CN115153421A - Integral type optometry optical path system and optometry equipment - Google Patents
Integral type optometry optical path system and optometry equipment Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 238000003384 imaging method Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000004438 eyesight Effects 0.000 claims abstract description 16
- 208000001491 myopia Diseases 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 206010020675 Hypermetropia Diseases 0.000 description 5
- 230000004305 hyperopia Effects 0.000 description 4
- 201000006318 hyperopia Diseases 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000003128 head Anatomy 0.000 description 3
- 230000004379 myopia Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
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Abstract
The application relates to an integral type optometry optical path system and optometry equipment, the system includes: a corrective lens adjustment module; an image generator for generating a far-view image; a far-vision imaging module for imaging the image in the image generator to far vision, and the light path of the far-vision imaging module intersects with the light path of the corrective lens adjustment module; the switching reflector is positioned at the intersection of the light path of the correcting lens adjusting module and the light path of the far-vision imaging module; and the driving mechanism is used for driving the switching reflector to rotate, and when the switching reflector rotates, the driving mechanism is used for selecting a near-sight image or a far-sight image to the correcting lens adjusting module. This application has the less effect of volume that optometry equipment occupy. And can be applied to places with smaller space environment.
Description
Technical Field
The application relates to the field of vision detection devices, in particular to an integrated optometry optical path system and optometry equipment.
Background
In conventional vision measurement procedures, it is often necessary to measure the prescription data for both distance and near vision. Generally, hyperopia requires that a person see an image at a distance of five meters.
Common optometry equipment integrates the function of myopia measurement, blocks the light path of the optometry head through a turnover plate which is arranged in a turnover mode, and performs myopia optometry in a mode of displaying a myopia image on the turnover plate. When the hyperopia optometry is needed, the turning plate is turned down, and a hyperopia image is placed at a position which is about five meters away from the optometry equipment to realize the hyperopia optometry.
The defect of adopting the equipment to carry out optometry is also very obvious, because the switching of far and near optometry is completely realized by the overturning of the turning plate, and the distance between a far vision image and an optometry head for calibrating is required to be ensured in the process of far vision optometry. Therefore, the optometry equipment needs a large space occupancy rate and is not suitable for places with small space.
Disclosure of Invention
In order to reduce the volume that optometry equipment occupy, this application provides an integral type optometry optical path system and optometry equipment.
In a first aspect, the application provides an integrated optometry optical path system which adopts the following technical scheme:
an integrated optometry optical path system comprising:
a corrective lens adjustment module;
an image generator for generating a far-view image;
a far-vision imaging module for imaging the image in the image generator to far vision, and the light path of the far-vision imaging module intersects with the light path of the corrective lens adjustment module;
the switching reflector is positioned at the intersection of the light path of the correcting lens adjusting module and the light path of the far-vision imaging module;
and the driving mechanism is used for driving the switching reflector to rotate, and when the switching reflector rotates, the driving mechanism is used for selecting a near-sight image or a far-sight image to the correction lens adjusting module.
By adopting the technical scheme, the far-vision image is generated through the image generator by the arrangement, the image generated through the image generator is amplified through the far-vision imaging module, a virtual image at a certain distance from a detected person is formed by reflection of the switching reflector, and when the near-vision image is switched to as required, the near-vision image at a close distance can be directly seen by the detected person through rotating the switching reflector. Compared with the traditional optometry equipment, the space occupied by the optometry mode is small, images at a far distance can be generated under the condition that the space is small through the optical imaging principle, and switching of far and near images can be achieved rapidly and conveniently through switching of the switching reflectors, so that convenience is achieved.
Preferably, the corrective lens adjustment module is aligned with a near vision image, and the switching mirror reflects the far vision image to the image generator when the near vision image is imaged to the corrective lens adjustment module.
By adopting the technical scheme, the interference caused by the far-vision image when the near-vision image is viewed can be reduced. Meanwhile, the space occupancy rate can be further optimized in the mode, the structure is simpler, and a detected person can directly view far-vision images in front of the detected person through the correcting lens module.
