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Knight Optical offers increase range of Plane Mirrors for Laser Distance Measurements

Date Announced: 17 Apr 2018

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

Plane mirrors also known as front surface mirrors or first surface mirrors are used widely within Laser Distance Measurement 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.

Laser Distance Measurement devices utilise the use of a laser beam to be able to determine the distance of an object. How optical mirrors are used in conjunction with these devices is that, a mirrored surface can be measured with a laser tracker; which will help determine the distance between the laser distance measurement and the mirror at its current location which would be the target in question for ascertaining its distance.

Typical specs:

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

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

Thickness:                             ±0.25mm
Surface Quality:                  Flatness: 

1.1mmthk:                            1λ over 10mm dia.

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

Options available:

  • Edging of stock mirrors to smaller diameters.
  • Stock mirrors can be machined to custom square or rectangular apertures or bespoke designs.
  • Various mounting options.
  • Larger 99% dielectric 145x100mm substrates are available from stock for custom larger sizes in 1mm, 3mm and 6mm thk.
  • Larger 94% enhanced aluminium sheets are available from stock for custom sizes.
    3mm and 6mm are available as1100x940mm, 1mm and 2mm are available as635x400mm sheets.

Mirror coatings:
UV applications:
Ali/MgF², R.avg>85%@180-650nm, AOI= 0°-45 °

Visible applications:
Enhanced Ali, R.avg>94%@450-650nm, AOI=0°-45° 
All-Dielectric, R.avg>99%@450-700nm, AOI=0°-45° 
NIR applications:
All-Dielectric, R.avg>98%@700-1064nm, AOI=0°-45° 
Ion-Plated Silver, R.avg>96%@450-2000nm, AOI=0°-45° 
NIR/ FIR applications:
Protected Gold, R.avg>97%@750-FAR IR, AOI=0°-45°

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


Knight Optical (USA) LLC
1130 Ten Rod Road
Suite D102
North Kingstown
Rhode Island 02852
Telephone: (001)401-583-7846
Fax: (001) 401-583-7851

E-mail: mike.sharpe@knightoptical.com

Web Site: https://www.knightoptical.com

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