CN106551675A - A kind of binocular indirect ophthalmoscope with polarization function - Google Patents
A kind of binocular indirect ophthalmoscope with polarization function Download PDFInfo
- Publication number
- CN106551675A CN106551675A CN201510640499.7A CN201510640499A CN106551675A CN 106551675 A CN106551675 A CN 106551675A CN 201510640499 A CN201510640499 A CN 201510640499A CN 106551675 A CN106551675 A CN 106551675A
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- China
- Prior art keywords
- observation
- ophthalmoscope
- illumination
- light
- binocular indirect
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Abstract
The present invention relates to a kind of binocular indirect ophthalmoscope with polarization function, including eyepiece group, observation speculum group, object lens, light source, optically focused projection microscope group and illumination reflector, described eyepiece group, observation speculum group and object lens are successively set in observation optical path；Described light source, optically focused projection microscope group, illumination reflector and object lens are successively set in illumination path, and described ophthalmoscope also includes analyzing part, and described analyzing part is arranged in described observation optical path., by the analyzing part used in binocular indirect ophthalmoscope to eliminate the strong reflection and other reflection light disturbances of object lens and cornea, observing effect is more preferably for the present invention.
Description
Technical field
The present invention relates to a kind of ophthalmoscope, more particularly to a kind of binocular indirect ophthalmoscope with polarization function.
Background technology
Ophthalmoscope can be divided into two kinds of direct ophthalmoscope and indirect ophthalmoscope, and binocular indirect ophthalmoscope is mainly used in clinical examination of ocular fundus.Optical fundus are also called retina, be dispersed with human body above uniquely can directly, the blood capillary that arrives of clear view.Many diseases can cause specific reaction or complication, the such as cardiovascular disease such as hypertension, diabetes, thrombosis on optical fundus.By checking whether optical fundus have produced vascular lesionses, it is the Main Basiss of these diseases of early diagnosiss, early inspection, early diagnosis, early prevention are realized, effectively treatment is carried out to patient before the irreversible damage of retina is produced, thus examination of ocular fundus is had very important clinical meaning.
The effective rate of utilization of generally human eye retina's lighting source is only
0.001%~0.1%
, and the reflectance of cornea is which
20-2000
Times；Additionally, even if the objective lens surface of binocular indirect ophthalmoscope has been coated with antireflective coating, the intensity of its reflected light is also far longer than fundus reflex light.Therefore, the binocular indirect ophthalmoscope of current structure is vulnerable to the strong reflection and other reflection light disturbances of cornea and object lens, and observing effect is impacted.
Referring to Publication No.
US8262224B2
United States Patent (USP)：It discloses and be polarized and analyzing part while using in illumination path, by rotation in both any one changing its relative polarization angle, the intensity of illumination light is controlled with this, but which has reflected light and other reflection light disturbances, causes observing effect not good.
The content of the invention
It is an object of the invention to provide a kind of binocular indirect ophthalmoscope with polarization function, can be widely applied to medical diagnosis and therapy.
To reach above-mentioned purpose, the technical solution used in the present invention is：
A kind of binocular indirect ophthalmoscope with polarization function, including eyepiece group, observation speculum group, object lens, light source, optically focused projection microscope group and illumination reflector, described eyepiece group, observation speculum group and object lens are successively set in observation optical path；Described light source, optically focused projection microscope group, illumination reflector and object lens are successively set in illumination path, and described ophthalmoscope also includes analyzing part, and described analyzing part is arranged in described observation optical path.
Preferably, described ophthalmoscope also includes being polarized part, and the described part that is polarized is arranged in described illumination path.
It is further preferred that the described part that is polarized is arranged between described optically focused projection microscope group and illumination reflector.
It is further preferred that described analyzing part is arranged on the front portion of described eyepiece group.
It is further preferred that described analyzing part, the polarization direction for being polarized part have an angle, described angle between
0-90
Between degree.
It is further preferred that described polarizing part can switch in and out described illumination path.
It is further preferred that described analyzing part, being polarized part for polaroid, polarizing coating or polarizing crystals.
Preferably, polarization plates are provided between described observation speculum group, object lens, described polarization plates have observation light by region, illumination light by region, and described analyzing part is arranged on described observation light and passes through region.