Preferably, the image generator and the far-vision imaging module are both located on the same side of the optical path of the corrective lens adjustment module, and the optical path of the far-vision imaging module is perpendicular to the optical path of the corrective lens adjustment module.
Preferably, the telescopic imaging module further comprises a first reflecting mirror for receiving the emission of the telescopic imaging module and a second reflecting mirror for receiving the reflected light of the first reflecting mirror, the telescopic imaging module is projected to the switching reflecting mirror through the first reflecting mirror and the second reflecting mirror, and the light path from the first reflecting mirror to the second reflecting mirror is horizontally arranged.
By adopting the technical scheme, the setting mode can adapt to different interpupillary distances by adjusting the distance between the first reflecting mirror and the second reflecting mirror, and the mode can also change the imaging distance under the action of the two reflecting mirrors. Meanwhile, compared with the scheme without the first reflecting mirror and the second reflecting mirror, the imaging distance is smaller in occupied space and higher in space utilization rate.
Preferably, a diopter measuring module is further included, and the diopter measuring module includes:
the first light splitter is positioned between the correcting lens adjusting module and the switching reflector;
a second light splitter for receiving the reflected light of the first light splitter;
the infrared light source generating unit is used for generating parallel infrared light to the second light splitting sheet and reflecting the parallel infrared light to the first light splitting sheet through the second light splitting sheet;
and the measuring unit is used for receiving the image reflected from the first light splitting sheet and transmitted through the second light splitting sheet to detect diopter.
Through adopting above-mentioned technical scheme, diopter measurement module's setting makes can adopt the mode of objective optometry to obtain the concrete parameter of diopter to combine together to make whole platform equipment have the function of subjective and objective optometry integration with the mode of far and near image optometry, improve optometry equipment's space utilization.
Preferably, the device further comprises a lens-eye distance measuring module, wherein the lens-eye distance measuring module comprises a measuring reflector and a lens-eye distance measuring camera, and the lens-eye distance measuring camera is used for acquiring a lens-eye distance image reflected by the measuring reflector.
By adopting the technical scheme, the arrangement of the module for measuring the distance between the eyes of the user enables the user to use the device.
In a second aspect, the optometry equipment provided by the application adopts the following technical scheme:
an optometry device, which applies the optical path system;
the correcting lens adjusting module is provided with two groups of eyes which respectively correspond to the examined person.
By adopting the technical scheme, the far-vision image is generated through the image generator by the arrangement, the image generated through the image generator is amplified through the far-vision imaging module, a virtual image at a certain distance from a detected person is formed by reflection of the switching reflector, and when the near-vision image is switched to as required, the near-vision image at a close distance can be directly seen by the detected person through rotating the switching reflector. Compared with the traditional optometry equipment, the space occupied by the optometry mode is small, images at a far distance can be generated under the condition of small space through the optical imaging principle, and switching of far and near images can be rapidly and conveniently realized through switching of the switching reflector, so that convenience is realized.
Preferably, the driving mechanism comprises a rotating shaft controlled to rotate, the rotating shaft is provided with a cavity penetrating along the axial direction and an opening positioned at one side of the cavity, the switching reflector is arranged in the opening in a penetrating manner and is connected with a positioning core arranged in the cavity, and the width of the opening is larger than the thickness of the switching reflector;
the two sides of the rotating shaft are respectively provided with a supporting plate for supporting the rotating shaft to rotate, and the supporting plates are provided with a limiting locking mechanism for driving the switching reflector to be fixed in two using states;
the locking mechanism comprises a trigger piece arranged on the support plate and positioned in the axial projection of the rotating shaft and an actuating piece arranged on the support plate and linked with the trigger piece, a connecting piece abutted against the support plate is arranged on the switching reflector, when the trigger piece is covered by the axial projection of the rotating shaft, the switching reflector can rotate relative to the support plate, and when the trigger piece falls into the axial projection of the opening, the actuating piece locks the switching reflector;
the rotating track of the switching reflector in the circumferential direction of the rotating shaft is always positioned between the two triggering pieces.
