Automated Imaging Inspection Solutions
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Relay Lens
- Consistently Find Defects
- Maximizing Product Reliability
- Increasing Production Efficiency
- Saving Testing Cost
Boost your production quality with automated vision inspection solutions- Relay Lens.
Our Hot-selling products
Vicoimaging®’s relay lenses are researched and designed by its registered brand Lontry®, whose product comes with state-of-the-art optical and imaging technology.
- 3D Computer Vision Algorithms
- Artificial Intelligence
- Big Data Analytics
RL09150B
MAX FOV: 150°
RL4045
MAX FOV: 45°
RL4090
MAX FOV: 90°
RL30120
MAX FOV: 120°
RL19130
MAX FOV: 130°
RL2288-398
MAX FOV: 88°
Why use relay lens?
Reducing Testing Cost
When the camera module is tested, you need a large test distance and a large target. If the relay lens is used, you can shorten the test distance and reduce the test chart, thereby reducing the test cost in the end.
Improving Test Credibility
Using relay lens in testing can ensure high-quality imaging and footage. What's more, due to the standard test environment, the impact of random errors and uncontrollable factors on the test results can be significantly reduced and the test credibility can be improved.
Increasing Production Efficiency
As relay lens is widely used in the testing of camera modules, the size of production and testing equipment related to camera modules has been well controlled, improving productivity and reducing costs. It also provides effective and feasible solutions for other applications that require testing of camera, such as laboratories.
Relay Lens Application
Relay lens is mainly used for camera resolution test. With the development of mobile camera, its application has been constantly extended. It has been used in vehicle, security, video conference equipment, smart home and other fields. In particular, it plays an irreplaceable role in the production and testing of wide-angle and long-focus modules.
Mobile Camera
On-board Camera
Security Camera
Video Conference Camera
Smart Home Camera
module focusing, and product terminal testing.
How to select relay lens?
Step1: FOV
The design FOV of a relay lens shall be slightly larger than the FOV of the camera module.
Step 2: Stallation
The parameter design of relay lens takes into account the support for installation structure, so the following three data should be considered when selecting a relay lens:
- MDR (the distance from the mechanical rear surface of relay lens to the camera viewpoint) of 6-40mm is suitable;
- WDC (the distance from the mechanical front surface (non-opticalsurface) of relay lens to the chart being tested) shall be usually 150-400mm;
- The maximum chart size that the test environment can support.
Step 3: Entrance Pupil Diameter
The entrance pupil diameter (EFL focal length/F.no focal number) of a product shall be smaller than the exit pupil diameter of relay lens.
WDV: The distance from the simulated camera module to the imaging position.
WDC: The distance from the relay lens object end to the test card.
What are required in a Typical Relay Lens
Test Environment
Wider Coating Range:
suitable for visible light and infrared light photographing
Customers have a demand for photographing at night with on-board cameras and security cameras. Therefore, the infrared relay lens is highly demanded. For the demand of infrared imaging test, Lontry has coated its main products with infrared antireflective coating, the wavelength is up to 940nm. Lontry's relay lenses are suitable for photographing in both visible light test and infrared light.
| Laboratory | Lontry Image Quality Test Laboratory V1 | ||
| Experimental Environment | Darkroom | ||
| Camera tested | FOV 180° IR 940nm | ||
| Experiment chart | Transmissive film chart | ||
| Contrast lenses | A: Lontry RL19130 coated relay lens; B: 130-degree non-coated relay lens | ||
| Experimental data |  |
 |  |
| Infrared light 940nm Photographing without lens Test chart | Infrared light 940nm A: Lontry RL19130 coated relay lens Test chart | Infrared light 940nm B: 130-degree non-coated relay lens Test chart | |
| Image data analysis | Compared with the direct photographing chart, the test chart of lens A is clearly visible. The test of lens B is failed. | ||
| Test Solution | Lens A - Lontry RL19130 coated relay lens works normally under IR940, while B relay lens can not. | ||
