CN202027561U - Human eye aberration measuring system based on phase diversity - Google Patents

Human eye aberration measuring system based on phase diversity Download PDF

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CN202027561U
CN202027561U CN 201020650764 CN201020650764U CN202027561U CN 202027561 U CN202027561 U CN 202027561U CN 201020650764 CN201020650764 CN 201020650764 CN 201020650764 U CN201020650764 U CN 201020650764U CN 202027561 U CN202027561 U CN 202027561U
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lens
optical system
human eye
pupil
light
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宣丽
李大禹
孔宁宁
李抄
夏明亮
齐岳
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Suzhou Institute of Biomedical Engineering and Technology of CAS
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Suzhou Institute of Biomedical Engineering and Technology of CAS
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Abstract

The utility model discloses a human eye aberration measuring system based on phase diversity, which comprises a lighting optical system, a pupil aligning system, a gazing optical system and an imaging optical system. The lighting optical system is an optical system that is mainly applied for lighting eyeground of a human eye through infrared light during a detecting process. The pupil aligning system is a system for aligning the human eye with the optical axes of the lighting optical system and the imaging optical system before the detecting process. The gazing optical system is an optical system mainly used for fixing a human eyeball during the detecting process. The imaging optical system is a system mainly used for performing observation and imaging on the eyeground area lit by the lighting optical system. The human eye aberration measuring system in the utility model overcomes the defects shown in the prior art and characterized by subject aberration measurement, long measuring time, individualized aberration correction disability, low measuring accuracy and small measuring range, etc.

Description

A kind of based on the mutually irregular human eye aberration measuring system in position
Technical field
This utility model belongs to a kind of mesurement technique of aberrations of human eye, relates to a kind of based on the mutually irregular human eye aberration measuring system in position particularly.
Background technology
In recent years, along with the development of modern technologies, the theoretical constantly development of wave front aberration can not have been satisfied the evaluation to opthalmic optics's quality to the evaluation of human eye refractive status such as out of focus, astigmatism.Wave front aberration becomes a kind of important means that may change the effective way of human eye vision quality and estimate image quality by a simple optical concept.
The wave front aberration of measurement human eye is also proofreaied and correct, and to improving visual quality significant effect is arranged.Predictable aberration factor is incorporated individuation design, will be the ideal state that the individuation aberration correction of wave front aberration guiding is pursued.For this reason, measuring and carry out a large amount of contrasts of wave front aberration front and back exactly, will be the only way which must be passed that leads to this ideal state.
At present, the method for measurement human eye aberration mainly contains hartmann method, Tcherning method and Scheiner method.The Scheiner method is the subjectivity aberration measurement, and Measuring Time is long, can not be used to guide the individuation aberration correction; Tcherning method limitation will be used a Utopian human-eye model (Gullstrand schematic eye) in being that the position deviation of light beam calculates, and measurement accuracy is low; The Measuring Time of Hartmann method is short, measurement result accurately and reliably, but measuring range is little, can't accurately measure the wave front aberration of big defocusing amount.
The method of position coherent difference measurements wave front aberration is to utilize camera image information captured (light distribution) to extrapolate a kind of wavefront sensing technology of optical system corrugated aberration.
According to Fourier optics theory, concern just like down conversion between the point spread function PSF of optical system and the optical transfer function OTF:
OTF(u,v)=∫∫PSF(x,y)·exp[-2πi(ux+vy)]dxdy (1)
The amplitude points spread function be ASF (x, y), point spread function be it mould square, concern as follows:
PSF(x,y)=ASF(x,y)ASF *(x,y)=|ASF(x,y)| 2 (2)
And amplitude points spread function ASF (x, y) and have following Fourier transformation relation between the pupil function P (x ', y '):
P(x′,y′)=∫∫ASF(x,y)·exp[-2πi(x′x+y′y)]dxdy?(3)
By above three formulas as can be known, optical transfer function is the self correlation of pupil function, concerns as follows:
OTF ( u , v ) = ∫ ∫ P ( x ′ , y ′ ) P * ( x ′ + u , y ′ + v ) d x ′ dy ′ = P ( x ′ , y ′ ) ⊗ P ( x ′ , y ′ )
(4)
Pupil function can be expressed as
P(x′,y′)=A(x′,y′)exp[ikW(x′,y′)] (5)
Wherein, the amplitude part of A (x ', y ') expression pupil function is the function of pupil bore, is 1 in the light hole, and light hole is outward 0, and k=2 π/λ is a wave number; The position phase part of W (x ', y ') expression pupil function is the wave aberration of system.
