CN102283631A - Hartmann dynamic aberration measuring apparatus capable of inducing human eyes to autonomously regulate - Google Patents
Hartmann dynamic aberration measuring apparatus capable of inducing human eyes to autonomously regulate Download PDFInfo
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- CN102283631A CN102283631A CN2010102531577A CN201010253157A CN102283631A CN 102283631 A CN102283631 A CN 102283631A CN 2010102531577 A CN2010102531577 A CN 2010102531577A CN 201010253157 A CN201010253157 A CN 201010253157A CN 102283631 A CN102283631 A CN 102283631A
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Abstract
The invention discloses a Hartmann dynamic aberration measuring apparatus capable of inducing human eyes to autonomously regulate, which comprises the structure that a first spectroscope, an imaging objective lens and a front group of focusing objective lens are positioned inside a casing and are fixedly connected with the casing; a first moving mechanism and a second moving mechanism are fixed on the casing; an inducing and regulating system is respectively connected with the first moving mechanism and the second moving mechanism and is used for controlling the first moving mechanism and the second moving mechanism to move; a optical mechanism is fixed on the second moving mechanism; the second moving mechanism is loaded with the optical mechanism to do linear translation relative to the front group of focusing objective lens; the linear translation is the linear translation parallel to a primary optical axis of the optical mechanism and is used for compensating diopter generated by regulating eyes; and a moving sighting target is arranged on the first moving mechanism to do linear translation perpendicular to the primary optical axis of the optical mechanism and is used for inducing human eyes to be measured to generate the regulation so as to simulate the dioptric state for the human eyes to look at near objects.
Description
Technical field
The invention belongs to field of optical measuring technologies, relate to a kind of human eye of inducing from the dynamic aberration measurement instrument of the Hartmann of main regulation.
Background technology
The research of human eye higher order aberratons has become the emphasis of international optometry research, and the measurement of human eye higher order aberratons also becomes the development trend that international ophthalmology detects.The human eye aberration Hartmann measuring instrument of Chinese Academy of Sciences's photoelectric technology Research Institute (hereinafter to be referred as the aberration measurement instrument) has been realized accurate measurement (relevant achievement patented Granted publication CN2683020Y, CN 2683021Y, CN 2698271Y and the CN 2698270Y of living human eye higher order aberratons; And patent publication No. CN 1601231A).
Human eye is to produce dioptrics and regulate by changing lenticular two surfaces, makes can see target clearly in the space of human eye between near point and far point.Some significant change has taken place in higher order aberratons in the process of regulating, but owing to there is not practicality objective research tool, regulate change and the mutual relation of higher order aberratons fluctuation also unclear.The design that is used for the correction for higher order aberrations pattern of excimer laser surgery on the other hand at present be according to gather before the operation by the higher order aberratons under the corrective ophthalmic moment resting state, it is the time and space characteristic process of a dynamic change that the human eye higher order aberratons has been ignored in this design, only be conceived to the rectification of a certain resting state aberration data, must cause correction result to produce error.So analyze the influence of higher order aberratons, significance arranged to rationally carrying out customized human eye optical correction pattern and design for scheme to regulatory function.
Summary of the invention
For the technical problem that solves, the objective of the invention is quantitatively to induce human eye to produce and regulate and the accurate simultaneously aberration of measuring under adjustment state, increase the function and the scope of application of aberration measurement instrument, for this reason, the present invention is intended to set up a kind of novel Hartmann's aberration measurement instrument of inducing human eye to regulate and measure in real time dynamic higher order aberratons.
For reaching described purpose, the invention provides and can induce human eye to comprise second spectroscope, the 3rd spectroscope, bore matching system, first illuminator, rotary signal device, beacon beam colimated light system, LD semiconductor laser, goal systems, aperture, Hartmann wave front sensor and housing from the technical scheme of the dynamic aberration measurement instrument of the Hartmann of main regulation, also comprise: first spectroscope, image-forming objective lens, moving target, preceding group of focusing object lens, back are organized the focusing object lens, are induced regulating system, first travel mechanism and second travel mechanism; Wherein:
First spectroscope, image-forming objective lens and preceding group of focusing object lens are positioned at enclosure interior and fixedly connected with housing; First travel mechanism and second travel mechanism are fixed on the housing;
Induce regulating system to be connected with second travel mechanism with first travel mechanism respectively, be used to control moving of first travel mechanism and second travel mechanism;
The optical facilities that contain back group focusing object lens, second spectroscope, the 3rd spectroscope, bore matching system, first reflecting mirror, rotary signal device, beacon beam colimated light system, LD semiconductor laser, goal systems, aperture and Hartmann wave front sensor are fixed in second travel mechanism, group focusing object lens were done linear translation before described optical facilities were relatively carried in second travel mechanism, described linear translation is the linear translation parallel with the optical facilities primary optical axis, regulates the dioptric that produces in order to the compensation eye; Moving target is placed on to be done in first travel mechanism and the vertical linear translation of optical facilities primary optical axis, regulates in order to induce tested human eye to produce dioptric.
