CONCAVE GRATINGS FOR FLAT-FIELD 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
Standard Specifications
Special Specifications
Solutions
- A stable supply of high-quality diffraction gratings is wanted.
・Improvement in measurement accuracy for biochemical tests
・Concave grating suitable for near-infrared spectroscopy (NIRS) development for food analysis
Standard Product List
Individual optical configurations can be viewed by clicking on each product in the table below.
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
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