CN101716067A - Ocular accommodation sensitivity detector - Google Patents
Ocular accommodation sensitivity detector Download PDFInfo
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- CN101716067A CN101716067A CN200910109715A CN200910109715A CN101716067A CN 101716067 A CN101716067 A CN 101716067A CN 200910109715 A CN200910109715 A CN 200910109715A CN 200910109715 A CN200910109715 A CN 200910109715A CN 101716067 A CN101716067 A CN 101716067A
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Abstract
The invention relates to an ocular accommodation sensitivity detector comprising a base, a stand, a scope device, a scope switching transmission mechanism and an interpupillary distance adjustment mechanism, wherein two independent scope devices of the scope device respectively comprise lens discs, lens switching location devices and lenses, the lens discs respectively rotatably support on a stand A and a stand B of the stand, one or both of the stand A and the stand B is/are connected on the base in a sliding way, and the sliding direction enable the lens discs to be close or far, and the lens switching location devices comprise elastic elements, locating elements and positioning grooves which are respectively arranged on a coaxial mechanism and a stand mechanism of the lens discs; the scope switching transmission mechanism is arranged between the base and the stand and comprises a transmission belt and a driving wheel and a driven wheel which are connected with the transmission belt in a transmission way; the interpupillary distance adjustment mechanism comprises a screw rotatably supported on the base and an internal thread matched with the screw and arranged on the stand. The invention enhances the ocular accommodation sensitivity detection level and can get rid of false detection results.
Description
Technical field
The present invention relates to a kind of visual performance checkout gear, more particularly, relate to the checkout gear that a kind of human eye regulates sensitivity.
Background technology
Ocular accommodation sensitivity is a kind of clinical ophthalmology inspection, under simple eye or binocular fixation situation, the adjusting of alternate stimulated respectively and make fast and the accurate ability of conditioned reaction in order to measure simple eye or eyes, reacted the dynamic function that eyes are regulated, be mainly used in and estimate simple eye or ability that eyes are regulated and unusual, to asthenopia, tiltedly the diagnosis and the treatment of diseases such as amblyopia, reading disorder have positive role.
Traditional ocular accommodation sensitivity measuring method comprises the eyeglass swing method and apart from swing method, wherein the eyeglass swing method is more commonly used, the method requires those who are investigated to wear correcting spectacle lens far away, the upset eyeglass that uses a positive and negative 2.00D or positive and negative 1.00D is at reading distance gaze detection sighting target, the person under inspection whenever sees i.e. counter-rotating upset mirror behind sighting target clearly, and negative mirror continues 60 seconds so repeatedly behind the first telescope direct, the examiner writes down the number of times that always overturns therebetween, and observes the variation of the upset rhythm and pace of moving things.
Traditional eyeglass swing method is subjected to all multifactor impacts to the testing result of ocular accommodation sensitivity, manual factor, detection distance, sighting target size and sighting target number comprising the eyeglass upset, and study or training effect etc., these factors cause the measurement environment of tested individuality inconsistent, have influenced the comparability and the accuracy of measurement result.
There is following defective in traditional eyeglass swing method to the detection of ocular accommodation sensitivity:
1, the upset owing to eyeglass in the conventional lenses swing method is manually to be finished by the detected person, influenced by the individual difference of manual factor, can't guarantee to detect the accuracy of distance (comprising the distance of eyeglass and eyes and the distance of eyeglass and sighting target), thereby the accuracy of testing result is lower, comparability is not high;
2, the sighting target that is used to detect is a sighting target in kind, and whether limited amount is seen sighting target clearly and distinguished by measured oneself, and can't be judged according to detection case by the tester in the detection, therefore can't get rid of the probability of testing result falseness.
