What are the opening hours?

Monday 8:30am - 5pm Tuesday 8:30am - 5pm Wednesday 8:30am - 5pm Thursday 8:30am - 5pm Friday 8:30am - 5pm

Knight Optical

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Harrietsham
Knight Optical

Bringing Quality Into Focus Global Leader in Precision Optical Components

15/01/2026

📦 With over 3,000 stock optics available for next-day dispatch, we're a reliable supply chain partner for many in fields ranging from engineering and manufacturing to university research.

Ideal for projects with quick turnaround times, prototyping and proof-of-concept work, our stock range of filters, windows, apertures, optical assemblies, laser optics, prisms, mirrors and more can help keep your project on track without long wait times.

13/01/2026

🌊 Optical components for subsea applications have to endure some of the toughest conditions.

From extreme pressure and low temperatures to saltwater corrosion and limited visibility, these optics have to be capable of withstanding harsh environments to ensure reliable performance and long-term durability.

Our stock and custom-made optics for subsea applications are designed to meet these demands, built with robust materials and specialist coatings to keep your systems operating at depth.

08/01/2026

🔬 With photonics, the possibilities are endless, which means not all optical components are the same. Sometimes, off-the-shelf just doesn't meet the needs of more complex applications.

That's why we offer custom-made optics, tailored to your exact requirements, including:

- Bespoke sizes
- Tighter tolerances
- Specific wavelengths
- Specialist coatings
- Fully assembled and ready to install.

06/01/2026

Fluorescence filters

When working with fluorescence microscopy, using the right filter to identify the right fluorophores is essential.

Pick the wrong one – for example, an FITC filter set for a DAPI-stained sample, and you'll end up with mismatched excitation wavelengths, preventing the fluorophore from glowing.

Our fluorescence filters cover a wide range of common fluorophores, from blue to far-red:

🔵 DAPI (blue)

🟢 FITC (green)

🟢 YFP (yellow/green)

🟠 TRITC (orange/red)

🔴 ROX (red)

🔴 CY5 (far-red)

If you’re working with something less common, we also provide custom Fluorescence Filters to match your specific requirements.

05/01/2026

Our stock and custom-made optical components are backed by a range of services that have been developed to meet industry-specific and environmental demands and streamline your supply chain.

They include:

✅ Metrology testing
✅ Quality assurance inspection
✅ Technical account management
✅ Custom packaging solutions
✅ Optical coatings

To find out how we can support your next project, visit our website.

19/12/2025

We had a special visitor at KO USA! 🐶

CJ’s dog Milo stopped by the office today and quickly became our temporary mascot, according to Emily S!

He brought smiles, tail wags, and some much-needed Friday joy to the team. Thanks for brightening up the office, Milo! 💜

17/12/2025

We’re hiring and it’s a good one 👀

Knight Optical is looking for a Digital Marketing Executive to join the team. If you enjoy ads, creating content, keeping campaigns moving and turning ideas into action, this could be right up your street.

You’ll be working across digital channels, supporting campaigns, and helping our marketing plans come to life in a hands-on, fast-moving environment.

Sound like your kind of role? Apply via Wise Monkey Recruitment and come and do great work with a great team. 🚀

Apply now: https://eu1.hubs.ly/H0qvmvX0

16/12/2025

🎄 Christmas Opening Hours 🎄

Please note that Knight Optical will be closed for the festive period from 24 December 2025 and will reopen on 5 January 2026.

We’d like to thank our customers and partners for their support throughout the year and wish you a very happy Christmas and New Year.

12/12/2025

The team embraced the festive dress code, proving that precision optics and seasonal knitwear can, in fact, coexist.

A nice way to mark the countdown to the end of the year and enjoy a lighter moment together.

11/12/2025

We’re proud to be advertise in the latest issue of Business Focus, where we share how our precision optical components and assemblies are helping to shape innovation across industries, from aerospace and defence to automation and photonics.

It’s always exciting to see our story showcased alongside other leaders driving progress and excellence in engineering and technology.

Check out the latest issue of Business Focus Magazine!

10/12/2025

The optical precision behind star trackers 🌌

For centuries, stars have guided travellers across oceans and continents, and today, the same principle helps satellites maintain orientation in space.

Modern-day star trackers work by capturing images of a star field and comparing them to onboard catalogues, calculating a spacecraft's exact orientation. It's a process that demands exceptional optical precision and calls for high-specification optical components.

From the lenses that capture starlight to the filters that ensure accurate readings, every component must perform seamlessly in the extreme conditions of space.

To find out more about star trackers and the optical components used in today’s systems, read our blog here: https://eu1.hubs.ly/H0q5_8q0

08/12/2025

Why are so many engineers and designers using zinc selenide for high-temperature applications? 🧐

When it comes to infrared optics, germanium is often the go-to material. But in high-temperature environments, another substrate is quickly becoming the superior choice.

While germanium's optical transmission begins to degrade at elevated temperatures, zinc selenide maintains reliable performance at much higher operating temperatures, making it the preferred choice for demanding thermal applications.

Beyond temperature resistance, it also offers excellent transmission in both the infrared spectrum and the visible range, which simplifies optical alignment in laser systems. It's particularly valued in CO2 laser applications, FLIR systems and thermal imaging.

Available from stock or custom-made to your specifications, our zinc selenide lenses are tested in our metrology laboratory to ensure they meet your exact requirements. 🔬

Address

Harrietsham
ME171AB

Opening Hours

Monday	8:30am - 5pm
Tuesday	8:30am - 5pm
Wednesday	8:30am - 5pm
Thursday	8:30am - 5pm
Friday	8:30am - 5pm

Telephone

+441622859444

Website

http://www.knightoptical.com/

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