Optical system of hyperspectral imager for sunlight-induced chlorophyll fluorescence detection
A technology of chlorophyll fluorescence and optical system, which is applied in the field of optical system of sunlight-induced chlorophyll fluorescence detection hyperspectral imager, and can solve the problems of no mature products and remote sensing instruments
Active Publication Date: 2021-07-13
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the research and development of instruments in this field in my country is in the development stage, and there are no mature products and remote sensing instruments to be applied.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] The invention belongs to the technical field of hyperspectral imaging and the field of space optics, and is a hyperspectral imaging optical system specially used for passive remote sensing of chlorophyll fluorescence induced by sunlight in vegetation. The invention according to figure 1 The structure shown is implemented, and the components in the structure include: window 1, first lens 2, second lens 3, third lens 4, aperture stop 5, fourth lens 6, fifth lens 7, sixth lens 8. Seventh lens 9, eighth lens 10, slit 11, ninth lens 12, tenth lens 13, eleventh lens 14, twelfth lens 15, thirteenth lens 16, fourteenth lens 17, Holographic phase transmission grating 18 , fifteenth lens 19 , sixteenth lens 20 , seventeenth lens 21 , eighteenth lens 22 , nineteenth lens 23 , twentieth lens 24 and image plane 25 . The window 1, the first lens 2, ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an optical system of a sunlight-induced chlorophyll fluorescence detection hyperspectral imager, which comprises a telescope, a slit, a collimating mirror, a holographic phase transmission grating, a focusing mirror and an image plane. The system is an image telecentric system with a field of view of 20°, which can meet the needs of general space optical remote sensing; the working band is 670nm~780nm, covering the main detection window of vegetation sunlight-induced chlorophyll fluorescence; the F number of the system can be set as Between 1.8 and 3 to ensure the high luminous flux transmission capability of the system and the high signal-to-noise ratio of the detection; the pixel spectral sampling is 0.05-0.1nm / pixel, which can achieve a spectral resolution above 0.3nm; at the same time, it has superior imaging quality , can obtain richer vegetation sunlight-induced chlorophyll fluorescence information.
Description
technical field [0001] The invention belongs to the technical field of hyperspectral imaging and the field of space optics, and in particular relates to an optical system of a hyperspectral imager for sunlight-induced chlorophyll fluorescence detection. Background technique [0002] Sunlight-induced chlorophyll fluorescence is a direct characterization of plant photosynthetic productivity. It is called a "probe" for plant health and photosynthesis. Remote sensing fluorescence signals can directly indicate the photosynthetic productivity of plants under stress-free conditions and the degree to which plants are exposed to external environmental stress. It has very important scientific and practical value in the application of vegetation ecology. Sunlight-induced chlorophyll fluorescence is usually submerged in the reflection signal of the vegetation canopy, and its energy only accounts for about 1%. In order to accurately separate this fluorescence spectral information from th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28G01J3/18
CPCG01J3/1838G01J3/2823G01J2003/1861
Inventor 于磊陈素娟薛辉徐明明罗晓乐沈威武艺顾家鹏
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI