Advanced Illumination · DARK FIELD
RL2115 Compact Aimed Dark Field Ring
AI-RL2115-625Compact ring, 251,000 Lux strobe, maximum intensity dark field in a small package
- Wavelengths available
- WHI, 395 - 880
- Supply voltage
- 24V DC
- Ip rating
- Not Rated

About the AI-RL2115-625
The RL2115 is a compact aimed dark field ring light for surface defect inspection in tight installations. Dark field geometry brings the light onto the surface at a low angle, so scratches, engraving and edges scatter light into the lens while the surround stays dark and defects stand out before any image processing.
At 57.2 g the head mounts on a moving axis or inside a guard where larger aimed dark field models will not fit. Precisely aimed LEDs give a specific and repeatable light pattern on the imaging plane, so contrast is consistent between parts and between stations.
The 625 nm, 660 nm and 880 nm builds draw 0.09 A at 24 V and the shorter wavelength and white builds draw 0.06 A, keeping demand low enough for a shared supply. A 2 m cable with a 105 degrees C rated PVC jacket and foil shield resists heat and electrical noise. The RL2115 range spans the ultraviolet to the infrared, operates from 0 to 60 degrees C, and holds L70 lumen maintenance at 50,000 hours.

Specifications
Maximum Illuminance / Irradiance
- Max illuminance typ klux
- 251 kLux @ 9.5mm (White,I3)
- Max illuminance min klux
- 213 kLux @ 9.5mm
- Max irradiance typ wm2
- 980 W/m² @ 9.5mm
- Measurement reference
- RL2115-WHII3 @ 9.5mm
Available Wavelengths
- Wavelengths available
- 395,470,520,625,660,880,WHI (⚠ 660nm discontinued)
Lens / Optics
- Lens type
- Aimed — no lens code
- Light conditioning options
- Diffuser (D), Polarizer (P)
- Working distance range
- 9.5mm (single WD spec)
Mechanical
- Outer diameter
- 54.5 mm
- Inner diameter
- 18.6 mm
- Height depth
- 17.3 mm
- Weight
- 57.2 g
- Ip rating
- Not Rated
- Mounting
- 2× M3 mounting screws
- Led aim angle
- 78°
- Lumen maintenance
- L70 = 50,000 Hours
Electrical
- Input voltage
- 24V DC
- Operating temp
- 0–60°C
- Current 24v uv group
- 0.06A (395nm)
- Current 24v vis group
- 0.06A (470,520,WHI)
- Current 24v red ir group
- 0.09A (625,660,880)
- Current controller max
- 0.045–0.067A max
- Std cable length
- 2m
- Cable spec
- 2m -0/+150mm, 105°C PVC jacket, foil shield with drain
- Supply voltage
- 24V DC
Control Interfaces
- Control options
- C1, C5, IC, I3, I3S, 24
- Analogue control
- Yes (IC/I3/I3S)
- Strobe capability
- Yes (I3/I3S/C5 Pulsar)
- Connector options
- Flying leads (std); M12 optional (IC,I3,I3S,24V); M8 optional (IC,I3,I3S,24V)
- Compliance
- CE, RoHS, IEC 62471
Optical
- Wavelength / colour
- White, 395, 470, 520, 625, 880 nm
- Beam
- Aimed dark field
- Intensity
- Ultra
- Irradiance
- 251,000 Lux
Environmental
- Operating temperature
- 0 to +60°C
Application
- Applications
- Inspection / Machine Vision
Request a quote or talk to an applications engineer
Tell us about your application and we will confirm the right product and configuration, or specify a variant outside the catalogue.
