High Process Reliability
Various functional principles ensure high process stability, even with demanding materials.
Design Variety
Numerous designs cover all application cases, especially harsh ambient conditions.
Different Light Sources
Sensors in the visible and invisible spectral range of light are available.
Contactless Detection
Contactless detection of different surface finishes, sizes and colors of objects.
Light Sources at a Glance
wenglor sensors and machine vision products cover different wavelength ranges that move in both the visible and invisible spectrum. The sensors are available in numerous designs and offer different functional principles, light spot sizes and light sources, including variants with laser or LED.
Light Sources and Their Effect on Different Surfaces and Materials
Choosing the right light source depends heavily on the properties of the surface to be measured and the material. For example, red light often penetrates deeper into an object, while blue-violet light penetrates less deeply due to its shorter wavelength. Depending on the material, this effect may be stronger or weaker, making other light sources more suitable for certain applications. The following summary provides an overview of which light source is optimal for different surfaces and materials. Feel free to contact us for individual advice!
Dark to Deep Black Surfaces
Difficulty: Dark surfaces absorb red light. This causes less light to be reflected and makes detection difficult.
Solution: Sensors with blue light are better suited because the light penetrates less deeply into the test object.
Solution: Sensors with blue light are better suited because the light penetrates less deeply into the test object.
Glossy, Reflective Surfaces
Difficulty: These surfaces tend to reflect light strongly, which can cause interference.
Solution: Blue light sensors are the better choice here. Red light sensors are also suitable for certain applications.
Solution: Blue light sensors are the better choice here. Red light sensors are also suitable for certain applications.
Matt or Rough Surfaces
Difficulty: Dull and rough surfaces scatter the light more, making detection difficult.
Solution: Red light sensors are ideal because, despite the light scattering, enough light returns to the sensor to detect the test object.
Solution: Red light sensors are ideal because, despite the light scattering, enough light returns to the sensor to detect the test object.
Organic Materials
Difficulty: Organic materials vary greatly in their properties.
Solution: Due to the lower absorption of blue light, blue light sensors are particularly suitable for dark materials.
Solution: Due to the lower absorption of blue light, blue light sensors are particularly suitable for dark materials.
Objects of Different Colors
Difficulty: Different colors have different effects on light reflection.
Solution: Red light sensors are best suited to detect objects of different colors.
Solution: Red light sensors are best suited to detect objects of different colors.
Glowing Surfaces
Difficulty: Glowing surfaces mainly emit red light, which can make detection difficult.
Solution: Blue laser is more suitable for glowing objects, as the light penetrates less deeply into the test object.
Solution: Blue laser is more suitable for glowing objects, as the light penetrates less deeply into the test object.
Transparent Materials
Difficulty: Transparent materials are often translucent because they reflect little light.
Solution: Red or blue light sensors are suitable for detecting transparent objects.
Solution: Red or blue light sensors are suitable for detecting transparent objects.
Sloped or Curved Surfaces
Difficulty: These surfaces reflect light in different directions, which can make it difficult to detect theme correctly.
Solution: Blue light sensors are best suited as they allow for more accurate detection on irregular surfaces.
Solution: Blue light sensors are best suited as they allow for more accurate detection on irregular surfaces.
Difference between LED Light and Laser Light
LED Light
- LED light is electromagnetic radiation with different wavelengths visible to the human eye
- Light spot diameter increases with increasing range
- Detection of larger objects thanks to larger light spot
- Visible light beam for easy installation and setup
Laser Light
- Laser light is created by amplifying light through stimulated emission
- Strongly focused light into one beam, no scattering over long distances
- Small light point for high precision and exact switching points
- Even the smallest parts can be detected thanks to the minimal light spot
- Visible light beam for easy installation and setup
Applications of Various Light Sources in Industry
Length and Width Measurement of Parquet Planks or Wooden Battens
Challenge: During parquet production, planks must be checked for their exact width so that they can be laid cleanly later. The surfaces can vary greatly in brightness and gloss.
Solution: Two opposing triangulation laser distance sensors with red light reliably measure the width of wood surfaces, regardless of brightness and degree of gloss.
Solution: Two opposing triangulation laser distance sensors with red light reliably measure the width of wood surfaces, regardless of brightness and degree of gloss.
Leading Edge Detection of Furniture Parts Made of Plank Materials
Application Control of Luminescent Glues in Furniture Production
Challenge: When manufacturing furniture, it is important to check that the glue has been applied completely. Since the glue must not be visible on the end product, it must be transparent.
Solution: A luminescence sensor reliably detects the transparent glue track offset with luminophores to ensure the quality of the furniture.
Solution: A luminescence sensor reliably detects the transparent glue track offset with luminophores to ensure the quality of the furniture.