Beneficial effect of the present invention: the present invention induces adjusting and control system thereof by introduce moving target on existing aberration measurement instrument platform, constitute and induce regulating system, can quantitatively induce human eye to produce and regulate the visual state of looking nearly thing, and accurately measure the aberration under adjustment state simultaneously with the simulation human eye.Solve existing aberration measurement instrument and can only measure aberration under the human eye distant vision state, can't measure the aberration under the near vision state that the people watches different distance.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structured flowchart of inducing regulating system among Fig. 1;
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, can induce human eye to comprise from the dynamic aberration measurement instrument of the Hartmann of main regulation: first spectroscope 2, image-forming objective lens 3, moving target 4, preceding group of focusing object lens 5, back are organized focusing object lens 6, second spectroscope 7, the 3rd spectroscope 8, bore matching system 9, first illuminator 10, rotary signal device 11, beacon beam colimated light system 12, LD semiconductor laser 13, goal systems 14, aperture 15, Hartmann wave front sensor 16, are induced regulating system 17, first travel mechanism 18, second travel mechanism 19 and housing (not making the housing labelling among the figure); Wherein
First spectroscope 2, image-forming objective lens 3 and preceding group of focusing object lens 5 are positioned at enclosure interior and fixedly connected with housing; First travel mechanism 18 and second travel mechanism 19 are fixed on the housing; The optical facilities that contain back group focusing object lens 6, second spectroscope 7, the 3rd spectroscope 8, bore matching system 9, first reflecting mirror 10, rotary signal device 11, beacon beam colimated light system 12, LD semiconductor laser 13, goal systems 14, aperture 15 and Hartmann wave front sensor 16 are fixed in second travel mechanism 19, group focusing object lens 5 were done linear translation before described optical facilities were relatively carried in second travel mechanism 19, described linear translation is the linear translation parallel with the optical facilities primary optical axis, regulates the dioptric that produces in order to the compensation eye; Moving target 4 is placed on to be done in first travel mechanism 18 and the vertical linear translation of optical facilities primary optical axis, regulates in order to induce eye to produce dioptric; Induce regulating system 17 to be connected with second travel mechanism 19 with first travel mechanism 18 respectively, be used to control moving of first travel mechanism 18 and second travel mechanism 19.
Focusing system is made up of preceding group of focusing object lens 5 and back group focusing object lens 6, wherein before group focusing object lens 5 for maintaining static, the group object lens 6 of focusing in back are relative translation.Optical facilities in described second travel mechanism 18 are known technology, do not repeat them here the structural relation of described optical facilities.
As Fig. 2 the structured flowchart of inducing regulating system among Fig. 1 is shown, inducing regulating system 17 is to utilize computer system to realize.Induce regulating system 17 by inducing control module 17a, inducing adjusting analysis module 17b and refraction compensation module 17c to constitute; Wherein:
Induce the regulated quantity of regulating analysis module 17b human eye generation to be measured as required in order to determine the amount of movement of moving target 4; Induce control module 17a to regulate analysis module 17b and is connected with inducing, the linear translation with the primary optical axis vertical direction of optical facilities is done by first travel mechanism 18 that induces control module 17a to send signal controlling lift-launch moving target 4 according to the amount of movement of moving target 4; Refraction compensation module 17c is connected with inducing adjusting analysis module 17b, and refraction compensation module 17c sends signal controlling according to human eye regulated quantity to be measured and carries second travel mechanism, 19 linear translations of optical facilities are regulated generation with the compensation eye a dioptric.Described regulated quantity is the change amount of refraction of eye, the object of seeing different distance needs different refractive status, the people of normal no antimetropia watches that the object of infinity is zero dioptric, from seeing that the infinity object is to seeing that the related human eye refraction change amount of closer object is regulated quantity, the ophthalmology specialized vocabulary need not specify during use.
Moving target 4 can be made of sighting target and light emitting diode, also can be LED screen or OLED screen.
