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Infrared Filter

For infrared applications, Eureca offers the LP-750. This is in a better price-performance ratio than the commonly used IR glass filters. It consists of a plastic polymer with optically polished surfaces, which also allows the use of the filter in imaging applications directly in the beam path.

This type of filter blocks the visible light up to an edge position of 750nm and infrared light of higher wavelength is transmitted with high transparency. This makes it ideal for high-power LED lighting applications with wavelengths around 850nm or 880nm.


To avoid reflections, the LP-750 can also be mounted directly on CCD or CMOS sensors. Furthermore, in addition to the standard version, it is also available for lighting purposes with an anti-reflective coating.

Another advantage of this filter is its simple form of processing: For custom blanks, for example, it can be scratched with a sharp knife and then broken. For larger quantities, we offer a processing by laser cutting, which (almost) any blanks can be realized.

The LP-750 is available in 4 different thicknesses. The following standard sizes are always available from stock. Different sizes have a delivery time of 1-2 weeks.

Part designation 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
Test Unit Values
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
Hardness DIN 53456 N/mm² 175
Thermal
Properties
Test Unit Values
Vicat-Heat stability – Vicat
(3 mm thick)
DIN 53460 °C 115
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
Test Unit Values
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
Test Unit Values
Specific gravity DIN 53479 g/cm³ 1,18–1,19
Water absorption bei 20°C in 24h % 0,17

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Last update: 2019-18-06