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Terahertz optical path calibrator, converging and parallel optical path calibrating device

A technology of terahertz and calibrator, which is applied in the field of optical applications, can solve problems such as potential safety hazards, high laser intensity, and beam attenuation, and achieve the effects of improving optical path calibration accuracy, wide beam practicability, and reducing equipment costs

Active Publication Date: 2017-10-27
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are three obvious defects in using He-Ne laser for optical path calibration: 1. This method needs to use a special reflector or transmissive mirror with a central perforation, which will cause damage to the beam for a thinner or more concentrated beam in the central area. Obvious attenuation and distortion affect the beam effect; 2. The optical path calibration requires the use of laser light source, the laser intensity is high, it is easy to cause damage to the eyes, and there is a safety hazard, and the light source is a non-ordinary light source, which is large in size and high in cost (compared to Ordinary LED), difficult to operate; 3. The most important thing is to use laser to calibrate the optical path. On the one hand, it can only perform point or center calibration, and it cannot be accurately calibrated for parallel beams or large spot optical paths. On the other hand, the calibration optical path is often It needs to be built according to actual needs, and it needs to be rebuilt from one system to another, which will increase the complexity of system construction

Method used

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  • Terahertz optical path calibrator, converging and parallel optical path calibrating device
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  • Terahertz optical path calibrator, converging and parallel optical path calibrating device

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Embodiment 1

[0057] see figure 1 , the present invention provides a terahertz optical path calibrator 1, the terahertz optical path calibrator 1 includes: a terahertz optical path tube 11, the terahertz optical path tube 11 includes a terahertz light source placement port 111 and a light output port 112; a visible light path Tube 12, the visible light tube 12 is vertically placed with the terahertz tube 11, including a visible light source placement port 121 and a light output port 122, the visible light tube output port 122 is in phase with the terahertz tube light output port 112 Adjacent, and the end face of the light output port 122 of the visible light line tube is an inclined surface, and the inclined surface faces the light output port 112 of the terahertz light line tube; the axial centerline of the visible light line tube 12 and the terahertz light line tube The axial centerlines of 11 intersect, and the intersection point of the two is located at the light exit port 122 of the vi...

Embodiment 2

[0070] see figure 2 , the present invention also provides a converging optical path calibrating device, the converging optical path calibrating device includes the terahertz optical path calibrator 1 as described in Embodiment 1; the first reflective or transmissive optical element 4, the first reflective or transmissive The optical element 4 is located on the side of the light beam exporting port 1422 of the coupling light deriving optical path module 14, and is located on the optical path of the parallel light beam exported by the coupling light deriving optical path module 14, and is suitable for exporting the coupling light deriving optical path module 14 The parallel beams are converted into converging beams.

[0071] As an example, the structural parameters of the first reflective or transmissive optical element 4 may be the same as those of the coupling beam deriving optical path module 14 .

[0072] As an example, the first reflective or transmissive optical element ...

Embodiment 3

[0077] see image 3 , the present invention also provides a parallel optical path calibration device, the parallel optical path calibration device includes the converging optical path calibration device described in Embodiment 2; the second reflective or transmissive optical element 5, the second reflective or transmissive optical element 5 Located on the side of the first reflective or transmissive optical element 4, and on the optical path of the converging light beam converted by the first reflective or transmissive optical element 4, suitable for converting the converging light beam converted by the first reflective or transmissive optical element 4 The light beam is converted into a parallel beam.

[0078] As an example, the structural parameters of the second reflective or transmissive optical element 5 may be the same as those of the coupling beam deriving optical path module 14 and the first reflective or transmissive optical element 4 .

[0079] As an example, the se...

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Abstract

The invention provides a terahertz optical path calibrator, and calibration devices for convergence and parallel optical paths. The terahertz optical path calibrator comprises a terahertz optical path tube, a visible-light optical path tube, a terahertz color separation filter, and a coupling light guiding path module. According to the invention, identification of a terahertz beam can be completed only by employing a common divergent light source, so that the equipment cost is lowered substantially; the complicated degree of the terahertz optical path calibration degree is reduced effectively; the precision of terahertz optical path construction is improved obviously; and the equipment has the positive effect on practical development of the terahertz technology.

Description

technical field [0001] The invention belongs to the technical field of optical applications, and in particular relates to a terahertz optical path calibrator and a converging and parallel optical path calibrating device. Background technique [0002] Terahertz (THz) waves usually refer to electromagnetic waves with a frequency range of 100GHz to 10THz and corresponding wavelengths of 3mm to 30um. They are located between millimeter waves and far-infrared rays in the electromagnetic spectrum. the frequency band studied. In recent years, with the continuous development of photonics and nanotechnology, THz-related technologies have shown great application potential and value in the fields of public safety, communication transmission, biomedicine, product quality control, and atmospheric environment monitoring. Among the many THz research directions, THz imaging is regarded as one of the most important application technologies. The main reasons are: THz wave imaging can obtain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/02
CPCG01J3/0208
Inventor 周涛曹俊诚
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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