High-resolution high-value hole diameter imaging spectrometer for plant weak fluorescence passive detection

An imaging spectrometer and high numerical aperture technology, applied in the directions of using refraction elements to generate spectra, using diffraction elements to generate spectra, optical radiation measurement, etc., can solve the problems of weak fluorescence spectrum radiation intensity, high energy transmission and high signal-to-noise ratio, and achieve Excellent imaging quality, high numerical aperture, and easy assembly

Active Publication Date: 2018-11-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The radiation intensity of fluorescence spectrum is extremely weak, accounting for only 1%-3% of the total energy absorbed by vegetation leaves. Therefore, the requirements for energy transmission and signal-to-noise ratio of the instrument are high, and the numerical aperture of the system needs to reach more than 0.25;

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-resolution high-value hole diameter imaging spectrometer for plant weak fluorescence passive detection
  • High-resolution high-value hole diameter imaging spectrometer for plant weak fluorescence passive detection
  • High-resolution high-value hole diameter imaging spectrometer for plant weak fluorescence passive detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 As shown, the present invention is a high resolution and high numerical aperture imaging spectrometer for passive detection of weak fluorescence of vegetation. Including: slit 1, first lens 2, second lens 3, third lens 4, fourth lens 5, fifth lens 6, sixth lens 7, plane transmission grating 8, eighth lens 9, ninth lens 10 , the tenth lens 11 , the eleventh lens 12 , the twelfth lens 13 , the thirteenth lens 14 and the image plane 15 . Wherein the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6 and the sixth lens 7 form a collimating lens group; the eighth lens 9, the ninth lens 10, the tenth lens 11 , the eleventh lens 12 , the twelfth lens 13 and the thirteenth lens 14 form a focusing lens group. The aperture stop is located on the plane transmission grating 8; the collimating ...

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

No PUM Login to view more

Abstract

The invention discloses a high-resolution high-value hole diameter imaging spectrometer for plant weak fluorescence passive detection. The imaging spectrometer is sequentially provided with a slit, afirst lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a plane transmission grating, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens and an image surface, wherein the first to sixth lenses form a collimation lens group; the eighth to thirteenth lenses form a focusing lens group. The hole diameter grating is positioned onthe plane lens grating; the collimation lens group projects slit emergent light onto the plane transmission grating; the plane transmission grating performs chromatic dispersion on the collimation light; a continuous chromatic dispersion spectrum is formed through the focusing lens group and is imaged on the image surface. The optical system has high value hole diameter and high resolution; the forming elements are simple; the processing and the manufacturing are easy; the assembly is easy; the imaging quality is excellent; the whole view field whole wave band mean square root point range figure is realized; the radius value is smaller than 6.5 mum; the imaging aberration is lower than 0.5 percent.

Description

technical field [0001] The invention belongs to the technical field of hyperspectral imaging, and in particular relates to an imaging spectrometer with high resolution and high numerical aperture for passive detection of weak fluorescence of vegetation. Background technique [0002] High resolution and high numerical aperture imaging spectrometers play an important role in the research field of passive detection of vegetation sunlight-induced weak fluorescence. Although the weak fluorescence emitted by vegetation under sunlight is weak, it can accurately reflect the photosynthetic ability of plants, and it can also reflect the tolerance of plants to environmental stress and the degree of damage caused by stress to plant organs. This characteristic makes fluorescence completely As an early "probe" of plant health and damage to photosynthetic function, through the passive detection of this weak fluorescence, early forecasts can be made when crops are damaged by stress factors,...

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
no application Login to view more
IPC IPC(8): G01J3/18G01J3/16
CPCG01J3/16G01J3/18G01J2003/1861
Inventor 于磊陈素娟薛辉徐明明罗晓乐沈威武艺
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products