The problem that recover mutually the position is exactly that (x y) and pupil function amplitude part A (x ', y '), obtains the position phase part W (x ', y ') of pupil function to known point spread function PSF.
Can use iterative method to try to achieve system's wave aberration for a some thing.The light distribution that camera detects can regard that (x, y), the Fourier transformation of point spread function is a system transter for the point spread function PSF of system that point source passes through as.With the wave front aberration expansion in series, general using Zernike polynomial expansion.Utilize the self correlation calculation of transfer function of pupil function then, change the Zernike coefficient, obtain the result of calculation of different transfer functions, and the ssystem transfer function that obtains with Fourier transformation by point spread function relatively, and the wave front aberration that its mean square deviation hour obtains is the wave front aberration of system.
Detection for human eyes wave-front optical aberration is not satisfy the condition of point-sourcre imaging in the ordinary course of things, and especially the luminous point that reflects from human eye under the bigger situation of human eye aberration is dispersed very big area.The point spread function that utilizes camera to obtain merely can be inaccurate.Be equivalent to the Extended Object imaging this moment, adopts iterative method above-mentioned can not obtain accurate human eyes wave-front optical aberration merely.We adopt the mutually irregular method in position that iterative method above-mentioned is improved.
The position is mutually irregular to be to one or several known phase difference of optical system, and as the image planes out of focus, if this moment, known defocusing amount just can be known the phase difference of system, the image planes of system and out of focus face just have a phase difference like this, and this just is called mutually irregular.If the phase difference between taking into account system image planes and irregular 's image and known irregular and the image planes simultaneously just can calculate the position phase of optical system, and is especially more effective for this method of expanding of object.
The imaging relations of optical system can be expressed as
i(x,y)=h(x,y)*d(x,y)*o(x,y)+n(x,y) (6)
Wherein (x y) is light distribution on the image planes to i; (x y) is the point spread function of optical system to h, and (x y) is the point spread function of detector to d; (x y) is the light distribution of object to o; (x y) is noise to n.* represent convolution algorithm.
Fourier transformation is got on (6) formula both sides to be got
I(u,v)=H(u,v)D(u,v)O(u,v)+N(u,v) (7)
Wherein (u v) is the frequency spectrum of picture to I; (u v) is an optical transfer function to H; (u v) is the transfer function of detector to D; (u v) is the frequency spectrum of object to O; (u v) is a noise spectrum to N.
Utilize the next parametric method of recovering mutually of point source situation, can write a Chinese character in simplified form pupil function become
P(x′,y′)=A(x′,y′)exp[ikW(x′,y′)] (8)
Wherein, and wave aberration W (x ', y ') can be launched into multinomial
W ( x ′ , y ′ ) = Σ k = 1 N c k φ k ( x ′ ) - - - ( 9 )
Optical transfer function H (u v) is the self correlation of pupil function,
H(u,v)=∫∫P(x′,y′)P *(x′+u,y′+v)dx′dy′=∫∫A(x′,y′)(x′+u,y′+v)exp[ikW(x′+u,y′+v)-ikW(x′,y′)]dx′dy′(10)
By given multinomial coefficient c kThe spectrum H of calculate (u, v) D (u, v) O (u, v) and the frequency spectrum I of the picture that detects (u, v) the variance minimum between is obtained multinomial coefficient c kThereby, the wave aberration of definite system.Evaluation of estimate between the frequency spectrum of calculating frequency spectrum and detecting is
E=∫∫|I(u,v)-H(u,v)D(u,v)O(u,v)| 2dudv (11)
As the c of E for hour obtaining kDetermined multinomial is the wave aberration of system just.
