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General Catalog Machine Vision Systems from KEYENCE

CA-D Series High Performance LED Illumination Units


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Features: LED Illumination Units
 

LED Illumination Units for Improved Detection Stability

Blue LED Light for High Precision Dimensional Measurements.

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Bar Light: CA-DB Series

Bar type LED unit

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

 

Direct Reflection:

Direction reflection

The chip on the perimeter cannot be detected.

 

Bar Illumination:

Bar type LED unit

The chip on the edge is clearly differentiated in white.

Coaxial Vertical Light: CA-DX Series

Coaxial vertical LED unit

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

 

Direct Reflection:

Direction reflection

The dent in the surface of the package is not visible with normal lighting.

 

Low-angle Illumination:

Coaxial illumination type LED unit

The Coaxial light intensifies the flat package surface while making the dent appear darker.

Low-angle Light: CA-DL Series

Low angle type LED unit

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

 

Direct Reflection:
 

Direction reflection

The chip on the perimeter cannot be detected.

 

Low-angle Illumination:

Low angle type LED unit

The chip on the edge is clearly differentiated in white.

Dome Light: CA-DD Series

Dome type LED unit

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

 

Direct Reflection:

Direction reflection

The light reflects irregularly, making recognition of the printing impossible. .

 

Dome Illumination:

Dome type LED unit

The background glare is eliminated and only the printing is visible.

Backlight: CA-DS Series

Backlight type LED unit

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

 

Direct Reflection:

Direction reflection

The light reflecting off the surface of the container creates interference.

 

Backlight Illumination:

Backlight type LED unit

The liquid level is captured as a shaded edge.

Ring Light: CA-DR Series

Direct ring type LED unit

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

Color processing technology

These fluorescent illuminators use an inverter method and are excellent for image processing.
The large ring light provides optimal lighting for large-sized targets.

New Topics and Guidebooks
Visual Inspection Guide Collection Machine Vision Academy Vol.6 New Machine Vision Guide book Vol.5 General Catalog
Visual Inspection Guide CollectionUnlock Inspection Secrets   Machine Vision Academy Vol.6Learn the Latest Techniques for Visual Inspection   New Machine Vision Guide book Vol.5Machine Vision Academy Vol.5: Intermediate   General CatalogJust released Get your copy today.
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