Lighting Imaging Examples for the Food Industry
- Imaging text on paper labels
- Imaging the Liquid Surface Level and text in PET Bottles
- Imaging the liquid surface level in large bottles
- Imaging the Appearance of Multi-Colored Workpieces for Color Determination
- Imaging text on aluminum bottle cans
- Imaging of Foreign Materials in Tea Leaves
- Imaging the Appearance of Food Packages
- Imaging the Appearance of Cans (Top Surface)
- Fluorescence Inspection of Printed Markings on Aluminum Can Bottoms
- Inspection of foreign materials in powdered coffee
- Moisture Content Inspection of Rice Grain
- Imaging the Appearance of Containers
- Imaging Foreign Materials Mixed in Food
Imaging text on paper labels
Converged light in the center interferes with stable inspection.
The whole thing is evenly and brightly illuminated, making it possible to take an image of the label text.
Lights used for the imaging
-
Ring lights SQR-56SW2
- Rings of bullet-shaped LEDs mounted on a square case
- Provides direct light at a low angle from an angled emitting part
- Provides direct light from the upper section
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the Liquid Surface Level and text in PET Bottles
It is difficult to capture a clear image of the liquid surface and the printed text
Liquid surface level and the printed text are clearly imaged.
Lights used for the imaging
-
Flat dome light TH2-140X105SW
- Achieved Further-Higher Luminance
- Rich Product Lineup
- Install freely to match your environment
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the liquid surface level in large bottles
It is difficult to capture the liquid level and the label position
The liquid surface level and the label position are clearly imaged.
Lights used for the imaging
-
Flat light TH2-500X500SW
- Flat light units with an emitting surface of up to 500 x 500 mm
- Supports large workpieces
- Secures a large inspection area
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the Appearance of Multi-Colored Workpieces for Color Determination
| Type of inspection | Visual inspection |
|---|---|
| Workpiece | Chocolate |
| Before | - |
| After | HPR2-200FC: Full color (RGB) type |
| Result | Enables multi-color determination |
Lights used for the imaging
-
Dome light HPD2-200FC
- Provides diffused light evenly through the dome-shaped reflective panel
- Achieved higher output than the conventional models
- Added two sizes and an infrared and full color (RGB) type
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging text on aluminum bottle cans
It is difficult to form an image of the text due to the influence of uneven illumination.
It is possible to illuminate the whole thing evenly to form an image of the text.
Lights used for the imaging
-
Dome light LDM2-90RD2
- Light emitted from the LEDs is transmitted through the light-guiding diffusion plate
- The uniformly diffused light from a wide emitting surface surrounds the whole workpiece
- Featuring our unique heat dissipation structure
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging of Foreign Materials in Tea Leaves
It is difficult to image foreign objects using white light.
Foreign objects can be imaged using infrared light.
| Type of inspection | Foreign materials inspection |
|---|---|
| Workpiece | Tea leaves |
| Before | LED dome light |
| After | LFXV-200IR860: Infrared Type |
| Result | Emphasizes foreign material |
Lights used for the imaging
-
Flat dome light LFXV-200IR860
- Recreates the effect of dome lights using thin case design
- Bright and clear field of view using new light-guiding plate
- Reduces image irregularities and moire due to the surface dot pattern
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the Appearance of Food Packages
Shadows from the lighting aperture obscure the center of the container, making imaging difficult.
Uniformly lights the container all the way to the bottom, enabling imaging of the container appearance.
| Type of inspection | Visual inspection |
|---|---|
| Workpiece | Food package |
| Before | LED dome light |
| After | LFXV-300SW |
| Result | Improved uniformity |
Lights used for the imaging
-
Flat dome light LFXV-300SW
- Recreates the effect of dome lights using thin case design
- Bright and Clear Field of View Using New Light-Guiding Plate
- Reduces image irregularities and moire due to the surface dot pattern
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the Appearance of Cans (Top Surface)
It is difficult to capture the texture of the top surface.
The printed ink transmits infrared light so that the texture of the top surface is evenly captured.
Lights used for the imaging
-
Flat dome light LFX3-100IR860 (Infrared)
- Recreates the effect of a Dome Light with a thin case design
- High output to match high-speed inspection
- Expanded product lineup: 28 models in total
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Fluorescence Inspection of Printed Markings on Aluminum Can Bottoms
With white illumination, it is difficult to detect the printed markings on the can bottom.
With a high-intensity UV light, fluorescence imaging is possible.
By using the optional filter, images can be captured with enhanced contrast.
Lights used for the imaging
-
Ultraviolet light LDL-138X12UV3-365-N
- Equipped with high-intensity UV LEDs
- Available in two types: Narrow and Wide
- Custom designs 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 foreign materials in powdered coffee
It is difficult to image foreign materials
It is possible to image the foreign materials in powdered coffee (imaged with hyperspectral camera)
Lights used for the imaging
-
SWIR / Hyperspectral Imaging Light
LDL-222X42CIR- We propose a wide range of applications with wavelength characteristics from visible light to near infrared (around 2500 nm)
- For imaging with a hyperspectral camera that requires high output
- The special halogen lamp achieves long life
- The unique optical design suppresses heat rays and minimizes damage to the inspected object
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Moisture Content Inspection of Rice Grain
It is difficult to distinguish differences in moisture content.
1450 nm illumination enables differentiation of rice grains with different moisture content.
Lights used for the imaging
-
IR light (convergent type) LN-200CIR
- The special halogen lamp achieves longer life
- The rod lens converges irradiation for imaging with an infrared line scan.
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging the Appearance of Containers
It is difficult to image the surface evenly.
The printed patterns on the surface are clearly captured.
| Type of inspection | Visual inspection |
|---|---|
| Workpiece | Food (Yogurt containers) |
| Before | LED ring light |
| After | LFX3-100SW |
| Result | Improves the uniformity |
Lights used for the imaging
-
Flat dome light LFX3-100SW
- Recreates the effect of a Dome Light with a thin case design
- High output to match high-speed inspection
- Expanded product lineup: 28 models in total
A wide variety of lighting shapes and wavelengths are also available.
Please contact your sales representative for more information.
Imaging Foreign Materials Mixed in Food
It is difficult to image the foreign materials using white light.
It is possible to image the foreign material using infrared light.
| Type of inspection | Foreign material inspection |
|---|---|
| Workpiece | Macaroni |
| Before | HPD2-200SW |
| After | HPD2-200IR860 |
| Result | Emphasizes the foreign material |
Lights used for the imaging
-
Dome light HPD2-200IR860
- Provides diffused light evenly through the dome-shaped reflective panel
- Achieved higher output than the conventional models
- Added two sizes and an infrared and full color (RGB) type
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.
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