3, can only carry out artificial counting to eyeglass upset number of times by tester or detected person in the testing process, and can only change the rhythm and pace of moving things that more significantly overturns and qualitatively judge roughly, can't quantitatively obtain the accurate blanking time of each upset, have very important significance and change the upset blanking time (upset cycle) that quantitative analysis may change with the detecting process passing.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of ocular accommodation sensitivity detector is provided, and overcomes the defective that the testing result accuracy is lower, comparability is not high that prior art exists, and improves the accuracy and the comparability of ocular accommodation sensitivity testing result.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of ocular accommodation sensitivity detector, it is characterized in that, comprise support, frame, detection lens device, detect mirror switching drive mechanism and pupillary distance adjusting device;
Described detection lens device comprises that first detects the lens device and the second detection lens device, this first detects lens device and second and detects lens device and comprise that respectively lenz disc, eyeglass switch positioner and be arranged on eyeglass on this lenz disc, and sight line is passed described eyeglass and observed sighting target;
Described frame comprises frame A and frame B, one of this frame A and frame B or be slidingly connected at simultaneously on the described support;
Described first detects the lenz disc rotating support of lens device on described frame A, described second detects the lenz disc rotating support of lens device on described frame B, two described lenz disc axis are parallel, the lenz disc card is positioned at and is suitable for two of detected persons and observes the positions of sighting target by described eyeglass, and the described eyeglass on the two described lenz discs is suitable for detected person two, and to observe the position of examining be the detection position; Two described lenz discs realize that along identical or rightabout rotation eyeglass switches, on two described lenz discs, the position being set and order being set of described eyeglass satisfied when described eyeglass is switched in two described lenz disc rotations, and the described eyeglass that is positioned at described detection position is for satisfying the pairing eyeglass that detects needs;
Described eyeglass switches positioner and comprises flexible member, has the keeper of arc locating surface and the detent that matches with the arc locating surface of this keeper, described flexible member pressurized promotes described keeper makes the described arc locating surface of described keeper cooperate with described detent, when each described eyeglass is positioned at described detection position, the described keeper that promoted by described flexible member is corresponding cooperates with a described detent; Described detent is arranged on the described rack construction, and described flexible member and described keeper are arranged on the described lenz disc or are coaxial and relatively rotate on the immobilized structure with described lenz disc; Or detent is arranged on the described lenz disc or coaxial and relatively rotate on the immobilized structure with described lenz disc, and described flexible member and described keeper are arranged on the described rack construction;
One of described frame A and frame B or the glide direction that is slidingly connected with described support simultaneously satisfy two described lenz discs near or away from, the distance that lays respectively at the described eyeglass on the two described lenz discs with adjustment adapts to detected person's interpupillary distance requirement;
Described detection mirror switches drive mechanism and comprises drivewheel, two driven pulleys and driving-belt, described drivewheel rotating support is on the described frame or on the described support, corresponding, the rotating support coaxial with described lenz disc of described driven pulley is on described frame, and the described driven pulley of this correspondence is relative static in rotation direction when carrying out the eyeglass switching with described lenz disc; Described driving-belt be in transmission connection described drivewheel and described driven pulley;
Described pupillary distance adjusting device comprises along described frame glide direction rotating support and axial limiting at the screw rod on the described support be arranged on the described frame and the female thread that cooperates with this screw flight.
In ocular accommodation sensitivity detector of the present invention, described detection mirror switches drive mechanism and comprises reverse wheel, this reverse wheel and described drivewheel are positioned at the same side of the described two driven pulley lines of centres, this reverse wheel rotating support is on the described support or on the described frame of elasticity rotating support, described driving-belt be in transmission connection in proper order one of described drivewheel, described driven pulley, described reverse wheel, described driven pulley two, described drivewheel, form sealing and be in transmission connection.
In ocular accommodation sensitivity detector of the present invention, described detection mirror switches drive mechanism and comprises first, the second two drivewheels and adjusting rods, described adjusting rod comprises the body of rod and is positioned at the handle of this body of rod end, described adjusting rod body of rod axis along the glide direction rotating support of described frame on described frame A and frame B, described adjusting rod handle is positioned at outside described frame A and/or the frame B, the body of rod of this adjusting rod respectively with described first drivewheel, one of second drivewheel or be slidingly connected the body of rod of this adjusting rod and described first drivewheel simultaneously, second drivewheel is in the static relatively connection of rotation direction; Described driving-belt comprises first driving-belt and second driving-belt, described first driving-belt be in transmission connection described first drivewheel with the described first coaxial driven pulley that is connected of described lenz disc that detects lens device, described second driving-belt be in transmission connection described second drivewheel with the described second coaxial driven pulley that is connected of described lenz disc that detects lens device.
In ocular accommodation sensitivity detector of the present invention, described frame A and frame B are slidingly connected on the described support, in described pupillary distance adjusting device, described screw rod middle part rotating support and axial limiting are on described support, and both sides, described screw rod middle part comprise and described frame A and frame B threaded engagement and the opposite screw thread of rotation direction; Or in described pupillary distance adjusting device, described screw rod one end rotating support and axial limiting on described support, the other end comprises and the screw thread of described frame A or described frame B threaded engagement.
In ocular accommodation sensitivity detector of the present invention, described flexible member and described keeper that the eyeglass of described detection lens device switches positioner are arranged on the described driven pulley, and described detent correspondence is arranged on described frame and the described driven pulley end face facing surfaces.
In ocular accommodation sensitivity detector of the present invention, comprise the lenz disc positioner, the lenz disc of described mutual corresponding matching is implemented in the relative static connection of rotation direction with driven pulley by this lenz disc positioner and is connected with relatively rotating in rotation direction, the lenz disc of described mutual corresponding matching and the supporting of driven pulley coaxial rotation, lenz disc that this is corresponding and driven pulley can separately rotate; Described lenz disc positioner comprises flexible member A, has the keeper A of arc locating surface and the detent A that matches with the arc locating surface of this keeper A, and described flexible member A pressurized promotes described keeper A makes the described arc locating surface of described keeper A cooperate with described detent A; Described flexible member A, keeper A are arranged in the hole of the described driven pulley end face adjacent with described lenz disc, described detent A relative set is on the described lenz disc end face adjacent with described driven pulley, or described flexible member A, keeper A be arranged in the hole of the described lenz disc end face adjacent with described driven pulley, and described detent A relative set is on the described driven pulley end face adjacent with described lenz disc; When the corresponding and described detent A of described flexible member A of the corresponding and described detent cooperation of the described flexible member of described eyeglass switching positioner, described lenz disc positioner cooperated, an eyeglass in the described eyeglass on the described lenz disc was positioned at described detection position.