Under the situation of not knowing the object plane light distribution, use the mutually irregular method in position can effectively determine the value of E, thereby determine c kBe located at two positions and observe object, obtain two picture i 1(x, y) and i 2(x, y), at this moment evaluation of estimate E is
E=∫∫|I 1(u,v)-H 1(u,v)D(u,v)O(u,v)| 2dudv+∫∫|I 2(u,v)-H 2(u,v)D(u,v)O(u,v)| 2dudv?(12)
(u v) is the frequency spectrum O of object at this moment
D ( u , v ) O ( u , v ) = H 1 * I 1 + H 2 * I 2 | H 1 | 2 + | H 2 | 2 - - - ( 13 )
The time evaluation of estimate E be minimum.
With (13) formula substitution (12) formula, obtain
E = ∫ ∫ | I 1 H 2 - I 2 H 1 | 2 | H 1 | 2 + | H 2 | 2 dudv - - - ( 14 )
By the frequency spectrum of two width of cloth images and the mutually irregular wave aberration that just can calculate system in position between them.
The utility model content
For overcoming deficiency of the prior art, it is a kind of based on the mutually irregular human eye aberration measuring system in position that the purpose of this utility model is to provide.
In order to solve the problems of the technologies described above, this utility model is achieved through the following technical solutions:
A kind of based on the mutually irregular human eye aberration measuring system in position, comprise lamp optical system, pupil alignment system, stare optical system and imaging optical system.
Further, described lamp optical system is included in first lens, annular diaphragm, second lens and the 3rd lens that set gradually in the light path, also comprises one by computer-controlled light source and optical fiber; Light source enters system by optical fiber with optical coupling, successively through being imaged on place, human eye optical fundus behind first lens, second lens, the 3rd lens and the pupil.
Further, described pupil alignment system comprises the first infrared illumination lamp and the second infrared illumination lamp, first light splitting piece, the 4th lens and the pupil camera that pupil is carried out infrared radiation, and the 3rd lens that are used for lamp optical system, first light splitting piece is arranged on the back of the 3rd lens, the 4th lens are arranged on the reflected light path of first light splitting piece, and the pupil camera is arranged on the back of the 4th lens; The illumination light of the first infrared illumination lamp and the second infrared illumination lamp by after the pupillary reflex successively through the 3rd lens, first light splitting piece and the 4th lens imaging on the pupil camera.
Further, the described optical system of staring comprises second light splitting piece, the 5th lens and sighting target, and the 3rd lens and second lens that are used for lamp optical system, second light splitting piece is arranged on the back of second lens, on the reflected light path of the 5th lens second light splitting piece, sighting target is arranged on the back of the 5th lens; Human eye is stared sighting target pattern on the sighting target by the 3rd lens, second lens, second light splitting piece and the 5th lens successively.
Further, described imaging optical system comprises and is arranged on the 3rd light splitting piece that the light path light beam with human eye fundus reflex light deflection certain angle and described lamp optical system behind the pupil separates, also be included in the 6th lens, the 7th lens, the 8th lens and camera imaging system on the reflected light path that is successively set on the 3rd light splitting piece, described lamp optical system is incident upon the hot spot on human eye optical fundus successively through the 6th lens, the 7th lens, the 8th lens, is imaged in the camera imaging system.
Further, described second lens and the 3rd lens are formed a telescopic system, and described annular diaphragm is imaged on pupil front surface place.
Further, the position of described pupil camera and pupil face conjugation.
Preferably, described camera imaging system comprises that one is arranged on the Amici prism behind the 8th lens, and being separately positioned on the first imaging camera and the second imaging camera on the two outgoing light paths of Amici prism, the described first imaging camera and the second imaging camera are connected on the described computer.
Further, the described first imaging camera is positioned at optical fundus image planes conjugation, and the described second imaging camera is in respect to the optical fundus image planes to be had on the position of side-play amount of a numerical value.
