CN208339490U - A kind of intelligence visual function preliminary examination instrument - Google Patents

Abstract

The utility model discloses a kind of intelligent visual function preliminary examination instrument, table is detected including the refractive apparatus for changing eyeglass lens power and with 5 meters of refractive apparatus distance of Intelligent eyesight, the Intelligent eyesight detection table includes display screen and remote controler, the display screen shows single eyesight detection mark, the remote controler and display screen communicate to connect, to send the eyesight detection mark that signal change display screen is shown, when giving a test of one's eyesight, for changing the eyeglass lens power on eyes is attached to, the eyesight detection that remote controler change display screen is shown identifies refractive apparatus.The intelligent visual function preliminary examination instrument of the utility model, the degree being applied on human eye can effectively be changed by the setting of refractive apparatus, and can effectively show that single eyesight detection mark is measured for people by the setting of display screen, so effectively realize the effect of a quick eyesight preliminary examination.

Description

A kind of intelligence visual function preliminary examination instrument

Technical field

The utility model relates to a kind of human eyesight and diopter detection device, more particularly to a kind of intelligence Visual function preliminary examination instrument.

Background technique

Eyesight detection occupies highly important status inside depending on photomedicine, whether the eye health of a people, the One step requires to carry out optometry, carrys out the preliminary quality for judging eyes by optometry, while with the fast development of electronic product, Cause the myopia of present people more and more common, and optometry it is accurate whether it is also accurate with the refractive diopter that finally judges Whether it is closely bound up.

During near-sighted optometry, presently the most accurate optometry mode is to be sitting in by a people apart from visual chart , then again can be with the glasses of quick replacement eyeglass, during optometry by taking one on 5 meters of position, doctor is specified Then a symbol on visual chart is gone to see this symbol by the patient of optometry, doctor constantly goes to change and wear during seeing The eyeglass of glasses on patient, until patient says and has been able to be clearly seen that symbol, then eyeglass at this time is shown The degree shown is the refractive diopter of patient, so come the effect for realizing a near-sighted optometry, however since never band crosses glasses People can not quickly and effectively know its degree, thus during optometry just need constantly since the smallest degree to It is upper plus, will seem during such optometry very inconvenient, while even if having bespectacled people for before, ought to also will be from The smallest degree starts to examine, because of the problem of existing teenager is easy to appear pseudo-myopia, if so from band before The degree of glasses directly up adds, it is easy to the problem of optometry inaccuracy occurs, therefore be arranged one before actually starting optometry It is a can substantially detect refractive diopter just and seem very it is necessary to.

Utility model content

It can be before optometry to people in view of the deficienciess of the prior art, the purpose of this utility model is to provide one kind The vision power number of eye carries out the intelligent visual function preliminary examination instrument of effective preliminary examination.

To achieve the above object, the utility model provides following technical solution: a kind of intelligence visual function preliminary examination instrument, packet Include the Intelligent eyesight detection table for changing the refractive apparatus of refractive diopter and with 5 meters of refractive apparatus distance, the Intelligent eyesight Detection table includes display screen and remote controler, and the display screen shows eyesight testing sighting target, the remote controler and display screen communication link It connects, to send the eyesight testing sighting target that shows of signal change display screen, when giving a test of one's eyesight, refractive apparatus is for changing being attached to eye Eyeglass lens power on eyeball, the eyesight testing sighting target that remote controler change display screen is shown.

The refractive apparatus includes eyeglass cylinder as a further improvement of the utility model, and the eyeglass cylinder includes tubular Shell and the eyepiece and object lens for being separately positioned on cylindrical case both ends are equipped with turn mutually side by side between the eyepiece and object lens As prism and aperture, the cylindrical case includes fixed cylinder and rotating cylinder, the rotating cylinder and fixed cylinder coaxially rotatable movement Connection, the aperture and object lens are arranged in rotating cylinder, and the eyepiece and inverting prism are arranged in fixed cylinder, the light Side of the inverting prism backwards to eyepiece is arranged in circle, and the rotating cylinder is equipped with pointer, institute relative to the outer wall of fixed cylinder one end The outer wall that fixed cylinder is stated relative to rotating cylinder one end is equipped with scale, and the pointer is oppositely arranged with scale, when rotating cylinder is opposite When fixed cylinder rotation, the rotating cylinder relative displacement between fixed cylinder simultaneously, and pointer is directed toward scale position different on scale.

The rotating cylinder is towards in offering on the inner wall of one end of fixed cylinder as a further improvement of the utility model, Screw thread, the fixed cylinder are threadedly engaged relative to external screw thread, the internal screw thread is offered on the outer wall of rotating cylinder with external screw thread, real The rotatable mobile connection of existing rotating cylinder and fixed cylinder.