It is further preferred that described ophthalmoscope also includes being polarized part, the described part that is polarized is arranged in described polarization plates, and passes through region positioned at described illumination light.
It is further preferred that described polarization plates can switch in and out described observation light passes through region by region, illumination light.
Preferably, described ophthalmoscope also includes dust-proof eyeglass, and described dust-proof eyeglass is located between the observation speculum group in described observation optical path and object lens, between the illumination reflector in described illumination path and object lens.
It is further preferred that having observation light by region, illumination light by region on described dust-proof eyeglass, described analyzing part is arranged on described observation light by region.
Preferably, described analyzing part can switch in and out described observation optical path.
Preferably, described light source is polarized light source.
As above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
, by the analyzing part used in the observation optical path in binocular indirect ophthalmoscope to eliminate the strong reflection and other reflection light disturbances of object lens and cornea, observing effect is more preferably for the present invention.
Description of the drawings
Accompanying drawing
1
For the schematic diagram of embodiment one；
Accompanying drawing
2
For the schematic diagram of embodiment two；
Accompanying drawing
3
For the schematic diagram of embodiment three；
Accompanying drawing
4
For the schematic diagram of example IV.
Wherein：
10a
, left eyepiece；
10b
, right eyepiece；
11a
, the first left observation reflecting mirror；
11b
, the second left observation reflecting mirror；
11c
, the first right observation reflecting mirror；
11d
, the second right observation reflecting mirror；
12
, object lens；
20
, light source；
21
, condenser lenss；
22
, diaphragm；
23
, projectoscope；
24
, illumination reflector；
30
, analyzing part；
31
, be polarized part；
4
, examinee's eye；
5
, dust-proof eyeglass；
50
, observation light pass through region；
51
, illumination light pass through region；
6
, polarization plates；
60
, observation light pass through region；
61
, illumination light pass through region.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
A kind of binocular indirect ophthalmoscope with polarization function, including eyepiece group, observation speculum group, object lens
12
, light source
20
, optically focused projection microscope group, illumination reflector
24
And dust-proof eyeglass
5
, wherein：Eyepiece group, observation speculum group, dust-proof eyeglass
5
And object lens
12
It is successively set in observation optical path；Light source
20
, optically focused projection microscope group, illumination reflector
24
, dust-proof eyeglass
5
And object lens
12
It is successively set in illumination path.
In observation optical path：Eyepiece group includes left eyepiece
10a
, right eyepiece
10b
；Observation speculum group includes the first left observation reflecting mirror
11a
, the second left observation reflecting mirror
11b
, the first right observation reflecting mirror
11c
And the second right observation reflecting mirror
11d
, left eyepiece
10a
, the first left observation reflecting mirror
11a
, the second left observation reflecting mirror
11b
Set gradually along left observation optical path direction；Right eyepiece
10b
, the first right observation reflecting mirror
11c
, the second right observation reflecting mirror
11d
Set gradually along right observation optical path direction.
In illumination path：Light source
20
Can select
LED
Lamp, Halogen light etc.；Optically focused projection microscope group includes the condenser lenss set gradually along illumination path direction
21
, diaphragm
22
And projectoscope
23
。
Embodiment one：
As schemed
1
It is shown：Ophthalmoscope also includes the analyzing part for being arranged on observation optical path
30
, analyzing part
30
Left eyepiece is located at respectively
10a
, right eyepiece
10b
Front portion.Analyzing part
30
Can polaroid, polarizing coating, or polarizing crystals material make.Analyzing part
30
Polarization direction can be adjusted as needed to control the power of reflected light, individually or all can also cut out light path.
The operation principle of the present embodiment is as follows：
Light source
20
The light for sending, passes sequentially through condenser lenss
21
, diaphragm
22
, projectoscope
23
By illumination reflector
24
Reflex to dust-proof eyeglass
5
, object lens
12
Illuminate examinee's eye
4
The tested region in optical fundus, while examinee's eye
4
Fundus reflex light Jing object lens
12
, dust-proof eyeglass
5
, observation speculum group, eyepiece group, analyzing part
30
It is imaged onto in observer's eye, object lens
12
With examinee's eye
4
Anterior corneal surface reflection high light and veiling glare due to analyzing part
30
It is weakened.