The conventional lens and shaft connection method usually adopts a joggle connection mode for connection, but because the rotating shaft in the application often has a rotating movement trend due to the switching of far and near images, on the premise, the switching reflector can have relative lagging rotation performance due to the fact that the switching reflector is a driven part, and in the process of long-time use, an applicant finds that the connecting part of the switching reflector and the rotating shaft is loosened to cause that the switching reflector cannot be switched to a corresponding angle after the rotation is finished or small-range deviation occurs, so that the optical path is deviated, the far and near images cannot be correspondingly projected to the correcting lens adjusting module, and the imaging loss is caused.
Therefore, the condition of looseness between the switching reflector and the rotating shaft can be ignored by adopting the mode of the technical scheme, and the characteristic is applied to enable the switching reflector to accurately stay at the preset position to form a corresponding included angle, so that the switching precision is improved, and the service life of the switching reflector is prolonged.
Preferably, the switching reflector is provided with two and two the correction lens adjusting modules correspond one to one, the switching reflector is along the axial of rotation axis slide connect in on the rotation axis, and two the switching reflector slides connect on same connecting piece, the connecting piece both ends and both sides backup pad butt, the correction lens adjusting modules set up respectively in two sets of relative motion's seat that slides, the seat that slides with the linkage of switching reflector.
Through adopting above-mentioned technical scheme, this kind of scheme that sets up and to adopt two correction lenses in can adaptation interpupillary distance adjustment process can guarantee again that the light path can not take place great deviation under the circumstances of reduce cost.
Preferably, the executive component is provided with a locking end connected to the support plate in a sliding manner, the end of the locking end is hemispherical, and the connecting component is provided with a conical hole for the end of the locking end to penetrate through.
By adopting the technical scheme, after the locking end is locked for many times to cause abrasion, the hemispherical end surface and the conical hole are matched to ensure that the hemispherical end surface and the conical hole can be stably kept on the same axis, so that the positioning accuracy of the switching reflector is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the occupied volume is small;
2. the multifunctional optometry instrument has multiple functions of subjective optometry, objective optometry and the like;
3. the service life is longer, and the precision is higher.
Drawings
Fig. 1 is a schematic diagram of an integrated optometry optical path system.
Fig. 2 is a front view of the integrated optometry optical path system.
Fig. 3 is a schematic structural diagram of an optometric mechanism in an optometric instrument.
Fig. 4 is a distancing schematic of the positive lock mechanism.
FIG. 5 is a schematic view, partially in section, of the actuator in locking engagement with the linkage.
Description of the reference numerals: 1. a corrective lens adjustment module; 2. an image generator; 3. a far vision imaging module; 4. switching a reflector; 5. a drive mechanism; 31. a first lens; 32. a second lens; 33. a third lens; 61. a first reflecting mirror; 62. a second reflector; 7. a diopter measurement module; 13. a lens-eye distance measuring module; 71. a first light splitting sheet; 72. a second dichroic sheet; 73. an infrared light source generating unit; 74. a measuring unit; 8. a sliding seat; 51. a rotating shaft; 52. a drive motor; 91. a base; 92. a support plate; 93. a mounting seat; 53. an opening; 41. a positioning core; 10. a connecting member; 11. a limit locking mechanism; 111. a trigger; 112. an executive component; 101. a conical bore; 12. a deflector rod; 121. a kidney-shaped hole; 131. measuring a reflector; 132. a lens-eye distance measuring camera.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses integral type optometry optical path system. Referring to fig. 1 and 2, the integrated optometry optical path system includes a corrective lens adjustment module 1, an image generator 2, a telescopic imaging module 3, a switching mirror 4, and a driving mechanism 5. The image generator 2 is used for generating far-vision images to the far-vision imaging module 3, and the whole optical path system also has near-vision images which are aligned with the correction lens adjusting module 1. The switching mirror 4 is used to select either a near-vision image or a far-vision image and project it into the corrective lens adjustment module 1 under the drive of the drive mechanism 5. Here, the corrective lens adjusting modules 1 are provided in two sets and arranged side by side in the horizontal direction so as to adapt to the situation where both eyes are simultaneously performing optometry. The correcting lens adjusting module 1 may be a tab type adjusting mode or a rotation type adjusting mode.