Stack Height Measurement for Cookies
Challenge: When fully automatic packaging of biscuits, the dark biscuit surfaces must be precisely measured in height so that they can be packaged efficiently.
Solution: To measure the dark organic objects, triangulation laser distance sensors with blue light are used, as the short-wave blue laser light does not penetrate as deeply into the material and thus a more accurate measurement is possible.
Solution: To measure the dark organic objects, triangulation laser distance sensors with blue light are used, as the short-wave blue laser light does not penetrate as deeply into the material and thus a more accurate measurement is possible.
Height and Width Control of Baked Goods
Position Detection of Butter Blocks
Double Layer Control of Coffee Capsules Before Filling
Challenge: Before filling capsules for coffee machines, it must be checked that only one capsule is in the trays of the multi-lane conveyors.
Solution: Triangulation laser distance sensors with red laser detect whether one or more capsules are in the trays. They also work reliably with capsules in different colors.
Solution: Triangulation laser distance sensors with red laser detect whether one or more capsules are in the trays. They also work reliably with capsules in different colors.
Clearance Control when Moving Bottles on Conveyors
Challenge: During the automated bottle filling and packaging process, it is important to ensure that the conveyor belt is free to allow smooth deposition of new packs.
Solution: Time-of-flight laser distance sensors with red laser enable reliable detection regardless of the color and shape of the bottles.
Solution: Time-of-flight laser distance sensors with red laser enable reliable detection regardless of the color and shape of the bottles.
Pick-and-Place Object Monitoring on Robot Grippers
Guidance of Robot Grippers for Roof Mounting in Car Assembly
Challenge: In the final assembly of passenger cars, glass roofs must be inserted into the bodywork to the millimeter. Painted, shiny or dark surfaces make exact positioning difficult.
Solution: Triangulation laser distance sensors with blue laser light are particularly suitable for detecting difficult surfaces, as the blue light does not penetrate as deeply into the surface and high accuracy is achieved.
Solution: Triangulation laser distance sensors with blue laser light are particularly suitable for detecting difficult surfaces, as the blue light does not penetrate as deeply into the surface and high accuracy is achieved.
Gap and Flush Measurement at Car Bodies
Challenge: Fully automated quality control of car bodies requires accurate gap and flush measurement, with varying paints, materials and transparent objects making measuring accuracy difficult.
Solution: 2D/3D profile sensors with UV light are ideal for measuring transparent objects such as windows or floodlights.
Solution: 2D/3D profile sensors with UV light are ideal for measuring transparent objects such as windows or floodlights.
Dimensional Accuracy Check on Plastic Profiles
Challenge: After the extrusion process, plastic profiles must be measured to the micrometer to detect contour errors and incorrect dimensions at an early stage.
Solution: For quality checking, 2D/3D profile sensors with red laser create 2D and 3D models of the light plastic profiles and evaluate them. Profile sensors with blue laser are suitable for dark profiles.
Solution: For quality checking, 2D/3D profile sensors with red laser create 2D and 3D models of the light plastic profiles and evaluate them. Profile sensors with blue laser are suitable for dark profiles.
Separation of Plastic Injection-Molded Parts
Challenge: Before packaging plastic injection molded parts, it must be ensured that the parts are separated and fed to the packaging unit in the correct position.
Solution: A reflex light barrier with red light reliably detects the presence of every plastic part, regardless of surface finish and color, so that it can fall into the packaging.
Solution: A reflex light barrier with red light reliably detects the presence of every plastic part, regardless of surface finish and color, so that it can fall into the packaging.
Contrast Marking Detection on Transparent Cosmetic Tubes
Challenge: To ensure the exact alignment of the cosmetic tubes before filling, the round tubes have contrast marks that must be reliably detected.
Solution: White light contrast sensors reliably detect contrast marks even on semi-transparent tubes. Thanks to the small, homogeneous and rectangular light spot, even very small objects are reliably detected.
Solution: White light contrast sensors reliably detect contrast marks even on semi-transparent tubes. Thanks to the small, homogeneous and rectangular light spot, even very small objects are reliably detected.
End of Foil Detection
Presence Detection of Packaging on Conveyor Belts
Height and Angle Measurement of Ice Cream Cups
Collision Protection for Shuttles
Challenge: In logistics centers, goods are automatically transported from the warehouse to production with shuttles. To avoid collisions, end positions or preceding shuttles must be detected at an early stage.
Solution: Time-of-flight laser distance sensors detect objects in the field of vision of up to ten meters. Thanks to the use of a red laser, the sensors are particularly insensitive to external light.
Solution: Time-of-flight laser distance sensors detect objects in the field of vision of up to ten meters. Thanks to the use of a red laser, the sensors are particularly insensitive to external light.