Embodiment two：
As schemed
2
Shown, ophthalmoscope also includes analyzing part
30
, be polarized part
31
, analyzing part
30
It is arranged in observation optical path, respectively positioned at left eyepiece
10a
, right eyepiece
10b
Front portion；It is polarized part
31
It is arranged in illumination path, and is located at projectoscope
23
And illumination reflector
24
Between.It is polarized part
31
Can polaroid, polarizing coating, or polarizing crystals material make, be polarized part
31
Polarization direction can be adjusted as needed to control the power of reflected light, individually or all can also cut out light path.In the present embodiment：Analyzing part
30
, be polarized part
31
Polarization direction there is angle, angle between
0-90
Between degree.
The operation principle of the present embodiment is as follows：
Light source
20
The light for sending, passes sequentially through condenser lenss
21
, diaphragm
22
, projectoscope
23
, be polarized part
31
By illumination reflector
24
Reflex to object lens
12
Illuminate examinee's eye
4
The tested region in optical fundus, while examinee's eye
4
Fundus reflex light Jing object lens
12
, observation speculum group, eyepiece group, analyzing part
30
It is imaged onto in observer's eye, object lens
12
With examinee's eye
4
Anterior corneal surface reflection high light and veiling glare due to analyzing part
30
Be polarized part
31
Polarization direction adjustment and it is weakened or be completely eliminated.
Embodiment three：
As schemed
3
It is shown：Ophthalmoscope also includes analyzing part
30
, be polarized part
31
, dustproof window
5
It is upper to pass through region with observation light
50
, illumination light pass through region
51
, analyzing part
30
It is arranged on observation light and passes through region
50
On, illumination light passes through region
51
For transparent；It is polarized part
31
It is arranged in illumination path, and is located at projectoscope
23
And illumination reflector
24
Between.
The operation principle of the present embodiment is as follows：
Light source
20
The light for sending, passes sequentially through condenser lenss
21
, diaphragm
22
, projectoscope
23
, be polarized part
31
, illumination reflector
24
, dustproof window
5
Illumination light pass through region
51
It is projected to object lens
12
Illuminate examinee's eye
4
The tested region in optical fundus, while examinee's eye
4
Fundus reflex light Jing object lens
12
, dustproof window
5
Observation light pass through region
50
（Analyzing part
30
）, observation speculum group, eyepiece group be imaged onto in observer's eye, object lens
12
With examinee's eye
4
Anterior corneal surface reflection high light and veiling glare due to analyzing part
30
Be polarized part
31
Polarization direction adjustment and it is weakened or be completely eliminated.
Example IV：
As schemed
4
It is shown：Ophthalmoscope also includes analyzing part
30
, be polarized part
31
, in dustproof window
5
And object lens
12
Between be provided with polarization plates
6
, polarization plates
6
Pass through region with observation light
60
, illumination light pass through region
61
, analyzing part
30
Observation light is set and passes through region
60
On, it is polarized part
61
Illumination light is arranged on by region
61
On.Polarization plates
6
Light path can all be cut out.
The operation principle of the present embodiment is as follows：
Light source
20
The light for sending, passes sequentially through condenser lenss
21
, diaphragm
22
, projectoscope
23
, illumination reflector
24
, dustproof window
6
, polarization plates
6
Illumination light pass through region
61
（It is polarized part
31
）Reflex to object lens
12
Illuminate examinee's eye
4
The tested region in optical fundus, while examinee's eye
4
Fundus reflex light Jing object lens
12
, polarization plates
6
Observation light pass through region
60
（Analyzing part
30
）, dustproof window
5
, observation speculum group, eyepiece group be imaged onto in observer's eye, object lens
12
With examinee's eye
4
Anterior corneal surface reflection high light and veiling glare due to polarization plates
6
It is weakened or be completely eliminated.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, should all be included within the scope of the present invention.
Claims (14)
1. a kind of binocular indirect ophthalmoscope with polarization function, including eyepiece group, observation speculum group, object lens, light source, optically focused projection microscope group and illumination reflector, described eyepiece group, observation speculum group and object lens are successively set in observation optical path；Described light source, optically focused projection microscope group, illumination reflector and object lens are successively set in illumination path, it is characterised in that：Described ophthalmoscope also includes analyzing part, and described analyzing part is arranged in described observation optical path.