In ocular accommodation sensitivity detector of the present invention, comprise that eyeglass switches stopping means, this eyeglass switches stopping means and comprises stopper slot and spacer pin, described stopper slot is arranged on the end face of the described driven pulley adjacent with described frame or on the end face wheel rim, and described spacer pin is arranged on the described frame and can inserts or extract in the described stopper slot; Described stopper slot comprises and spacing two confined planes that cooperate of described spacer pin, corresponding two the adjacent described eyeglasses that cover this stopper slot correspondence on the described lenz disc of the spacing stroke of these two confined planes switch to the stroke of described detection position and adapt with it, two position locations that described eyeglass switched the positioner correspondence when two the adjacent described eyeglasses that position corresponding covering described lenz disc on this stopper slot correspondence be set of this spacing stroke on described driven pulley switched to described detection position respectively.
In ocular accommodation sensitivity detector of the present invention, comprise Lower jaw support, described Lower jaw support is arranged on the position that is suitable for supporting detected person's lower jaw on the described support; Or comprising Lower jaw support and volume holder, described Lower jaw support and volume holder are arranged on the position that is suitable for supporting detected person's lower jaw and forehead on the described support.
In ocular accommodation sensitivity detector of the present invention, comprise the switching signal source, switching signal harvester, computer, display driver and controller and the display that connect successively, described display is positioned at described lenz disc rear, described switching signal source produces the switching signal of described eyeglass, described switching signal harvester picks up this switching signal and passes to described computer, and the described switching signal of described Computer Processing is also controlled described display by described display driver and controller and shown and the conversion sighting target.
In ocular accommodation sensitivity detector of the present invention, described switching signal source comprises pick off, the switching signal issue device related with the rotation of described lenz disc, described pick off is connected on the described frame corresponding to described switching signal issue device and accepts the eyeglass switching signal that described switching signal issue device sends, and described pick off outfan connects eyeglass switching signal treatment facility input.
Implement ocular accommodation sensitivity detector of the present invention, compared with the prior art, its beneficial effect is:
1. adopt new detection eyeglass switching construction, improve the accuracy that detects distance and detected the eyeglass property quick and precisely of switching time, make testing result accuracy and comparability improve greatly, improved the ocular accommodation sensitivity detection level, provide foundation more accurately for using " ocular accommodation sensitivity " index to look merit rating;
2. for detecting, ocular accommodation sensitivity provides more accurate checkout equipment;
3. can realize detecting the automatic statistics of data and switching synchronously automatically of sighting target, improved the detection convenience, can compare by the true sighting target of the detected person being discerned sighting target result and switching simultaneously, get rid of false detection results, improve the verity of testing result.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the principle schematic of eyeglass governor motion embodiment one in the ocular accommodation sensitivity detector of the present invention.
Fig. 2 is the structural front view of ocular accommodation sensitivity detector embodiment one of the present invention.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is the structural front view of ocular accommodation sensitivity detector embodiment two of the present invention.
Fig. 5 is the right view of Fig. 4.
Fig. 6 be among Fig. 4 A to the partial view that removes rack construction.
Fig. 7 is the principle schematic of ocular accommodation sensitivity detector embodiment three of the present invention.
Fig. 8 is switching signal statistics and a sighting target display control section structural representation among the ocular accommodation sensitivity detector embodiment three of the present invention.
The specific embodiment
Embodiment one
As Fig. 1, Fig. 2, shown in Figure 3, ocular accommodation sensitivity detector of the present invention comprises support 12, frame 10, detects lens device, detects mirror switching drive mechanism and pupillary distance adjusting device.
Detecting lens device comprises the detection lens device 1 that is used in pairs and detects lens device 2.Detect lens device 1 and detect lens device 2 and comprise that respectively lenz disc 100, eyeglass switch positioner and be arranged on eyeglass 3 on the lenz disc 100, detected person's sight line is passed eyeglass 3 can observe the sighting target (not shown) that is positioned at eyeglass 3 opposite sides, the electronics sighting target that sighting target can adopt sighting target in kind or display screen to show.
As shown in Figure 3, in the present embodiment, being slidingly connected of frame A, frame B and support 12 is achieved in that in frame A, frame B bottom separately contiguous block 101 is set, counterface at contiguous block 101 and support 12 is provided with dovetail tangs and the dovetail groove that is slidingly matched mutually respectively, cooperatively interacts by this dovetail tangs and dovetail groove and realizes being slidingly connected of frame and support.In other embodiments, can adopt in frame bottom T shape projection is set, relative set and this T shape projection T connected in star that is slidingly matched is realized being slidingly connected of frame and support on support, can also adopt the pair of parallel cylindrical guide is set on the support, being slidingly connected of relative set and this cylindrical guide are slidingly matched on frame guide pin bushing realization frame and support.
In other embodiments, frame A can be fixedly connected on the support 12, frame B is slidingly connected on the support 12, or with frame B be fixedly connected on the support 12, frame A is slidingly connected on the support 12, the above-mentioned glide direction that is slidingly connected satisfy two lenz discs 100 near or away from, the distance that lays respectively at the eyeglass 3 on two lenz discs 100 with adjustment adapts to detected person's interpupillary distance requirement.