The image generator 2 employs a high-resolution microdisplay, and the displayed image is projected after being magnified by the far vision imaging module 3 and intersects with the optical path of the corrective lens adjustment module 1. Specifically, the far-vision imaging module 3 includes a first lens 31, a second lens 32, and a third lens 33, which are sequentially arranged from the image generator 2, where the first lens 31 is a concave-convex lens, a convex surface of the first lens 31 faces the image generator 2, the second lens 32 is a convex lens, the third lens 33 is a plano-convex lens, and a plane of the third lens 33 faces the second lens 32. After the first lens 31, the second lens 32 and the third lens 33 act, the image generated by the image generator 2 is magnified and projected onto the switching mirror 4. Under the action of the far-vision imaging module 3, the image generated by the image generator 2 will image the image at the defined far-vision in a smaller space, and generally speaking, the distance of the image imaging should be at a position of 5 m.
In this embodiment, the image generator 2 and the far-vision imaging module 3 are both located on the same side of the optical path of the corrective lens adjustment module 1, and generally, the height of the image generator and the height of the far-vision imaging module are both lower than the height of the corrective lens adjustment module 1 in the horizontal plane, and it should be noted that the optical path projected by the far-vision imaging module 3 to the switching mirror 4 intersects with the optical path of the corrective lens adjustment module 1, and the switching mirror 4 is located at the intersection of the optical paths. In a preferred embodiment, the optical path of the far vision imaging module 3 is perpendicular to the optical path of the corrective lens adjustment module 1.
Furthermore, the space utilization rate can be improved by additionally arranging the first reflecting mirror 61 and the second reflecting mirror 62 between the telescopic imaging module 3 and the switching mirror 4. The first mirror 61 is configured to receive an image emitted by the telescopic imaging module 3, reflect the image onto the second mirror 62, and reflect the image onto the switching mirror 4 through the second mirror 62. Generally, the first mirror 61 is positioned directly above the telescopic imaging module 3, the second mirror 62 is inclined in the same direction as the first mirror 61 and is positioned at one side of the first mirror 61 in the horizontal direction, and the first mirror 61 and the second mirror 62 are also inclined at the same angle, so that the incident light incident on the first mirror 61 and the reflected light reflected by the second mirror 62 are parallel to each other, and the imaging distance of the telescopic image generated by the image generator 2 can be adjusted by increasing the distance between the first mirror 61 and the second mirror 62.
The first reflector 61 and the second reflector 62 are both provided with two sets, the two second reflectors 62 are located at two sides where the two first reflectors 61 depart from, and the inclination angles of the two first reflectors 61 and the inclination angles of the two second reflectors 62 are opposite, so that the far-vision images passing through the two sets of first reflectors 61 and the two second reflectors 62 are respectively projected into the two sets of corrective lens adjusting modules 1. The switching reflective mirror 4 can be provided with two pieces of reflective mirror and respectively correspond to the two correction lens adjusting modules 1, and the switching reflective mirror 4 can also be made into a structure which is long in length and can cover the two correction lens adjusting modules 1, so that the correction lens adjusting modules 1 on the two sides share the same switching reflective mirror 4.
Taking the diagram as an example, the near-sighted image can be placed in the axially extended track of the correction lens adjustment module 1, and meanwhile, in the process of switching the projection of the near-sighted image to the correction lens adjustment module 1, the switching reflector 4 rotates to be in a horizontal state and does not interfere with the projection path of the near-sighted image, and at the moment, the switching reflector 4 can reflect the far-sighted image according to the original path.
As an alternative embodiment, the near vision image may also be disposed on a side higher than the corrective lens adjusting module 1, preferably, it is located right above the far vision imaging module 3, and the rotation axis for controlling the switching reflective mirror 4 to rotate will be located between two optical paths, so that the switching between the near vision image and the far vision image can be realized by controlling the switching reflective mirror 4 to rotate 90 °.
It can be seen that the optical path system with this structure has higher integration degree than the original far-near switching mode, and can integrate far-view images and near-view images in a smaller space, so that they can be distributed in the same device after being packaged by the housing. So that optometry can be realized also in an environment with a small space.
