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Product Description

λ/4 flat first surface mirror (front surface mirror) with enhanced aluminum coating for scientific and engineering applications. Superior to regular first surface mirrors when used under magnification.

Product Details

Custom optics are sometimes advertised as not only possessing high accuracy, but also as inexpensive; as if both were simultaneously achievable. In the world of optics, you get what you pay for. λ/4 wave first surface mirror glass offers a superior quality compared to other first surface mirrors on the market. λ/4 flatness is achieved by polishing float glass down to a flat surface, then coating with aluminum and the protective overcoat. Typically, what most of our competitors offer is simply on float glass, which is 4-6λ per inch. To the naked eye, the two mirrors look the same, but the quality of the λ/4 is immediately noticeable under magnification. The production of a high-quality optical component is an exacting process, requiring a high level of skill, quality equipment, and close attention to detail.


  • λ/4 per inch flatness
  • 5mm thickness
  • 96% reflective
  • Shipped with protective laminate over coating
  • Manufactured in the USA
  • Quantity discounts available
  • Same day shipping
  • International shipping
  • Ideal for research labs, engineers, commercial manufacturers, and government projects.


  • Scientific equipment
  • Labratory experimentation
  • Aerospace engineering
  • Optics, astronomy, physics, lasers
  • Barcode scanners
Front Surface Mirror

λ/4 Wave Glass Front Surface Mirror


Enhanced Aluminum Wave Chart

Frequently Asked Questions

We make sure the edges are sanded so they’re not sharp.

To prevent scratching, you should use 50% Isopropyl Alcohol and Kimwipes. Do not use microfiber wipes or paper towels, as they may cause scratches.

Our size tolerance is typically +/- 1/16″. Please contact us for a custom quote if you need a higher level of accuracy.

We make sure all shipments are carefully packaged with styrofoam and bubble wrap and fully insured.

We offer international shipping via FedEx, which is the best way to ship fragile parts overseas with insurance. Shipping costs are calculated automatically when checking out online. Duties and taxes are billed separately by FedEx on delivery.

Yes, we sell Precote 33, which is a spray paint which creates a removable laminate on the surface of the mirror.