CN208171201U - The optical curvature radius instrument of radius can be surveyed on a large scale - Google Patents
The optical curvature radius instrument of radius can be surveyed on a large scale Download PDFInfo
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- CN208171201U CN208171201U CN201820712406.6U CN201820712406U CN208171201U CN 208171201 U CN208171201 U CN 208171201U CN 201820712406 U CN201820712406 U CN 201820712406U CN 208171201 U CN208171201 U CN 208171201U
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Abstract
The utility model provides a kind of optical curvature radius instrument that can survey radius on a large scale, including：Monochromatic point light source；The first microscope group of object lens can be transformed to the monochromatic point light source to be parallel to the directional light of optical axis；The second microscope group of object lens, can be by the parallel light focusing in the O point on optical axis；Tested mirror surface, can be by a portion of the emergent light of the second microscope group of object lens along former road reflection；The reflected light of tested mirror surface can be made 90 degree of reflections between the monochromatic point light source and the first microscope group of the object lens by beam splitter, setting；Film viewing screen can receive the reflected light of the beam splitter；Wherein, the tested mirror surface or the second microscope group of the object lens can be driven by clamper and be moved back and forth along optical axis.The utility model can expand the focal range of object lens, and then expand the range of the radius of curvature of measurement mirror surface using second group of series of object lens of different focal length.
Description
Technical field
The utility model relates to a kind of optical curvature radius instrument, it may also be used for survey the index of refraction in lens (material).
Background technique
Existing optical spherometer can be used for surveying the radius of curvature of recessed (convex) optical spherical surface, and principle is as shown in Figure 1, optics is first
Part is coaxially arranged, and light source 11 illuminates No.1 graticle 12, and the light of No.1 graticle 12 passes through beam splitter 13, autocollimatic microscope 14,
(focusing) is imaged at C, when tested 15 vertex of mirror surface is located at C point, is tested the light that mirror surface 15 reflects and returns to autocollimatic microscope 14,
(there is magnifying glass 17 to judge above No. two graticles 16 for observation) at No. two graticles 16 through 13 catoptric imaging of beam splitter again, when
Mobile tested mirror surface 15, when tested 15 centre of sphere of mirror surface being made to be located at C point, the light re-imaging through its reflection is in No. two graticles 16
Place, twice in imaging process, the mobile distance of tested mirror surface 15 is that the radius of curvature R of tested mirror surface 15 is recessed, R is convex for this.
Wherein, when surveying the radius of curvature on convex surface (as shown in the dotted line in figure on the left of C point), mirror surface is tested from C point to close
The mobile imaging in the microscopical direction of autocollimatic；When surveying the radius of curvature of concave surface (shown in solid on the right side of C point in such as figure), it is tested mirror surface
From C point to far from the mobile imaging in the microscopical direction of autocollimatic.
The deficiency of above-mentioned prior art is that the focal length of autocollimatic micro objective is shorter, and measured lens is towards certainly when surveying convex mirror
The mobile distance range of quasi- microcobjective is limited (tested crowning radius cannot be greater than this distance), thus the half of the convex mirror that can be surveyed
The range of diameter is little, and general only tens millimeters.In addition, existing optical spherometer generally cannot survey lens with simple method
Refractive index.
Utility model content
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, can be carried out to curvature mirror radius
Large-range measuring.
On this basis, the utility model can also improve, and can measure lens with relatively simple method
Refractive index.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of optical curvature radius instrument that can survey radius on a large scale, it is characterized in that including：
Monochromatic point light source；
The first microscope group of object lens can be transformed to the monochromatic point light source to be parallel to the directional light of optical axis；
The second microscope group of object lens, can be by the parallel light focusing in the O point on optical axis；
Tested mirror surface, can be by a portion of the emergent light of the second microscope group of object lens along former road reflection；
Beam splitter, setting, can be by tested mirror-reflections between the monochromatic point light source and the first microscope group of the object lens
Light back makees 90 degree of reflections；
Film viewing screen can receive the reflected light of the beam splitter；
Wherein, the tested mirror surface or the second microscope group of the object lens can be driven by clamper and back and forth be moved along optical axis
It is dynamic.
The optical curvature radius instrument that radius can be surveyed on a large scale, wherein：The monochrome point light source is shone by monochromatic light
It penetrates and is formed on aperture.
The optical curvature radius instrument that radius can be surveyed on a large scale, wherein：Further include scale, is parallel to the light
Axis arrangement.
The optical curvature radius instrument that radius can be surveyed on a large scale, wherein further include：
Plane mirror is located on the optical axis as the transmission light direction of the tested mirror surface of lens, and being used for will
Through the road the Guang Yanyuan reflection of the tested mirror surface；
Diaphragm is arranged in the reflecting surface side of the plane mirror, can adjust the reflecting surface of the plane mirror
Size.
