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Part of the MicroBrite™ family of high performance, compact machine vision lights.
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Our DF196 Series delivers direct illumination at a low angle to cast shadows used to identify surface defects, embossed text, etc.
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This dark field ring light is more directional and less diffuse than the DF198.
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Available in 4 sizes with an intesity of 72kLux (working distance of 25mm with DF196-100)
Ring Lights - Dark Field
Products
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Part of the MicroBrite™ family of high performance, compact machine vision lights.
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Provides diffuse illumination at a low angle to cast shadows used to identify surface defects, embossed text, etc.
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This ring light is more diffuse and less directional than the DF196.
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Can be used to produce a bright field effect when the outer diameter is smaller than the working distance.
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Available in 4 sizes with an intensity of 47klux (working distance of 64mm with DF198-180).
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The DF241 is characterized as a Small Low Angle Dark Field ring light.
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Precisely aimed LEDs provide a very low angle of incidence, radial illumination pattern.
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A scratch on a sheet of glass is a good example of a defect that can be detected with a low-angle dark field illuminator.
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With a light intensity of 24kLux at a working distance of ½” (12.5mm), the DF241 is perfect for imaging problems limited to a small field of view.
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A 25mm field of view is standard with an optional field of view of 35mm.
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Available in a range of wavelengths from UV to IR.
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*Engineered to provide comparable optical characteristics to our previous RL1360.
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The DF242 is characterized as a Large Low Angle Dark Field ring light.
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Precisely aimed LEDs provide a very low angle of incidence, radial illumination pattern.
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A scratch on a sheet of glass is a good example of a defect that can be detected easily with a low-angle dark field illuminator.
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With a light intensity of 24kLux at a working distance of 1” (25mm), the DF242 is perfect for imaging problems with medium sized fields of view.
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A 35mm field of view is standard with optional fields of view of 45 and 70mm.
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Available in a range of wavelengths from UV to IR.
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*Engineered to provide comparable optical characteristics to our previous RL1660.
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The RL2115 is characterized as a Compact Aimed Dark Field ring light.
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Precisely aimed LEDs provide a specific and repeatable light pattern on the imaging plane.
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There are a wide range of wavelengths available from UV to IR.
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The RL3536 is characterized as an Aimed Dark Field ring light.
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Precisely aimed LEDs provide a specific and repeatable light pattern on the imaging plane.
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Provides up to 8.4kLux at a working distance of 3” (76mm).
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The light is available in a wide range of wavelengths from UV to IR.
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Diffuser and polarizer options are also available.
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The large inner diameter of the ring light can accommodate lenses up to 55mm in diameter.
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The light can also be ordered with an optional mounting ring.
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The RL3940 is characterized as a Folded Beam Dark Field ring light.
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Precisely aimed LEDs, along with an aluminum beam folder, provide a specific and repeatable light pattern on the imaging plane.
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The light provides up to 11kLux at a working distance of .6” (15mm).
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The RL3940 is available in a wide range of wavelengths from UV to IR.
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The folded-beam configuration provides dark field illumination in a compact 3.9” (100mm) housing.
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The housing’s large inner diameter can accommodate lenses up to 55mm in diameter.
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The light can also be ordered with an optional mounting ring.
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Characterized as a Dual Function Ring Light, the RL5064 is capable of both bright and dark field illumination with independent control (depending on control option).
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A wide variety of wavelengths may be specified from UV to IR.
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The large inner diameter of the ring light can accommodate lenses up to 55mm in diameter.
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The light can also be ordered with an optional 3 point mounting barrel.