Dark field illuminators provide effective low-angle lighting to targeted regions. These machine vision lights enhance the contrast of surface features such as laser embossed or engraved marks or surface defects, and are particularly suited for applications such as BGA ball placement, reading laser-etched symbologies and inspecting surfaces with geometric contours.
Dark field illuminators use either a single tier of LEDs mounted at either 70º (DF 50 models) or 90º (DF 100, DF 150-1 models) to the optical axis, or three tiers of LEDs mounted at 75º to the optical axis (DF 150-3 models).
Illumination Example:
Embossed logo on a metal surface: Low angle illumination provides a high contrast image
Functionality:
DF 50
DESCRIPTION | TYPE | nm/K | CONT. CURRENT | STROBE CURRENT | mcd/cm2 |
DF-50, Red Continuous | NON-DIFFUSE | 660 nm | 69 mA | 6250 | |
DF-50, White Continuous | NON-DIFFUSE | 6500 K | 120 mA | 7000 |
Aperture Diameter: 2” (51 mm) Field of View: 0.70” (18 mm)
Stand Off: 0.30” (8 mm) Weight: 5 oz. (136 g)
Dimensions: H 0.38” (9.5 mm) x W 3” (76.2 mm) x D 3.5” (88.9 mm)
DF 100
DESCRIPTION | TYPE | nm/K | CONT. CURRENT | STROBE CURRENT | mcd/cm2 |
DF-100, Red Continuous | NON-DIFFUSE | 636 nm | 100 mA | 760 | |
DF-100, Red Continuous | DIFFUSE | 636 nm | 100 mA | 400 |
Aperture Diameter: 3.9” (100 mm) Field of View: 2” (51 mm)
Stand Off: 0.50” (13 mm) Weight: 9 oz. (256 g)
Dimensions: H 0.56” (14.2 mm) x W 5.5” (139.7 mm) x D 5.5” (139.7 mm)
DF 150
DESCRIPTION | TYPE | nm/K | CONT. CURRENT | STROBE CURRENT | mcd/cm2 |
DF-150-1, Red Continuous | NON-DIFFUSE | 636 nm | 100 mA | 340 | |
DF-150-1, Red Continuous | DIFFUSE | 636 nm | 100 mA | 410 |
Aperture Diameter: 4” (102 mm) Field of View: 3” (76 mm)
Stand Off: 0.50” (13 mm) Weight: 18 oz. (504 g)
Dimensions: H 0.56” (14.2 mm) x W 7.02” (178.4 mm) x D 7.02” (178.4 mm)
DF 200
DESCRIPTION | TYPE | nm/K | CONT. CURRENT | STROBE CURRENT | mcd/cm2 |
DF-200, Red Continuous | DIFFUSE | 636 nm | 200 mA | 170 |
Aperture Diameter: 8” (203 mm) Field of View: 3.9” (100 mm)
Stand Off: 0.50” (13 mm) Weight: 20 oz. (567 g)
Dimensions: H 0.56” (14.2 mm) x W 10” (254 mm) x D 10” (254 mm)
TITLE | DOCUMENT TYPE | SIZE |
Dark Field Illuminator Specification Sheet | Catalog | 690 KB |
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Dark Field Illuminator Configuration Guide | Catalog | 793 KB |
Dark Field Illuminator Drawings | Software | 1155 KB |