China Flat-Field Concave Holographic Grating Manufacturer
A special concave holographic grating, employing a variable-pitch grating design, enables clear imaging of diffraction spectra onto a planar detector (CCD/CMOS). It is a core component of modern miniature spectrometers.
Core Principle: Rowland Circle
By optimizing the variation of grating density along its surface, astigmatism and field curvature are actively corrected, converging diffracted light of different wavelengths onto the same focal plane.
Key Advantages
• Flat focal field: Perfectly compatible with planar array detectors
• Astigmatism correction: Optimized design for high-quality light spot
• No moving parts: Enables real-time full-spectrum acquisition in conjunction with array detectors
• Minimalist structure: Requires only a slit, grating, and detector
Typical Applications
Handheld Raman spectroscopy, fiber optic spectrometers, LIBS, OCT, environmental monitoring, industrial online detection
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|
| number | Scale density (I/mm) | Wavelength range (nm) | Spectral length (mm) | Engraved area (mm²) |
La(mm) |
α |
|
JY5-001 |
489.86 |
200-800 |
25.32 |
30×30 |
77.36 |
-6.65° |
|
Lh(mm) |
Lb1(mm) |
Lb2(mm) |
β1 |
β₂ |
βh |
衍射效率 |
|
64.27 |
66.98 |
78.00 |
12.35° |
30.52° |
-4° |
|
| number | Scale density (I/mm) | Wavelength range (nm) | Spectral length (mm) | Engraved area (mm²) |
La(mm) |
α |
|
JY5-002 |
454.31 |
285-720 |
25.39 |
Ø60 |
130.00 |
-11.3° |
|
Lh(mm) |
Lb1(mm) |
Lb2(mm) |
β₁ |
β₂ |
βh |
衍射效率 |
|
127.97 |
130.00 |
128.00 |
3.8° |
-7.6° |
-6.34° |
|
| number | Scale density (I/mm) | Wavelength range (nm) | Spectral length (mm) | Engraved area (mm²) |
La(mm) |
α |
|
JY5-003 |
217.15 |
400-950 |
20.15 |
Ø50 |
84.90 |
-2.5° |
|
Lh(mm) |
Lb1(mm) |
Lb2(mm) |
β1 |
β₂ |
βh |
衍射效率 |
|
64.00 |
85.67 |
111.55 |
7.5° |
14.48° |
-40.51° |
|
| Other specifications will be added gradually. | ||||||
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Flat-Field Concave Holographic Grating 489.86I/mm 200nm-8...Whether you are developing a concave grating for portable spectrometer applications for environmental monitoring, integrating spectrometer grating modules into OEM analytical instruments, or building -
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Flat-Field Concave Holographic Grating 217.15I/mm 400nm-9...Jilin Juyao Technology Co., Ltd. (JYTEC) presents the Flat-Field Concave Holographic Grating 217.15l/mm 400nm-950nm — a precision-engineered concave diffraction grating that uniquely combines
As one of the leading 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 flat-field concave holographic grating from our factory. Welcome to view our website for more information.
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