T-R2L2S1N1 - Negative NBS 1963A Resolution Target, 2" x 2", 1 to 228 cycles/mm

• Frequencies from 1 to 228 cycles/mm (See List Below)
• Determine Resolution of an Optical System
• 2" x 2" (50.8 mm x 50.8 mm) Soda Lime Glass Substrate
• Positive and Negative Targets Available

Optical Specifications
Item #	R2L2S1P1	T-R2L2S1N1
Pattern	LR Chrome	Clear
Background	Clear	LR Chrome
Surface Flatness	≤15 µm
Chrome Optical Density	≥3.0

NOTES/SPECIFICATIONS:

1. MATERIAL: SODA LIME

2. COATING: OD3 LOW-REFLECTIVITY CHROME

3. FACE DIMENSION TOLERANCE: 0.4 mm

4. THICKNESS TOLERANCE: 0.2 mm

5. SURFACE FLATNESS: ≤15 µm

6. OPTICAL DENSITY: ≥3.0 AT 430 nm

7. R2L2S1N1 IS A NEGATIVE TEST TARGET WITH CLEAR PATTERN AND DARK BACKGROUND 8. THE PATTERN IS NBS1963A TEST PATTERN WITH RESOLUTION FROM 1.0 LP/mm TO 228 LP/mm

Frequencies (cycles/mm)

• 1

• 1.6

• 2.5

• 4.0

• 6.3

• 10

• 16

• 25

• 40

• 64

• 102

• 161

• 1.1

• 1.8

• 2.8

• 4.5

• 7.1

• 11

• 18

• 29

• 45

• 72

• 114

• 181

• 1.25

• 2.0

• 3.2

• 5.0

• 8.0

• 12.5

• 20

• 32

• 51

• 81

• 128

• 203

• 1.4

• 2.2

• 3.6

• 5.6

• 9.0

• 14

• 23

• 36

• 57

• 91

• 144

• 228