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Flat Field and Imaging Gratings
There are 38 different Flat Field and Imaging Gratings from suppliers and manufacturers listed in this category. In just a few clicks you can compare different Flat Field and Imaging Gratings with each other and get an accurate quote based on your needs and specifications. Please note that the prices of Flat Field and Imaging Gratings vary significantly for different products based on various factors including technical parameters, features, brand name, etc. Please contact suppliers directly to inquire about the details and accurate pricing information for any product model. Simply navigate to the product page of interest and use the orange button to directly reach out to the respective supplier with one click.
Did You know?
Flat field and imaging gratings are aberration-reduced concave gratings. The spectral images of the entrance slit are focused on a flat plane, so a flat detector array can detect the spectral intensity information simultaneously. This type of gratings is introduced by the holographic reading techniques. They have the important advantage of near stigmatic imaging, and hence are able to achieve maximum resolution and high photometric efficiency. Today, holographic reading is the most common solution for flat-field imaging. This is because classically ruled gratings are not capable of good imaging outside Rowland circle, and ruling of specially curved grooves by computer controlled engines or electron beams are much more expensive. Additionally improvement could be from delicate substrate design, and by having two different radii of curvature in the vertical and horizontal plane, astigmatism can be significantly reduced.
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