For applications in the infrared we offer the LP-750 filter material. The price-performance ratio of this product is much better than for the usually used IR filters made of glass. It consists of a plastic polymer with optically polished surfaces, which allows it to be used in imaging applications directly in the beam path.
Up to an edge position of 750nm the visible light is blocked and infrared light of higher wavelengths is transmitted with high transparency. Thus, the filter is optimal for applications with high-power LED lighting products, whose wavelength is at 850 or 880nm.
To avoid disturbing reflections, the LP-750 can be put directly on CCD/CMOS sensors. For purposes of illumination it is also available with an anti-reflective coating.
Another advantage of this filter is its simple way of processing: it can get slit to brake it. Another possibility is laser cutting which we offer at larger numbers. Herewith, (almost) every dimension can be realized.
The LP-750 is available in four thicknesses. The following standard sizes can normally be delivered from stock. Different sizes have delivery times of 1-2 weeks.
|Dimensions [mm]||Thickness [mm]|
|LP750-12,7R-1||12,7 mm round||1,0|
|LP750-25,4R-1||25,4 mm round||1,0|
|LP750-50R-1||50 mm round||1,0|
|LP750-50x50-0.5||50 x 50||0,5|
|LP750-50x50-1||50 x 50||1,0|
|LP750-300x150-0.5||300 x 150||0,5|
|LP750-300x150-1||300 x 150||1,0|
|LP750-300x150-2||300 x 150||2,0|
|LP750-300x150-3||300 x 150||3,0|
|Mechanical properties:||Tensile strength||DIN 53455||N/mm²||65 - 68|
|Compressive strength||DIN 53454||N/mm²||125|
|Flexural strength||DIN 53452||N/mm²||120|
|Impact strength||DIN 53453||kj/mm²||12|
|Modulus of elasticity||DIN 53457||N/mm²||3000|
|Elongation at break||DIN 53455||%||3 - 4|
|Thermal Properties:||Heat stability - Vicat
(3 mm thick)
|Forming temperature||°C||150 - 170|
|Coefficient of linear thermal expansion||VDE 304||mm/m°C||0,08|
|Specific heat||kj/kg K||1,46|
|Thermal conductivity||W/m K||0,186|
|Electric Properties:||Dielectric strength||DIN 53481||kV/mm||40|
|Volume resistivity||DIN 53482||kV/mm||1015|
|Dielectric constant||DIN 53453||3,4|
|Dissipation factor||DIN 53453||0,06|
|Other properties:||Specific gravity||DIN 53479||g/cm³||1,18 − 1,19|
|Water absorption||at 20°C in 24 h||%||0,17|