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Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 8 nm/mm
  • Wavelength Range: 200 - 400 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 600 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 16 nm/mm
  • Wavelength Range: 400 - 800 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 300 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 24 nm/mm
  • Wavelength Range: 200 - 800 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 200 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 36 nm/mm
  • Wavelength Range: 300 - 1170 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 138 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 40 nm/mm
  • Wavelength Range: 200 - 1200 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 120 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 48 nm/mm
  • Wavelength Range: 200 - 1400 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 100 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 14 nm/mm
  • Wavelength Range: 190 - 455 nm
  • Spectrum Length: 18.8 mm
  • F/Number: 2.8 
  • Groove Density: 360 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 37.8 nm/mm
  • Wavelength Range: 285 - 1232 nm
  • Spectrum Length: 25 mm
  • F/Number: 2.8 
  • Groove Density: 133 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 76 nm/mm
  • Wavelength Range: 600 - 2500 nm
  • Spectrum Length: 25 mm
  • F/Number: 2.8 
  • Groove Density: 65 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 1.1 nm/mm
  • Wavelength Range: 440 - 520 nm
  • Spectrum Length: 70 mm
  • F/Number: 6.7 
  • Groove Density: 2000 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 1.4 nm/mm
  • Wavelength Range: 100 - 400 nm
  • Spectrum Length: 210.4 mm
  • F/Number: 7.9 
  • Groove Density: 1340 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 4.6 nm/mm
  • Wavelength Range: 395 - 705 nm
  • Spectrum Length: 68 mm
  • F/Number: 2.4 
  • Groove Density: 793 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 5 nm/mm
  • Wavelength Range: 200 - 360 nm
  • Spectrum Length: 32 mm
  • F/Number: 4.4 
  • Groove Density: 807 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 5 nm/mm
  • Wavelength Range: 4160 - 4180 nm
  • Spectrum Length: 4 mm
  • F/Number: 3.9 
  • Groove Density: 376 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 7.1 nm/mm
  • Wavelength Range: 200 - 350 nm
  • Spectrum Length: 21.2 mm
  • F/Number: 2.3 
  • Groove Density: 900 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 8.4 nm/mm
  • Wavelength Range: 340 - 750 nm
  • Spectrum Length: 49 mm
  • F/Number:
  • Groove Density: 800 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 9 nm/mm
  • Wavelength Range: 175 - 400 nm
  • Spectrum Length: 25.1 mm
  • F/Number:
  • Groove Density: 580 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 10 nm/mm
  • Wavelength Range: 370 - 760 nm
  • Spectrum Length: 37.1 mm
  • F/Number:
  • Groove Density: 950 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect ...
  • Dispersion: 4 nm/mm
  • Wavelength Range: 300 - 400 nm
  • Spectrum Length: 25 mm
  • F/Number: 3.2 
  • Groove Density: 1200 l/mm
Data Sheet
Type IV aberration corrected flat field and imaging gratings are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors. These gratings are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance ...
  • Dispersion: 67.4 nm/mm
  • Wavelength Range: 1600 - 2200 nm
  • Spectrum Length: 8.9 mm
  • F/Number:
  • Groove Density: 130 l/mm
Data Sheet

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.