The irradiation solid angle is
a measure that expresses the angular range of light irradiated at a point
in terms of a cone whose vertex is at that point.
V-ISA Lighting
is the new lighting method
that can take the precice 3D-information
of the metal surface and glossy surface of an object.
The information can be obtained
by 1 shot of normal camera and lens
as a color gradation image,
without any scanning.
It is a Revolution
of the visual inspection
for the metal surface and glossy surface.
１．With V-ISA lighting, the light irradiation conditions for each point on the subject surface can be set uniformly within the field of view, regardless of the distance to the subject.
- Brightness, illuminance, irradiation optical axis, and irradiation solid angle (irradiation angle range) can be set equally.
- Feature points with strict detection conditions, such as defects on rough surfaces, can be stably detected.
２． With V-ISA lighting, the shape of the irradiation solid angle for each point on the subject surface can be uniformly set to any shape. (on bright-field/dark-field)
- The irradiation light to each point can be set to any irradiation shape.
- The irradiation light can be uniformly optimized depending on the detection conditions to accurately detect feature points.
-
-Exquisite optimization conditions for 1 point can be set evenly on surfaces and lines.
- Capable of stably extracting feature information with strict detection conditions on rough surfaces such as metal satin surfaces.
- Stable illumination with line cameras, etc. can be achieved without direction dependence.
３．With V-ISA lighting, it is possible to uniformly form a solid angle of illumination with a multilayer structure at each point under the same conditions.
-
(a) Each of RGB forms an irradiation solid angle in an arbitrary angular range.
(b) The image is formed evenly regardless of the height or inclination of the subject surface.
- The RGB irradiation angle range can be optimized depending on the information you want to extract.
- Converts the tilt information of the object plane to RGB information and allows direct imaging in one shot.
- It is possible to accurately capture 3D shapes as their differential images.
4．There are four series of V-ISA lighting, each with its own irradiation range.
θmin：Configurable minimum solid angle of illumination
θmax：Maximum configurable solid angle of illumination
Copyright © 2016 Machine Vision Lighting Inc.