Work process of the present invention is: measure when not having the aberration of regulating human eye (this moment, the people watched the infinity), by inducing regulating system 17 to close moving target 4 and opening goal systems 14.The measured eye 1 to be measured is organized the target of an infinite distant place that occurs in focusing object lens 6, second spectroscope 7, the 3rd spectroscope 8 object observing systems 14 by first spectroscope 2, preceding group of focusing object lens 5, back; The beacon beam that LD semiconductor laser 13 sends, collimate by beacon beam colimated light system 12, expand bundle, after rotary signal device 11 and 10 reflections of first reflecting mirror, behind second spectroscope, 7 reflecting ﹠ transmittings, organize focusing object lens 6 again, enter human eye 1 to be measured behind the preceding group focusing object lens 5 and first spectroscope 2, the beacon beam of human eye 1 optical fundus scattering to be measured sees through first spectroscope 2, after focusing object lens 6 are organized in preceding group focusing object lens 5 and back, see through second spectroscope 7 again, through 8 reflections of the 3rd spectroscope, enter bore matching system 9 and outgoing beacon beam and enter Hartmann wave front sensor 16, Hartmann wave front sensor 16 converts beacon beam to video signal, and regulating system 17 is induced in the video signal input that photodetector captures in the Hartmann wave front sensor 16; Adjust the relative position of wavefront aberrometer exit pupil position and human eye to be measured 1 according to video signal, make video signal be centered close to optical axis center, realize the primary optical axis centrally aligned of video signal center and optical facilities, induce regulating system 17 to gather the video signal of input, and calculate the human eye aberration that does not have when regulating.
When measurement induces the mediator at the moment, by inducing regulating system 17 to close goal systems 14 and opening moving target 4.Induce inducing of regulating system 17 to regulate the amount of movement that analysis module 17b dioptric regulated quantity is as required determined moving target 4, induce control module 17a to send control signal and drive first travel mechanism 18 moves to setting with control moving target 4 the position of inducing.When producing corresponding dioptric by first spectroscope 2 and image-forming objective lens 3 observation moving targets 4, regulates human eye 1 to be measured; The beacon beam that LD semiconductor laser 13 sends, collimate, expand bundle by beacon beam colimated light system 12, after rotary signal device 11,10 reflections of first reflecting mirror, again through 9 reflections of second spectroscope, see through back group focusing object lens 6, preceding group of focus object lens 5, first spectroscope 2, enter human eye 1 to be measured.Refraction compensation module 17c sends signal and drives second travel mechanism 19 and move to correct position with the control optical facilities, and the dioptric that produces when regulating in order to the compensation human eye guarantees that the beacon beam that enters human eye 1 to be measured focuses on the optical fundus.The beacon beam of human eye 1 optical fundus scattering to be measured sees through first spectroscope 2, focusing object lens 6 are organized in preceding group of focusing object lens 5, back, see through second spectroscope 7 again, through 8 reflections of the 3rd spectroscope, enter bore matching system 9, regulating system 17 is induced in the video signal input that photodetector captures in the Hartmann wave front sensor 16; Adjust the exit pupil position of wavefront aberrometer and the relative position of human eye according to video signal, make video signal be centered close to the optical axis center of optical facilities, induce regulating system 17 to gather the video signal of input, and calculate the human eye aberration under this adjustment state.It is that lens surface curvature changes and regulates refractive status that described human eye is regulated, to see nearly thing freely clearly.Usually in document, only say the human eye adjusting.
The control module 17a that induces that induces regulating system 17 among the present invention sends linear the moving to induce the human eye generation to regulate of motor that control signal drives the lift-launch sighting target; Induce adjustment module 17b analysis to need the regulated quantity of generation to determine the amount of movement of sighting target.Refraction compensation module 17c regulates the dioptric that produces according to eye regulated quantity control focusing system compensation eye.When human eye has produced corresponding dioptric and has regulated by observing moving target 4, the very big out of focus of opthalmic optics's system's existence to be measured, must compensate this big out of focus, Hartmann's measuring system 16 can be measured aberration, so dioptric that produces when inducing the optical facilities linear translation of carrying in regulating system 17 controls second travel mechanism 19 to regulate with the compensation human eye, Hartmann sensor carries out the measurement of aberration simultaneously, the dynamic aberration information in the time of can obtaining the human eye adjusting.
Below for inducing the mathematic(al) representation of regulating system 17:
(1) induce the mathematic(al) representation of regulating degree:
A＝1000/L (1)
Wherein A is for inducing regulating degree, and L is the distance of the eye-observation moving target virtual image of arriving to the tested eye corneal vertex, and moving range is to 70mm at the moment from the infinity.
(2) the amount of movement mathematic(al) representation of moving target 4:
Wherein B is the amount of movement of moving target 4, and L is the distances of eye-observation moving target 4 virtual images of arriving to the tested eye corneal vertex, moving range be from the infinity to 70mm at the moment, F is the focal length of image-forming objective lens 3.
