CN104274152A - Medical refractormeter and refraction method thereof - Google Patents
Medical refractormeter and refraction method thereof Download PDFInfo
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- CN104274152A CN104274152A CN201410378355.4A CN201410378355A CN104274152A CN 104274152 A CN104274152 A CN 104274152A CN 201410378355 A CN201410378355 A CN 201410378355A CN 104274152 A CN104274152 A CN 104274152A
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- 210000001508 eye Anatomy 0.000 abstract description 48
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Abstract
The invention relates to optic devices, in particular to a medical refractormeter, which comprises a refractormeter body and a light source lens assembly, wherein the interior of the refractormeter body is provided with an illumination light source for sending detection light, the light source lens assembly is used for transmitting the detection light into a to-be-detected eyeball, the illumination light source is used for transmitting the light into the light source lens assembly, the emergent light of the light source lens assembly faces the to-be-detected eyeball, the ground of the to-be-detected eyeball generates reflective light, the reflective light is transmitted into a Shark-Hartmann wavefront sensor, the Shark-Hartmann wavefront sensor comprises a micro lens, and the light entry end of the micro lens is provided with a convex part. The refractormeter has the advantages that the Shark-Hartmann wavefront sensor is used as the detection device of the refractormeter, and the wave aberration of a human eye is measured by the detection technology of the Shark - Hartmann wavefront sensor; the high order aberration and low order aberration can be simultaneously detected.
Description
Technical field
The present invention relates to optical field, be specifically related to eye refractometer.
Background technology
Eyes are optical systems important in human body, and its optical property people also do not understand now completely.Now conventional armarium only can carry out quantitative measurement and correction to low order aberrations such as the out of focus (far away, myopia) in human eye aberration and astigmatisms (astigmatism), but also there is a certain amount of irregular higher order aberratons in human eye aberration, also have impact to the optical property of human eye except low order aberration.
The measuring method of existing eye refractometer has subjective measurement and objective measurement two kinds.Subjective measurement mainly contains spatial discrimination refractometer method, and objective measurement mainly contains laser beam tracking method.Adopt spatial discrimination refractometer method to have very large wavefront measurement dynamic range, but the method is subjective, for a long time consuming time.Laser beam tracking method is actually the reprint of the objective Wavefront detecting of spatial discrimination refractometer, this approach enhances the objectivity of detection, but still there is the error problem caused by factor such as luminous point skewness.
Existing eye refractometer accurately cannot be measured the aberration of human eye, therefore certainty of measurement is not high, and eye refractometer on the market cannot realize the high-acruracy survey needed for medical eye refractometer.
Summary of the invention
The object of the present invention is to provide a kind of medical eye refractometer and optometry method thereof, to solve at least one above-mentioned technical problem.
A kind of medical eye refractometer, comprise an eye refractometer main body, described eye refractometer main body comprises an optical measuring system, it is characterized in that, is provided with a source of parallel light, a light lens group in described optical measuring system;
Described light lens group comprises one first polarization spectroscope, and the light emission direction of described source of parallel light and the reflective surface of described first polarization spectroscope are 45 ° of angles, and the reflection direction of described first polarization spectroscope is provided with emergent pupil mouth;
First polarization spectroscope rear is provided with a Shack-Hartmann wavefront sensor, arrange successively before and after described emergent pupil mouth, described first polarization spectroscope, described Shack-Hartmann wavefront sensor, the line of described emergent pupil mouth and described Shack-Hartmann wavefront sensor and the reflective surface of described first polarization spectroscope are 45 ° of angles.
Shack-Hartmann wavefront sensor as the checkout gear needed for eye refractometer, utilizes the Detection Techniques of Shack-Hartmann wavefront sensor to measure aberration of human eye by the present invention, can detect higher order aberratons and low order aberration simultaneously.By light beam after light lens group, incide human eye, after human eye fundus reflex, the reflected light carrying glances aberration goes out to inject Shack-Hartmann wavefront sensor from human eye pupil, utilizes the detection of the aberration of Hartmann wave front sensor and recovery technique to provide aberration of human eye.The emergent light of described light lens group is towards eyeball to be measured, and generate a reflected light on the optical fundus of described eyeball to be measured, described reflected light is transmitted into a Shack-Hartmann wavefront sensor, and described reflected light is towards the photosurface of described Shack-Hartmann wavefront sensor.
