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E-mail
wulinghuimin@126.com
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Phone
13482574326
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Address
Shanghai Gonghe New Road Baoshan Wanda
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Shanghai Wuling Optoelectronics Technology Co., Ltd
grating spectrometer
NegotiableUpdate on 12/13
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Overview
The grating spectrometer adopts a combination of penetrating grating spectroscopy technology and CCD image acquisition technology, making it possible to quickly obtain image spectra This system adopts a high dynamic range and high sensitivity camera and a wideband spectrometer, with good seismic performance and complete functions. It can be applied in high-altitude remote sensing, field spectral imaging target recognition, indoor hyperspectral imaging detection, and microscopic spectral imaging; (All products can be customized according to customer requirements.)
Product Details
grating spectrometerworking principle
The radiation energy of the target object is collected through the lens and collimated through a slit to illuminate the spectral element. It is then dispersed in the vertical direction by the spectral element and imaged on the image sensor. The horizontal direction parallel to the slit is called the spatial dimension, and each row of horizontal photosensitive elements represents an image of a spectral band; The vertical direction is the dispersion direction, known as the spectral dimension, and on each column of photosensitive elements is a spatially sampled field of view (pixel) image of spectral dispersion. In this way, each frame of image data from the array detector is a horizontal spectral data, and the motion of the displacement platform continuously records the spectral image at a certain rate, resulting in a two-dimensional spectral image.
schematic diagram
grating spectrometerfunction
1. Combine all the switches of the electronic control devices in the software, and the operation buttons in the manual software can realize the entire push scan process. Moreover, the software combines indoor and outdoor scanning processes. Because the entire system's movement requires motion devices to be used in conjunction, combining these control buttons in the software makes it easy to operate.
2. Raw files can be obtained for teachers to analyze data using Envi software, and the software already has many analysis functions, making it easy to achieve brightness and darkness correction and obtain spectral curves. The obtained spectral curves are convenient for teachers to analyze and study the spectral distribution characteristics of objects. A three-dimensional spatial map facilitates teachers to intuitively analyze and study the spatial spectral distribution characteristics of objects.
3 can obtain images of the required frequency band. These images are convenient for teachers to analyze the characteristics of objects in different frequency bands.
Push broom visible near-infrared hyperspectral imaging system
main components
1 Hyperspectral imaging instrument
Model: HSI-VNIR-400-1000nm
parameter
| Spectrometer section | Wavelength range 400nm-1000nm 1 The spectrometer adopts a transmission grating for spectral analysis 2 spectral range: 400~1000 nm 3 色散: 97.5nm/mm 4 spectral resolution( 30 umslit): 2.8 nm 5 Image size:6.15mm x14.2mm 6 spatial resolution:spot diameter< 9 um 7 aberration:No astigmatism aberration,halo< 1.5 um,trapezoid< 1 um 8 aperture: F/2.4. 9 Optical input:parallel light 10 efficiency>50%,Polarization independent 11 Lens interface:standardCinterface
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| Research camera | Detector resolution: 1632*1232active Camera speed: 40fps (full resolution) Camera speed adjustable range: 15-60fps Camera interface: GIGE interface Dynamic range: 69dB Binning: Post processing Sampling depth: 12 bits |
Model: HSI-NIR-900-1700nm
parameter
| Spectrometer section | Wavelength range 900nm-1700nm 1. Spectral range: 900~1700 nm 2. Spectral sampling interval: 4 nm 3. Spectral resolution (30 μ m slit): 5 nm 4. Image size: 7.6mm(spectral)x 14.2mm (spatial) 5. Aperture: F/2.0 6. Lens interface: Standard C interface The precision fixed base plate of the spectrometer |
| Research infrared camera | Detector resolution: 640*512, Camera interface: Cameralink interface Chip type: InGaAs Frame speed：120fps Sampling depth: 14 bits |
For indoor use, it is necessary to configure a dark box, displacement table, light source, and supporting analysis software
(1) Dark box and displacement platform (all products can be customized according to customer requirements)
The dark box and displacement platform are designed together, and the working principle of the entire system determines that there must be relative motion between the object and the hyperspectral camera. Therefore, our design is to move the measured object by placing it on the displacement platform
1. Electric mobile platform 2 Travel distance: 40cm 3. Tabletop: 35cm x 35cm (table size can be customized) 4 Mobile precision: 10 μ m
5. The parameters of the displacement table are above the built-in positive and negative limit switches. The displacement table is designed together with the concealed box to make the entire system more secure. The entire system includes a displacement table, a base plate, a support frame, a light source fixing seat, and a shading cover
The design diagram is as follows:
(2) We have integrated a light source that reflects and transmits light
Spectral band of light source: Spectral range: 400~2500 nm, 21V/200W stable output halogen lamp light source
Double branch linear light guide tube: linear luminous length 6 inches
Transmitting light source and bracket
Using a larger transmission bracket and light source facilitates the collection of larger objects in the future. Please refer to the following picture for the 6-inch transmission light and transmission bracket!
The functions of the analysis software are as follows:
1). Support USB or setting acquisition
Parameters support the setting of interface and other parameters
2). Display interface: capable of displaying spectral curves and spectral images
3). Recording control of spectral images to hard disk. Data format is compatible to ENVI processing software. Easy to cooperate with ENVI software
4). White and dark corrections. Black and white correction
5). Stepping motor control for mechanical and rotating platforms
6). Spectral Image Analyzer for Spectral Image Analysis
7). Spectral reflectance calculation
8). Spectral angle mapping (SAM)
9). Cut ROI (Range of interest) file cutting function
10). Color/Mono image display
11). Single Spectral Image&3D Image Display: Single wavelength image and 3D stereoscopic image display
12). STDEV function standard deviation calculation and analysis function
13). All single spectral image save to PNG single spectral image storage
14). Spectral binning function: Spectral resolution adjustment function
15). Spectral smoothing function - Spectral smoothing correction function
16). Spectral Image Analyzer analysis function
5 supporting chemometric analysis software
1) Multivariate analysis and experimental design software
2) Equipped with detection data statistics function
3) Equipped with data regression analysis function
4) Equipped with data preprocessing function
5) Capable of data classification