Lenz disc 100 rotating supports that detect lens device 1 are on frame A, and lenz disc 100 rotating supports that detect lens device 2 are on frame B.The axis of two lenz discs is parallel, the card of lenz disc 100 is positioned at and is suitable for two positions of observing sighting target by eyeglass 3 of detected person.For example, the card of two lenz discs 100 is in same horizontal level, but does not require that the card strictness of two lenz discs 100 is in same horizontal level, only requires the card of two lenz discs 100 to satisfy two of detected persons and observes sighting targets by eyeglass 3 and get final product.
In the present embodiment, two lenz discs 100 are detecting the driving lower edge equidirectional rotation realization eyeglass switching that mirror switches drive mechanism.On two lenz discs 100, the position being set and order being set of eyeglass 3 satisfied when two lenz discs 100 rotate switching eyeglass 3 in the same way, and the eyeglass 3 that is positioned at the detection position is for satisfying the pairing eyeglass that detects needs.
In other embodiments, change detection mirror switching drive mechanism structure, can realize the rotation realization eyeglass switching in opposite direction under the driving that detects mirror switching drive mechanism of two lenz discs 100, can realize the object of the invention equally.On two lenz discs 100, the position being set and order being set of eyeglass 3 satisfied when eyeglass 3 is switched in 100 reverse rotations of two lenz discs, and the eyeglass 3 that is positioned at the detection position is for satisfying the pairing eyeglass that detects needs.
In the present embodiment, three pairs of positive and negative 1D, positive and negative 2D and forward and negative sense prisms are set on each lenz disc 100 detect eyeglass 3, eyeglass 3 reverse settings on two lenz discs 100, when the rotation of two lenz discs 100 realizes that eyeglasses switch, the eyeglass 3:+1D on two lenz discs 100 ,-1D ,+2D ,-2D, forward prism, negative sense prism switch to the detection position in pairs.Eyeglass 3 on each lenz disc 100 can be uniform, also can adopt non-equal mode for cloth to arrange eyeglass 3, all can realize the object of the invention.
In other embodiments, as required, two couples of positive and negative 1D, positive and negative 2D can be set on each lenz disc 100 detect eyeglass 3, realizations+1D ,-1D ,+2D ,-the pairing detection of 2D.
In other embodiments, according to detecting needs, it is right that two lenz discs can be provided with the detection eyeglass that satisfies quick change detection needs.
In other embodiments, in order to realize the requirement of simple eye detection, setting is rotatably connected on the support and can be turned to the opaque covering plate of the eyeglass detection position of two lenz discs, forwards this covering plate to an eyeglass detection position, can detect the another eye.
As shown in Figure 3, eyeglass switches positioner 42 and comprises that spring flexible members such as (or) gum elastics, place kick (or have the keeper of arc locating surface, as locate the first quarter moon piece etc. on the hemisphere or the band face of cylinder) and the detent that matches with the arc locating surface of this place kick, the spring pressurized promotes place kick makes the arc locating surface of place kick cooperate realization to locate with detent.The cross force that is designed as the time, the interact axial compressive force that eyeglass is switched the flexible member of positioner that produces of the arc locating surface of keeper and detent can overcome the elastic force of flexible member, thereby compression elastic element, make keeper and detent break away from the location and cooperate, realize that eyeglass switches.When each eyeglass is positioned at the detection position, the place kick that promoted by spring is corresponding cooperates with a detent.
In the present embodiment, detent is arranged on the structure of frame 10, and spring and place kick correspondence are arranged on lenz disc 100 coaxial settings and relatively rotate immobilized detection mirror with lenz disc 100 to be switched on the driven pulley 4 of drive mechanism.In other embodiments, detent can be arranged on the structure of frame 10, spring and place kick correspondence are arranged on the lenz disc 100.In other embodiments, detent can also be arranged on the lenz disc 100 or coaxial and relatively rotate (as driven pulley 4) on immobilized other structures, spring and place kick correspondence are arranged on the rack construction with lenz disc 100.
In the present embodiment, detecting mirror switches drive mechanism and comprises drivewheel 6, two driven pulleys 4, deflecting roller 7 and driving-belts 5, drivewheel 6 rotating supports with the extension machine seat board 9 of support 12 on, driven pulley 4 correspondences are bearing on the frame 10 with lenz disc 100 coaxial rotation, this driven pulley 4 is relative static in rotation direction with lenz disc 100, driving-belt 5 order be in transmission connection one of drivewheel 6, driven pulley 4, reverse wheel 7, driven pulley 4 two, drivewheel 6, form sealing and be in transmission connection.Like this, rotary driving wheel 6 will drive driven pulley 4 and drive lenz disc 100 rotations, realize the switching of eyeglass 3.Adopt above-mentioned detection mirror to switch drive mechanism, because the diameter of drivewheel 6 is much larger than the diameter of driven pulley 4, drivewheel 6 rotates a less angle, and driven pulley 4 is bigger angle of corresponding rotation, thereby realizes the quick switching of eyeglass 3.
