T-R3L3S5P - Positive Concentric Circle and Crosshair Grid Target, 3" x 3"
- Concentric Circles and Crosshair Patterns Arranged in a Grid
- Four Different Concentric Circle Sizes and Five Different Crosshair Sizes
- Measure Resolution, Distortion, and Magnification of an Imaging System
- 3" x 3" (76.2 mm x 76.2 mm) Soda Lime Glass Substrate
-
| Optical Specifications |
| Pattern |
LR Chrome |
| Background |
Clear |
| 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: 0.5 mm
4. THICKNESS TOLERANCE: 0.2 mm
5. SURFACE FLATNESS: ≤15 µm
6. OPTICAL DENSITY: ≥3.0 AT 430 nm
7. R3L3S5P IS A POSTIVE TEST TARGET WITH DARK PATTERN AND CLEAR BACKGROUND
8. THE PATTERN IS AN ARRAY OF CROSSHAIRS AND CONCENTRIC RINGS
| Crosshairs |
| Crosshair Pattern |
Single or Double Line |
Length/Width |
Line Width |
| B1 |
Double |
500 µm |
6.25 µm |
| B2 |
Double |
500 µm |
12.5 µm |
| B3 |
Single |
500 µm |
50 µm |
| B4 |
Double |
500 µm |
25 µm |
| B5 |
Double |
500 µm |
100 µm |
| Concentric Circles |
| Circle Pattern |
R1
|
R2
|
R3
|
R4
|
R5
|
R6
|
R7
|
| A1 |
31.3 µm |
62.5 µm |
125 µm |
140.6 µm |
234.4 µm |
242.2 µm |
500 µm |
| A2 |
15.6 µm |
31.3 µm |
62.5 µm |
70.3 µm |
117.2 µm |
121.1 µm |
250 µm |
| A3 |
7.8 µm |
15.6 µm |
31.3 µm |
35.2 µm |
58.6 µm |
60.5 µm |
125 µm |
| A4 |
3.9 µm |
7.8 µm |
15.6 µm |
17.6 µm |
29.3 µm |
30.3 µm |
62.5 µm |