Further, the optical path system further comprises a diopter measuring module 7 and a lens distance measuring module 13, wherein the diopter measuring module 7 is used for measuring the diopter of the measured person, and the lens distance measuring module 13 is used for measuring the lens distance of the measured person. The diopter measurement module 7 includes a first light splitter 71, a second light splitter 72, an infrared light source generation unit 73, and a measurement unit 74, where the first light splitter 71 is located between the correction lens adjustment module 1 and the switching mirror 4 and is used to reflect and separate a part of light between the correction lens adjustment module 1 and the switching mirror 4. The second light splitter 72 is parallel to the first light splitter 71, and the second light splitter 72 is used for receiving the reflected light of the first light splitter 71. The infrared light source generating unit 73 is configured to generate parallel infrared light to the second light splitter 72, and under the action of the second light splitter 72, the second light splitter 72 reflects a part of the infrared light to the first light splitter 71, and reflects the part of the infrared light to the correction lens adjusting module 1 through the first light splitter 71, and projects the part of the infrared light onto the retina of the subject. The infrared beam reflected by the retina is projected to the measurement unit 74 through the corrective lens adjusting module 1, the first beam splitter 71 and the second beam splitter 72 in sequence.
The measuring unit 74 is composed of a differentiation plate and a measuring CCD, the infrared beam projected to the measuring unit 74 passes through the differentiation plate, and then is detected by the measuring CCD, and the measuring CCD calculates according to the collected image to obtain the corresponding diopter data.
The mirror-eye distance measuring module 13 includes a measuring mirror 131 and a mirror-eye distance measuring camera 132, and the mirror-eye distance measuring camera 132 is configured to acquire a mirror-eye distance image reflected by the measuring mirror 131. The distance between the spectacle lens and the eye is the distance between the rear surface vertex of the spectacle lens and the vertex of the cornea, and the distance is usually 12mm as a reference, and the matching degree is changed along with the change of the distance. In the detection process, the relative position of the lens-eye distance measuring camera 132 is static, and the relative position of the eyes is changed, so that the lens-eye distance can be obtained by corresponding conversion only according to the positions of the eyes in the image acquired by the lens-eye distance measuring camera 132.
The embodiment of the present application further discloses an optometry apparatus, as shown in fig. 3, for an optometry mechanism constructed based on the optical path system mentioned in the foregoing embodiment, the optometry apparatus can be subsequently manufactured into a device for sale through design of an external housing (e.g. a bottom-support device for limiting the head of a subject, etc.) and packaging. Wherein, the correction lens adjusting module 1 of the optometry equipment is provided with two groups and respectively corresponds to the eyes of the examinee. And for the function of adaptation interpupillary distance regulation, each correction lens adjusting module 1 all is fixed in one and slides in seat 8, and two slide 8 and slide and connect on same base 91, and two slide 8 can be followed the horizontal direction and be close to or keep away from to the different interpupillary distance of adaptation. As an alternative embodiment, the two sliding seats 8 can be controlled to move by a screw rod with opposite thread directions at two ends, so that the center between the two sliding seats 8 is not deviated.
Further, the diopter measuring module 7 is integrated on the sliding seat 8, and a cavity for the first light splitter 71 to be installed and to be penetrated back and forth is formed on the sliding seat 8. The image generator 2 and the telescopic imaging module 3 are integrated on a mounting seat 93, and the mounting seat 93 is fixed on the base 91. The two first reflectors 61 above the far-vision imaging module 3 are also mounted on the base 91, and the two second reflectors 62 are fixed on the sliding seat 8, so that the sliding seat 8 can drive the second reflectors 62 to move synchronously during the sliding process.
The drive mechanism 5 includes a rotary shaft 51 and a drive motor 52, the switching mirror 4 is connected to the rotary shaft 51, support plates 92 fixed to the base 91 are rotatably connected to both ends of the rotary shaft 51, and the drive motor 52 is mounted on the outer side of one of the support plates 92 and drives the rotary shaft 51 to rotate. The rotating shaft 51 has a cavity penetrating in the axial direction and an opening 53 at one side of the cavity, the switching mirror 4 is inserted into the opening 53 and connected with the positioning core 41 placed in the cavity, and the width of the opening 53 is larger than the thickness of the switching mirror 4. Specifically, the positioning core 41 has a cylindrical structure, and the cavity is correspondingly shaped as a cylindrical hole, so that the switching mirror 4 can rotate with respect to the rotating shaft 51.