Described light lens group also comprises one second polarization spectroscope, the light emission direction of described source of parallel light and the reflective surface of described second polarization spectroscope are 45 ° of angles, the reflective surface of described second polarization spectroscope is towards the reflective surface of described first polarization spectroscope, and the light-emitting area of described second polarization spectroscope is parallel to the reflective surface of described first polarization spectroscope.
By being provided with the second polarization spectroscope on the light emission direction of source of parallel light, described source of parallel light after described second polarization spectroscope reflection towards the reflective surface of described first polarization spectroscope, polarization spectroscope has polarization characteristic in order to eliminate veiling glare, the present invention improves by being provided with two polarization spectroscopes the effect eliminating veiling glare, in addition, relation is put in order under the prerequisite of saving optical path space in position according to two polarization spectroscopes and light source, improves certainty of measurement.
Described Shack-Hartmann wavefront sensor comprises a lenticule, and described lenticular light inputting end is provided with projection.
As a kind of preferred version, described Shack-Hartmann wavefront sensor, comprises a ccd image sensor; The sensitive surface of described ccd image sensor is towards described lenticular bright dipping place.CCD image quality is high, low noise.The array light spot image of lenticule formation is gathered by described ccd image sensor.
As a kind of preferred version, described Shack-Hartmann wavefront sensor, also comprises a cmos image sensor; The sensitive surface of described cmos image sensor is towards described lenticular bright dipping place.Compared with ccd image sensor, it is little that cmos image sensor has volume, power consumption less than 1/10 of ccd image sensor, price also more cheap than ccd image sensor 1/3 advantage.Lens meter can reduce costs after adopting cmos image sensor further.The array light spot image of lenticule formation is gathered by described cmos image sensor.
Described Shack-Hartmann wavefront sensor connects a signal processing module, and described signal processing module connects a display screen.For the numerical value of display measurement.
Described lenticule comprises a transparent substrate, crisscrossly on described transparent substrate is provided with at least 200 projections;
Described projection adjacent in described at least 200 projections is fixedly connected with.
By not being provided with interval by between projection, effectively prevent and be provided with interval between the adjacent projection of conventional microlens and the mutual absorbance that causes is inconsistent, easily produce the phenomenon of veiling glare.Be convenient to focus on.
Described lenticular light inputting end is not provided with prominence and is evenly coated with a light blocking layer.Avoid veiling glare, improve imaging efficiency.
Described eye refractometer main body, also comprises an automatic tracking system, and described automatic tracking system comprises a projector mechanism, and the light-emitting window of described projector mechanism is positioned at emergent pupil mouth;
Also comprise an image mechanism, the light inlet of described image mechanism is positioned at described emergent pupil mouth;
The rear of described emergent pupil mouth is provided with one first beam splitter, described first beam splitter one facing to the imaging substrate of described projector mechanism, the another side of described first beam splitter is towards the chip photosurface of described image mechanism;
Described imaging substrate is arranged in an auto-translating mechanism, and described auto-translating mechanism comprises a motor, a drive system, a moving component, and described imaging substrate is fixed on moving component;
Also comprise a processor system, the signal input part of described processor system connects the signal output part of described image mechanism, and the signal output part of described processor system connects a Motor Control mechanism, and described Motor Control mechanism connects described motor.
The present invention is combined with image mechanism by projector mechanism, goes detection emergent pupil mouth and optometry person's pupil to depart from situation, the imaging contexts on optometry person's pupil by auto-translating mechanism and then adjustment projector mechanism.Emergent pupil mouth is observation place of eyeball to be measured.
Described processor system can be Single Chip Microcomputer (SCM) system, ARM system or other similar compact processor systems.
Described first beam splitter is provided with the chip photosurface of reflecting surface side towards described image mechanism; Described first beam splitter non-reflecting surface side is towards the imaging substrate of described projector mechanism.
Described automatic tracking system is positioned at and moves matrix, a fixing base is provided with below described mobile matrix, be provided with an elevating mechanism for driving described mobile matrix to move up and down between described fixing base and described mobile matrix, the signal output part of described processor system connects the signal input part of described elevating mechanism.Thus control moving up and down of mobile matrix, then control the relative position of emergent pupil mouth and eye person's pupil.
Be provided with a travel mechanism for driving described mobile matrix all around to move between described fixing base and described mobile matrix, the signal output part of described processor system connects the signal input part of described travel mechanism.Thus control all around two-dimensional motion of mobile matrix, then control the relative position of emergent pupil mouth and eye person's pupil.
Described elevating mechanism and described travel mechanism form a three-dimensional motion mechanism.So that described mobile matrix phase carries out the three-dimensional motion of three the direction dimensions in top to bottom, left and right, front and rear for described fixing base.
Described image mechanism, comprises cmos sensor, and described cmos sensor is positioned on the reflection direction of described first beam splitter, and the reflecting surface of the induction direction of described cmos sensor and described first beam splitter is 45 ° of angles.
Also comprise one second beam splitter, described second beam splitter one facing to described first beam splitter, the another side of described second beam splitter is towards described optical measuring system;
Described second beam splitter is positioned at the right side of described first beam splitter, and the reflecting surface of described first beam splitter is towards the reflecting surface of described second beam splitter, and the reflecting surface of described first beam splitter and the reflecting surface of described second beam splitter are parallel to each other;
Described emergent pupil mouth, described second beam splitter, described optical measuring system fore-and-aft direction are arranged successively.
The present invention by the combination of the first beam splitter and the second beam splitter, thus achieves the synchronicity of optical measuring system and projector mechanism, image mechanism.After automatic tracking system of the present invention regulates the position of emergent pupil mouth, namely measure by the aberration of optical measuring system to human eye.
Described eye refractometer main body comprises a housing, described housing is provided with a display screen, described housing is also provided with a rotating shaft, and described display screen is provided with the installing hole matched with described rotating shaft, and described display screen is rotationally connected with coordinating of installing hole by described rotating shaft with described housing.
Described eye refractometer main body is also provided with a head supporting frame, described head supporting frame is positioned at the rear of described housing, and be fixedly connected with described housing, the upper end of described head supporting frame is provided with a rectangular aperture, four diagonal angles place of described rectangular aperture is equipped with transition arc, and the radius of described transition arc is 3 ~ 10cm;
The central authorities of described rectangular aperture are provided with a bracket, and described bracket comprises a lower jaw and places plate, and the upper surface that described lower jaw places plate is provided with a curved indentations.
The present invention, by being adjusted to rotating display screen at the eye refractometer of conventional fixed-type display screen, is convenient to the comfortableness of checking data of operated by personnel's eye refractometer.The present invention by bracket is provided with curved indentations, is convenient to match with the chin of the person that joins mirror, improve the person that joins mirror join mirror time comfort level.
Described rectangular aperture comprises cross tube, the two ends of described cross tube are respectively equipped with a montant, and described montant longitudinal section is in the longitudinal direction a shaped form structure;
The outline of described shaped form structure comprises the curve of at least two different curvature, the first curve, the second curve respectively, described first curve is positioned at the top of described second curve, described first bent curvature of a curve is greater than described second bent curvature of a curve, and the end points that the end points above described first curve is positioned at and described second curve are positioned at below is in same as on the straight line of horizontal plane;
Described montant longitudinal section is in the direction of the width a linear type.
Accompanying drawing explanation
Fig. 1 is a kind of overall schematic of optical measuring system light channel structure of the present invention;
Fig. 2 is a kind of overall schematic of automatic tracking system light channel structure of the present invention;
Fig. 3 is a kind of concrete structure schematic diagram of light channel structure of the present invention;
Fig. 4 is the lenticular a kind of structural representation of the present invention;
Fig. 5 is the top view that lenticule of the present invention adopts Fig. 4 structure;
Fig. 6 is the lenticular a kind of partial enlarged drawing of the present invention;
Fig. 7 is a kind of structural representation of the present invention;
Fig. 8 is the right view that the present invention adopts Fig. 7 structure.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
With reference to Fig. 1, Fig. 2, Fig. 3, a kind of medical eye refractometer, comprise an eye refractometer main body, eye refractometer main body comprises an optical measuring system, is provided with a source of parallel light, a light lens group 11 in optical measuring system; Light lens group 11 comprises one first polarization spectroscope 21, and the light emission direction of source of parallel light and the reflective surface of the first polarization spectroscope 21 are 45 ° of angles, and the reflection direction of the first polarization spectroscope 21 is provided with emergent pupil mouth 12; First polarization spectroscope 21 rear is provided with a Shack-Hartmann wavefront sensor 13, arrange successively before and after emergent pupil mouth 12, first polarization spectroscope 21, Shack-Hartmann wavefront sensor 13, emergent pupil mouth 12 is 45 ° of angles with the line of Shack-Hartmann wavefront sensor 13 and the reflective surface of the first polarization spectroscope 21.Shack-Hartmann wavefront sensor 13 as the checkout gear needed for eye refractometer, utilizes the Detection Techniques of Shack-Hartmann wavefront sensor 13 to measure aberration of human eye by the present invention, can detect higher order aberratons and low order aberration simultaneously.By light beam after light lens group 11, incide human eye, after human eye fundus reflex, the reflected light carrying glances aberration goes out to inject Shack-Hartmann wavefront sensor 13 from human eye pupil, utilizes the detection of the aberration of Hartmann wave front sensor and recovery technique to provide aberration of human eye.Emergent pupil mouth 12 is observation place of eyeball to be measured.The emergent light of light lens group 11, towards eyeball to be measured, generates a reflected light on the optical fundus of eyeball to be measured, and reflected light is transmitted into a Shack-Hartmann wavefront sensor 13, and reflected light is towards the photosurface of Shack-Hartmann wavefront sensor 13.Emergent pupil mouth 12 is observation place of eyeball to be measured, imaging place of projector mechanism.
Light lens group 11 also comprises one second polarization spectroscope 22, the light emission direction of source of parallel light and the reflective surface of the second polarization spectroscope 22 are 45 ° of angles, the reflective surface of the second polarization spectroscope 22 is towards the reflective surface of the first polarization spectroscope 21, and the light-emitting area of the second polarization spectroscope 22 is parallel to the reflective surface of the first polarization spectroscope 21.Source of parallel light after the second polarization spectroscope 22 reflects towards the reflecting surface of the first polarization spectroscope 21, polarization spectroscope has polarization characteristic in order to eliminate veiling glare, the present invention improves by being provided with two polarization spectroscopes the effect eliminating veiling glare, in addition, relation is put in order under the prerequisite of saving optical path space in position according to two polarization spectroscopes and light source, improves certainty of measurement.
Eye refractometer main body, also comprises an automatic tracking system, and automatic tracking system comprises a projector mechanism 5, and the light-emitting window of projector mechanism 5 is positioned at emergent pupil mouth 12; Also comprise an image mechanism 3, the light inlet of image mechanism 3 is positioned at emergent pupil mouth 12; The rear of emergent pupil mouth 12 is provided with one of one first beam splitter 24, first beam splitter 24 facing to the imaging substrate of projector mechanism 5, and the another side of the first beam splitter 24 is towards the chip photosurface of image mechanism 3; Imaging substrate is arranged in an auto-translating mechanism, and auto-translating mechanism comprises a motor, a drive system, a moving component, and imaging substrate is fixed on moving component; Also comprise a processor system, the signal input part of processor system connects the signal output part of image mechanism 3, and the signal output part of processor system connects a Motor Control mechanism, and Motor Control mechanism connects motor.
The present invention is combined with image mechanism 3 by projector mechanism 5, goes to detect emergent pupil mouth 12 and departs from situation with optometry person's pupil, the imaging contexts on optometry person's pupil by auto-translating mechanism and then adjustment projector mechanism 5.Emergent pupil mouth 12 is observation place of eyeball to be measured.