The major advantage of the utility model is：Using second group of the object lens series of different focal length, pass through replacement object lens the
Two groups, the focal range of object lens can be expanded, and then expand the range of the radius of curvature of measurement mirror surface.
In addition, the utility model by tested mirror surface (for the lens) back side be arranged plane mirror, by measuring lens
Vertex focal length, the refractive index of tested mirror surface can be calculated, and predict its material indirectly, expand optical spherometer apply model
It encloses.
Detailed description of the invention
Fig. 1 is the structure principle chart of existing spherometer.
Fig. 2 is the structure principle chart of the optical curvature radius instrument provided by the utility model that can survey radius on a large scale.
Description of symbols：
Light source 11；No.1 graticle 12；Beam splitter 13；Autocollimatic microscope 14；Tested mirror surface 15；No. two graticles 16；It is bent
Rate radius R is recessed, R is convex；
Optical axis 20；Monochromatic light 21；Aperture 22；The first microscope group of object lens 23；The second microscope group of object lens 24；Tested mirror surface 25；Clamping
Device 26；Scale 27；Beam splitter 28；Film viewing screen 29；Plane mirror 30；Diaphragm 31；Vertex focal length Lf.
Specific embodiment
As shown in Fig. 2, the utility model provides a kind of optical curvature radius instrument that can survey radius on a large scale, including：
Monochromatic point light source is to be radiated on aperture 22 to be formed by monochromatic light 21 in the present embodiment；
The first microscope group of object lens 23 can be transformed to the monochromatic point light source to be parallel to the directional light of optical axis；
The second microscope group of object lens 24, can be by the parallel light focusing in the O point on optical axis；
Tested mirror surface 25, is driven by clamper 26, past along optical axis 20 on the light direction of second microscope group of object lens 24
It is multiple mobile, it can be by a portion of the emergent light of the second microscope group of object lens 24 along former road reflection；
Scale 27 is parallel to the optical axis 20 and arranges, for demarcating described in position and the calculating of the tested mirror surface 25
The moving distance of tested mirror surface 25；
Beam splitter 28, setting, can be by tested mirror surfaces between the monochromatic point light source and the first microscope group of the object lens 23
25 reflected light make 90 degree of reflections；
Film viewing screen 29 can receive the reflected light of the beam splitter 28.
Wherein, first microscope group of object lens 23, the second microscope group of object lens 24 are respectively the composite structure of several lens, specific group
As ordinary skill in the art means, it will not be described here.
When the utility model uses, when the vertex of tested mirror surface 25 (as shown in Fig. 2, by taking convex lens as an example) is located at O
When point (as shown in phantom in Figure 2), it is tested the light that mirror surface 25 reflects and returns, then be reflected into sharply defined image in film viewing screen through beam splitter 28
At 29, when mobile tested mirror surface 25, when the centre of sphere of tested mirror surface 25 being made to be located at O point, the light reflected through it again at sharply defined image in
At film viewing screen 29, twice in imaging process, being tested the mobile distance (can be read with scale 27) of spherical surface is tested spherical surface for this
Radius of curvature.
The second microscope group of object lens 24 in the utility model can be replaced, and when surveying the convex lens face of large radius of curvature, use
The second microscope group of object lens 24 of larger focal length；When measuring the convex lens face of smaller radius of curvature, then the object lens the of smaller focal length are used instead
Two microscope groups 24；When surveying the radius of curvature of concave mirror, then the second microscope group of object lens 24 of short focus is used.
Above-described embodiment can also do following replacement：The vertex position of tested mirror surface 25 is set as fixed, and the object lens
Second microscope group 24 is driven with the clamper 26, can be reciprocal between first microscope group of object lens 23 and the tested mirror surface 25
Mobile, same principle can successively be imaged at film viewing screen 29 twice, this is twice in imaging process, second mirror of object lens
The mobile distance (can be read with scale 27) of group 24 is the radius of curvature of tested spherical surface.
The utility model is by further adjustment, it may also be used for measures the refractive index of lens, i.e., as shown in Figure 1, further including：
Plane mirror 30 is located on the optical axis 20 of transmission light direction of the tested mirror surface 25 (for lens), uses
It is reflected in the road Guang Yanyuan that will transmit through the tested mirror surface 25；
Diaphragm 31 is arranged in the reflecting surface side of the plane mirror 30, can adjust the plane mirror 30
Reflecting surface size.