Preferably, described camera imaging system comprises that one is arranged on the 4th light splitting piece behind the 8th lens, and the reflecting mirror that is provided with on the reflected light path of the 4th light splitting piece, comprise that also one is arranged on, the first imaging camera on the light path that can enter for the folded light beam of the projecting beam of the 4th light splitting piece and reflecting mirror, the described first imaging camera is connected on the described computer.
Further, the folded light beam of the projecting beam of described the 4th light splitting piece and reflecting mirror keeps the phase difference of a constant numerical value.
Compared with prior art overcome in the prior art with this utility model, the Scheiner method, the subjectivity aberration measurement, Measuring Time is long, can not be used to guide the individuation aberration correction; Tcherning method, limitation will be used a Utopian human-eye model (Gullstrand schematic eye) in being that the position deviation of light beam calculates, and measurement accuracy is low; The Measuring Time of Hartmann method is short, measurement result accurately and reliably, but measuring range is little, can't accurately measure the deficiency of the wave front aberration of big defocusing amount.
Description of drawings
Fig. 1 is the system construction drawing of the embodiment based on the mutually irregular human eye aberration measuring system in position of the present utility model.
Fig. 2 is the system construction drawing of another embodiment based on the mutually irregular human eye aberration measuring system in position of the present utility model.
The specific embodiment
Embodiment 1:
Referring to shown in Figure 1, a kind of based on the mutually irregular human eye aberration measuring system in position, comprise lamp optical system, the pupil alignment system, stare optical system and imaging optical system, described lamp optical system mainly is the optical system of with infrared light being thrown light in the human eye optical fundus when surveying, described pupil alignment system is to be used for before surveying the unify system of optical axis alignment of imaging optical system of human eye and illumination optical system, stare optical system and mainly be and be used for when surveying the fixedly optical system of the position of human eye eyeball, imaging optical system mainly is a system of the zone, optical fundus that illuminator is thrown light on being observed imaging.
Further, described lamp optical system is included in first lens 3, annular diaphragm 4, second lens 5 and the 3rd lens 6 that set gradually in the light path, also comprises a light source 1 and an optical fiber 2 by computer 23 controls; Light source 1 enters system by optical fiber 2 with optical coupling, successively through being imaged on place, human eye optical fundus behind first lens 3, second lens 5, the 3rd lens 6 and the pupil, described second lens 5 and the 3rd lens 6 are formed a telescopic system, and described annular diaphragm 4 is imaged on pupil front surface place.
Further, described pupil alignment system comprises the first infrared illumination lamp 81 and the second infrared illumination lamp 82, first light splitting piece 15, the 4th lens 16 and the pupil camera 17 that pupil is carried out infrared radiation, and the 3rd lens 6 that are used for lamp optical system, first light splitting piece 15 is arranged on the back of the 3rd lens 6, the 4th lens 16 are arranged on the reflected light path of first light splitting piece 15, pupil camera 17 is arranged on the back of the 4th lens 16, and its position and pupil face conjugation; The illumination light of the first infrared illumination lamp 81 and the second infrared illumination lamp 82 is imaged on the pupil camera 17 through the 3rd lens 6, first light splitting piece 15 and the 4th lens 16 successively by after the pupillary reflex.
Further, the described optical system of staring comprises second light splitting piece 18, the 5th lens 19 and sighting target 20, and the 3rd lens 6 and second lens 5 that are used for lamp optical system, second light splitting piece 18 is arranged on the back of second lens 5, on the reflected light path of the 5th lens 19 second light splitting pieces 18, sighting target 20 is arranged on the back of the 5th lens 19; Human eye is stared sighting target pattern on the sighting target 20 by the 3rd lens 6, second lens 5, second light splitting piece 18 and the 5th lens 19 successively.
Further, described imaging optical system comprises and is arranged on the 3rd light splitting piece 7 that the light path light beam with human eye fundus reflex light deflection certain angle and described lamp optical system behind the pupil separates, and also is included in the 6th lens 9, the 7th lens 10, the 8th lens 11 and camera imaging system on the reflected light path that is successively set on the 3rd light splitting piece 7.
