Illumination Methods Using Modular Ring Lights
Machine Vision ring lights are most commonly used in one of these illumination methods, depending on the working distance (WD).
Low Angle for Short WD
The LMLX low angle light emits light with an angle of incidence at 45°. It can even create an efficient darkfield effect at close working distances.
Brightfield for Medium WD
The LMRX modular ring light without any accessory creates a highly diffuse and very bright light, suited for matte surfaces and fast moving objects.
Brightfield for Large WD
The ZVZF1 ring light emits light with up to 150,000 lux illumination intensity, thus creating a brightfield on large working distances.
Dark Field for Short Working Distances
The LMFX dark field illumination emits diffuse light with an angle of incidence of 60 degrees. Thanks to the particularly flat light guide, surfaces can be displayed with high contrast.
LMLX Low Angle Light
The LMLX low angle light is a combination of the LMRX modular ring light and a ZMRG low angle accessory that allows an angle of incidence at 45°.
This vision ring light is ideal for inspecting features on shiny parts and highlighting edges, indents, protrusions and scratches. Applications for this product includes the inspection of dot-peen marked and several types of DPM codes.
This vision ring light is ideal for inspecting features on shiny parts and highlighting edges, indents, protrusions and scratches. Applications for this product includes the inspection of dot-peen marked and several types of DPM codes.
Illuminated Features
Improper illumination – the dot-peen marked code cannot be read.
Illuminated with LMLX low angle light – the dot-peen marked code can be read properly.
LMFX Dark Field Illumination
The LMFX dark field illumination combines the LMRX ring light with the ZMRG dark field attachment to ensure precise surface inspection at a 60 degree angle of incidence. This configuration is particularly suitable for inspecting glossy and dark surfaces, where edges, bumps and scratches are clearly highlighted.
For example, the LMFX dark field illumination helps with quality control and fault detection in electronics production by increasing the contrast at the edges of the components during PCB inspection, thereby improving their visibility.
For example, the LMFX dark field illumination helps with quality control and fault detection in electronics production by increasing the contrast at the edges of the components during PCB inspection, thereby improving their visibility.
Testing of Glass Embossing: Dark Field vs. Low-Angle Light
Dark Field Accessory
1 mm working distance
20 mm working distance
50 mm working distance
Low Angle Accessory
1 mm working distance
20 mm working distance
50 mm working distance
LMRX Modular Ring Light
The LMRX series are a range of powerful light rings with a high density of LEDs, providing a wide illumination cone and a lot of diffusion. They cover a large field of view from working distances of 100 mm up to 600 mm. These square ring lights are suitable to illuminate objects with matte surfaces or fast moving objects which require high brightness.
Maximum Modularity
Starting from a diffuse LMRX ring light, the addition of a low angle accessory and dome accessory change the way the light is diffused and directed towards the target.
Lockable Control Panel
- Select the color of the ring light (white/infrared or red/cyan)
- Select the lighting sector
Rugged Design
- IP65 protection
- Aluminum heatsink for extended lifetime
Modular Design
- Easily mount dome, dark field and low angle accessories
- Rapid feasibility studies
Different Operating Modes
- Continuous or strobe mode
- Strobe overdrive for high speed applications
Comparison of the Different Machine Vision Ring Lights
| Working distance | Light source | Camera hole | Connection | Degree of protection | Beam angle | Mounting technology | |
|---|---|---|---|---|---|---|---|
| LMRX Modular Ring Light | Medium | Diffuse LEDs: White-infrared Red-cyan |
80 mm or 130 mm | M12 × 1; 5-pin M12 × 1; 8-pin (optional) |
IP65 | ±65° | ZMRX001 |
| LMLX Low Angle Light | Small | Diffuse LEDs: White-infrared Red-cyan |
80 mm or 130 mm | M12 × 1; 5-pin M12 × 1; 8-pin (optional) |
IP65 | ±65° | ZMRX001 |
| LMFX Dark Field Illumination | Small | Diffuse LEDs: White-infrared Red-cyan |
80 mm or 130 mm | M12 × 1; 5-pin M12 × 1; 8-pin (optional) |
IP65 | ±65° | ZMRX001 |
| LMRX Modular Ring Light | |||||||
|---|---|---|---|---|---|---|---|
| LMLX Low Angle Light | |||||||
| LMFX Dark Field Illumination |
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