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MidOpt LP Series – LP171 Protective Window

Uniforce Product

Salient Features

LP171 Fused Silica Multi-Layer Vis A/R Coated Protective Window

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.


Protective Filters are designed to shield your lens and lighting from dirt, dust, liquids, impact and harsh environments without sacrificing image quality.

  • Economical solution to protect expensive lenses
  • Useful for imaging in ultraviolet (UV), visible (VIS) and near-infrared (NIR) spectrums
  • Available with a high-efficiency, anti-reflection coating to maximize transmission to 98% or more
  • Offered in both glass and acrylic
  • Exceptional surface quality; 40/20 scratch/dig





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.



MOUNT & SIZE OPTIONS: In-stock, ready-to-ship Protective Filters are available in Threaded Mounts, sizes M13.25 to M105; 25.4® C-Mount; Slip Mounts; or Unmounted. Custom shapes and sizes are available.

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> Learn More About How to Minimize the Effects of Short Shifting

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Fused Silica Protective Window LP171

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