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
|
|
| 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-800nm]()
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 -
![Flat-Field Concave Holographic Grating 217.15I/mm 400nm-950nm]()
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
Flat-Field Concave Holographic Grating combines concave optical geometry with holographically generated grooves and aberration correction to focus dispersed wavelengths onto a flat spectral plane. This design is optimized for compact spectrometers utilizing linear or planar detector arrays (CCD/CMOS), effectively eliminating the field curvature limitations of conventional concave gratings.
Key Optical Characteristics
Concave Substrate Geometry
Integrates optical dispersion and focusing into a single element.
Holographic Groove Structure
Reduces stray light and provides application-specific profile control.
Aberration-Corrected Design
Convallis posuere morbi urna molestie elementum pulvinar odio etiam.
High-Efficiency Coatings
Tailored reflective coatings optimized for specific spectral bands (UV, Vis, NIR).
To ensure optimal optical performance and detector matching, consider the following parameters during your design phase:
Operating Wavelength Range: Defines the primary spectral band and coating selection.
Groove Density: Determines angular dispersion and wavelength separation.
Diffraction Order: Affects efficiency, free spectral range, and order overlap.
Focal Length & Optical Geometry: Establishes beam acceptance and detector coupling.
Detector Format: Matches active area, pixel size, and layout to the flat-field focal plane.
Typical Applications
Compact OEM Spectrometers
Integrated dispersive solutions for portable and modular instruments.
CCD/CMOS Array Detection Systems
Simultaneous multi-wavelength acquisition across a flat focal plane.
UV-Vis and Raman Spectroscopy
High-resolution and low-scatter configurations tailored to specific analytical requirements.
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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