[ Home ] [ View Basket ] [ Go To Checkout ] [ Help ] [ Contact Us ] [ Site Map ]
Knight Optical U.K. Ltd. = Optical Component Specialists
Search the Site
> Kotek > History > Components > Press > Opportunities > Locate > Have Your Say
Online Store
 > Lenses
 > Filters
 > Diffusers
 > Windows
 > Optical Flats
 > Mirrors
 > Beamsplitters
 > Prisms
 > Polarisers
 > Retarders
 > Gratings/ Graticules and Apertures
Other Services
 > Latest News
 > Useful Links
 > Mailing List
 > Add to Favourites
 > Email a friend
 > Terms & Conditions

01622 859444
Secured by Secpay
We accept these credit cards

Optical Flats

These high quality flat substrates are made from tree types of material, Zerodur, fused silica and LEGB. These Optical Flats can be used for interferometry i.e. checking the flatness of other surfaces from interference fringes (Newton's rings) which are seen when the surfaces are in contact, in monochromatic light. They can be used for high quality laser mirrors.
 

Knight Optical > Optical Flats > Zerodur type > Flat 1 side-Lambda/10

Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT

Bulk Discounts!
Where (B) appears next to a price below, bulk prices are available, click the (B) button to view!


PDFPart No.MaterialDiameter (mm)Thickness (mm)PriceQtyBuy
TYZ1900
Zerodur
19.05
3
£POA

TYZ2500
Zerodur
25
6
£POA

TYZ2600
Zerodur
25.4
6
£POA

TYZ3800
Zerodur
38.1
9
£POA

TYZ4000
Zerodur
40
9
£POA

TYZ5000
Zerodur
50
9
£POA

TYZ5100
Zerodur
50.8
9
£POA

TYZ6300
Zerodur
63
12
£POA

TYZ7500
Zerodur
70
12
£POA

TYZ10000
Zerodur
100
15
£POA

TYZ10100
Zerodur
101.6
15
£POA

TYZ12500
Zerodur
125
20
£POA

TYZ15000
Zerodur
150
25
£POA

TYZ20000
Zerodur
200
30
£POA

TYZ25000
Zerodur
250
40
£POA

TYZ30000
Zerodur
300
50
£POA

Knight Optical > Optical Flats > Zerodur type > Flat 1 side-Lambda/10
Specification 
Material:Zerodur, Fused silica, LEGB
Material Data :(see materials section)
Dimensional:+0.0/-0.2 mm
Thickness:+0.0/-0.2 mm
Scratch/dig10:5
Surface finish:<5 angstrom off pitch
Flatness face 1: λ/10 & over 95%
Flatness face 2:Commercial polish
Parallelism:<1 arcmin (or better if required)
 
 

Specific requirements
We can manufacture Optical Flats to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk

Options available
. Special Mirror and other coatings
. Other sizes i.e. squares, rectangles, and other diameters at short notice
. Other grades of flatness i.e. <l/20
. Flat polishing of second face

Technical Data Sheets
Are available for each filter (see materials section)

See also
Precision glass windows-BK7 type (λ/4)
Borosilicate windows


  
 
      . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
      Knight Optical (UK) Ltd
      Templetree House, Sandway Road, Harrietsham, Kent ME17 1HT. United Kingdom.
      Phone: +44 (0)1622 859444   Fax: +44 (0)1622 859555
      e-mail: info@knightoptical.co.uk   Web design by Smart ePos