshine New Material Technology Co., Ltd.	plastic bag If you are a plant lover, you may have heard someone suggest putting a over a pl...
	Seedling Tray Price Philippines - Marshine	Seller: Hebei Marshine New Material Technology Co., Ltd.	Seedling Tray Price Philippines - Marshine Seedling Tray Price Philippines - Marshine Find ...
	Seedling Trays	Seller: Hebei Marshine New Material Technology Co., Ltd.	Seedling Trays Wholesale South Africa - Marshine Our seedling trays are exported to South A...