T-R3L3S1N - Negative 1951 USAF Test Target, 3" x 3"

• 3" x 3" (76.2 mm x 76.2 mm) Targets Offer Resolution up to 4.4 µm per Line Pair
• Determine Resolution of an Optical System
• Conforms to MIL-S-150A Standard
• Positive, Negative, and Positive Reflective Targets Available

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. R3L3S1N IS A NEGATIVE TEST TARGET WITH CLEAR PATTERN AND DARK BACKGROUND 8. THE PATTERN IS USAF 1951 TEST PATTERN WITH RESOLUTION FROM GROUP -2 TO GROUP 7