Further, described camera imaging system comprises that one is arranged on the Amici prism 12 behind the 8th lens 11, and be separately positioned on the first imaging camera 13 and the second imaging camera 14 on the two outgoing light paths of Amici prism 12, the described first imaging camera 13 and the second imaging camera 14 are connected on the described computer 23, the described first imaging camera is positioned at optical fundus image planes conjugation, the described second imaging camera 14 is in respect to the optical fundus image planes to be had on the position of side-play amount of a numerical value, described lamp optical system is incident upon the hot spot on human eye optical fundus successively through the 6th lens 9, the 7th lens 10, the 8th lens 11 are imaged on the first imaging camera 13 and the second imaging camera 14.
The work process of present embodiment is as follows:
At first the first infrared bright lamp 81 and the second infrared illumination lamp 82 are opened, illuminate pupil, and make the unify optical axis coincidence of imaging optical system of human eye axis oculi and illumination optical system by the position of adjusting instrument, trigger light source 1 and the first imaging camera 13 and the second imaging camera 14 of surveying light path after adjusting the instrument position, make light source 1 send the optical illumination optical fundus and the first imaging camera 13 and the second imaging camera 14 and begin to survey the catoptrical image of human eye.In light source 1 illumination optical fundus, the first infrared bright lamp 81 and the second infrared illumination lamp 82 are closed.The first imaging camera 13 and the second imaging camera 14 collect after the human eye fundus reflex light, and according to computing formula
E = ∫ ∫ | I 1 H 2 - I 2 H 1 | 2 | H 1 | 2 + | H 2 | 2 dudv - - - ( 14 )
Calculate the wave aberration of human eye, in the formula: E represents the wave aberration of human eye, I 1The frequency spectrum of representing the picture that the first imaging camera 13 collects, I 2The frequency spectrum of representing the picture that the second imaging camera 14 collects, H 1Represent the optical transfer function that the first imaging camera 13 is relevant, H 2Represent the optical transfer function that the second imaging camera 14 is relevant.
Embodiment 2:
Referring to shown in Figure 2, a kind of based on the mutually irregular human eye aberration measuring system in position, comprise lamp optical system, the pupil alignment system, stare optical system and imaging optical system, described lamp optical system mainly is the optical system of with infrared light being thrown light in the human eye optical fundus when surveying, described pupil alignment system is to be used for before surveying the unify system of optical axis alignment of imaging optical system of human eye and illumination optical system, stare optical system and mainly be and be used for when surveying the fixedly optical system of the position of human eye eyeball, imaging optical system mainly is a system of the zone, optical fundus that illuminator is thrown light on being observed imaging.
Further, described lamp optical system is included in first lens 3, annular diaphragm 4, second lens 5 and the 3rd lens 6 that set gradually in the light path, also comprises a light source 1 and an optical fiber 2 by computer 24 controls; Light source 1 enters system by optical fiber 2 with optical coupling, successively through being imaged on place, human eye optical fundus behind first lens 3, second lens 5, the 3rd lens 6 and the pupil, described second lens 5 and the 3rd lens 6 are formed a telescopic system, and described annular diaphragm 4 is imaged on pupil front surface place.
Further, described pupil alignment system comprises the first infrared illumination lamp 81 and the second infrared illumination lamp 82, first light splitting piece 15, the 4th lens 16 and the pupil camera 17 that pupil is carried out infrared radiation, and the 3rd lens 6 that are used for lamp optical system, first light splitting piece 15 is arranged on the back of the 3rd lens 6, the 4th lens 16 are arranged on the reflected light path of first light splitting piece 15, pupil camera 17 is arranged on the back of the 4th lens 16, and its position and pupil face conjugation; The illumination light of the first infrared illumination lamp 81 and the second infrared illumination lamp 82 is imaged on the pupil camera 17 through the 3rd lens 6, first light splitting piece 15 and the 4th lens 16 successively by after the pupillary reflex.
