This light type is the basis of ordinary surface light, in which round holes or square holes are opened for forward lighting. 

OdinVision Lights  

OdinVision offers high-quality Light systems to better satify customers' ever-increasing requirements for Machine Vision performance. OdinVision provides a series of cost-effective high-quality Lights products to enable professional Machine Vision Lights solutions that are convenient and efficient. Moreover, OdinVision offers customized products with tailor-designed configurations and parameters to better suit customer's unique requirements.

High quality: each LED is strictly selected and tested

Strong product diversity: dozens of series and hundreds of models for customers to choose

Free services: free test, free Machine Vision Lights solution development, free demo light, free pre-sales and after-sales customization and services. 

OdinVision Lights - Overview 

Machine vision integrates various technologies, i.e., optics, machinery, electronics, computer software and hardware, to enable the extraction of different image features that are critical in different vision tasks. Therefore, image quality determines the success or failure of the entire Machine Vision system. To achieve high quality image, high-quality lighting is essential. Depending on the imaging configurations and targets, proper lighting components and solutions should be designed.

 1: Environmental requirements  

• Operating temperature: 0°C~+70°C

• Storage temperature: -10°C~+70°C

• Humidity: 20~85% (no icing)

 2: Lights color characteristics and available colors 

● Red R: 620~630nm

● Green G: 525~530nm

● Blue B: 465~470nm

● UV UL: 365~395nm

● Infrared IN: 760~1000nm

○ White W: 6600k color temperature

 3: Lights accessories  

Machine Vision Lights controller: analog controller, digital controller, strobe controller, diffusion board for constant current controller (optional).

Extension cord: 1m, 2m, 3m, 5m,10m optional

 4: Lights life and model description  

Service life: 50,000 hours (brightness reduced to 60% of the factory value)

Color options: red R, green G, blue B, white W, UV UL (can detect the tiny dust particles), infrared IN (for color filtering)

OdinVision Lights - Selected Terminologies 

   Positive Light  

The Lights are located above the measured object and shines on the surface of the measured object. According to the luminous angle, OdinVision Lights can be divided into high-angle Lights, low-angle Lights, as well as high and low angle shadowless Lights.

   High-angle Light  

Definition: If the angle between the light and the horizontal plane is bigger than 45°, it is called high-angle light.

Effect analysis: for the high-angle light, lights reflected from the even part of the target surface can enter into the lens, and as suh the resulting image has high grayscale values. But, lights reflected from uneven part of the surface cannot enter into the lens, and as such the resulting image has low grayscale values.

Main applications: positioning, character detection, contour detection, scratch detection, dimensional measurement.

Common Lights: high-angle ring light, strip light, surface light, coaxial light, point light, etc. 

   Low-angle Light  

Definition: If the angle between the light and the horizontal plane is smaller than 45°, it is called low-angle light.

Effect analysis:  For low-angle light, lights reflected from the even part of target surface cannot enter into the lens, and as such the resulting image has low grayscale values. But, lights reflected from uneven part of the surface can enter into the lens, and as such the resulting image has high grayscale values.

Main applications: positioning, character detection, contour detection, scratch detection, dimensional measurement.

Common Lights: low-angle ring light, strip light, line light, etc.

   Shadowless Light  

Definition: The light path of Shadowless Light is changed by the structure or diffuse plate, such that the final light has both high angle and low angle.

Effect Analysis: Both high-angle and low-angle light effects can be observed, and the objects under such light tend to have multi-angle irradiation, good surface texture, weakened wrinkles, and overall-uniformed appearance on images.

Main applications: Positioning, dimensional measurement, surface inspection of curved products.

Common Lights: dome light, ring shapeless light, square shapeless light, light box, etc.

 Coaxial Light  

Definition: The reflected light of Coaxial Light is parallel to the lens.

Effect analysis: After the light is reflected from the plane, it enters the lens parallel to the optical axis. As such, the object to be measured is equivalent to a mirror, resulting in strong reflectance detected by the sensor. So, when the "mirror" appears uneven, it will be particularly noticeable on the image.

Main applications: scratches, embossing, bump detection, contour detection.

Common Lights: coaxial light, parallel coaxial light, surface light, line light.

   Backlight 

Light source of Backlight is located below the subject, and when there are no blocks, the light enters the lens directly and the image grayscale value is high. But, when the subject blocks the light, the grayscale value on the image is low, and the contour information of the subject can be obtained.

 Diffuse Backlight  

Definition: This type of light emits diffuse light via the diffuse plate.

Effect analysis: When extracting contours of products with thickness and curvature, the edge on the image tends to be faint and not sharp enough, which is one limitation of this type of light. But, for flat products, the imaging effect is great, and this type of light provides a cost-effective solution.

Main applications: positioning, dimensional measurement, presence detection, defect detection.

Common Lights: surface light.

   Parallel Backlight  

Definition: This type of light source emits parallel light through the parallel structure.

Effect Analysis: Parallel light can better enable the outer contour of the irregular object to be measured, such that the edges of cylindrical products, or products with chamfered and rounded corners tend to be clear and sharp. This type of light is generally used with telecentric lens, and the precision tend to be very high.

Main applications: dimensional measurement.

Common Lights: parallel surface light, parallel coaxial light.

   Structured Light  

Definition: Through a special structure, the type of light source emits a clear line array or point array. 

Effect analysis: With this type of light,  object with defects tends to distort the spot array pattern, leading to patterns that can help better identify defects.

Main application: flatness inspection.

Common Lights:  structured light.

   Bright Field  

The background grayscale value is high and the feature grayscale value is low.

 Dark Field 

The background grayscale value is low and the feature grayscale value is high.

 Color selection techniques  

According to the color characteristics of the measured object itself, the corresponding wavelength is used to improve the contrast.

Two commonly used methods:

1. directly using monochromatic light source irradiation

2. Use white light with a monochromatic bandpass filter

   Infrared Light  

With the good penetration capability of infrared light, it can filter the interference of macromolecules on the surface of the measured object.

   Ultraviolet Light 

The fluorescence effect is used to detect UV glues and invisible codes. But, contrary to infrared light, here, the weak penetration capability of this type of light can be used to detect invisible features in transparent products.

   Polarized Light  

The polarized light sources are commonly used to eliminate some undesirable reflections.