Further, the switching mirror 4 is provided with a link 10 abutting against the support plate 92, and when the rotary shaft 51 is rotated reciprocally by the driving motor 52, the switching mirror 4 is rotated reciprocally with respect to the rotary shaft 51 by the link 10 to have a certain hysteresis at some timing, and for example, the switching mirror 4 is provided with two switching mirrors 10, the same rod-shaped link 10 is connected to the back surfaces of the two switching mirrors 4, and both ends of the link 10 abut against the support plates 92 on both sides, respectively. When the switching mirror 4 is a single piece, it may be realized by the structure of the connector 10, or the switching mirror 4 may be directly abutted against the two side support plates 92 to realize the above function, and at this time, the two sides of the switching mirror 4 are the connectors 10.
Referring to fig. 3 and 4, the support plate 92 is further provided with a limit lock mechanism 11 for fixing the switching mirror 4 in two use states. Taking the configuration shown in the drawing as an example, one of the usage states is a state in which the switching mirror 4 is horizontal, in which the far-vision image emitted from the image generator 2 is blocked by the switching mirror 4, and the near-vision image can be freely viewed by the subject through the first dichroic sheet 71 and the corrective lens adjustment module 1. The other use state is a state when the switching mirror 4 is at an angle of 45 ° with respect to the horizontal plane, and at this time, the far-vision image magnified by the far-vision imaging module 3 is reflected to the corrective lens adjustment module 1 by the switching mirror 4. The specific angles thereof have a relative relationship according to the emission angles of the image generator 2, and are not described herein again.
Furthermore, the limit lock mechanism 11 includes a trigger 111 disposed on the support plate 92 and located in the axial projection of the rotating shaft 51, and an actuator 112 disposed on the support plate 92 and linked with the trigger 111, wherein the switching mirror 4 is provided with a link 10 abutting against the support plate 92, the switching mirror 4 is rotatable relative to the support plate 92 when the trigger 111 is covered by the axial projection of the rotating shaft 51, and the actuator 112 locks the switching mirror 4 when the trigger 111 falls into the axial projection of the opening 53.
Briefly described with reference to fig. 4, when the rotary shaft 51 is rotated counterclockwise, the switching mirror 4 abuts against the sidewall of the clockwise opening 53, and the switching mirror 4 and the rotary shaft 51 are continuously rotated in one-way synchronization. At this time, the trigger 111 located at the counterclockwise side of the opening 53 is first shielded by the rotating shaft 51 until the actuator 112 is controlled to lock the switching mirror 4 when the portion of the opening 53 rotates to the trigger 111 and the trigger 111 is exposed to the portion of the opening 53. At this time, if the rotating shaft 51 is rotated counterclockwise, due to the delayed rotation of the switching mirror 4, the rotating shaft 51 is rotated first to shield the trigger 111 in the exposed state from the rotating shaft 51, at this time, the actuator 112 unlocks the switching mirror 4, the switching mirror 4 can be abutted against the sidewall of the opening 53 on the counterclockwise side of the rotating shaft 51 to perform the synchronous motion, and at this time, as can be seen from the foregoing analysis, when the other trigger 111 is exposed to the opening 53, the switching mirror 4 is locked by the other actuator 112.
In the conventional connection method, the switching mirror 4 and the rotating shaft 51 are mostly connected by a joggle or an adhesive, and since the switching mirror 4 is a driven part during use, the connection between the switching mirror 4 and the rotating shaft 51 may reduce the fitting precision due to material abrasion or unrecoverable rigid deformation, thereby causing a small range of play between the switching mirror 4 and the rotating shaft 51.
