The course provides knowledge about optical systems and imaging processes. The course introduces the paraxial formalism for thin and thick lenses as well as for systems of lens edger . A major part of the course deals with imaging errors, called chromatic and monochromatic aberrations. General expressions of basic types of aberrations are derived and these are used to describe the occurrence and occurrence of aberrations in different systems. Next, strategies and methods are discussed for how optical systems use to be designed so that their images are free from aberrations or optimized for a minimum of aberrations. The course also deals with the impact of diffraction phenomena on image quality. The course contains laboratory moments but also design and analysis of optical systems using the “ray tracing” program.
Image processing, computer vision and smart cameras.Or why not computer vision?
The same technology area is described in different words and in different ways at different times. No matter what you choose to call it, we have high skills, a well-equipped optics lab and a wide network in the area.
This is a technology area that gives rise to many different types of solutions. In the industry, optical measurement technology has been used for many years to efficiently control and control quality. New products have already and are coming to an even greater extent in the future to revolutionize our use of optical measurement.
For example, mobile platforms, such as mobile phones and tablets, today have good cameras and enough processor power to make advanced calculations. A 3D camera built into the mobile is not far away.
Below we have divided the area within which we work in a number of sub-areas that we present more closely.
Optics is a part of physics that examines the essence of light and the patterns of light phenomena that arise when light diffuses and interacts with light and matter.
Light is an electromagnetic wave of certain wavelengths – frequencies of 390-760 nm. At these wavelengths there is a sensitive eye. It spreads in the optical environment. It travels at a velocity of 3 × 10 8 m / s in the vacuum, and in the fabric environment, the speed of light is smaller. The source is propagated in spherical waves. Long spans can be considered as planar.
The light beam is a line perpendicular to the wave-surface, indicating the direction of propagation in a homogeneous optical environment. In a homogeneous optical environment, light spreads straight.
Light source – natural : sun, fire, stars
– artificial : bulb, fluorescent, lamp, laser
- Chromatic : composed of light more wavelengths, eg white light (consisting of seven colors)
- Monochrome : 1 wavelength – laser
Optical display is the display of objects by creating images based on the laws of optics. Using the optical system, we acquire images by assigning images to each subject through a display system that is controlled either by the law of reflection or the law of refraction.
An optical imaging system is a set of optical environments bounded by optical faces that perform optical imaging. It is a set of interfaces that change the reflection or refraction of the ray of the object.
The object is the object to be displayed, from which individual bundles of individual rays that enter the imaging system. The rays partly reflect and partly penetrate from the object.