MidOpt LP Series Filter LP389

Uniforce Product

Salient Features

LP389 Precision Multi-Layer VIS + NIR A/R Coated Glass Protective Window

Often referred to as a “sharp-cut” filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths.

Economical solution for isolating specific spectral regions
Peak transmission ≥90%
Anti-reflection coated for maximum transmission in VIS and NIR spectrums
Can be used with Shortpass Filters for a custom, fine-tuned Bandpass Filter
Double-side polished glass for exceptional parallelism and optical flatness
Exceptional surface quality; 40/20 scratch/dig
Available in wavelength ranges from 350nm to 1500nm

LONGPASS FILTER APPLICATIONS:
Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio. Longpass Filters are also commonly used in photography and astronomy.

LP389 anti-reflection coated windows are optimized for visible AND near-infrared transmission together, making them ideal for use with cameras that are required to operate 24/7, in 3D imaging, and in some LIDAR applications. The substrate material is optically ground and polished B270 crown glass. This results in distortion-free images and excellent transmission over a very broad wavelength range. An optional oleophobic top coat can also be provided.

MidOpt LP389 Trans Graphic

StablEDGE® design reduces angular dependency and minimizes short-shifting effects

Useful Range : 400-1100nm
Cut-on Wavelength 50% T : 380nm
Tolerance : +/- 10nm
Peak Transmission : ≥98%
Surface Quality : 40/20

MidOpt StablEDGE™ optical filters are specifically designed to be less susceptible to effects from angular shifting seen when optical filters are placed in front of short focal length (<12 mm) camera lenses.
StablEDGE™ filters take advantage of absorptive filter glass to form the leading
edge of the filter passband.This assures no shifting in this region, even when the
lens FOV exceeds 100°.StablEDGE™ designs are less angle-of-incidence sensitive, inherently more rugged, and are environmentally stable.