2. a kind of binocular indirect ophthalmoscope with polarization function according to claim 1, it is characterised in that：Described ophthalmoscope also includes being polarized part, and the described part that is polarized is arranged in described illumination path.
3. a kind of binocular indirect ophthalmoscope with polarization function according to claim 2, it is characterised in that：The described part that is polarized is arranged between described optically focused projection microscope group and illumination reflector.
4. a kind of binocular indirect ophthalmoscope with polarization function according to claim 1 or 3, it is characterised in that：Described analyzing part is arranged on the front portion of described eyepiece group.
5. a kind of binocular indirect ophthalmoscope with polarization function according to claim 2, it is characterised in that：Described analyzing part, the polarization direction for being polarized part have angle, and described angle is between 0-90 degree.
6. a kind of binocular indirect ophthalmoscope with polarization function according to claim 2, it is characterised in that：Described polarizing part can switch in and out described illumination path.
7. a kind of binocular indirect ophthalmoscope with polarization function according to claim 2, it is characterised in that：Described analyzing part, part is polarized for polaroid, polarizing coating or polarizing crystals.
8. a kind of binocular indirect ophthalmoscope with polarization function according to claim 1, it is characterised in that：Polarization plates are provided between described observation speculum group, object lens, described polarization plates have observation light by region, illumination light by region, and described analyzing part is arranged on described observation light and passes through region.
9. a kind of binocular indirect ophthalmoscope with polarization function according to claim 8, it is characterised in that：Described ophthalmoscope also includes being polarized part, and the described part that is polarized is arranged in described polarization plates, and passes through region positioned at described illumination light.
10. a kind of binocular indirect ophthalmoscope with polarization function according to claim 8 or claim 9, it is characterised in that：Described polarization plates can switch in and out described observation light and pass through region by region, illumination light.
A kind of 11. binocular indirect ophthalmoscopes with polarization function according to claim 1, it is characterised in that：Described ophthalmoscope also includes dust-proof eyeglass, and described dust-proof eyeglass is located between the observation speculum group in described observation optical path and object lens, between the illumination reflector in described illumination path and object lens.
A kind of 12. binocular indirect ophthalmoscopes with polarization function according to claim 11, it is characterised in that：Have observation light by region, illumination light by region on described dust-proof eyeglass, described analyzing part is arranged on described observation light by region.
A kind of 13. binocular indirect ophthalmoscopes with polarization function according to claim 1, it is characterised in that：Described analyzing part can switch in and out described observation optical path.
A kind of 14. binocular indirect ophthalmoscopes with polarization function according to claim 1, it is characterised in that：Described light source is polarized light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640499.7A CN106551675A (en) | 2015-09-30 | 2015-09-30 | A kind of binocular indirect ophthalmoscope with polarization function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640499.7A CN106551675A (en) | 2015-09-30 | 2015-09-30 | A kind of binocular indirect ophthalmoscope with polarization function |
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| Publication Number | Publication Date |
|---|---|
| CN106551675A true CN106551675A (en) | 2017-04-05 |
Family
ID=58417429
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|---|---|---|---|
| CN201510640499.7A Pending CN106551675A (en) | 2015-09-30 | 2015-09-30 | A kind of binocular indirect ophthalmoscope with polarization function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976795A (en) * | 2017-11-24 | 2018-05-01 | 南京图思灵智能科技有限责任公司 | Binary channels tissue sample scanner and binary channels tissue sample digital imagery recurrence system |
| CN109288494A (en) * | 2018-12-11 | 2019-02-01 | 温州雷蒙光电科技有限公司 | A kind of binocular fundus camera |
| CN110353627A (en) * | 2018-08-13 | 2019-10-22 | 长春理工大学 | A kind of binophthalmoscope |
| CN111035359A (en) * | 2019-12-28 | 2020-04-21 | 重庆贝奥新视野医疗设备有限公司 | Stereoscopic imaging fundus camera system |
| CN113238351A (en) * | 2021-04-19 | 2021-08-10 | 影石创新科技股份有限公司 | Polarization type optical lens structure and imaging device |
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