Lighting Imaging Examples for the Metal Parts Industry
- Inspection of Engraved Characters on Metal Blocks
- Visual Inspection of Metal Parts
- Inspection of Damage in Aluminum Sheets
- Shape Inspection of Screws
- Inspection of Engraved Text on Satin Metal Surfaces
- Paint Inspection of Galvanized Steel Sheets
- Inspection of Engraved Text on Metal Connector Hoods
- Shape Inspection of Knurled Screws
- Magnetic Particle Inspection of Metal Parts
- Inspection of Grease Application on Bearings
- Inspection of Grease Application on a Gear Part
- Visual Inspection of Satin Metal Plates and Engraved Characters
- Surface Inspection of Metal Machined Parts
- Robot Picking/Positioning of Metal Parts
Inspection of Engraved Characters on Metal Blocks
Images captured using a dome light. Because the entire surface is illuminated uniformly, it is difficult to emphasize only the engraved characters.
By using a low-angle ring light that illuminates the workpiece almost horizontally, the influence of the surface finish can be minimized, making it possible to highlight only the engraved characters.
| Type of inspection | Character recognition |
|---|---|
| Workpiece | Metal blocks |
| Before | LED Dome Light |
| After | LDR2-132RD2-LA |
| Result | Extract only the engraved text |
Lights used for the imaging
-
Low-angle Ring Light LDR2-132RD2-LA
- Extract scratches and engravings with surface irregularities
- Illuminates from a steep low angle
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Visual Inspection of Metal Parts
It is difficult to evenly illuminate the slanted exterior.
It is possible to evenly illuminate the slanted exterior .
| Type of inspection | Visual Inspection |
|---|---|
| Workpiece | Nut of bearingsト |
| Before | LED Ring Light |
| After | FPR-136RD2 |
| Result | Possible to illuminate the exterior |
Lights used for the imaging
-
Low-Angle Ring Light FPR-136RD2
- Direct uniform, diffused light onto the center of the workpiece from a low angle
- We offer a wide range of lighting solutions tailored to your specific needs
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Inspection of Damage in Aluminum Sheets
Due to reflection from the hairline finishing surface, it is difficult to form an image of the damage.
Surface reflection is reduced and a clear image of the damage can be made .
| Type of inspection | Visual inspection |
|---|---|
| Workpiece | Aluminum sheets (hairline finishing) |
| Before | LED Bar Light |
| After |
LDL2-74X30RD Precise illumination angle and direction |
| Result | Extracts only the damage |
Lights used for the imaging
-
Bar Light LDL2-74X30RD
- Bar Light featuring surface-mount LEDs
- Extensive lineup of 141 models
- Freely adjustable illumination direction and angle
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Shape Inspection of Screws
The outline of the threaded section appears slightly blurred.
The outline of the screw threads is clearly captured .
Lights used for the imaging
-
Flat Light TH2-63X60SW-PM
- Provides highly directional diffuse illumination
- Available in a wide range of emitting surface sizes
- Ideal for extracting workpiece contours
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Inspection of Engraved Text on Satin Metal Surfaces
Engraved characters are difficult to recognize.
The engraved text is clearly imaged .
Lights used for the imaging
-
Flat Light TH2-150X150SW-CR35
- Flat Light with a Camera Opening at the Center of the Emitting Surface
- Provides diffuse illumination coaxially with the camera
- Provides highly uniform illumination over a wide area
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Paint Inspection of Galvanized Steel Sheets
It is difficult to distinguish peeling defects from the rough surface texture of the workpiece.
Diffuse illumination with a dome effect creates a more uniform surface appearance, making peeling defects visible .
Lights used for the imaging
-
Dome Light HLDN-300SW
- Provides uniform diffuse illumination for long workpieces with a dome effect
- Custom-designed to accommodate multiple cameras
- Contributes to space-saving production line designs
This is a made-to-order product.
Please contact your sales representative for more information.
Inspection of Engraved Text on Metal Connector Hoods
It is difficult to read the text engraved on the surface.