Further, the described optical system of staring comprises second light splitting piece 18, the 5th lens 19 and sighting target 20, and the 3rd lens 6 and second lens 5 that are used for lamp optical system, second light splitting piece 18 is arranged on the back of second lens 5, on the reflected light path of the 5th lens 19 second light splitting pieces 18, sighting target 20 is arranged on the back of the 5th lens 19; Human eye is stared sighting target pattern on the sighting target 20 by the 3rd lens 6, second lens 5, second light splitting piece 18 and the 5th lens 19 successively.
Further, described imaging optical system comprises and is arranged on the 3rd light splitting piece 7 that the light path light beam with human eye fundus reflex light deflection certain angle and described lamp optical system behind the pupil separates, and also is included in the 6th lens 9, the 7th lens 10, the 8th lens 11 and camera imaging system on the reflected light path that is successively set on the 3rd light splitting piece 7.
Further, described camera imaging system comprises that one is arranged on the 4th light splitting piece 21 behind the 8th lens 11, and the reflecting mirror 22 that is provided with on the reflected light path of the 4th light splitting piece 21, comprise that also one is arranged on, the first imaging camera 13 on the light path that can enter for the folded light beam of the projecting beam of the 4th light splitting piece 21 and reflecting mirror 22, the described first imaging camera 13 is connected on the described computer 23, and the folded light beam of the projecting beam of described the 4th light splitting piece 21 and reflecting mirror 22 keeps the phase difference of a constant numerical value.
The work process of present embodiment and embodiment 1 is basic identical, and the difference part is as follows:
The first imaging camera 13 is positioned at image planes place, optical fundus, by the light of optical fundus outgoing through after the 4th light splitting piece 21 except one the tunnel directly projection first is imaged on the camera 13, also have one the tunnel to be reflected by the 4th light splitting piece 21 and enter first through the reflection of reflecting mirror 22 and be imaged on camera 13, this two-beam has a constant phase difference.Be imaged on two images that detect on the camera 13 according to first with constant phase difference, and according to computing formula
E = ∫ ∫ | I 1 H 2 - I 2 H 1 | 2 | H 1 | 2 + | H 2 | 2 dudv - - - ( 14 )
Calculate the wave aberration of human eye, in the formula: E represents the wave aberration of human eye, I 1Expression first is imaged on the frequency spectrum of camera 13 by the picture of the light beam generation of the 4th light splitting piece 21 direct projections, I 2Represent the frequency spectrum of the first imaging camera 13, H by the picture of reflecting mirror 22 beam reflected generation 1Expression first is imaged on the relevant optical transfer function of camera 13 by the light beam generation of the 4th light splitting piece 21 direct projections, H 2Represent the relevant optical transfer function that the first imaging camera 13 is produced by reflecting mirror 22 beam reflected.
Above-mentioned example just is to allow the one of ordinary skilled in the art can understand content of the present utility model and enforcement according to this for technical conceive of the present utility model and characteristics being described, its objective is, can not limit protection domain of the present utility model with this.The variation or the modification of every equivalence of having done according to the essence of this utility model content all should be encompassed in the protection domain of the present utility model.