Under the structural design of the application, the opening 53 is enlarged by applying the characteristic, so that the switching reflector 4 can rotate relative to the rotating shaft 51, and the angle of the switching reflector 4 is not limited by limiting the rotation of the rotating shaft 51 in the subsequent locking process, so that the switching reflector 4 can be accurately limited to a preset angle. It can be seen that the scheme of this application can reduce the cooperation precision that the drunkenness brought and descend to reduce not hard up the emergence of the condition, improved life. Generally, a large frictional force is not required between the link 10 and the support plate 92 to hinder the switching mirror 4.
Meanwhile, if the technical scheme of using two switching reflectors 4 is adopted, in order to ensure the precision, the scheme that the switching reflectors 4 synchronously slide along with the sliding of the sliding seat 8 is adopted, and if the traditional joggle sliding structure is adopted, the two sides of the opening 53 and the switching reflectors 4 are greatly abraded, so that the loosening condition is further aggravated. However, according to the structure of the present application, the pressure between the switching mirror 4 and the side wall of the opening 53 is reduced, and at the same time, the wear thereof is reduced, and the service life is increased.
Referring to fig. 4 and 5, as a specific implementation manner, the triggering member 111 may be implemented by a proximity switch, and the actuating member 112 may be a clip slidably connected to the supporting plate 92, and the extension and retraction of the actuating member is controlled by an electromagnet, and when the actuating member 112 extends out of the end surface of the supporting plate 92, the rotation of the switching mirror 4 is limited. The two ends of the connecting member 10 are provided with conical holes 101, and one end of the actuating member 112 protruding from the supporting plate 92 is a locking end, which is inserted into the conical hole 101 to lock the switchable mirror 4. The end of the locking end is hemispherical, and the actuating member 112 always has a certain amount of protrusion and keeps abutting against the bottom of the conical hole 101, so that the conical hole 101 and the locking end can always ensure the alignment on the axis to ensure the switching precision of the switching reflector 4. Meanwhile, the actuating element 112 and the triggering element 111 can also be realized in a mechanical mode, the actuating element 112 and the triggering element 111 are linked and have the tendency of sliding towards the direction extending out of the supporting plate 92, and the triggering element 111 can retract by being driven by the rotating shaft 51 through arranging a guide surface on the triggering element 111, so that the actuating element 112 is synchronously driven to retract.
The limit lock mechanisms 11 on both sides may be configured to restrict switching between the two states of the mirror 4, or the limit lock mechanisms 11 on both sides may be configured to restrict one use state.
Referring to fig. 3, if the switching mirror 4 is configured to be two and designed to slide relative to the rotating shaft 51, the switching mirror 4 needs to be configured to slide synchronously with the sliding seat 8, at this time, two shift levers 12 are connected to each sliding seat 8 along the longitudinal rotation direction, the two shift levers 12 respectively abut against two sides of the corresponding switching mirror 4, the other ends of the two shift levers 12 are provided with waist-shaped holes 121 for the connecting pieces 10 to penetrate through, the waist-shaped holes 121 are arranged along the length direction of the shift levers 12, and the connecting pieces 10 are correspondingly configured to be cylindrical. When the sliding seat 8 slides, the switching reflective mirror 4 is driven to move synchronously.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An integrated optometry optical path system, comprising:
a corrective lens adjustment module (1);
an image generator (2) for generating a far-view image;
a far-vision imaging module (3) for imaging the image in the image generator (2) to far vision, with the optical path of the far-vision imaging module (3) intersecting the optical path of the corrective lens adjustment module (1);
the switching reflector (4) is positioned at the intersection of the light path of the correcting lens adjusting module (1) and the light path of the far-vision imaging module (3);
and the driving mechanism (5) is used for driving the switching reflector (4) to rotate, and when the switching reflector (4) rotates, the driving mechanism is used for selecting a near-sight image or a far-sight image to be imaged to the correcting lens adjusting module (1).
2. The integrated optometry optical path system of claim 1, wherein: the corrective lens adjustment module (1) is aligned with a near vision image, and when the near vision image is imaged to the corrective lens adjustment module (1), the switching reflector (4) reflects the far vision image to the image generator (2).
3. The integrated optometry optical path system of claim 1 or 2, wherein: the image generator (2) and the far vision imaging module (3) are both positioned on the same side of the optical path of the correcting lens adjusting module (1), and the optical path of the far vision imaging module (3) is perpendicular to the optical path of the correcting lens adjusting module (1).