Signal launch-box, institute are fixedly connected on the outer wall of the fixed cylinder as a further improvement of the utility model, It states signal launch-box and display screen is wirelessly connected, there is rotary encoder between the fixed cylinder and rotating cylinder, the rotation is compiled Code device and signal launch-box communicate to connect, and for exporting in refractive diopter data to signal launch-box, and pass through signal launch-box Display screen is sent to show by display screen.

The rotary encoder includes rotating ring and coding collar, the rotation as a further improvement of the utility model, Ring is coaxially fixed with rotating cylinder, and the coding collar is coaxially fixed with fixed cylinder, and resistance wire, the resistance are wound on the coding collar One end of silk and the power electric connection in signal launch-box, other end ground connection, end face of the rotating ring towards coding collar one end It is equipped with contact head, the contact head is mutually contradicted with resistance wire, which is electrically connected with signal launch-box, when rotating cylinder phase When for fixed cylinder rotation, the contact head slides on resistance wire.

The contact head includes cylindrical case and contact steel ball, the shell as a further improvement of the utility model, One end be fixedly connected with the end face of rotating ring, the other end is funnel-shaped, has funnel hole thereon, and the contact steel ball, which is arranged, to exist In funnel hole, the outer wall of the contact steel ball and the hole wall of funnel hole are inconsistent, partially stretch out out of funnel hole, and and resistance wire Inconsistent, the shell is coaxially equipped with spring, and one end of the spring and rotating ring are inconsistent, and the other end offsets with contact steel ball Touching, the rotating ring, spring, shell and contact steel ball are made by conductive material, and the rotating ring passes through conducting wire and letter The electrical connection of number launch-box.

The signal launch-box includes box body and is arranged in the intracorporal transmitting of box as a further improvement of the utility model, Circuit, the transmit circuit include:

Radio communication circuit, the radio communication circuit and rotating ring couple, and are also wirelessly connected with display screen, for acquiring rotation The resistance value of change and resistance wire is input in display screen after being converted into wireless signal.

As a further improvement of the utility model, the display screen be equipped with for measure tested personnel and display screen away from From laser range finder, there is in the display screen distance threshold, measure distance when laser range finder and be less than or be greater than distance When threshold value, display screen display alarm information.

The beneficial effects of the utility model can effectively realize that one quickly changes by the setting of refractive apparatus It is attached to the effect of tested person's ophthalmic refractive degree, and passes through the setting of display screen and remote controler, so that it may by showing screen display The test for showing existing test visual chart identifies, and by the setting of remote controler, can effectively realize one it is long-range Change the effect of test mark, thus it is middle in such a way that doctor is directly referred to ear of maize compared with the prior art, on the one hand completely Will not hinder the sight of tested personnel, on the other hand can by tester voluntarily hand-held remote controller carry out selftest , the personnel of test are simplified, while can also can so realize self-service preparatory detection by the cooperation with refractive apparatus The substantially degree of eyesight so precisely detects for the later period and provides strong basis, and accurate detection existing so does not just need It is had detected since minimum degree, it is only necessary to it is adjusted on the basis of the substantially degree that refractive apparatus detected, It greatly facilitates in the prior art for the eyesight testing of near-sighted personnel.

Detailed description of the invention

Fig. 1 is the overall structure figure of the intelligent visual function preliminary examination instrument of the utility model；

Fig. 2 is the cross-sectional view of refractive apparatus in Fig. 1；

Fig. 3 is the overall structure figure of the rotary encoder in Fig. 2.

Specific embodiment

The utility model is described in further detail below in conjunction with embodiment given by attached drawing.

Shown in 3, a kind of intelligent visual function preliminary examination instrument of the present embodiment, including for changing refractive diopter Refractive apparatus 1 and detect table 2 with 5 meters of 1 distance of refractive apparatus of Intelligent eyesight, the Intelligent eyesight detection table 2 includes display Screen 21 and remote controler 22, the display screen 21 show that eyesight testing sighting target, the remote controler 22 are communicated to connect with display screen 21, with The eyesight testing sighting target that signal change display screen 21 is shown is sent, when giving a test of one's eyesight, refractive apparatus 1 is for changing being attached to eyes On eyeglass lens power, remote controler 22 change display screen 21 show eyesight testing sighting target, using the present embodiment eyesight preliminary examination During instrument preliminary examination eyesight, display screen 21 is arranged on a fixed position first, then be tested personnel station away from On position of 21 5 meters from display screen, refractive apparatus 1 is then taken, refractive apparatus 1 will be the equal of the effect of a glasses , the mark of the test on display screen 21, which is adjusted, to be seen for tested personnel's eyes, during the test, can be led to Cross the refractive diopter that refractive apparatus 1 directly reflects tested personnel, then according to this test degree as benchmark, by This refractive diopter carries out adjustment up and down, so completes to detect the myopia for being tested personnel, so compared with the prior art The mode of middle test refractive diopter, has effectively carried out the effect of an eyesight preliminary examination, has avoided and test dioptric in the prior art When degree, the problem that the testing time is too long and optometry is inaccurate caused by needing to test since minimum degree, so It can realize 1, check the diopter before optometry, the degree including myopia, long sight provides technical parameter for optometry, and it is accurate to improve Save the time.2, it is examined for clinic point, 1.0 sighting targets on intelligent visual function evaluation instrument can be seen clearly, be diverted to optometry outpatient service, 1.0 sighting targets cannot be seen clearly, be diverted to eyeground or further checked.Condition is provided for quick intelligent medical treatment.3, collect eyesight, synthesis Optometry and visual function evaluation in one, for community health, portable medical and wisdom internet+provide platform these three beneficial to effect Fruit.