Empty Box Check on Conveyor Lines
Challenge: In logistics centers, it must be ensured that there are no residual particles in the transport boxes before they are transported to the packaging station. Different colors and shapes of particles can make detection difficult.
Solution: A 2D/3D profile sensor with red laser checks every passing crate for residual particles, regardless of color or surface finish.
Solution: A 2D/3D profile sensor with red laser checks every passing crate for residual particles, regardless of color or surface finish.
Presence Check of Goods on Scissor Roller Conveyors
Challenge: Dark packaging, cartons, bags or pouches on scissor roller conveyors in logistics centers must be reliably detected to ensure a smooth flow of material.
Solution: A roller conveyor installed between the rollers reliably detects passing objects; the invisible infrared light does not disturb the operator of the system.
Solution: A roller conveyor installed between the rollers reliably detects passing objects; the invisible infrared light does not disturb the operator of the system.
Position and Presence Check of Connector Components
Challenge: Plug connectors for high-voltage on-board electrical systems must be checked for presence and correct position. Asymmetrical designs and varying colors of the components make it difficult to identify them.
Solution: Fiber optic sensors with a red light beam reliably detect the presence and position of components, regardless of their color and format.
Solution: Fiber optic sensors with a red light beam reliably detect the presence and position of components, regardless of their color and format.
Counting Copies of Printed Products
Challenge: In the printing industry, the print copies conveyed on conveyor belts must be counted accurately so that the subsequent packaging unit can process the exact quantity.
Solution: A triangulation laser distance sensor with red laser detects the bright and colored surfaces of the newspapers and reliably counts the copies that are superimposed.
Solution: A triangulation laser distance sensor with red laser detects the bright and colored surfaces of the newspapers and reliably counts the copies that are superimposed.
Coarse Wire Measurement in Steel Mills
Diameter Measurement of Metal Coils in Punching Systems
Challenge: In punching machines, the diameter of sheet coils must be measured continuously in order to detect the end of the material early and initiate a roll change in good time.
Solution: Laser distance sensors triangulation with red laser are used here, which enable highly accurate measurement results despite the metallic shiny sheet coils.
Solution: Laser distance sensors triangulation with red laser are used here, which enable highly accurate measurement results despite the metallic shiny sheet coils.
Overview of Solutions
| Products | Light sources | Benefits | Product links | |
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Triangulation laser distance sensors | Laser (red, blue) |
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Time-of-flight laser distance sensors | Laser (red, infrared) |
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Go to products |
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Fiber-optic sensors | Red light, blue light, pink light, infrared light |
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Go to products |
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Contrast sensors | White light, laser (red) |
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Go to products |
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Reflex sensors with background suppression | Red light, blue light, laser (red), infrared light |
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Go to products |
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Reflex light barrier | Red light |
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Go to products |
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Sensors for roller conveyor systems | Infrared, red light |
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Go to products |
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Luminescence Sensors | UV light |
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Go to products |
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Products
Triangulation laser distance sensors
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Light sources
Laser (red, blue)
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Benefits
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Product links
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Products
Time-of-flight laser distance sensors
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Light sources
Laser (red, infrared)
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Benefits
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Product links
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Products
Fiber-optic sensors
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Light sources
Red light, blue light, pink light, infrared light
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Benefits
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Product links
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Products
Contrast sensors
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Light sources
White light, laser (red)
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Benefits
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Product links
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Products
Reflex sensors with background suppression
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Light sources
Red light, blue light, laser (red), infrared light
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Benefits
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Product links
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Products
Reflex light barrier
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Light sources
Red light
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Benefits
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Product links
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Products
Sensors for roller conveyor systems
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Light sources
Infrared, red light
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Benefits
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Product links
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Products
Luminescence Sensors
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Light sources
UV light
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Benefits
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Product links
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Machine Vision
Products |
Light sources | Benefits | Product links | |
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2D/3D profile sensors | Laser (red, blue, UV/red) |
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2D/3D profile sensors
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Laser (red, blue, UV/red)
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Product Flyers for Download
P3 Series Product Flyer
(2 MB)
This document provides an overview of the P3 series laser distance sensors.
der wintec. Brochure
(1 MB)
This document contains the brochure on long-range laser distance sensors with wintec (wenglor interference-free technology).
PNG//smart Product Flyer
(1 MB)
This document contains the PNG//smart sensors product flyer. Photoelectronic Next Generation stands for a new age of smart photoelectronic sensors.
Sensors for Roller Conveyor Systems Product Flyer
(6 MB)
This document contains the product flyer for the sensors for roller conveyor systems.
Light Curtains Product Flyer
(680 KB)
This document contains the product flyer for the light curtains for measuring tasks.
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