China Flat-Field Concave Holographic Grating Manufacturer
An aberration-corrected concave grating specifically optimized for monochromator systems with fixed incident and exit angles. Based on the classic Seya-Namioka optical path configuration, it achieves excellent focusing performance through variable-pitch gratings.
Core Principle: Rowland Circle
The angle between the incident and exit beams is fixed (typically 2K≈60°-70°), allowing scanning of the entire wavelength simply by rotating the grating.
• Fixed Angle: Typical value 61.6°
• Wavelength Scanning: Only grating rotation required, no slit movement needed
• Aberration Correction Design: Optimized holographic recording parameters correct astigmatism and coma.
Key Advantages
• Simple Mechanical Structure: Fixed incident/exit slits, only grating rotation required
• Excellent Vacuum Compatibility: Particularly suitable for vacuum UV monochromators
• Wide Band Coverage: A single grating can cover 50nm-800nm
Typical Applications
Vacuum UV monochromator, UV-Vis spectrophotometer, synchrotron radiation beamline, plasma diagnostics
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| number |
Gradient density (l/mm) |
Wavelength range (nm) |
Blazing Wavelength (nm) |
Base radius (mm) |
Ra(mm) |
Rb(mm) |
2K |
Scaled area (H×W mm²) |
Efficiency curve |
|
JY6-001 |
1200 |
200-800 |
210 |
112 |
100 |
94 |
61.6° |
25×25 |
|
|
JY6-002 |
1200 |
250-800 |
250 |
112 |
100 |
94 |
61.6° |
25×25 |
|
|
JY6-003 |
1200 |
250-800 |
290 |
112 |
100 |
94 |
61.6° |
25×25 |
|
|
JY6-004 |
1200 |
200-800 |
200 |
224 |
200 |
188 |
61.6° |
25×25 |
|
| Other specifications will be added gradually. | |||||||||
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![Seya-Namioka Flat-Field Concave Holographic Grating 1200l/mm 210nm]()
Seya-Namioka Flat-Field Concave Holographic Grating 1200l...This is a Seya-Namioka flat-field concave holographic grating optimized for UV-VIS monochromator grating applications where size matters. As a concave grating manufacturer, we engineered this variant -
![Seya-Namioka Flat-Field Concave Holographic Grating 1200l/mm 200nm-800nm]()
Seya-Namioka Flat-Field Concave Holographic Grating 1200l...This is a Seya-Namioka flat-field concave holographic grating—a concave grating for monochromator applications where wavelength scanning is essential and simplicity matters.As a concave grating
As one of the leading seya-namioka flat-field concave holographic grating manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to wholesale customized seya-namioka flat-field concave holographic grating from our factory. Welcome to view our website for more information.
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