Eyeglass switches the switching comprise between the paired eyeglass and the switching of transition detection eyeglass.In pairs the switching between the eyeglass as the switching between+1D eyeglass and the-1D eyeglass ,+switching between switching, forward prism and the negative sense prism between 2D eyeglass and the-2D eyeglass etc., the switching of transition detection eyeglass is as being transformed into positive and negative 1D eyeglass detection the switching of positive and negative 2D eyeglass detection.
The effect of deflecting roller 7 is the cornerites that increase 5 pairs of driven pulleys 4 of driving-belt, improve the reliability of transmission, so reverse wheel 7 is arranged on the same side that is positioned at two driven pulleys, 4 lines of centres with drivewheel 6.In the present embodiment, two deflecting rollers 7 are set, rotating support also can only be provided with a deflecting roller 7 on the extension of support 12 machine seat board 9 respectively.In other embodiments, two deflecting rollers 7 can be adopted the elastic device rotating support respectively on the frame A and frame B of frame 10, with tension variation by elastic device compensation driving-belt 5 when adjusting interpupillary distance.
The said structure of present embodiment can realize that above-mentioned eyeglass switches simultaneously and rapidly.In other embodiments, can adopt the handover operation of the paired eyeglass of following designs simplification: as shown in Figure 3, above-mentioned detection mirror at present embodiment switches in the drive mechanism structure, and lenz disc 100 and driven pulley 4 rotational support are on same axle, and lenz disc 100 can relatively independently rotate with driven pulley 4; Between lenz disc 100 and driven pulley 4, lenz disc positioner 41 is set, this lenz disc positioner 41 can adopt with eyeglass and switch the identical structure of positioner 42 or the elastic positioning device of other structures, and the position that is provided with that lenz disc positioner 41 and eyeglass switch positioner 42 guarantees corresponding being positioned on the detection position of eyeglass 3 energy on the lenz disc 100.In the structure of lenz disc positioner 41, flexible member, keeper are arranged in the installing hole of the driven pulley end face adjacent with lenz disc, the detent relative set is on the lenz disc end face adjacent with driven pulley, or flexible member, keeper be arranged in the installing hole of the lenz disc end face adjacent with driven pulley, and detent A relative set is on the driven pulley end face adjacent with lenz disc.On drivewheel 6, connect the operating grip that extends to frame A, frame B both sides.Like this, the switching of lenz disc 100 transition detection eyeglasses can be rotated realization with respect to driven pulley 4 by stirring lenz disc 100, and the switching of lenz disc 100 paired eyeglasses can realize by testee's recurrent fluctuations operating grip, make simple and directization of detecting operation.
Pupillary distance adjusting device comprises screw rod 11 and is arranged on the female thread that cooperates with this screw flight on the frame 10, and screw rod 11 on support 12, is handled easily along the glide direction rotating support of frame 10 and axial limiting, but screw rod 11 end setting operation handles.
In the present embodiment, the frame A of frame 10, frame B and support 12 all adopt and are slidingly connected, therefore, the screw thread of screw rod 11 is corresponding comprise the opposite screw thread of two sections rotation directions respectively with the screw-internal thread fit that is arranged on frame A, the frame B, screw rod 11 middle part rotating supports and axial limiting are on support 12, when realizing rotary screw 11, adjust frame A, frame B distance, reach the distance of adjusting between two lenz discs, make detection eyeglass on two lenz discs be fit to the requirement of detected person's interpupillary distance.
In other embodiments, according to the annexation of frame A, frame B and the support 12 of frame 10, determine the concrete structure of pupillary distance adjusting device.As when frame A is fixedlyed connected with support, when frame B and support are slidingly connected, screw rod 11 1 ends are rotated and axial limiting on the support 12 or on the frame A, screw thread is being set on the screw rod 11 and is being arranged on screw-internal thread fit on the frame B etc.
As Fig. 2, shown in Figure 3, in the present embodiment, for making things convenient for detected person's head location, Lower jaw support 8 and E Tuo 13 are set, Lower jaw support 8 and E Tuo 13 are connected on the extended structure of support 12, and described Lower jaw support 8 is provided with the position that is suitable for supporting detected person's lower jaw and forehead with volume holder 13.Wherein Lower jaw support 8 can adopt with being connected of support extended structure and be threaded, so that adjust the position of Lower jaw support 8, satisfies different detected persons' requirement.
In other embodiments, Lower jaw support and E Tuo can be set, or Lower jaw support only is set, all not influence the realization of the object of the invention.
When frame A is fixedlyed connected with support, when frame B and support are slidingly connected, or frame B is fixedlyed connected with support, when frame A and support are slidingly connected, Lower jaw support and E Tuo and support should be adopted laterally to be slidingly connected, so that carrying out Lower jaw support and E Tuo can being moved to the appropriate location when interpupillary distance is regulated.
