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English: Leica AT2 microscopy slide scanner, with annotations on main parts. Date: 22 February 2023: Source: Own work: Author: Mikael Häggström, M.D. Author info ...
Leica R4, R5, R6, R7 were 35 mm SLR cameras manufactured by Leica between 1980 and 1997 and belonged to the manual focusing R-System, which was offered from 1965 to 2009. Following the success of the Leica R3 the company, in continuing cooperation with Minolta , produced the R4–R7 series all based on the same chassis.
Early manufactures of Flying-spot scanners were Bosch Fernseh and Cintel. Cintel made Flying-spot scanners from the 1950s until the 2000s. [4] [5] [6] The flying-spot scanner tube had limit life span and quantity decease with use. Most flying-spot scanners use a green light that is shone through the exposed film image into a lens.
The brand Leica, better known for Leica Cameras, was formed on 2 April 1990 after the merger of several companies.In 2005, the company was acquired by Hexagon AB.Leica was listed on the Swiss stock exchange until the 7 August 2006 which saw the cancellation of all publicly held registered shares in Leica Geosystems Holdings Ltd and delisting of all listed registered shares of a par value of ...
Dust and scratches on the film can be a big problem for scanning. Because of their reduced size (compared to prints), the scanners are capable of resolutions much higher than a regular flatbed scanner; typically at least 2000 samples per inch (spi), up to 4000 spi or more. At these resolutions dust and scratches take on gigantic proportions.
Rays (black) coming from the object (red) at a certain angle and going through the cover-slip (orange, as is the slide at the bottom) can enter the objective (dark blue) only when immersion is used. Otherwise, the refraction at the cover-slip-air interface causes the ray to miss the objective and its information is lost.
A microscopy slide scanner. Whole slide image quality comparison, with a slide scanned with a 20x objective and about 0.8 gigabytes (GB) in size to the left, and a 40x objective and approximately 1.2 GB in size to the right. Each image shows a red blood cell. Digital slides are created from glass slides using specialized scanning machines.
A virtual slide is created when glass slides are digitally scanned in their entirety to provide a high resolution digital image using a digital scanning system for ...