As a kind of improved specific embodiment, the refractive apparatus 1 includes eyeglass cylinder 11, and the eyeglass cylinder 11 includes Cylindrical case 111 and the eyepiece 112 and object lens 113 for being separately positioned on 111 both ends of cylindrical case, the eyepiece 112 and object lens Inverting prism 114 and aperture 115 mutually side by side is equipped between 113, the cylindrical case 111 includes fixed cylinder 1111 and rotation Cylinder 1112, the rotating cylinder 1112 is all provided with the coaxial rotatable mobile connection of fixed cylinder 1111, the aperture 115 and object lens 113 It sets in rotating cylinder 1112, the eyepiece 112 and inverting prism 114 are arranged in fixed cylinder 1111, and the aperture 115 is arranged In inverting prism 114 backwards to the side of eyepiece 112, the rotating cylinder 1112 is equipped with relative to the outer wall of 1111 one end of fixed cylinder Pointer 3, the fixed cylinder 1111 are equipped with scale 4, the pointer 3 and 4 phase of scale relative to the outer wall of 1112 one end of rotating cylinder To setting, when rotating cylinder 1112 is rotated relative to fixed cylinder 1111, rotating cylinder 1112 is opposite between fixed cylinder 1111 simultaneously Displacement, and pointer 3 is directed toward scale position different on scale 4, passes through object lens 113, eyepiece 112, aperture 115 and inverting prism 114 Setting, can effectively form a focus adjustment glasses, so only need by adjust object lens 113 and aperture 115 with The overall distance of eyepiece 112 and inverting prism 114 can effectively adjust focal length, so realize one well to tested person Both member, which applies degree, can be changed the effect of glasses, while pass through the setting of rotating cylinder 1112 and fixed cylinder 1111, just may be implemented in The effect of the overall distance of object lens 113 and aperture 115 and eyepiece 112 and inverting prism 114 is adjusted during rotation again, in turn The effect of current test degree is indicated by the mutual cooperation of pointer 3 and scale 4 on rotating cylinder 1112 and fixed cylinder 1111, So the mode that rotating cylinder 1112 and 1111 length direction of fixed cylinder extend, the mistake of adjusting are arranged along compared to by scale 4 Cheng Jinhang conversion, so that the precision of scale 4 is more preferable, refractive apparatus 1 can more accurately test out the refractive diopter of people, together When in such a way that rotating cylinder 1112 and fixed cylinder 1111 mutually rotate, can effectively adjust focal length, use more It is convenient and reliable.

As a kind of improved specific embodiment, on the inner wall of the one end of the rotating cylinder 1112 towards fixed cylinder 1111 Offer internal screw thread, the fixed cylinder 1111 offers external screw thread on the outer wall relative to rotating cylinder 1112, the internal screw thread with External screw thread is threadedly engaged, and the rotatable mobile connection of rotating cylinder 1112 and fixed cylinder 1111 is realized, using internal screw thread and external screw thread Thread fiting mode, can effective mobile connection rotatable first, while structure is simple, and in the process of processing In, it is only necessary to internal screw thread is outputed on the inner wall of rotating cylinder 1112, external screw thread is outputed on the outer wall of fixed cylinder 1111, greatly The process of refractive apparatus 1 is facilitated greatly.

