Optical Products-> Test Charts

[1]   Click to Enlarge USAF Test chart Two patterns are available, 0-7 and -2-7, produced in accordance with the USAF Resolving Power Test Target. The most popular range is 0-7 group, with 6 elements per group, an element consisting of two target patterns of 3 lines at 90? to each other, the line space ratio being equal. These charts are produced as a chrome surface image on glass plate. See Enlarge Click to Enlarge Test Resolution Chart Test Resolution Charts are normally supplied as chrome high contrast pattern with positive image. Can be supplied in low contrast and negative form on request. Range from 3 lines to 20 lines per mm. See Enlarge Click to Enlarge Star Test Target Star Test Target is used qualitatively to demonstrate focusing affects and for rapid assessment of focal plane position. Its overall size allows it to be used not only as a camera or optical bench target, but also as a test slide for 35mm projectors. See Enlarge Click to Enlarge NUEBAUER COUNTING CHAMBER (A device used for cell counting) Nuebauer Counting Chambers are the finest quality, optically ground, and polished milled glass chambers. The chamber is diamond etched and has a double improved Neubauer Ruling, meeting the most demanding of standards. The standard blood counting chambers are, one-piece construction (measuring 75mmx32mmx4.5mm) ensuring long-term durability and absolute accuracy in measurement and count. The tolerances are (2% of the volume). Cell Depth : 0.100 mm (+/-2%) Volume : 0.1 Microliter Ruling Pattern : Improved Neubauer, 1/400 Square mm Rulings cover 9 square millimeters. Boundary lines of the Neubauer rulings are the center lines of the groups of three. The central square millimeter is ruled into 25 groups of 16 small squares, each group separated by triple lines, the middle one of which is the boundary. The ruled surface is 0.10 mm below the cover glass, so that the volume over each of 16 small squares is 0.00025 cubic mm. See Enlarge Click to Enlarge Bright ? Line Counting Chamber In addition to the standard ruling patterns, which are etched permanently onto the polished surface, we offer the popular ?Bright-Line? counting chamber. This bright-line counting chamber allows the ruling to appear brightly illuminated providing sharp contrast to the bright lines and cells, helping the user with accurate counts and less eyestrain. The triple lines show clearly which cells lie within the counting area and eliminate guesswork. We guarantee that all marks are permanent, and cannot be removed even after repeated washings. See Enlarge [1] Go to Top