CA-D Series High Performance LED Illumination Units
LED Illumination Units for Improved Detection Stability
Blue LED Light for High Precision Dimensional Measurements.
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Multi-angle Lights (Ring / Square): CA-DR-M / CA-DQ-M Series
Combines the principals of ring, dome and low angle light sources into one
Ideal on targets with changes in height needing multi angle
diffused or low angle lighting.
Example: Inside of a plastic cap
With standard lighting:
LED refl ection / imprint is seen by camera. |
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With multi-angle light
[Ring]:
Multi angle diffused light is radiated around the inner surface to give uniform illumination. |
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Spot Lights: CA-DP Series
LED Spot lights save on space, fi ber distance and provide lighting to a specifi ed point / area.
When spot illumination is used in combination with the coaxial macro lens, coaxial illumination of a target can be achieved at high magnifi cation.
Example: Registration marks
With standard lighting:
As specular and diffuse light components are received together, there is little difference in contrast between the background and registration mark. |
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With spot illumination:
When spot lighting is used in conjunction with the macro lens only specular refl ected light is allowed to pass into the camera via the lens. |
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Square Lights (Direct): CA-DQ Series
The square lights are made up of four bars lights, which can be individually controlled and positioned.
Illumination of a target can be freely controlled, by changing the angle and choosing which sides of the target should be lit.
Example: IC surface flaw
Bar Light: CA-DB Series
Indirect Lighting Eliminates Glare and Applies Illumination Evenly
For transparent, highly reflective, or plated surface
Lighting Technique Using a Bar-light
The bar-light illuminator applies uniform light on long targets.
Applying the light from an angle creates diffuse reflection,
enabling easy differentiation. If the surface is very glossy,
a polarizing filter is recommended.
Example: Defective Plating / Clear Sheet Width
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Direct Reflection:
The chip on the perimeter cannot be detected. |
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Bar Illumination:
The chip on the edge is clearly differentiated in white. |
Coaxial Vertical Light: CA-DX Series
Enhances the Edge of Imprinting Against a Reflective Surface
For highly reflective, plated or dented flat surfaces
Lighting Technique Ssing a Coaxial Vertical-light
The coaxial vertical illuminator applies light on the same axis as the lens. The contrast between dark and bright parts is captured and differentiated by allowing the reflected light from the glossy surface into the camera, while blocking the diffuse light at the edge of the imprint.
Example: Imprint on metal / Deformed surfaces
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Direct Reflection:
The dent in the surface of the package is not visible with normal lighting. |
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Low-angle Illumination:
The Coaxial light intensifies the flat package surface while making the dent appear darker. |
Low-angle Light: CA-DL Series
Sharpens the Contrast of Edges and Uneven Surfaces
Used for transparent targets or on low contrast surfaces.
Lighting Technique Using a Low-angle-light
The low-angle illuminator allows differentiation by applying light at an angle onto the edge of the surface.
Example :Detecing Flaws and Chips on a Rubber Washer
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Direct Reflection:
The chip on the perimeter cannot be detected. |
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Low-angle Illumination:
The chip on the edge is clearly differentiated in white. |
Dome Light: CA-DD Series
Indirect Light Allows Clear Images without Hot Spots
For uneven or curved surfaces
Lighting Technique Using a Dome-light
The dome-light illuminator casts indirect light from various directions. Since soft diffuse light can be applied uniformly over a target with an irregular shape, the surface condition can be kept uniform, making contrast of inspection points clear.
Example: Print on Foil / Hole on a Curved Surface
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Direct Reflection:
The light reflects irregularly, making recognition of the printing impossible. . |
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Dome Illumination:
The background glare is eliminated and only the printing is visible. |
Backlight: CA-DS Series
Utilising the Silhouette Enables High-accuracy Transparent Target Detection
For transparent material or liquid
Lighting Technique Using a Backlight
The backlight illuminator silhouettes the shape of the target using
the light passing through the target.
Example: Liquid Level
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Direct Reflection:
The light reflecting off the surface of the container creates interference. |
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Backlight Illumination:
The liquid level is captured as a shaded edge. |
Ring Light: CA-DR Series
General-purpose Lighting for Various Applications
Used to produce clear images with stable illumination on a variety of target shapes. The circularly arranged LEDs provide equal lighting suitable for many applications.
Blue LED lights are now available.
The short wave length characteristics of blue LED light make them an ideal choice for high precision dimensional measurements and other demanding applications.
Inverted High-frequency Light
These fluorescent illuminators use an inverter method and are excellent for image processing.
The large ring light provides optimal lighting for large-sized targets.
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