1-18, 50.8 x 50.8mm NBS 1963A Resolution Target Negative

Product Details Negative or Positive Patterns Complies With NBS Standard 1010A Frequency Range From 1-512 Cycles/mm NBS 1963A Resolution Targets utilize the National Bureau of Standards 1963A Resolution Pattern. The slides are ideal for precision optical testing. These slides have a frequency range from 1-512 cycles/mm. NBS 1963A Resolution Target slides are available in either positive (black pattern, clear field) or negative (clear pattern, black field). Each slide is boxed. Specifications General Type: Negative NIST Certification: No Changes in Frequency Steps: 1.1, 1.25, 1.4, 1.6, 1.8, 2.0, 2.2, 2.5, 2.8, 3.2, 3.6, 4.0, 4.5, 5.0, 5.6, 6.3, 7.1, 8.0, 9.0, 10.0, 11.0, 12.5, 14.0, 16.0, 18.0 Physical & Mechanical Properties Pattern Size (mm): 45.5 x 44.5 Dimensions (mm): 50.8 x 50.8 ±0.51 Thickness (mm): 1.50 Line Width Tolerance (μm): ±0.5 Optical Properties Coating: Vacuum deposited durable chromium pattern Frequency (lp/mm): 1-18 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Float Glass Optical Density OD (Average): ≥3.0 Surface Quality: 20-10 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×