T-R2L2S1N - Negative NBS 1963A Resolution Target, 2" x 2", 1 to 18 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 #	T-R2L2S1P	T-R2L2S1N
Pattern	LRa Chrome	Clear
Background	Clear	LR Chrome
Surface Flatness	≤15 µm
Chrome Optical Density	≥3.0

 

Frequencies (cycles/mm)

	• 1	• 2.2	• 5	• 11
	• 1.1	• 2.5	• 5.6	• 12.5
	• 1.25	• 2.8	• 6.3	• 14
	• 1.4	• 3.2	• 7.1	• 16
	• 1.6	• 3.6	• 8	• 18
	• 1.8	• 4	• 9
	• 2	• 4.5	• 10

NOTES/SPECIFICATIONS:

1. MATERIAL: SODA LIME

2. COATING: OD3 LOW-REFLECTIVITY CHROME

3. FACE DIMENSION TOLERANCE: 0.5 mm

4. THICKNESS TOLERANCE: 0.2 mm

5. SURFACE FLATNESS: ≤15 µm

6. OPTICAL DENSITY: ≥3.0 AT 430 nm

7. R2L2S1N 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 18 LP/mm