Processor system can be Single Chip Microcomputer (SCM) system, ARM system or other similar compact processor systems.
First beam splitter 24 is provided with the chip photosurface of reflecting surface side towards image mechanism 3; First beam splitter 24 non-reflecting surface side is towards the imaging substrate of projector mechanism 5.
Automatic tracking system is positioned at and moves matrix, a fixing base is provided with below mobile matrix, be provided with an elevating mechanism for driving mobile matrix to move up and down between fixing base and mobile matrix, the signal output part of processor system connects the signal input part of elevating mechanism.Thus control moving up and down of mobile matrix, then control the relative position of emergent pupil mouth 12 and eye person's pupil.
Be provided with a travel mechanism for driving mobile matrix all around to move between fixing base and mobile matrix, the signal output part of processor system connects the signal input part of travel mechanism.Thus control all around two-dimensional motion of mobile matrix, then control the relative position of emergent pupil mouth 12 and eye person's pupil.
Elevating mechanism and travel mechanism form a three-dimensional motion mechanism.So that mobile matrix phase carries out the three-dimensional motion of three the direction dimensions in top to bottom, left and right, front and rear for fixing base.
Image mechanism 3, comprises cmos sensor, and cmos sensor is positioned on the reflection direction of the first beam splitter 24, and the reflecting surface of the induction direction of cmos sensor and the first beam splitter 24 is 45 ° of angles.
Also comprise one second beam splitter 23, second beam splitter 23 one facing to the another side of the first beam splitter 24, second beam splitter 23 towards optical measuring system; Second beam splitter 23 is positioned at the right side of the first beam splitter 24, and the reflecting surface of the first beam splitter 24 is towards the reflecting surface of the second beam splitter 23, and the reflecting surface of the first beam splitter 24 and the reflecting surface of the second beam splitter 23 are parallel to each other; Emergent pupil mouth 12, second beam splitter 23, optical measuring system fore-and-aft direction are arranged successively.The present invention by the combination of the first beam splitter 24 and the second beam splitter 23, thus achieves the synchronicity of optical measuring system and projector mechanism 5, image mechanism 3.After automatic tracking system of the present invention regulates the position of emergent pupil mouth 12, namely measure by the aberration of optical measuring system to human eye.
Shack-Hartmann wavefront sensor 13 comprises a lenticule, and lenticular light inputting end is provided with projection.
As a kind of preferred version, Shack-Hartmann wavefront sensor 13, comprises a ccd image sensor; The sensitive surface of ccd image sensor is towards lenticular bright dipping place.CCD image quality is high, low noise.The array light spot image of lenticule formation is gathered by ccd image sensor.
As a kind of preferred version, Shack-Hartmann wavefront sensor 13, also comprises a cmos image sensor; The sensitive surface of cmos image sensor is towards lenticular bright dipping place.Compared with ccd image sensor, it is little that cmos image sensor has volume, power consumption less than 1/10 of ccd image sensor, price also more cheap than ccd image sensor 1/3 advantage.Lens meter can reduce costs after adopting cmos image sensor further.The array light spot image of lenticule formation is gathered by cmos image sensor.
Shack-Hartmann wavefront sensor connects a signal processing module, and signal processing module connects a display screen.For the numerical value of display measurement.
Signal processing module and processor system share a signal processing system, and signal processing system can be Single Chip Microcomputer (SCM) system.
Lenticule comprises a transparent substrate, crisscrossly on transparent substrate is provided with at least 200 projections; Projection adjacent at least 200 projections is fixedly connected with.By not being provided with interval by between projection, effectively prevent and be provided with interval between the adjacent projection of conventional microlens and the mutual absorbance that causes is inconsistent, easily produce the phenomenon of veiling glare.Be convenient to focus on.Lenticular light inputting end is not provided with prominence and is evenly coated with a light blocking layer.Avoid veiling glare, improve imaging efficiency.
