Graticules, Stage Micrometers, and Calibration Standards Stage Graticules (continued)
The Grid Dot Array Green Float glass, high reflective Chrome image
The ideal product for testing image area, distortion, field flatness and other parameters in optical and imaging systems. The three array areas give options for different magnifications or field size.
The R76, a unique product with three dot arrays to suit different magnification or image areas.
12 x 9 array of 1mm dots at 5mm pitch 16 x 12 array of 0.5mm dots at 2mm pitch 24 x 18 array of 0.2mm dots at 1mm pitch
Catalog # Description Size 68073-R76 Grid Dot Array, 3 image areas 101x101x2.2mm Image Analysis Standard (Reference Stage Graticule)
This high precision image analysis standard provides four test areas designed for calibrating image analysis systems and identifying deviations and distortions in optical imaging systems.
The standard, which can also be used as a high precision stage micrometer, is supplied with recommendations for its use and an individual certificate of calibration.
It is produced on a 75mm x 25mm slide and has a square grid accuracy of ±0.1µm and a dot accuracy of ±0.3µm (except for the smallest and largest two dots on the root-2 array, where accuracy is ±0.5µm).
The four test areas are:
400µm x 400µm square grid which is subdivided into 200, 100, 50 and 25 micron squares provides a means of detecting gross image distortions, and can be used as an accurate two
dimensional stage micrometer.
A 20 x 17 array of nominally 15µm diameter dots can be used to identify lens distortions. i.e. to set the field of view to eliminate edge distortion.
A log-normal distribution array of 100 spots ranging from 4.5µm to 27µm diameter enables the mean and standard deviation to be determined and compared with the certified values. This is an idealized distribution of maximum dynamic range for a full screen.
Catalog # 68049
42 Description Reference Stage Graticule 75mm x 25mm slide.
Electron Microscopy Sciences In PA: (215) 412-8400 • Toll-Free (800) 523-5874 Fax (215) 412-8450 or 8452 • email:
info@emsdiasum.com
Qty each or
stacie@ems-secure.com • www.emsdiasu
m.com
A root-2 array of spots from 3µm to 48µm diameter is used for determining the threshold levels of cameras and microscope systems.
Qty each
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