RL3940 Series
Folded Beam Dark Field Ring Light
The RL3940 is a Folded Beam Dark Field ring light. Precisely aimed LEDs, along with an aluminum beam folder, provide a specific and repeatable light pattern on the imaging plane. The folded-beam configuration provides dark field illumination in a compact 3.9” (100mm) housing.
The RL3940 Series provides up to 11 kLux at a working distance of .6” (15mm), and is available in a wide range of wavelengths from UV to IR.The housing’s large inner diameter can accommodate lenses up to 55mm in diameter. The light can also be ordered with an optional mounting ring.
CURRENT | COLOR | 24V Current | All Other Controls |
| 625, 660, 880 | 240 mA | 180 mA | |
| 395, 470, 520, WHI | 160 mA | 120 mA |
| OPERATING TEMPERATURE | 0 to 60°C |
| MASS | 246.8 g (8.7 oz) |
| INCLUDED CABLE | 2m long -0/+150 mm (80″ -0/+6″) – 105°C rated PVC jacket, foil shield with drain |
| PHOTOBIOLOGICAL SAFETY | Exempt Applicable Wavelengths: 880 Group 1 (Low-Risk) Applicable Wavelengths: 470, 520, 625, 660, WHI Group 2 (Moderate-Risk) Applicable Wavelengths: 395 |
| STANDARDS COMPLIANCE | CE, RoHS, IEC 62471 |
| IP RATING | Not Rated |
| LUMINANCE MAINTENANCE | L70 = 50,000 Hours |
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