When the utility model measures the refractive index of lens, point light source through the first microscope group of object lens 23 and the second microscope group of object lens 24 at
As (focusings) is at O point, and when the vertex of tested mirror surface 25 is located at O point, the light return object lens of the reflection of mirror surface 25 are tested, then pass through
Beam splitter 28 is reflected into sharply defined image at film viewing screen 29, opens the diaphragm 31 between tested mirror surface 25 and plane mirror 30, puts down
Face reflective mirror works；At this point, mobile tested mirror surface 25, when the light beam between tested mirror surface 25 and plane mirror becomes directional light
When, the light for being reflected back tested mirror surface 25 through plane mirror converges at O point again, then by the second microscope group of object lens 24 and object lens the
One microscope group 23, and the sharply defined image of aperture 22 is obtained on film viewing screen 29 between this is imaged twice, is tested the mobile distance of mirror surface 25
Be the vertex focal length Lf of tested mirror surface 25, using two curvature radius, lens center thickness and the refractive index of Lf and lens it
Between functional relation, can be in the hope of the refractive index in measured lens face 25.Also, refractive index and optical material have one-to-one relationship, from
And the material of lens can be predicted by refractive index.
Above-described embodiment can equally do following replacement：The vertex position of tested mirror surface 25 is set as fixed, and the object
The second microscope group of mirror 24 is driven with the clamper 26, can be past between first microscope group of object lens 23 and the tested mirror surface 25
Multiple mobile, twice in imaging process, the mobile distance (can be read with scale 27) of second microscope group of object lens 24 is measured lens
The vertex focal length Lf in face 25.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, without departing from the spirit and scope defined by the claims, can many modifications may be made, variation or it is equivalent, but
It falls within the protection scope of the utility model.
Claims (4)
1. one kind can survey the optical curvature radius instrument of radius on a large scale, it is characterized in that including：
Monochromatic point light source；
The first microscope group of object lens can be transformed to the monochromatic point light source to be parallel to the directional light of optical axis；
The second microscope group of object lens, can be by the parallel light focusing in the O point on optical axis；
Tested mirror surface, can be by a portion of the emergent light of the second microscope group of object lens along former road reflection；
Beam splitter, setting can reflect tested mirror surface between the monochromatic point light source and the first microscope group of the object lens
Light make 90 degree reflect；
Film viewing screen can receive the reflected light of the beam splitter；
Wherein, the tested mirror surface or the second microscope group of the object lens can be driven by clamper and be moved back and forth along optical axis.
2. the optical curvature radius instrument according to claim 1 that radius can be surveyed on a large scale, it is characterised in that：The monochrome
Point light source is formed on aperture by monochromatic light exposure.
3. the optical curvature radius instrument according to claim 1 that radius can be surveyed on a large scale, it is characterised in that：It further include mark
Ruler is parallel to the optical axis arrangement.
4. the optical curvature radius instrument according to claim 1 that radius can be surveyed on a large scale, which is characterized in that further include：
Plane mirror is located on the optical axis as the transmission light direction of the tested mirror surface of lens, for will transmit through
The road Guang Yanyuan of the tested mirror surface is reflected；
Diaphragm is arranged in the reflecting surface side of the plane mirror, can adjust the reflecting surface size of the plane mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712406.6U CN208171201U (en) | 2018-05-14 | 2018-05-14 | The optical curvature radius instrument of radius can be surveyed on a large scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712406.6U CN208171201U (en) | 2018-05-14 | 2018-05-14 | The optical curvature radius instrument of radius can be surveyed on a large scale |
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| Publication Number | Publication Date |
|---|---|
| CN208171201U true CN208171201U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820712406.6U Active CN208171201U (en) | 2018-05-14 | 2018-05-14 | The optical curvature radius instrument of radius can be surveyed on a large scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272103A (en) * | 2020-02-28 | 2020-06-12 | 浙江大学 | Method for measuring spherical center and curvature radius of large-caliber spherical optical element |
-
2018
- 2018-05-14 CN CN201820712406.6U patent/CN208171201U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272103A (en) * | 2020-02-28 | 2020-06-12 | 浙江大学 | Method for measuring spherical center and curvature radius of large-caliber spherical optical element |
| CN111272103B (en) * | 2020-02-28 | 2020-12-25 | 浙江大学 | Method for measuring spherical center and curvature radius of large-caliber spherical optical element |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210615 Address after: 102600 Room 305, 3 / F, building 3, No.2 Shengfang Road, Daxing District, Beijing Patentee after: Beijing jingxinxing Technology Co.,Ltd. Address before: 100036 No.13, unit 1, building 16, yard 1, Wanshou Road, Haidian District, Beijing Patentee before: Wu Jintian |
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| TR01 | Transfer of patent right |