Midwest Optical Systems

02/25/2026

Designed for extreme conditions, SiLWIR™ silicon protective windows combine superior durability with excellent LWIR transmission, making them ideal for thermography, defense, furnace inspection, surveillance, firefighting and industrial process control.

With proven dropball-tested strength, SiLWIR™ withstands vibration, impact and high temperatures with confidence. Plus, refined silicon manufacturing means short lead times and consistent availability.

Reliable protection for mission-critical LWIR systems. midopt.com/silwir

02/23/2026

SiLWIR™ pure-grade silicon protective windows offer a powerful alternative to germanium and chalcogenide glass for LWIR (8-12µm) applications – delivering the ideal balance of performance, durability and cost.

It has more than 2X the strength of germanium and features diamond-like carbon (DLC) durability and double-sided AR coatings. SiLWIR™ provides >80% peak transmission, excellent thermal stability up to ~200°C and long-term reliability in demanding environments.

Built for strength. Engineered for LWIR performance.

midopt.com/silwir

02/19/2026

Featuring a removable front window (AR-coated glass LE100-LP340 or acrylic LE100-AC380), the LE100 Lens Enclosure is compatible with most standard lenses and filters.

It's available in a set that includes an enclosure mount with built-in 5mm spacer plus 25mm, 10mm and 5mm extension tubes, accommodating lenses up to 42.5mm length and 39mm diameter. Additional extensions are available for longer lenses.

Rugged protection. Modular flexibility. Reliable performance. 🔗 midopt.com/accessories/le100-lens-enclosure

02/17/2026

Designed for tough conditions, the MidOpt® LE100 Lens Enclosure offers flexible protection for machine vision systems operating in harsh, dusty or wet environments.

✔ Anodized aluminum construction
✔ Removable front window (AR-coated glass or acrylic)
✔ Supports standard lenses and filters
✔ Modular extension tubes for longer lenses
✔ CS-mount compatible with built-in C-mount adapter

Keep your imaging system running at peak performance – no matter the conditions.

🔗 Learn more ➝ midopt.com/accessories/le100-lens-enclosure

02/11/2026

The MidOpt® Filter Mount Size Finder supports a wide range of leading lens brands, making it easy to find the right filter fit with confidence.

Supported brands include Qioptic, Computar, Fujinon, GOYO, Kowa, Navitar, Opto Engineering, Ricoh, Tamron, Theia, Pentax, Basler, Edmund Optics, and more.

Enter your lens make and model to quickly identify the correct filter mount size – no guesswork, just the right fit.

02/09/2026

Not sure which filter mount size you need? The MidOpt® Filter Mount Size Finder takes the guesswork out of selecting the right fit for your lens.

Simply enter your lens make and model, and the tool quickly identifies the correct thread size. Whether you’re working with C/CS-mount or DSLR lenses, you’ll find the exact filter size you need – fast and accurately.

✔ Simple and fast to use
✔ Supports a wide range of lens brands and models
✔ Ensures compatibility with MidOpt® filters

🔗 Learn more ➝ midopt.com/tools/filter-size-finder

02/05/2026

Guide light exactly where it’s needed. 💡

MidOpt® Light Pipes are custom-fabricated from glass, plastic, or fused quartz to efficiently direct and evenly distribute illumination within inspection systems. Available in cylindrical, square, rectangular, or hexagonal profiles – and in straight or tapered designs – they deliver uniform light for consistent imaging results.

🔗 Learn more ➝ midopt.com/custom-optics/light-pipes

Opticsv

Glass, plastic and fused quartz light pipes of various lengths and profiles are custom-fabricated to efficiently gather and distribute light to desired areas within an inspection system or to homogenize light and provide more uniform or evenly distributed illumination. Cylindrical, square, rectangul...

02/03/2026

Fine-tune your light path with accuracy. 💡

MidOpt® Wedges are precision-engineered prisms that deflect light by a specific angle or distance. Used alone or in pairs, they help align and steer beams with exceptional control. Available in custom sizes, shapes, and configurations to fit your optical system.

🔗 Learn more ➝ midopt.com/custom-optics/wedges

01/30/2026

What a great time at A3 in Orlando, FL! 👏

Inspiring speakers, great conversations and an amazing community made this event one to remember. We were excited to be a sponsor – and for those who survived the chilly golf weather, we hope you’re enjoying your MidOpt® ball and tees! ⛳❄️

It was great connecting with everyone – see you at the next show!

01/28/2026

Shape the path of light. 💡

MidOpt® Prisms are custom-engineered optical components designed to redirect, fold or split light within a system. They can optimize space, correct image orientation, or ‒ when paired with specialized coatings ‒ combine or separate light with precision and consistency.

🔗 Learn more ➝ midopt.com/custom-optics/prisms

Optics

Prisms are optical components that typically use several surfaces to redirect, fold, displace and/or transmit light. Produced on a custom basis, they can be used to fit an optical system into a smaller space, change the orientation of an image or, together with appropriate coatings, combine or split...

01/26/2026

Reflect performance where it matters. 💡

MidOpt® Mirrors are available in enhanced aluminum and dielectric types, offered in multiple thicknesses and configurations to meet your exact optical needs. Whether you need to reflect, transmit or block specific wavelengths, these mirrors can be provided in flat sheets or custom shapes for any system.

🔗 Learn more ➝ midopt.com/custom-optics/mirrors

Optics

01/22/2026

Divide and direct light with confidence. 🔦

MidOpt® Beamsplitters are engineered for reliable light control across visible to infrared wavelengths. Available in multiple thicknesses (0.5-3.0mm), with transmission/reflection ratios of 80/20, 50/50, and 30/70, and configurations including cube, plate, or pellicle designs. Each features an AR (anti-reflection) coating for optimal performance.

Custom configurations. Consistent results.
🔗 Learn more ➝ midopt.com/custom-optics/beamsplitters
Optics