Search for dissertations about: "optical filters"
Showing result 6 - 10 of 54 swedish dissertations containing the words optical filters.
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6. Morphological and Physiological Adaptations in Cichlid Crystalline Lenses
Abstract : Vertebrate eyes share a common ancestry as well as the basic design with a pupil, a retina and a lens. The lens is essential for perceiving the details in the world around us and ensures that a sharp image of the surroundings is focused onto the photoreceptors in the retina. READ MORE
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7. Photosensitivity, chemical composition gratings and optical fiber based components
Abstract : The different topics of this thesis include high-temperaturestable fiber Bragg gratings, photosensitivity and fiber basedcomponents. Fiber Bragg gratings (FBG) are wavelength dispersiverefractive index structures manufactured through UV exposure ofoptical fibers. READ MORE
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8. Optical detection of joint position in zero gap laser beam welding
Abstract : This thesis presents an experimental study on how to track zero gaps between metal sheets to be joined by laser beam butt welding. Automated laser beam welding is gaining interest due to its ability to produce narrow and deep welds giving limited heat input and therefore less distortions compared to other processes, such as arc-welding. READ MORE
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9. Nonlinear Optical Materials Structural Studies of Alkali Titanium Phosphates
Abstract : Crystals are beautiful, not only as pieces of jewellery, but also for their intrinsic properties, which are of significant scientific and technological importance. Ferroelectric materials are extremely versatile, since they may be combined with piezoelectric or electrooptic devices for use as filters, oscillators, memories, light detectors, and displays. READ MORE
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10. Investigations of Diesel Sprays in Optical Engines - Liquid Fuel Penetration and Lift-Off Length
Abstract : Diesel engines are widely used as powertrain solutions for transportation vehicles. Their low fuel consumption and high performance make them attractive, however, their associated pollutant emissions is a major drawback which represent a hazard for public health and the environment. READ MORE