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To order standard configurations of Nightshield filter material, please fill out the PDF order form provided below and fax it to us at 206-273-4164. For assistance, you can call us at 206-281-5714 or email lbenito@korry. Also contact us for any special filtering requirements you may have.
We also provide a PDF of technical guidelines for customers who want to cut or mill Nightshield material. For more information about thickness specifications and inspection criteria, please scroll down.
 Order form for standard Nightshield filter material
Cutting and milling Nightshield filter material
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Standard cut-to-dimension filter specifications and inspection creiteria for Nightshield filter material
Korry offers Night Vision Compatible Filters cut to specific standard formats. These cut-to-dimension formats include squares and rectangles (with cornered radii) as well as circles. We offer these cut-to-dimension formats with dimensional tolerances of 0.13 mm (0.005"). Furthermore, the thickness and thickness tolerance of most standard Nightshield filters are available from 0.76 mm to 2.54 mm as described in Table 1 (English units are in parentheses).
Table 1: Standard thickness and tolerance
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| Thickness |
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Tolerance |
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| 0.76 mm (0.03") |
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-0.13 mm/+ 0.26 mm
(-0.005"/+0.01") |
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| 1.02 mm (0.04") |
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-0.13 mm/+ 0.26 mm
(-0.005"/+0.01") |
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| 1.52 mm (0.06") |
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+/- 0.26 mm (+/- 0.01") |
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| 2.03 mm (0.08") |
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+/- 0.26 mm (+/- 0.01") |
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| 2.54 mm (0.10") |
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+/- 0.26 mm (+/- 0.01") |
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The inspection criteria depend on the intended application. For example, a filter intended to cover a floodlight component is inspected to Korry's General Test Procedure 54 (GTP 54). On the other hand, filters used over a display, requiring high image quality properties, are inspected to Korry's GTP-52. If you intend to cut filters from a standard cast sheet at your facility, Korry's Dash 80 inspection criteria are generally the best option. Korry will supply the inspection documents upon request.
Dash 80 - Assigned to filter sheets where the customer plans to cut small filters
GTP-52 - Assigned to filter sheets for High Image Quality Applications (Displays)
GTP-54 - Assigned to filter sheets for Floodlight, Utillity Lights or Tasklight Applications
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