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Optical Flat

Optical Flats are used as a reference (test plate) against which the flatness of an unknown surface may be compared. Each piece is precision polished by our master opticians and tested on a interferometer to insure the surface accuracy. The secondary surfaces of our single surface flats are pitch polished to window quality for viewing the interference pattern. . The accuracy of an optical flat is measured in fractions of a reference wavelength, 589nm. We offer several levels of accuracy for our single surface flats: 1/4 wave, 1/6wave, and 1/10 wavePlease find our standard  optical flats  given in the below table.

· Material : N-BK-7 Optical Glass / Fused Quartz

· Accompanied by Flatness Inspection Report

· Inspection in Laser Fizeau Interferometer

· Reference Flat (»/20) traceable to NIST.

· Evaluation of Flatness with Licensed Quick

       Fringe Software

· Cosmetic Defects : According to US MIL Std

· Supplied in Wooden Box dz

Note: Special material and size are available upon request. AR coating  available on request.

Kindly contact us for  custom optics

Diameter  (mm)

Thickness (mm)

Part No

BK7

Part No

Fused Quartz

25

10-15

NIR-OFB-25

NIR-OFF-25

50

15-20

NIR-OFB-50

NIR-OFF-50

75

15-20

NIR-OFB-75

NIR-OFF-75

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contact Us

Nirmal Optronics

Plot # 26,27/Flat A2 - "Shree Enclave",
Car Nagar,
Behind Reliance Fresh on MPM St.
Subramani Nagar Main Road, Perambur
City: Chennai
State: Tamil Nadu
Country: India
Fax No: +91-44-25581282
Phone No: +91-44-25581282
Mobile No: +919003039922

 

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