Unlock instant, AI-driven research and patent intelligence for your innovation.

Light path capable of compressing light spots and improving resolution simultaneously

A technology for compressing light spots and resolution, applied in the field of spectroscopic instruments, can solve the problems of undetectable light spots and waste of light energy, etc., and achieve the effects of simple structure, improved resolution, and improved performance

Inactive Publication Date: 2013-08-21
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this method is that the light spot will be shrunk into a slender shape, such as attached Figure 8 As shown in .1, this will make the detector unable to detect all the light spots, resulting in a waste of light energy

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
  • Light path capable of compressing light spots and improving resolution simultaneously
  • Light path capable of compressing light spots and improving resolution simultaneously
  • Light path capable of compressing light spots and improving resolution simultaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Firstly, an optical path M1M2M3M4 with a symmetric structure is designed, where M1, M2, M3, and M4 correspond to mirrors 31, 32, 33, and 34, respectively, and the subsequent embodiments are expressed in the same way. The structure does not use a toroidal mirror, nor does it take advantage of the cos 3 The formula calculates the off-axis angle, the parameters are shown in Table 1, and the structural diagram is attached Figure 4 shown.

[0065] Next according to the method of the present invention design optical path M1 'M2M3M4, wherein band ' represents that this reflector adopts toroidal mirror, does not represent that this reflector adopts spherical mirror with ', follow-up embodiment expression mode is the same. The structural diagram is attached Figure 4 As shown, wherein the first reflector 31 is a toroidal mirror, the second reflector 32, the third reflector 33 and the fourth reflector 34 are spherical mirrors, and the design parameters are shown in Table 1. Fo...

Embodiment 2

[0070] Design the optical path M1'M2M3'M4, the structure diagram is attached Figure 4 As shown, wherein the first reflector 31 and the third reflector 33 adopt toroidal mirrors, the second reflector 32 and the fourth reflector 34 adopt spherical mirrors, and the design parameters are as shown in Table 1. This embodiment and subsequent embodiments The main design parameters are the same as the main design parameters of the optical path M1'M2M3M4 in the embodiment, only different from the number and position of the toroidal mirror, so they are listed in the same table item, and will not be described in detail hereafter. In this example, the toroidal mirror 31 ρ 31 The value is 235.26mm, the ρ of the toroidal mirror 33 33 The value is 593.22mm. The image quality shown in Figure 10 can be obtained by simulating the parameters with zemax. The comparison shows that the resolution (RMS radius in the Y direction) is equivalent to that of the optical path M1’M2M3M4, and the image s...

Embodiment 3

[0072] Design the optical path M1'M2M3M4', the structure diagram is attached Figure 4 As shown, wherein the first reflector 31 and the fourth reflector 34 adopt a toroidal mirror, the second reflector 32 and the third reflector 33 adopt a spherical mirror, and the design parameters are as shown in Table 1. In this example, the toroidal mirror 31 ρ of 31 The value is 235.26mm, the ρ of the toroidal mirror 34 34 The value is 588.95mm. The image quality shown in Figure 11 can be obtained by simulating the parameters with zemax. The comparison shows that the resolution (RMS radius in the Y direction) is equivalent to that of the optical path M1'M2M3'M4, and the image spot is compressed by 8% compared with M1'M2M3'M4.

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 relates to a light path capable of compressing light spots and improving resolution simultaneously, belonging to the field of spectrographs. The light path is characterized by comprising a sample light path and a chromatic dispersion light path, wherein the sample light path successively comprises a light source 1, a first plane mirror 21, a first reflector 31, a sample chamber 4, asecond reflector 32, a second plane mirror 22 and a slit 5, the chromatic dispersion light path successively comprises a third reflector 33, an optical grating 6, a fourth reflector 34 and a detector7, and in each reflector, a toroid mirror is adopted for compressing light spots. By adoption of a triple cosine formula, a relation among an off-axis angle of a principal ray to the third reflector used as a collimation objective lens, an off-axis angle of the principal ray to the fourth reflector used as an imaging objective lens, an incidence angle and a diffraction angle of the principal ray to an optical grating, and the curvature radiuses of the third reflector and the fourth reflector in a meridian direction is established by the chromatic dispersion light path so as to reduce aberration, and a select range of each parameter is proposed independently. According to the invention, the light spots are compressed and the resolution of the light path is increased simultaneously.

Description

technical field [0001] The invention relates to an optical path using a new type of reflection mirror—a toroidal mirror, which can be applied to the field of spectroscopic instruments. Background technique [0002] Light energy utilization and resolution are two important indicators for evaluating the performance of spectral analysis instruments, but there is a certain contradiction between the two. The optical module of the spectroscopic instrument is mainly divided into two important modules—the sample optical path module and the dispersion optical path module. Improving the imaging quality of these two modules is the key to improving the performance of the spectral analysis instrument. [0003] Japanese patent JP2003014631A is the closest prior art to this application, which discloses a solution for improving the optical path of spectrometer samples, as shown in the attached figure 1 As shown, the optical path of the sample is mainly composed of light sources 1, 2, half ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/02G02B17/06G02B5/10
Inventor 杨怀栋叶闯金国潘
Owner TSINGHUA UNIV