Bausch & Lomb Incorporated Certified Precision Diffraction Grating.

Large Heavy aluminum mounting (sold and shipped separately) available but not included with Grating. 

Marked specs:

  • Catalog No. 35-53-28-980
  • 40 grooves/mm
  • Blaze angle: 26°45'
  • Concave radius: ∞
  • Blaze direction arrow marked on glass
  • Serial number present, shown in photos

Glass optic measures approximately 219 mm x 165 mm x 35 mm and weighs approximately 7.1 lb by itself.

This was removed from surplus laboratory/test equipment. It appears to be a large flat reflective diffraction grating / spectroscopy optical component. Exact application, coating type, wavelength range, calibration status, and performance are unknown.

Condition:

Used surplus condition. The grating/optical surface has visible dust, haze, smudges, and handling marks as shown in the photos. I have not wiped or solvent-cleaned the ruled/grating face to avoid damaging the delicate optical surface. Buyer should expect inspection and any cleaning to be done by someone familiar with optical gratings.

 
Please email with any questions.

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