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A Variable Aperture Ring Beam Generator Based on an Elliptical Mirror

An ellipsoid reflector and annular beam technology, applied in optics, optical components, instruments, etc., can solve the problems such as the inability to adjust the irradiation angle and intensity, the insurmountable lens aberration, and the reduction of lighting quality, and to increase the scope of application and structure. Simple, high-quality lighting effects

Active Publication Date: 2018-11-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention patent with the application number of 201320141668.9 "Annular Beam Generating Device Based on Conical Elements" also discloses a ring beam lighting device, which has a high energy utilization rate, but the irradiation angle and intensity cannot be adjusted, which limits its applicability range; and the invention patent "ring beam generating device" with the application number of 201410116524.7 discloses a ring beam lighting device, which can obtain a uniform ring beam with a variable inner radius and no aberration, but the structure of the device is relatively complicated; at the same time, the above Both inventions use a lens structure, and the aberration of the lens cannot be overcome, thus reducing the quality of illumination

Method used

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  • A Variable Aperture Ring Beam Generator Based on an Elliptical Mirror
  • A Variable Aperture Ring Beam Generator Based on an Elliptical Mirror

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specific Embodiment 1

[0017] In this embodiment, a variable-aperture annular beam generator based on an ellipsoidal mirror, the structural diagram is as follows figure 1 Shown; The variable-aperture annular beam generating device of this embodiment comprises a cylindrical sleeve 1, a fixed disk 2, an objective lens 3, a pinhole 4, an annular diaphragm 5 and an ellipsoidal reflector 6 coaxially arranged; the objective lens 3 is composed of The fixed disk 2 installed in the cylindrical sleeve 1 is fixed; the pinhole 4 is located at the focus position of the objective lens 3 and the far focus position of the ellipsoid mirror 6; the annular diaphragm 5 can move axially; the The near focal point of the ellipsoid reflector 6 is on the outer end face of the ellipsoid reflector 6, and the outer end face of the ellipsoid reflector 6 coincides with the end face of the cylindrical sleeve 1; the light beam is irradiated parallel to the objective lens 3 and converges to the pinhole 4 , emerges from the far focu...

specific Embodiment 2

[0018] This embodiment is based on the variable-aperture ring-shaped beam generating device of the ellipsoidal reflector. On the basis of the specific embodiment 1, the specific structure of the ring stop 5 is further limited, as figure 2 shown. The annular diaphragm 5 includes an outer ring 51, an inner ring 52, and a plurality of iron wires 53 connecting the outer ring 51 and the inner ring 52, and the iron wires 53 are uniformly distributed in the circumferential direction; the outer ring 51 and the cylindrical sleeve 1 Clearance fit, a threaded hole is provided on the periphery of the outer ring 51, and a groove is provided on the cylindrical sleeve 1, and the bolt 54 passes through the groove provided on the cylindrical sleeve 1, and is screwed in the threaded hole of the outer ring 51 to realize ring light Fixation of the axial position of the diaphragm 5.

[0019] In this embodiment, the number of iron wires 53 is 4, which are evenly distributed in the circumferential...

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Abstract

The invention provides a variable aperture annular beam generating device based on an ellipsoidal reflector, belonging to the field of far field optical microscopy illumination. The device comprises a cylindrical sleeve, a fixed disk, a lens, a pinhole, an annular aperture and an ellipsoidal reflector arranged coaxially. A beam is irradiated to an object lens and is converged to the pinhole, the beam is emitted from the far focus of the ellipsoidal reflector and is reflected by the ellipsoidal reflector to be converted to the near focus of the ellipsoidal reflector, and an illumination beam is formed. The annular aperture moves along an axial direction, and the intensity and angle of illumination beam are adjusted. According to the variable aperture annular beam generating device based on an ellipsoidal reflector, on the basis of providing annular beam illumination, the synchronous adjustment of illumination angle and intensity is realized with a very simple structure, the unique design of using the ellipsoidal reflector and abandoning a lens is employed, an aberration problem is solved from the principle, and the quality of lighting is improved greatly.

Description

technical field [0001] The invention relates to a variable-aperture annular beam generating device based on an ellipsoid reflector, which belongs to the field of far-field optical microscopic illumination. Background technique [0002] With the development of microscopic technology, optical microscopic technology has made a series of progress. Among them, the far-field optical microscope has become an important branch of the field of microscopy due to its unique technical advantages of real-time non-scanning and fast imaging. Real-time non-scanning fast imaging requires the cooperation of lighting technology. It can be seen that the development of lighting technology directly determines the development of far-field optical microscopes. [0003] Ring beam illumination, as a special optical illumination method, can improve the lateral resolution of far-field optical microscope, so it has been developed rapidly in the field of far-field optical microscope. The invention paten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09
CPCG02B27/0927G02B27/0983
Inventor 李强刘俭李梦周谭久彬牛斌
Owner HARBIN INST OF TECH