See Fig. 4, Fig. 5, Fig. 6, lenticule 1 comprises a transparent substrate, crisscrossly on transparent substrate is provided with at least 200 projections 2; Projection 2 adjacent at least 200 projections 2 is fixedly connected with.By not being provided with interval by between projection 2, effectively prevent and be provided with interval between the adjacent projection of conventional microlens 12 and the mutual absorbance that causes is inconsistent, easily produce the phenomenon of veiling glare.Be convenient to focus on.The light inputting end of lenticule 1 is not provided with projection 2 place and is evenly coated with a light blocking layer.Avoid veiling glare, improve imaging efficiency.
Projection 2 comprises top, bottom, and top is fixedly connected with bottom, and to form a dome-type projection 2, bottom is cuboid, and cross section and the longitudinal section on top are curved, and the radian of arc is not more than 180 °.Be preferably, the radian of arc is not more than 90 °, is not less than 30 °.Thus realize high index of refraction.The length of cuboid is not less than 0.3mm, and is not more than 0.5mm; Widely be not less than 0.3mm, and be not more than 0.5mm; Height is not less than 7 μm, and is not more than 11 μm.
The bottom of dome-type projection 2 adjacent at least 200 dome-type projections 2 is mutually permanently connected into a cuboid-type transmittance section; The length of cuboid-type transmittance section is not less than 5mm, and is not more than 8mm; Widely be not less than 5mm, and be not more than 8mm; Height is not less than 7 μm, and is not more than 11 μm.
The antetheca of cuboid-type transmittance section, rear wall, Zuo Bi, You Bishang are provided with light blocking layer.Thus realize going to the bottom of cuboid-type transmittance section and carry out printing opacity, carry out optically focused by being provided with an arcuate structure above rectangle transmittance section.The length of transparent substrate 1 is not less than 12mm, is not more than 16mm; The wide of transparent substrate 1 is not less than 12mm, is not more than 16mm; The height of transparent substrate 1 is not less than 1mm, is not more than 3mm.
Light blocking layer can be the light blocking layer applied by AZ optical cement.AZ positive photoresist when thickness is greater than 10 μm, at the ultraviolet region printing opacity hardly of 200 ~ 285nm.
See Fig. 7, Fig. 8, eye refractometer main body comprises a housing, and housing is provided with a display screen 31, and housing is also provided with a rotating shaft, and display screen 31 is provided with the installing hole matched with rotating shaft, and display screen 31 is rotationally connected with coordinating of installing hole by rotating shaft with housing; Eye refractometer main body is also provided with a head supporting frame 32, head supporting frame 32 is positioned at the rear of housing, and is fixedly connected with housing.The upper end of head supporting frame 32 is provided with a rectangular aperture 35, and four diagonal angles place of rectangular aperture 35 is equipped with transition arc, and the radius of transition arc is 3 ~ 10cm; The central authorities of rectangular aperture 35 are provided with a bracket 34, and bracket 34 comprises a lower jaw and places plate, and the upper surface that lower jaw places plate is provided with a curved indentations.The present invention, by being adjusted to rotating display screen 31 at the eye refractometer of conventional fixed-type display screen 31, is convenient to the comfortableness of checking data of operated by personnel's eye refractometer.The present invention is by being provided with transition arc by the profile of head supporting frame 32, and bracket 34 is provided with curved indentations, is convenient to match with the chin of the person that joins mirror, improve the person that joins mirror join mirror time comfort level.
Rectangular aperture comprises cross tube, the two ends of cross tube are respectively equipped with a montant, in a shaped form structure on montant longitudinal section in the longitudinal direction; The outline of shaped form structure comprises the curve of at least two different curvature, the first curve, the second curve respectively, first curve is positioned at the top of the second curve, first bent curvature of a curve is greater than the second bent curvature of a curve, and the end points that the end points above the first curve is positioned at and the second curve are positioned at below is in same as on the straight line of horizontal plane; Montant longitudinal section is in the direction of the width a linear type.
The limit, left side of the first curve and the second Surface forming shaped form structure, shaped form structure is the shaped form structure of first-class width, the limit, left side of shaped form structure is by the 3rd curve, 4th curve is formed, 3rd bent curvature of a curve is consistent with the first bent curvature of a curve, and the 4th bent curvature of a curve is consistent with the second bent curvature of a curve.First curve is connected with the 3rd curve negotiating the 5th curve, the 5th curve to be a radian the be circular arc of 180 °.
