In camera module testing, the ideal approach is to base the setup on the module’s nominal focal length. However, this often requires several meters of test distance, which makes the test enclosure excessively large and prevents the chart from filling the field of view. Relay lenses extend the image distance and magnify the image, enabling the chart to fill the FOV within a manageable space, fully meeting test requirements.
When selecting a relay lens, attention should be paid to:
Matching the FOV of the tested module
Determining the MDR and chart size (WDC)
Ensuring entrance pupil compatibility
▋ Product Features
Reduce Space & Cost
Conventional test setups under large object distances require oversized test ranges and large charts. Relay lenses enable testing within smaller spaces, shortening the test distance and reducing chart size, significantly lowering overall costs.
Improve Test Reliability
Relay lenses not only ensure that imaging performance matches real-world shooting conditions but also minimize random errors and uncontrollable factors under standardized environments, enhancing test credibility.
Enhance Production Efficiency
Relay lenses are widely used in camera module testing, reducing equipment footprint, increasing efficiency, and lowering total production costs.
▋ Model Selection
| Wavelength (nm) | Max FOV (°) | MDR (mm) | Focal Length (mm) | Max Distortion | Entrance Pupil (mm) | Simulation Range (mm) |
| 420~940 | 45 | 10 | / | 0.45% | 18 | 300~∞ |
| 420~940 | 45 | 40 | 452 | 0.30% | 18 | 300~∞ |
| 420~940 | 88 | 20 | 355 | 0.50% | 4 | 300~∞ |
| 420~940 | 88 | 20 | 349 | 1.00% | 4 | 300~∞ |
| 420~940 | 90 | 9 | 616 | 0.25% | 5 | 300~∞ |
| 420~940 | 90 | 10 | 415 | 1.00% | 4 | 300~∞ |
| 420~940 | 90 | 10 | 355 | 0.90% | 4 | 300~∞ |
| 420~680 | 90 | 12.3 | 190 | 0.50% | 4 | 300~∞ |
| 420~680 | 90 | 17 | 1043 | 0.20% | 4 | 300~∞ |
| 420~940 | 90 | 40 | 485 | 0.90% | 5.5 | / |
| 420~940 | 116 | 10 | 275 | 20.00% | 4.5 | 300~∞ |
| 420~940 | 120 | 7 | 300 | 2.50% | 4 | 300~∞ |
| 420~940 | 125 | 11 | 189 | 0.20% | 4 | 700~∞ |
| 420~940 | 130 | 6 | 234 | 15.00% | 4.5 | 300~∞ |
| 420~940 | 130 | 6 | 300 | 30.00% | 4 | 500~∞ |
| 420~680 | 130 | 18 | 381 | 20.00% | 3 | 300~∞ |
| 420~940 | 130 | 19 | 465 | 30.00% | 5 | 400~30000 |
| 420~940 | 150 | 9 | 200 | 60.00% | 5 | 300~∞ |
| 420~940 | 130 | 9 | 177 | 35.00% | 5 | 400~∞ |
| 420~1100 | 8 | 150 | 102 | 0.04% | 4 | 500~∞ |
| 420~1100 | 20 | 80 | 90 | 1.80% | 4 | 500~∞ |