Embodiment two
Present embodiment and embodiment one are basic identical, and difference is:
One, detect mirror switching drive mechanism and adopt following structure:
As Fig. 4, shown in Figure 5, detect mirror switching drive mechanism and comprise two groups of separate transmission mechanisms and adjusting rod 62, every group of drive mechanism comprise respectively by driving-belt 5 be in transmission connection and rotating support on same frame (frame A or frame B) drivewheel 61, driven pulley 4 and turn to opinion 71, driven pulley 4 and lenz disc are 100 coaxial, axis along the direction rotating support of the glide direction that is slidingly connected perpendicular to frame and support on frame, deflecting roller 71 along the satisfied direction rotating support that driving-belt is led on frame; Adjusting rod 62 comprises the body of rod and is positioned at the handle 63 (can handle be set in body of rod both ends or one end) of body of rod end, the body of rod is along being parallel to glide direction rotating support that frame and support be slidingly connected on frame A and frame B, and adjusting rod handle 63 is positioned at (adjusting rod handle 63 also can only be arranged on outside frame A or the frame B) outside described frame A and the frame B.
In the present embodiment, frame A, frame B are slidingly connected at respectively on the support 12, and correspondingly sliding bearing is on the body of rod of adjusting rod 62 vertically respectively for two drivewheels 61, and drivewheel 61 is relative static in rotation direction with adjusting rod 62.Above-mentioned drivewheel 61 endwisely slips with adjusting rod 62, the relative static connection of rotation direction can adopt semicircle axle, square shaft, plat shaft to cooperate realization with corresponding axis hole.
In other embodiments, when frame A, frame B are slidingly connected on the support 12 respectively, also can adopt a drivewheel 61 to fixedly connected with the body of rod of adjusting rod 62 vertically, sliding bearing is on the body of rod of adjusting rod 62 vertically for another drivewheel 61, and this drivewheel 61 and adjusting rod 62 are in the relative immobilized structure of rotation direction.
In other embodiments, when frame A is fixedlyed connected with support, frame B and support are slidingly connected, or frame A is slidingly connected with support, when frame B is fixedlyed connected with support, corresponding to the frame of fixedlying connected with support, drivewheel 61 can adopt fixed connection structure with adjusting rod 62, also can adopt endwisely slip, the immobilized relatively syndeton of rotation direction; Corresponding to the frame that is slidingly connected with support, drivewheel 61 adopts with adjusting rod 62 and endwisely slips, the relative immobilized syndeton of rotation direction.
In other embodiments, be not provided with and turn to opinion 71, do not influence the realization of the object of the invention.
Two, increase eyeglass and switch stopping means:
Eyeglass is set, and to switch stopping means be when preventing the eyeglass handover operation, because of the excessive eyeglass that makes of operation strength switches the positioner locate failure, improves eyeglass and switch reliability of positioning.As Fig. 5, shown in Figure 6, eyeglass switches stopping means and adopts following structure:
Eyeglass switches stopping means and comprises stopper slot 47 and spacer pin 45, and stopper slot 47 is arranged on the end face of the driven pulley 4 adjacent with frame 10 or on the end face wheel rim, spacer pin 45 is arranged on the frame 10 and can inserts or extract in the stopper slot.Spacer pin 45 inserts stopper slot 47 and realizes that the eyeglass switching is spacing, and spacer pin 45 is extracted stopper slot 47 rotatable driven pulley 4 transition detection eyeglasses 3, and spacer pin 45 stopper slot corresponding with another 47 cooperated.
In the present embodiment, stopper slot 47 is arranged on the end face wheel rim of driven pulley 4, connect sliding panel 46 radially sliding of frame 10 upper edge driven pulleys 4, spacer pin 45 uprightly is connected on the sliding panel 46 and with stopper slot 47 and cooperates, and realizes the connection that spacer pin 45 inserts or extracts stopper slot.In other embodiments, stopper slot 47 is arranged on driven pulley 4 end faces, spacer pin flexible restoring organ (as being arranged on the spring of pushing and withstanding spacer pin 47 in the installing hole or gum elastic circle etc.) is set on frame 10, guarantee that spacer pin 45 is in the spacing state that inserts in the stopper slot 47, pulling spacer pin 45 compression spring or gum elastic circles can be extracted spacer pin 45 in stopper slot 47.
This eyeglass switches stopping means also can be used in embodiment one and other embodiment.
Three, increase switching signal source:
The increase switching signal source is for the automatic statistics of eyeglass switching times and switching cycle and shows that the automatic conversion control of sighting target provides signal.As shown in Figure 5, in the present embodiment, switching signal source comprises optical sensor 43, light source 44 and shading piece.When lenz disc 100 used opaque material, lenz disc can serve as shading piece, when lenz disc uses transparent material, shading piece need be set.
When lenz disc 100 adopted opaque material, lenz disc 100 was a shading piece, and optical sensor 43 and light source 44 are oppositely arranged on respectively on the frame 10 of shading piece both sides, and shading piece comprises through hole 21, and through hole is positioned at the lenz disc axle to the circumference of light source.During detection, a pair of detection eyeglass 3 switches in the detection position repeatedly, in the certain limit of optical sensor 43 and light source 44 corresponding inswept lenz discs, a through hole 21 can be set in this scope, also can through hole 21 be set respectively, can both realize picking up switching times at the two-end-point of this scope.
