Sökning: "Optical filters"

Visar resultat 1 - 5 av 47 uppsatser innehållade orden Optical filters.

  1. 1. A Novel Method for Measuring Low Energy Excitations with BLS

    L3-uppsats, Uppsala universitet/Materialfysik

    Författare :Christopher Borchert; [2024]
    Nyckelord :;

    Sammanfattning : This report presents the work done on an optical setup combining Raman and BLS spectroscopy and discusses the achieved improvements of the system. After some general optimization and minor redesigning, a new alternative beam path was implemented. LÄS MER

  3. 2. Evaluation of The Viral Reduction Potential using Ultrafiltration Membranes in the Drinking Water Treatment Process at Norrvatten

    Master-uppsats, KTH/Industriell bioteknologi

    Författare :Emma Eriksson; [2023]
    Nyckelord :Microbiological barrier; Ultrafiltration; NanoCeram filter; Drinking Water; Raw Water; Mikrobiologisk barriär; Ultrafiltering; NanoCeram filter; Dricksvatten; Råvatten;

    Sammanfattning : En pilotanläggning för ultrafiltering testas nu i Norrvattens reningsprocess för att undersöka ifall den kan användas som en tredje mikrobiologisk barriär i reningsprocessen. Målet med detta projekt är att testa membranets kapacitet att filtrera bort viruspartiklar men även membranet generella reduktionsförmåga för andra mikrobiologiska och kemiska kontamineringar. LÄS MER

  4. 3. Evaluation of the auroral large imagining system for automatic space debris detection

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Pulmu Pietikäinen; [2023]
    Nyckelord :Space debris; optical system; auroral imager;

    Sammanfattning : The performance of the auroral large imagining system (ALIS_4D) and an automatic track detection algorithm was evaluated for space debris surveillance and tracking. The evaluation of the ALIS_4D was done through a numerical simulation and data annotations, while the track detection results were manually evaluated. LÄS MER

  5. 4. Comparison of Autofocus Methods for Highly Reflective Surfaces : A Case Study on the Inspection of Optical Filters

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Axel Hedvall; [2023]
    Nyckelord :autofocus; reflective surface; optical filter; visual inspection; autofokus; reflekterande yta; optiskt filter; visuell inspektion;

    Sammanfattning : Visual inspection is a crucial final step when manufacturing products, as it determines if a product can be sold or rejected. The inspection is often performed manually by trained inspectors, which is time-consuming and often subjective. By automating the inspection, it can be performed faster and more accurately. LÄS MER

  7. 5. Properties of the Optical Hot Spots in the Circumstellar Ring of SN 1987A

    Master-uppsats, KTH/Fysik

    Författare :Christos Tegkelidis; [2023]
    Nyckelord :;

    Sammanfattning : The proximity of Supernova 1987A provides a great opportunity to study the aftermath of the impact of the ejecta with the dense clumps (observed as ”hot spots”) located in the equatorial circumstellar ring. This thesis examines the properties of the clumps by using Hubble Space Telescope optical imaging taken with the F625W and F675W broad filters between 1994 and 2022. LÄS MER