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First Surface Mirror

Optical grade first surface mirror designed for science and engineering.
Precision cutting, fast shipping, and outstanding support at your fingertips.

A first surface mirror, also known as a front surface mirror, is an optical mirror which provides superior accuracy for engineering and scientific applications. Unlike a standard mirror, which has the coating on the back side, a first surface mirror provides a true reflection with no double image.

Discover The Mirror

Order Custom Size

Order Custom Size

We stock a large inventory of first surface mirrors, ready to cut them to the size you specify. Use our online calculator to order or call us for pricing and ordering. We ship fast, usually same or next day.

Benefits & Advantages

Benefits & Advantages

First surface mirrors have an enhanced aluminum mirror coating on the face of the glass that maximizes the amount of light reflected, minimizes distortion, and prevents a double image, also known as "ghosting."

Optical Grade Quality

Optical Grade Quality

The first surface mirrors have an enhanced aluminum coating with a silicone oxide overcoat to prevent scratching and oxidation. Strict standards and carefully selected glass substrate ensure industry leading quality.

Did you know?

Engineers and scientists who succeed with challenging projects do two things very well:

First, they find the industry experts who can provide them with the information and parts they need.

Choosing the correct products from the start will make or break a project and prevent unnecessary wasted time and expense.

Second, they purchase the materials from a reliable vendor that will actually produce the results. But you’re probably wondering:

“How do I find materials that actually work?”

We make that easy for you when it comes to finding the right mirror. First Surface Mirror is the only optical mirror company that offers exceptional knowledge, wide selection of optical mirrors, extensive technical documentation, as well as 60-day returns and inexpensive product samples.

Product Options


1λ first surface mirrors provide optical quality at an affordable price.

quarter wave

λ/4 flatness mirrors offer a polished substrate for higher accuracy.

Eigth Wave First Surface Mirror

λ/8 is superior for equipment using a high magnification.

Chemically Strengthened First Surface Mirror

Chemically hardened first surface mirrors offer superior strength.

ultraviolet first surface mirrors offer superior reflection in the 10-400nm range.

UV Enhanced FSM offers superior reflection for 10-400nm light.

acrylic fsm

Shatterproof & easy to cut. Hobby grade reflection for lighting effects.

Product Portfolio

Questions? We've Got Answers.

Do you ship outside of the United States?

Yes, we ship worldwide via FedEx and shipping is automatically calculated when you check out. Duties and taxes are billed separately on delivery.

Do you sell samples?

Yes, for your convenience we sell mirror samples (limit 1 per customer).

What's the largest size you can make?

The largest sizes we can make are: 72″x96″ for 1/4″ thickness glass and 49″x97″ for 1/8″ and 1/4″ acrylic

How likely is it that my glass will break in shipping?

We carefully package and fully insure all of our shipments. If it should arrive broken, please send us pictures of the box and broken glass and we will ship you a replacement.

What's the difference in quality between your products?

The glass is optical grade, so we recommend that over the acrylic for most applications. The 1/4″ glass is our best value–the added thickness of the glass provides a much better flatness than thinner glass.

Are the mirrors sharp?

We carefully sand the edges and corners with a wet belt sander to take off the sharp edge.

How should I clean them?

To maximum the life of the mirror coating, we recommend isopropyl alcohol 50% solution (lens cleaner). The best wipes for cleaning are Kimwipes, which is a specialty item you may not find in local stores.

How accurate is your cutting?

We typically cut to +/- 1/16″ (1.5mm) unless added accuracy is requested.

Do you offer metal coatings other than aluminum?

Aluminum provides the best reflection, durability, and quality for most applications. We receive a lot of requests for gold and silver first surface mirrors, and can manufacture them on request.

Silver coatings theoretically have good reflectance wavechart, but because silver is so reactive to the air and chemicals, often the real life results don’t measure up to the theoretical specification.

Gold coatings are non-reactive and have good reflectance across a large spectrum, but because gold is so soft it’s nearly impossible to clean the mirrors without damaging them. Gold coatings are also several times as expensive as aluminum, so they are generally cost-prohibitive for most applications.

Do you offer substrates other than float glass?

Soda lime float glass works flawlessly for most applications, but we can custom manufacture borosilicate glass mirrors, which have a better coefficient of thermal expansion. Additionally, we can coat polycarbonate and gorilla glass (chemically strengthened glass)

Our team of engineers are standing by to field your questions. We have the expertise to quickly and accurately answer any questions you have.

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