Also can be that the outline of shaped form structure also comprises a vertical line segment, and the lower extreme point of vertical line segment connects the upper extreme point of the first curve;
The outline of shaped form structure also comprises the 3rd curve, the 4th curve, 3rd curve, the 4th curve are positioned at the right of vertical line segment, the first curve and the second curve, the upper extreme point of the upper extreme point vertical connecting line segment of the 3rd curve, the lower extreme point of the 3rd curve connects the upper extreme point of the 4th curve.
3rd bent curvature of a curve is less than the first bent curvature of a curve, and the 4th bent curvature of a curve is less than the second bent curvature of a curve.The lower extreme point of the second curve and the 4th curve is on same level straight line.
Bracket 34 also comprises a telescopic supporting rod, and telescopic supporting rod is positioned at the central authorities below that lower jaw places plate, and telescopic supporting rod connects a motor by a drive disk assembly.Thus realize bracket 34 relative to head supporting frame 32 in moving up and down, meet ergonomics, ensure the comfort level when person that joins mirror of different height section carries out optometry.Telescopic supporting rod comprises a fixed bar, an expansion link, and fixed bar and expansion link are slidably connected, and the lower surface that upper end and the lower jaw of expansion link place plate is fixedly connected with; Fixed bar is fixedly connected with head supporting frame 3.
The upper end left surface of housing is provided with the rotation position of display screen 31, and the longitudinal section rotating position comprises an angled straight lines and one second circular arc, and angled straight lines is fixedly connected with the second circular arc; The junction point of angled straight lines and the second circular arc is higher than the bottom of display screen 31.Be convenient to display screen 31 by the second circular arc rotate relative to housing on rotation position.
The radian of the second circular arc is not more than 180 °, and is not less than 45 °, and the radius of the second circular arc is not more than 10cm, and is not less than 3cm; Angle in angled straight lines and horizontal direction is not less than 25 °, and is not more than 45 °.Head supporting frame 32 is positioned at the right part of housing.
Display screen 31 is provided with an installation portion, and installation position is in the right opposite of display screen 31 display surface, and mounting hole site is on installation portion.Installation portion is an outstanding structure, and the centre rotating position is provided with the groove matched with outstanding structure, is provided with institute's rotating shaft in groove.Be convenient to the rotation of display screen 31.
Flexible body is provided with in curved indentations.Improve person's chin of joining mirror and be positioned over comfort level on curved indentations.Radius of curvature on curved indentations fore-and-aft direction is greater than the radius of curvature on curved indentations left and right directions.Thus more meet the profile of human body lower jaw.
An optometry method for eye refractometer, comprises following several step:
1) automatic tracking system work, image mechanism connection handling device system, by processor system drive mobile matrix up and down before and after three-dimensional translation, emergent pupil mouth generate one clearly as;
2) processor system connects an optical measuring system.
Carry out measuring the relevant parameter needed for optometry.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not by the restriction of above-mentioned using method; what describe in above-mentioned using method and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a medical eye refractometer, comprises an eye refractometer main body, and described eye refractometer main body comprises an optical measuring system, it is characterized in that, is provided with a source of parallel light, a light lens group in described optical measuring system;
Described light lens group comprises one first polarization spectroscope, and the light emission direction of described source of parallel light and the reflective surface of described first polarization spectroscope are 45 ° of angles, and the reflection direction of described first polarization spectroscope is provided with emergent pupil mouth;
First polarization spectroscope rear is provided with a Shack-Hartmann wavefront sensor, arrange successively before and after described emergent pupil mouth, described first polarization spectroscope, described Shack-Hartmann wavefront sensor, the line of described emergent pupil mouth and described Shack-Hartmann wavefront sensor and the reflective surface of described first polarization spectroscope are 45 ° of angles.