When lenz disc adopts transparent material, shading piece is arranged on that (shading piece can be overlapping with the lenz disc circumference on the lenz disc circumference, it is outer also can be arranged on the lenz disc circumferential edges), optical sensor 43 and light source 44 are oppositely arranged on respectively on the frame 10 of shading piece both sides, shading piece comprises through hole 21, and the shading piece through hole is positioned at the lenz disc axle to the circumference of light source.Number of openings and position are positioned at the position of detection position corresponding to lenz disc eyeglass quantity and eyeglass, during detection, a pair of detection eyeglass 3 switches repeatedly in the detection position, in the certain limit of optical sensor 43 and light source 44 corresponding inswept shading pieces, a through hole 21 can be set in this scope, also can through hole 21 be set respectively, can both realize picking up switching times at the two-end-point of this scope.
Switching signal source is not limited to said structure, can also adopt other to obtain the structure of eyeglass handover information.As adopting following structure as switching signal source: adopt near switch as pick off, correspondence position at each eyeglass is provided with magnetic material as induction point, to be arranged on the rack construction of closing on lenz disc near switch, when eyeglass is switched in the lenz disc rotation, the induction point of each eyeglass all will be through near switch, cause near switch motion, thereby obtain the eyeglass handover information.
This switching signal source also can use in embodiment one and other embodiment.
Embodiment three
As Fig. 7, shown in Figure 8, present embodiment increases following structure on the basis of embodiment one: the switching signal source 200 of Lian Jieing, switching signal harvester 201, computer 202, display driver and controller 203 and liquid crystal display 204 successively.
The increase structure of present embodiment also can be used in embodiment two and other embodiment.
Claims (10)
1. an ocular accommodation sensitivity detector is characterized in that, comprises support, frame, detection lens device, detects mirror switching drive mechanism and pupillary distance adjusting device;
Described detection lens device comprises that first detects the lens device and the second detection lens device, this first detects lens device and second and detects lens device and comprise that respectively lenz disc, eyeglass switch positioner and be arranged on eyeglass on this lenz disc, and sight line is passed described eyeglass and observed sighting target;
Described frame comprises frame A and frame B, one of this frame A and frame B or be slidingly connected at simultaneously on the described support;
Described first detects the lenz disc rotating support of lens device on described frame A, described second detects the lenz disc rotating support of lens device on described frame B, two described lenz disc axis are parallel, the lenz disc card is positioned at and is suitable for two of detected persons and observes the positions of sighting target by described eyeglass, and the described eyeglass on the two described lenz discs is suitable for detected person two, and to observe the position of examining be the detection position; Two described lenz discs realize that along identical or rightabout rotation eyeglass switches, on two described lenz discs, the position being set and order being set of described eyeglass satisfied when described eyeglass is switched in two described lenz disc rotations, and the described eyeglass that is positioned at described detection position is for satisfying the pairing eyeglass that detects needs;
Described eyeglass switches positioner and comprises flexible member, has the keeper of arc locating surface and the detent that matches with the arc locating surface of this keeper, described flexible member pressurized promotes described keeper makes the described arc locating surface of described keeper cooperate with described detent, when each described eyeglass is positioned at described detection position, the described keeper that promoted by described flexible member is corresponding cooperates with a described detent; Described detent is arranged on the described rack construction, and described flexible member and described keeper are arranged on the described lenz disc or are coaxial and relatively rotate on the immobilized structure with described lenz disc; Or detent is arranged on the described lenz disc or coaxial and relatively rotate on the immobilized structure with described lenz disc, and described flexible member and described keeper are arranged on the described rack construction;
One of described frame A and frame B or the glide direction that is slidingly connected with described support simultaneously satisfy two described lenz discs near or away from, the distance that lays respectively at the described eyeglass on the two described lenz discs with adjustment adapts to detected person's interpupillary distance requirement;
Described detection mirror switches drive mechanism and comprises drivewheel, two driven pulleys and driving-belt, described drivewheel rotating support is on the described frame or on the described support, corresponding, the rotating support coaxial with described lenz disc of described driven pulley is on described frame, and the described driven pulley of this correspondence is relative static in rotation direction when carrying out the eyeglass switching with described lenz disc; Described driving-belt be in transmission connection described drivewheel and described driven pulley;
Described pupillary distance adjusting device comprises along described frame glide direction rotating support and axial limiting at the screw rod on the described support be arranged on the described frame and the female thread that cooperates with this screw flight.
2. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, described detection mirror switches drive mechanism and comprises reverse wheel, this reverse wheel and described drivewheel are positioned at the same side of the described two driven pulley lines of centres, this reverse wheel rotating support is on the described support or on the described frame of elasticity rotating support, described driving-belt be in transmission connection in proper order one of described drivewheel, described driven pulley, described reverse wheel, described driven pulley two, described drivewheel, form sealing and be in transmission connection.
3. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, described detection mirror switches drive mechanism and comprises first, the second two drivewheels and adjusting rods, described adjusting rod comprises the body of rod and is positioned at the handle of this body of rod end, described adjusting rod body of rod axis along the glide direction rotating support of described frame on described frame A and frame B, described adjusting rod handle is positioned at outside described frame A and/or the frame B, the body of rod of this adjusting rod respectively with described first drivewheel, one of second drivewheel or be slidingly connected the body of rod of this adjusting rod and described first drivewheel simultaneously, second drivewheel is in the static relatively connection of rotation direction; Described driving-belt comprises first driving-belt and second driving-belt, described first driving-belt be in transmission connection described first drivewheel with the described first coaxial driven pulley that is connected of described lenz disc that detects lens device, described second driving-belt be in transmission connection described second drivewheel with the described second coaxial driven pulley that is connected of described lenz disc that detects lens device.
4. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, described frame A and frame B are slidingly connected on the described support, in described pupillary distance adjusting device, described screw rod middle part rotating support and axial limiting are on described support, and both sides, described screw rod middle part comprise and described frame A and frame B threaded engagement and the opposite screw thread of rotation direction; Or in described pupillary distance adjusting device, described screw rod one end rotating support and axial limiting on described support, the other end comprises and the screw thread of described frame A or described frame B threaded engagement.
5. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, described flexible member and described keeper that the eyeglass of described detection lens device switches positioner are arranged on the described driven pulley, and described detent correspondence is arranged on described frame and the described driven pulley end face facing surfaces.
6. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, comprise the lenz disc positioner, the lenz disc of described mutual corresponding matching is implemented in the relative static connection of rotation direction with driven pulley by this lenz disc positioner and is connected with relatively rotating in rotation direction, the lenz disc of described mutual corresponding matching and the supporting of driven pulley coaxial rotation, lenz disc that this is corresponding and driven pulley can separately rotate; Described lenz disc positioner comprises flexible member A, has the keeper A of arc locating surface and the detent A that matches with the arc locating surface of this keeper A, and described flexible member A pressurized promotes described keeper A makes the described arc locating surface of described keeper A cooperate with described detent A; Described flexible member A, keeper A are arranged in the hole of the described driven pulley end face adjacent with described lenz disc, described detent A relative set is on the described lenz disc end face adjacent with described driven pulley, or described flexible member A, keeper A be arranged in the hole of the described lenz disc end face adjacent with described driven pulley, and described detent A relative set is on the described driven pulley end face adjacent with described lenz disc; When the corresponding and described detent A of described flexible member A of the corresponding and described detent cooperation of the described flexible member of described eyeglass switching positioner, described lenz disc positioner cooperated, an eyeglass in the described eyeglass on the described lenz disc was positioned at described detection position.
7. ocular accommodation sensitivity detector as claimed in claim 1, it is characterized in that, comprise that eyeglass switches stopping means, this eyeglass switches stopping means and comprises stopper slot and spacer pin, described stopper slot is arranged on the end face of the described driven pulley adjacent with described frame or on the end face wheel rim, and described spacer pin is arranged on the described frame and can inserts or extract in the described stopper slot; Described stopper slot comprises and spacing two confined planes that cooperate of described spacer pin, corresponding two the adjacent described eyeglasses that cover this stopper slot correspondence on the described lenz disc of the spacing stroke of these two confined planes switch to the stroke of described detection position and adapt with it, two position locations that described eyeglass switched the positioner correspondence when two the adjacent described eyeglasses that position corresponding covering described lenz disc on this stopper slot correspondence be set of this spacing stroke on described driven pulley switched to described detection position respectively.
8. as the described ocular accommodation sensitivity detector of one of claim 1 to 7, it is characterized in that comprise Lower jaw support, described Lower jaw support is arranged on the position that is suitable for supporting detected person's lower jaw on the described support; Or comprising Lower jaw support and volume holder, described Lower jaw support and volume holder are arranged on the position that is suitable for supporting detected person's lower jaw and forehead on the described support.
9. as the described ocular accommodation sensitivity detector of one of claim 1 to 7, it is characterized in that, comprise the switching signal source, switching signal harvester, computer, display driver and controller and the display that connect successively, described display is positioned at described lenz disc rear, described switching signal source produces the switching signal of described eyeglass, described switching signal harvester picks up this switching signal and passes to described computer, and the described switching signal of described Computer Processing is also controlled described display by described display driver and controller and shown and the conversion sighting target.
10. ocular accommodation sensitivity detector as claimed in claim 9, it is characterized in that, described switching signal source comprises pick off, the switching signal issue device related with the rotation of described lenz disc, described pick off is connected on the described frame corresponding to described switching signal issue device and accepts the eyeglass switching signal that described switching signal issue device sends, and described pick off outfan connects eyeglass switching signal treatment facility input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910109715XA CN101716067B (en) | 2009-11-13 | 2009-11-13 | Ocular accommodation sensitivity detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910109715XA CN101716067B (en) | 2009-11-13 | 2009-11-13 | Ocular accommodation sensitivity detector |
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| CN101716067A true CN101716067A (en) | 2010-06-02 |
| CN101716067B CN101716067B (en) | 2011-07-20 |
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| CN200910109715XA Expired - Fee Related CN101716067B (en) | 2009-11-13 | 2009-11-13 | Ocular accommodation sensitivity detector |
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