The above; only be the specific embodiment among the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the present invention; can understand conversion or the replacement expected; all should be encompassed in of the present invention comprising within the scope, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (7)
1. can induce human eye from the dynamic aberration measurement instrument of the Hartmann of main regulation, comprise second spectroscope, the 3rd spectroscope, bore matching system, first illuminator, rotary signal device, beacon beam colimated light system, LD semiconductor laser, goal systems, aperture, Hartmann wave front sensor and housing, it is characterized in that also comprising: first spectroscope, image-forming objective lens, moving target, preceding group of focusing object lens, back are organized the focusing object lens, are induced regulating system, first travel mechanism and second travel mechanism; Wherein:
First spectroscope, image-forming objective lens and preceding group of focusing object lens are positioned at enclosure interior and fixedly connected with housing; First travel mechanism and second travel mechanism are fixed on the housing;
Induce regulating system to be connected with second travel mechanism with first travel mechanism respectively, be used to control moving of first travel mechanism and second travel mechanism;
The optical facilities that contain back group focusing object lens, second spectroscope, the 3rd spectroscope, bore matching system, first reflecting mirror, rotary signal device, beacon beam colimated light system, LD semiconductor laser, goal systems, aperture and Hartmann wave front sensor are fixed in second travel mechanism, group focusing object lens were done linear translation before described optical facilities were relatively carried in second travel mechanism, described linear translation is the linear translation parallel with the optical facilities primary optical axis, regulates the dioptric that produces in order to the compensation eye; Moving target is placed on to be done in first travel mechanism and the vertical linear translation of optical facilities primary optical axis, regulates in order to induce tested human eye to produce dioptric.
2. can induce human eye according to claim 1 from the dynamic aberration measurement instrument of the Hartmann of main regulation, it is characterized in that, forms focusing system by preceding group of focusing object lens and back group focusing object lens, wherein before group focusing object lens for maintaining static, it is relative translation that the object lens of focusing are organized in the back.
3. can induce human eye according to claim 1 from the dynamic aberration measurement instrument of the Hartmann of main regulation, it is characterized in that, first travel mechanism or second travel mechanism can be that motor moves on line slideway, or the linearity of motor driven gear tooth bar moves.
4. can induce human eye from the dynamic aberration measurement instrument of the Hartmann of main regulation according to claim 1, it is characterized in that moving target is made up of sighting target and light emitting diode, also can be LED screen or OLED screen.
5. can induce human eye from the dynamic aberration measurement instrument of the Hartmann of main regulation according to claim 1, it is characterized in that: the described regulating system of inducing is by inducing control module, inducing adjusting analysis module and refraction compensation module to constitute; Wherein:
Induce and regulate analysis module human eye generation to be measured as required dioptric regulated quantity in order to determine the amount of movement of moving target; Induce control module to regulate analysis module and is connected with inducing, the linear translation with the primary optical axis vertical direction of optical facilities is done by first travel mechanism that induces control module to send signal controlling lift-launch moving target according to the amount of movement of moving target; The refraction compensation module is connected with inducing the adjusting analysis module, and the refraction compensation module is sent signal controlling according to the dioptric regulated quantity of human eye to be measured and carried second travel mechanism's linear translation of optical facilities is regulated generation with the compensation eye a dioptric.
6. as described in claim 5, can induce human eye, it is characterized in that: induce the expression formula of inducing regulating degree of regulating system to be from the dynamic aberration measurement instrument of the Hartmann of main regulation:
A＝1000/L
Wherein A is for inducing regulating degree, and L is the distance of the eye-observation moving target virtual image of arriving to the tested eye corneal vertex, and moving range is to 70mm at the moment from the infinity.
7. can induce human eye from the dynamic aberration measurement instrument of the Hartmann of main regulation according to claim 1, it is characterized in that: the amount of movement expression formula of moving target is:
Wherein B is the amount of movement of moving target, and L is the distance of the eye-observation moving target virtual image of arriving to the tested eye corneal vertex, moving range be from the infinity to 70mm at the moment, F is the focal length of image-forming objective lens.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108371539A (en) * | 2018-02-06 | 2018-08-07 | 腾阅健康科技（深圳）有限公司 | A kind of eyes adjust force checking device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371539A (en) * | 2018-02-06 | 2018-08-07 | 腾阅健康科技（深圳）有限公司 | A kind of eyes adjust force checking device and method |
| CN108371539B (en) * | 2018-02-06 | 2024-01-09 | 深圳视力棒医疗科技有限公司 | Eye adjusting force detection device and method |
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Application publication date: 20111221 |