4. The integrated optometry optical path system of claim 1, wherein: a first reflector (61) receiving the emission of the far-view imaging module (3) and a second reflector (62) receiving the reflection of the first reflector (61), the far-vision imaging module (3) is projected to a switching reflector (4) through the first reflector (61) and the second reflector (62), and the optical path from the first reflector (61) to the second reflector (62) is horizontally arranged.
5. The integrated optometry optical path system of claim 1, further comprising a diopter measurement module (7), the diopter measurement module (7) comprising:
a first light splitter (71) located between the corrective lens adjustment module (1) and the switching mirror (4);
a second dichroic sheet (72) for receiving the reflected light of the first dichroic sheet (71);
an infrared light source generating unit (73) for generating parallel infrared light to the second dichroic sheet (72) and reflecting the parallel infrared light to the first dichroic sheet (71) through the second dichroic sheet (72);
and a measuring unit (74) receiving the image reflected from the first dichroic sheet (71) and transmitted through the second dichroic sheet (72) to detect diopter.
6. The integrated optometry optical path system of claim 1, wherein: the device is characterized by further comprising a lens-eye distance measuring module (13), wherein the lens-eye distance measuring module (13) comprises a measuring reflective mirror (131) and a lens-eye distance measuring camera (132), and the lens-eye distance measuring camera (132) is used for acquiring a lens-eye distance image reflected by the measuring reflective mirror (131).
7. An optometric instrument, characterized by applying the optical path system according to any one of claims 1 to 6;
the correcting lens adjusting module (1) is provided with two groups of correcting lens adjusting modules which respectively correspond to two eyes of a detected person.
8. Optometric instrument of claim 7, wherein: the driving mechanism (5) comprises a rotating shaft (51) controlled to rotate, the rotating shaft (51) is provided with a cavity penetrating along the axial direction and an opening (53) positioned at one side of the cavity, the switching reflector (4) is arranged in the opening (53) in a penetrating mode and is connected with a positioning core (41) arranged in the cavity, and the width of the opening (53) is larger than the thickness of the switching reflector (4);
the two sides of the rotating shaft (51) are respectively provided with a supporting plate (92) for supporting the rotating shaft (51) to rotate, and the supporting plates (92) are provided with limit locking mechanisms (11) for driving the switching reflector (4) to be fixed in two using states;
the locking mechanism comprises a trigger piece (111) arranged on the support plate (92) and positioned in the axial projection of the rotating shaft (51) and an actuating piece (112) arranged on the support plate (92) and linked with the trigger piece (111), a connecting piece (10) abutted against the support plate (92) is arranged on the switching reflector (4), when the trigger piece (111) is covered by the axial projection of the rotating shaft (51), the switching reflector (4) can rotate relative to the support plate (92), and when the trigger piece (111) falls into the axial projection of the opening (53), the actuating piece (112) locks the switching reflector (4);
the rotation track of the switching reflector (4) in the circumferential direction of the rotating shaft (51) is always positioned between the two triggering pieces (111).
9. Optometric instrument of claim 8, wherein: switch reflector (4) be provided with two and with two correct lens adjusting module (1) one-to-one, switch reflector (4) edge the axial of rotation axis (51) slide connect in on rotation axis (51), and two switch reflector (4) and slide and connect on same connecting piece (10), connecting piece (10) both ends and both sides backup pad (92) butt, correct lens adjusting module (1) and set up respectively on two sets of relative motion's seat (8) that slide, slide seat (8) with switch reflector (4) linkage.
10. Optometric instrument of claim 9, wherein: executive component (112) have and slide and connect the locking end on backup pad (92), the tip of locking end is the hemisphere, be provided with on connecting piece (10) and supply conical bore (101) that the tip of locking end wore to establish.
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| CN202210892354.6A CN115153421B (en) | 2022-07-27 | 2022-07-27 | Integrated optometry light path system and optometry equipment |
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| CN202210892354.6A CN115153421B (en) | 2022-07-27 | 2022-07-27 | Integrated optometry light path system and optometry equipment |
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