Knight Optical can offer you custom and stock Plane Mirrors (general, λ/1 and λ/4), for use within 3D Mapping Applications in a range of materials such as Soda-lime float glass, white float glass, and BK7 glass.

We supply a range of Front Surface Mirrors for a range of applications.  All individually QA checked and metrology tested for quality to ensure parts meet customer specification.  Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.

Plane mirrors also known as front surface mirrors or first surface mirrors are used widely within Microscope applications. As stock we hold a number of general purpose, λ/1 and λ/4 with a range of up to 6 types of coatings such as Enhanced Aluminium, Ali/SiO₂ and Ali/Mgf². Our general purpose grade mirrors are made from good quality float glass and generally available in thicknesses of 1mm, 3mm and 6mm as standard.

Within microscope applications mirrors play a pivotal role in focusing the light underneath object to be inspected and used to internally redirect the image onto the human eye or a video device.  In some applications multiple mirrors can be used in conjunction with other optics such as Beamsplitters and Lenses. Typically for a traditional compound microscope, the light rays hit an angled mirror and reflect towards the specimen to be viewed.

Reflective objectives often used in conjunction with microscope applications use two mirrors to form an image or focus a laser in a variety of imagine or laser applications.  These are high magnified solutions with applications within the UV, Visible and IR wavelength ranges. These mirrors can also be coated for additional performance over a laser line or specified wavelength range.

Typical specs:
Material:                                          Soda lime float glass, white plate, BK7 or equivalent
Diameter Tolerance:                      +0/-0.2mm

Lengths/ width:                                ±0.3mm (≤100mm), ±0.5mm (>100mm)

Thickness:                                           ±0.25mm
Surface Quality:                              <60-40 scratch/dig for general purpose, <40-20 scratch/dig for λ/4
Flatness:                                               λ/4 for polished substrates

Stock sheet substrates.

1.1mmthk: 1λ over 10mm dia.  3/6mmthk: 2λ over 25mm dia.

Parallelism:                                      <3 arcmin

Coatings:

• Enhanced aluminium 94%R for visible applications.
• 99.9% dielectric for laser use in visible applications.
• UV aluminium for UV applications down to 180nm.
• 98.5% dielectric for laser use in the NIR applications.
• Ion plated silver for NIR-2000nm applications.
• Protected gold for 750nm to far infra-red applications

All our Flat Mirrors are fully inspected on their quality in our ISO 9001 certified, state-of-the-art Metrology laboratory, our ZYGO interferometer and Radius Slide tests for the form error, irregularity and TWE on flat and spherical surfaces, and Starrett AV300 provides video imaging for non-contact testing on small dimensions. This allows us to work to the highest QA standards and meet the tolerance specifications on these precision components.

Contact our technical sales team to discover how Knight Optical’s high quality Plane Mirrors and superior service can improve your instrumentation and supply chain experience.

UK, Europe, Asia & RoW: E-Mail info@knightoptical.co.uk  Tel +44 (0)1622 859444

USA & Canada: E-Mail usasales@knightoptical.com Tel +001 401-583-7846

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