MidOpt LP Series Filter LP171

Uniforce Product

Salient Features

LP171 Fused Silica Multi-Layer Vis A/R Coated 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%
StablEDGE® design reduces angular dependency and minimizes short-shifting effects
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.

LP171 fused silica protective windows are made from an ultra-pure, synthetic optical material similar to fused quartz. They offer extremely low thermal expansion, high-resistance to shock, superior scratch resistance and excellent optical properties. They perform well in high-temperature applications, having the ability to withstand temperatures of up to 1100° C. They are also chemical resistant and have superior transmission in the UV through near infrared spectral ranges. LP171 includes a durable broadband multi-layer anti-reflection coating to limit reflection losses in the visible and near-infrared spectrums.

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

Useful Range : 200-2300nm
Tolerance : +/- 10nm

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.