Concave Blazed Holographic Gratings for Polychromators

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Polychromators

Concave gratings differ from plane gratings in that they have the advantage of setting up a spectroscopic system without any imaging optics like concave mirrors. For this reason, the concave grating is used in a wide range of applications, such as analytical instruments, optical communications, biotechnology, and medical instruments.

Standard Product List

Click here for a detailed list of mounting parameters for all products (Concave Blazed Holographic Gratings for Polychromators)

Individual optical configurations can be viewed by clicking on each product in the table below.

Title
01_p0265-01
02_p0380-01
03_p0430-01
04_p0240-01
05_p0300-01
06_p0405-01
07_p0430-02
08_p0900-01
09_p0800-02
10_p0800-01
11_p0785-01
12_p0580-01
13_p0600-01
14_p0400-01
15_p0250-01
16_p0380-02
17_p0780-01
18_p1400-01
19_p0925-01
20_p1200-01 
Concave BHG Mounting for Flat-field Polychromator

Concave BHG Mounting for Flat-field Polychromator

Standard Specifications

Grating Type Unequally spaced curved-groove replica grating*1
Blank material Soda glass
Dimensional tolerances
Width(W) and height (H) of rectangular blanks
Diameter(Φ) of round blanks
Thickness(T)
±0.2mm
0/-0.2mm
±0.5mm
Effective area Total area less a 2mm strip around the perimeter
Groove density tolerance (at center of grating) ±2 grooves/mm
Coating (vacuum evaporation) Aluminum (Aℓ)
Scratches and digs 80-50 (in accordance with MIL-O-13830A)

*1: The grating grooves are formed with resin.
*Supports RoHS compliant (10 substances)
・Be sure to prevent condensation as this can cause a significant deterioration of optical characteristics.
・In the interests of product improvement, the external appearance and specifications are subject to change without notice.

Appearance

Shape of Concave Gratings

Shape of Concave Gratings

Special Specifications

  • When you need special concave gratings other than our standard, please contact us.
  • Holographic gratings (HG) are also available.

Examples of end-product applications

  • Biochemistry analyzer (hematology analyzer)
  • Liquid chromatographic analyzer
  • Component analyzer (fruit sugar meter, grain analysis, lipid measurement)
  • Color Measurement

 

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