2. the medical eye refractometer of one according to claim 1, it is characterized in that, described light lens group also comprises one second polarization spectroscope, the light emission direction of described source of parallel light and the reflective surface of described second polarization spectroscope are 45 ° of angles, the reflective surface of described second polarization spectroscope is towards the reflective surface of described first polarization spectroscope, and the light-emitting area of described second polarization spectroscope is parallel to the reflective surface of described first polarization spectroscope.
3. the medical eye refractometer of one according to claim 1, is characterized in that, described Shack-Hartmann wavefront sensor comprises a lenticule, and described lenticular light inputting end is provided with projection;
Described lenticule comprises a transparent substrate, crisscrossly on described transparent substrate is provided with at least 200 projections;
Described projection adjacent in described at least 200 projections is fixedly connected with.
4. the medical eye refractometer of one according to claim 3, is characterized in that, described lenticular light inputting end is not provided with prominence and is evenly coated with a light blocking layer.
5. the medical eye refractometer of one according to claim 1, is characterized in that, described eye refractometer main body, also comprises an automatic tracking system, and described automatic tracking system comprises a projector mechanism, and the light-emitting window of described projector mechanism is positioned at emergent pupil mouth;
Also comprise an image mechanism, the light inlet of described image mechanism is positioned at described emergent pupil mouth;
The rear of described emergent pupil mouth is provided with one first beam splitter, described first beam splitter one facing to the imaging substrate of described projector mechanism, the another side of described first beam splitter is towards the chip photosurface of described image mechanism;
Described imaging substrate is arranged in an auto-translating mechanism, and described auto-translating mechanism comprises a motor, a drive system, a moving component, and described imaging substrate is fixed on moving component;
Also comprise a processor system, the signal input part of described processor system connects the signal output part of described image mechanism, and the signal output part of described processor system connects a Motor Control mechanism, and described Motor Control mechanism connects described motor.
6. the medical eye refractometer of one according to claim 5, is characterized in that, described first beam splitter is provided with the chip photosurface of reflecting surface side towards described image mechanism; Described first beam splitter non-reflecting surface side is towards the imaging substrate of described projector mechanism.
7. the medical eye refractometer of one according to claim 5, it is characterized in that, described automatic tracking system is positioned at and moves matrix, a fixing base is provided with below described mobile matrix, be provided with an elevating mechanism for driving described mobile matrix to move up and down between described fixing base and described mobile matrix, the signal output part of described processor system connects the signal input part of described elevating mechanism.
8. the medical eye refractometer of one according to claim 5, it is characterized in that, described image mechanism, comprise cmos sensor, described cmos sensor is positioned on the reflection direction of described first beam splitter, and the reflecting surface of the induction direction of described cmos sensor and described first beam splitter is 45 ° of angles.
9. the medical eye refractometer of one according to claim 5, is characterized in that, also comprises one second beam splitter, described second beam splitter one facing to described first beam splitter, the another side of described second beam splitter is towards described optical measuring system;
Described second beam splitter is positioned at the right side of described first beam splitter, and the reflecting surface of described first beam splitter is towards the reflecting surface of described second beam splitter, and the reflecting surface of described first beam splitter and the reflecting surface of described second beam splitter are parallel to each other;
Described emergent pupil mouth, described second beam splitter, described optical measuring system fore-and-aft direction are arranged successively.
10. the medical eye refractometer of one according to claim 1, it is characterized in that, described eye refractometer main body comprises a housing, described housing is provided with a display screen, described housing is also provided with a rotating shaft, described display screen is provided with the installing hole matched with described rotating shaft, and described display screen is rotationally connected with coordinating of installing hole by described rotating shaft with described housing;
Described eye refractometer main body is also provided with a head supporting frame, described head supporting frame is positioned at the rear of described housing, and be fixedly connected with described housing, the upper end of described head supporting frame is provided with a rectangular aperture, four diagonal angles place of described rectangular aperture is equipped with transition arc, and the radius of described transition arc is 3 ~ 10cm;
The central authorities of described rectangular aperture are provided with a bracket, and described bracket comprises a lower jaw and places plate, and the upper surface that described lower jaw places plate is provided with a curved indentations.
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