Effect from the surface unevenness is reduced and a clear image of the engraved text can be made .
| Type of inspection | Character recognition |
|---|---|
| Workpiece | Connector hoods |
| Before | LED Bar Light |
| After | LFV3-50RD（A） |
| Result | Emphasizes the engraved text |
Lights used for the imaging
-
Coaxial Light LFV3-50RD（A）
- Provides uniform diffuse illumination coaxially with the camera
- The diffusion effect can be customized freely
- The lineup also includes the LFV3-G Series ,compatible with high-resolution cameras
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Shape Inspection of Knurled Screws
With a Flat Light, the emitted light wraps around the workpieces,
making it difficult to emphasize the edges.
It prevents the emitted light from wrapping around,
allowing for the edges to be emphasized
.
Lights used for the imaging
-
Coaxial Light MFU-34X30BL2
- Provides highly collimated illumination using proprietary lighting technology
- Allows the focal point to be adjusted to match the imaging lens
- Ideal for dimensional measurement, scratch inspection, and wrinkle inspection requiring high precision
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Magnetic Particle Inspection of Metal Parts
High-output UV lighting enables fluorescent observation of scratches.
High-output UV lighting enables fluorescent observation of scratches.
By using an optional filter, you can
capture images with enhanced contrast.
Lights used for the imaging
-
UV Light LDL-71X12UV3-365-N
- Features high-output UV LEDs
- Available in Two Types: Narrow and Wide
- We can manufacture shapes tailored to your specific application
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Inspection of Grease Application on Bearings
With white light, it is difficult to capture
the condition of the grease application.
High-output UV illumination
enables fluorescence inspection
.
Using an optional filter allows higher-contrast imaging.
Lights used for the imaging
-
UV Light LDR2-100UV3-365-W
- Features High-Output UV LEDs
- Also available in a narrow beam type (LDR2-100UV3-365-N).
- Custom shapes are available to suit your application
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Inspection of Grease Application on a Gear Part
With white light, it is difficult to capture the application of the grease on the uneven surface.
With UV light, the application of the grease can be observed because of emitted fluorescent light .
Lights used for the imaging
-
UV Light LDL-138X12UV3-365-W
- Up to twice the output of the previous UV2 Series
- Supports overdrive for faster inspection speeds
- Suitable for a wide range of inspection applications including fluorescence inspection, coating inspection, and flaw detection
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Visual Inspection of Satin Metal Plates and Engraved Characters
Engraved characters are difficult to image.
Uniform illumination of wide satin surfaces for
clear ID mark imaging
.
Lights used for the imaging
-
Diffuse Bar Light LB-300X150SW
- Provides uniform diffuse illumination from a wide emitting surface
- Extensive lineup of 338 models
- Also available: High-output models with Overdrive support
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Surface Inspection of Metal Machined Parts
Not uniformly illuminated.
The cutting marks on the machined surface stand out.
Uniformly illuminated to capture images with
no cutting marks visible
.
Lights used for the imaging
-
Diffused Bar Light LB-700X150SW
- Provides uniform diffuse illumination from a wide emitting surface
- Extensive lineup of 338 models
- Also available: High-output models with Overdrive support
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Robot Picking/Positioning of Metal Parts
Uneven lighting overall and unable to
capture images with uniform brightness.
Uniform brightness across the entire image.
Lights used for the imaging
-
Diffuse Bar Light LB-600X150SW
- Provides uniform diffuse illumination from a wide emitting surface
- Extensive lineup of 338 models
- Also available in high-output models with Overdrive support
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
MACHINE VISION LIGHTING SELECTION GUIDE
"We want to achieve stable and reliable image inspection."
"We're not sure what kind of imaging is possible."
"We don't know how to choose the right lighting."
If these challenges sound familiar, this guide is for you.
We've prepared a guide that clearly explains the fundamentals of machine vision inspection and lighting selection.
Whether you're new to machine vision or looking to strengthen your knowledge, this guide covers the essential points in an easy-to-understand format.
Learn why there are so many different types of machine vision lighting, why selecting the right lighting is critical to inspection performance, and how lighting affects imaging results.
The guide includes illustrations and real imaging examples to help you understand the concepts.
Download your free copy using the form.
