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OVERVIEW

Diffraction gratings of special specifications can be manufactured on request.

Material

Pyrex glass is used as a standard material. Hitachi is also prepared to use materials other than Pyrex glass when specified.

Coating

Diffraction gratings are coated with aluminum (Al) as a standard. Hitachi will coat the gratings with gold (Au) and platinum (Pt) as special specifications.

Diffraction gratings with Part No. 001-0450 and 001-0437 exceptionally are coated with gold (Au) as a standard.

Overcoating

Diffraction gratings are overcoated with magnesium fluoride

(MgF2) or lithium fluoride (LiF) as special specifications.

Dimensions

Diffraction gratings are manufactured to dimensions other than specified in this catalog. They can also be shaped round.

Certificate

For certifying the groove profile, an electron micrograph can be provided together with the manufactured diffraction grating at the expense of the customer.

CUSTOMIZED GRATINGS QUOTATION FORM

 

DETAILS Name  Company Name  Address Email  Telephone  Type of Grating   Plane Concave ( radius:  mm)     Line-Space Constant (conventional grating) Varied (aberration-corrected grating) Groove Frequency: grooves/mm Blaze Wavelength: mm Blaze Angle: degrees     Blank Size Rectangular Ruled width direction (W): mm 0.1mm Grooved length direction (L): mm 0.1mm Thickness: mm 0.2mm Round Diameter: mm 0.1mm Thickness: mm 0.1mm     Blank Material Pyrex    Zero-Dur    Fused Silica    Other   (please specify)           Ruled Area Size (W):   mm          (L):   mm Efficient Grating Area (W):   mm          (L):   mm (Around 2 to 4mm smaller than the ruled area)   Coating A1    Pt    Au    Other   (please specify)   Ambient Temperature lower than 400C    lower than 2000C   Optical System Specification (if necessary)             Wavelength Range:   nm  ——  nm             Reciprocal Linear Dispersion:   nm/mm                                           Resolution:   nm/mm                          System Focal Length:   nm/mm                                            F Number:      Mounting Monochromator    Spectrograph      Other   (please specify)