Claims (7)

1. one kind based on the mutually irregular human eye aberration measuring system in position, comprise lamp optical system, pupil alignment system, stare optical system and imaging optical system, it is characterized in that: described lamp optical system is included in first lens (3), annular diaphragm (4), second lens (5) and the 3rd lens (6) that set gradually in the light path, also comprises a light source (1) and an optical fiber (2) by computer (23) control; Light source (1) enters system by optical fiber (2) with optical coupling, successively through being imaged on place, human eye optical fundus behind first lens (3), second lens (5), the 3rd lens (6) and the pupil;
Described pupil alignment system comprises the first infrared illumination lamp (81) and the second infrared illumination lamp (82), first light splitting piece (15), the 4th lens (16) and pupil camera (17) that pupil (24) is carried out infrared radiation, and the 3rd lens (6) that are used for lamp optical system, first light splitting piece (15) is arranged on the back of the 3rd lens (6), the 4th lens (16) are arranged on the reflected light path of first light splitting piece (15), and pupil camera (17) is arranged on the back of the 4th lens (16); The illumination light of the first infrared illumination lamp (81) and the second infrared illumination lamp (82) is imaged on the pupil camera (17) through the 3rd lens (6), first light splitting piece (15) and the 4th lens (16) after pupil (24) reflection successively;
The described optical system of staring comprises second light splitting piece (18), the 5th lens (19) and sighting target (20), and the 3rd lens (6) and second lens (5) that are used for lamp optical system, second light splitting piece (18) is arranged on the back of second lens (5), on the reflected light path of the 5th lens (19) second light splitting pieces (18), sighting target (20) is arranged on the back of the 5th lens (19); Human eye is stared sighting target pattern on the sighting target (20) by the 3rd lens (6), second lens (5), second light splitting piece (18) and the 5th lens (19) successively;
Described imaging optical system comprises and is arranged on the 3rd light splitting piece (7) that the light path light beam with human eye fundus reflex light deflection certain angle and described lamp optical system behind the pupil (24) separates, also be included in the 6th lens (9), the 7th lens (10), the 8th lens (11) and camera imaging system on the reflected light path that is successively set on the 3rd light splitting piece (7), described lamp optical system is incident upon the hot spot on human eye optical fundus successively through the 6th lens (9), the 7th lens (10), the 8th lens (11), is imaged in the camera imaging system.
2. according to claim 1 based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: described second lens (5) and the 3rd lens (6) are formed a telescopic system, and described annular diaphragm (4) is imaged on pupil (24) front surface place.
3. according to claim 1 based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: the position of described pupil camera (17) and pupil (24) face conjugation.
4. according to claim 1 or 2 or 3 described based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: described camera imaging system comprises that one is arranged on the Amici prism (12) behind the 8th lens (11), and being separately positioned on the first imaging camera (13) and the second imaging camera (14) on the two outgoing light paths of Amici prism (12), the described first imaging camera (13) and the second imaging camera (14) are connected on the described computer (23).
5. according to claim 4 based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: the described first imaging camera (13) is positioned at optical fundus image planes conjugation, and the described second imaging camera (14) is in respect to the optical fundus image planes to be had on the position of side-play amount of a numerical value.
6. according to claim 1 or 2 or 3 described based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: described camera imaging system comprises that one is arranged on the 4th light splitting piece (15) behind the 8th lens (11), and the reflecting mirror (22) that is provided with on the reflected light path of the 4th light splitting piece (21), comprise that also one is arranged on, the first imaging camera (13) on the light path that can enter for the folded light beam of the projecting beam of the 4th light splitting piece (21) and reflecting mirror (22), described imaging camera (13) is connected on the described computer (23).
7. according to claim 6 based on the mutually irregular human eye aberration measuring system in position, it is characterized in that: the folded light beam of the projecting beam of described the 4th light splitting piece (21) and reflecting mirror (22) keeps the phase difference of a constant numerical value.
CN 201020650764 2010-12-09 2010-12-09 Human eye aberration measuring system based on phase diversity Expired - Fee Related CN202027561U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102551657A (en) * 2010-12-09 2012-07-11 苏州生物医学工程技术研究所 Human eye aberration measuring system based on phase diversity
CN102636271A (en) * 2012-04-19 2012-08-15 中国科学院光电技术研究所 Phase diversity wave front measurement imaging device based on difference optics
CN112472022A (en) * 2020-12-10 2021-03-12 上海雄博精密仪器股份有限公司 Optical structure of hand-held fundus camera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102551657A (en) * 2010-12-09 2012-07-11 苏州生物医学工程技术研究所 Human eye aberration measuring system based on phase diversity
CN102636271A (en) * 2012-04-19 2012-08-15 中国科学院光电技术研究所 Phase diversity wave front measurement imaging device based on difference optics
CN102636271B (en) * 2012-04-19 2013-12-11 中国科学院光电技术研究所 Phase diversity wave front measurement imaging device based on difference optics
CN112472022A (en) * 2020-12-10 2021-03-12 上海雄博精密仪器股份有限公司 Optical structure of hand-held fundus camera

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