CN206638897U - A kind of even smooth beam expander optical system of Kohler illumination - Google Patents
A kind of even smooth beam expander optical system of Kohler illumination Download PDFInfo
- Publication number
- CN206638897U CN206638897U CN201720424651.2U CN201720424651U CN206638897U CN 206638897 U CN206638897 U CN 206638897U CN 201720424651 U CN201720424651 U CN 201720424651U CN 206638897 U CN206638897 U CN 206638897U
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- optical system
- liquid crystal
- even smooth
- crystal display
- illumination
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Abstract
The utility model discloses a kind of even smooth beam expander optical system of Kohler illumination, including light source, spectrum correction piece, the first optically focused microscope group, even smooth beam expanding lens, second condenser lens group and the liquid crystal display set gradually along systematic optical axis, the angular aperture of the first optically focused microscope group is more than the field angle of object of optical coupled imaging system, and the angular aperture of second condenser lens group is more than the half angle of liquid crystal display available field of view.The utility model realize light-source brightness it is uneven or present filamentray structure when, make face to be illuminated Energy distribution uniformly and by the picture of light source on the entrance pupil face of optical imaging system, and it is set to be full of whole entrance pupil face, so that liquid crystal display obtains the steady illumination of high uniformity, to realize the simulation of different illumination.
Description
Technical field
It the utility model is related to a kind of optical imaging system.More particularly, to a kind of even smooth beam-expanding system of Kohler illumination.
Background technology
The shortcomings that critical illumination be when light-source brightness is uneven or present obvious filamentray structure when, it will be reflected in by
On showing up, make by uneven according to Energy distribution；The shortcomings that known Kohler illumination overcomes critical illumination, it is research microscope
In preferable illumination.Not only observing effect is good for this illumination, and is successfully to carry out one kind necessary to microphotograph
Illumination.Filament does not fall on tested object plane, maintaining uniform illumination；The hot focus of illumination is not in checking matter, and will not burn checking matter；
Field stop is imaged at tested object plane by condenser, is changed size and be can control illumination zone.But in some specific implementations
Instrument in when use Kohler illumination system entrance pupil do not reach corresponding index request, accordingly, it is desirable to provide one kind overcomes
The Optical devices of existing Kohler illumination light-uniforming technology deficiency.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of even smooth beam-expanding system of Kohler illumination, the illumination of the system
It is 7mm that uniformity, which is more than 90%, object lens entrance pupil size,.
In order to solve the above technical problems, the utility model uses following technical proposals：
A kind of even smooth beam expander optical system of Kohler illumination, including set gradually along systematic optical axis light source, spectrum correction piece,
First optically focused microscope group, even smooth beam expanding lens, second condenser lens group and liquid crystal display, the angular aperture of the first optically focused microscope group are more than optics
The field angle of object of coupling imaging system, the angular aperture of second condenser lens group are more than the half angle of liquid crystal display available field of view.
Preferably, the optical system also include being arranged between light source and the spectrum correction piece be used for carry out light intensity tune
The energy regulator of section.
Preferably, the optical system also includes the refrigerator part to be radiated to the light source.
Preferably, the transmitted spectrum scope of the even smooth beam expanding lens is 400~1600nm.
The beneficial effects of the utility model are as follows：
The utility model is expanded by inserting smoothing mirror between the first optically focused microscope group and second condenser lens group to reach even light
The effect of beam, the angular aperture of the first optically focused microscope group are more than the field angle of object of optical coupled imaging system, by the picture of light source into
On the entrance pupil face of optical coupled imaging system, and whole entrance pupil face is full of, makes the steady illumination that high uniformity is obtained at liquid crystal display.
The utility model realize light-source brightness it is uneven or present filamentray structure when, make face to be illuminated Energy distribution uniformly and will
The picture of light source makes it be full of whole entrance pupil face on the entrance pupil face of optical imaging system, so that liquid crystal display obtains Gao Jun
The steady illumination of even property, to realize the simulation of different illumination.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows structural representation of the present utility model.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
As shown in figure 1, a kind of even smooth beam expander optical system of Kohler illumination, including refrigerator 1, light source 2, energy regulator 3,
Spectrum correction piece 4, the first optically focused microscope group 5, even smooth beam expanding lens 6, second condenser lens group 7 and liquid crystal display 8.Light source 2, energy regulator
3rd, spectrum correction piece 4, the first optically focused microscope group 5, even smooth beam expanding lens 6 and second condenser lens group 7 are set gradually along systematic optical axis, liquid crystal
Screen 8 is at the emergent pupil of the optical system.Light source 2 is 12V20W halogen tungsten lamps in the present embodiment, and refrigerator 1 is made to light source 2
Cold radiating, the transmitted spectrum scope of even smooth beam expanding lens 6 is 400~1600nm.
During optical system works of the present utility model, the light that light source 2 is sent exports energy by the control of energy regulator 3,
To provide the low-light scene illumination for simulating different illumination requirements；By spectrum correction piece 4, output spectrum is corrected；It is poly- through first again
The light that light microscopic group 5 sends filament is collimated into directional light, is expanded by even smooth beam expanding lens 6, second condenser lens group 7 focuses on, and makes lamp
The half field-of-view of silk picture is more than image rotation object lens entrance pupil radius, meanwhile, the aperture diaphragm of second condenser lens group 7 is arranged at the picture of liquid crystal display 8
On face, and its angular aperture is more than the half angle of the available field of view of liquid crystal display 8, and high uniformity is finally formed on liquid crystal display imaging surface
Illumination light.The angular aperture of the first optically focused microscope group 5 is 20 ° in the present embodiment, slightly larger than the true field of optical coupled imaging system
18.5 ° of angle, by the picture of light source 2 on the entrance pupil face of optical coupled imaging system, and whole entrance pupil face is full of, made at liquid crystal display
The steady illumination of high uniformity is obtained, to realize the simulation of different illumination.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in of the present utility model
The row of protection domain.
Claims (4)
1. a kind of even smooth beam expander optical system of Kohler illumination, it is characterised in that including light source, the light set gradually along systematic optical axis
Compose correcting sheet, the first optically focused microscope group, even smooth beam expanding lens, second condenser lens group and liquid crystal display, the aperture of the first optically focused microscope group
Angle is more than the field angle of object of optical coupled imaging system, and the angular aperture of second condenser lens group is more than the half of liquid crystal display available field of view
Subtended angle.
2. optical system according to claim 1, it is characterised in that the optical system also include be arranged on the light source with
The energy regulator for being used to carry out light intensity regulating between spectrum correction piece.
3. optical system according to claim 1, it is characterised in that the optical system also includes dissipating the light source
The refrigerator part of heat.
4. optical system according to claim 1, it is characterised in that the transmitted spectrum scope of the even smooth beam expanding lens is
400~1600nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424651.2U CN206638897U (en) | 2017-04-21 | 2017-04-21 | A kind of even smooth beam expander optical system of Kohler illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424651.2U CN206638897U (en) | 2017-04-21 | 2017-04-21 | A kind of even smooth beam expander optical system of Kohler illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206638897U true CN206638897U (en) | 2017-11-14 |
Family
ID=60246485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720424651.2U Expired - Fee Related CN206638897U (en) | 2017-04-21 | 2017-04-21 | A kind of even smooth beam expander optical system of Kohler illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206638897U (en) |
-
2017
- 2017-04-21 CN CN201720424651.2U patent/CN206638897U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20180421 |