As a kind of improved specific embodiment, signal launch-box is fixedly connected on the outer wall of the fixed cylinder 1111 5, the signal launch-box 5 is wirelessly connected with display screen 21, between the fixed cylinder 1111 and rotating cylinder 1112 there is rotation to compile Code device 6, the rotary encoder 6 is communicated to connect with signal launch-box 5, for exporting refractive diopter data to signal launch-box 5 It is interior, and display screen 21 is sent to by signal launch-box 5 and is shown by display screen 21, checking or needing due to scale 4 When wanting certain rudimentary knowledge that can effectively understand the content to be expressed of scale 4, thus be family using preliminary examination, Still not general enough, so pass through the setting of signal launch-box 5 and rotary encoder 6 in the present embodiment, rotation can be passed through Relative rotation degree between rotating cylinder 1112 and fixed cylinder 1111 is converted into electric signal and is input to signal launch-box by encoder 6 It in 5, is then transmitted on display screen 21 by signal launch-box 5, survey can effectively be shown by display screen 21 later Degree is tried, just not needing rudimentary knowledge so just can intuitively observe test degree, so that the preliminary examination instrument of the present embodiment It can be applied to family's detection, versatility is stronger.

As a kind of improved specific embodiment, the rotary encoder 6 includes rotating ring 61 and coding collar 62, described Rotating ring 61 is coaxial fixed with rotating cylinder 1112, and the coding collar 62 is coaxial fixed with fixed cylinder 1111, on the coding collar 62 It is wound with resistance wire, one end of the resistance wire and the power electric connection in signal launch-box 5, other end ground connection, the rotating ring 61 are equipped with contact head 611 towards the end face of 62 one end of coding collar, and the contact head 611 is mutually contradicted with resistance wire, the contact First 611 are electrically connected with signal launch-box 5, and when rotating cylinder 1112 is rotated relative to fixed cylinder 1111, the contact head 611 is in electricity It is slided on resistance silk, during preliminary examination, tested people just needs constantly to rotate rotating cylinder 1112 so that focal length is continuous Change, change until tested people can be clearly seen that show on display screen 21 single is tested and identify, and revolving During rotating cylinder 1112 is rotated relative to fixed cylinder 1111, contact head 611 will slide on resistance wire, on resistance wire Different parts are contacted, thus according to the relationship between the resistance value size and conductor length of resistance, this makes it possible to realize to connect Cooperate the resistance value of output constantly to change between contact 611 and resistance wire, so realizes rotating cylinder 1112 and fixed cylinder 1111 Between rotation angle reflected by way of electric signal, realize refractive diopter electronization output, such display screen 21 can effectively be shown refractive diopter, simultaneously because light needs pass in rotating cylinder 1112 and fixed cylinder 1111 Broadcast, if so directly adopt encoder in the prior art, due to encoder in the prior art structure be it is discoid, such as The problem of this can not be tested well caused by will causing encoder that light path obstruction is fallen, thus used in the present embodiment On the one hand the mating reaction of rotating ring 61 and coding collar 62 can effectively realize the electronization output of refractive diopter, another party The problem of face can be to avoid stopping optical path to lead to not test.

As a kind of improved specific embodiment, the contact head 611 includes cylindrical case 7 and contacts steel ball 8, described One end of shell 7 is fixedly connected with the end face of rotating ring 61, and the other end is funnel-shaped, has funnel hole, the contact steel thereon Pearl 8 is arranged in funnel hole, and the outer wall of the contact steel ball 8 and the hole wall of funnel hole are inconsistent, partially stretches out out of funnel hole, And it is inconsistent with resistance wire, the shell 7 is coaxially equipped with spring 9, and one end of the spring 9 and rotating ring 61 are inconsistent, another End and contact steel ball 8 are inconsistent, and the rotating ring 61, spring 9, shell 7 and contact steel ball 8 are made by conductive material, The rotating ring 61 is electrically connected by conducting wire with signal launch-box 5, during rotating contact, need to guarantee rotating ring 61 and Electric conductivity between resistance wire, thus in the present embodiment, using the setting of contact steel ball 8, steel ball can be contacted when rotated 8 rotate on resistance wire, the contact between contact head 611 and resistance wire are changed to be in rolling contact by sliding contact, Ke Yiyou Reducing in rotary course because of the resistance that contact generates for effect, on the other hand can also reduce contact wear, avoid refractive apparatus 1 The too low problem of service life, and pass through the setting of spring 9 and shell 7, connecing between steel ball 8 and resistance wire can be kept in contact Touching state, during avoiding contact with because occur caused by gap between contact steel ball 8 and resistance wire between the two it is conductive not It can avoid contact with steel ball 8 as the setting by funnel hole with unobstructed problem and be asked by what spring 9 was ejected out of shell 7 Topic.

As a kind of improved specific embodiment, the signal launch-box 5 includes box body 51 and is arranged in box body 51 Transmit circuit 52, the transmit circuit 52 includes:

Radio communication circuit 521, the radio communication circuit 521 and rotating ring 61 couple, and are also wirelessly connected with display screen 21, For acquiring the resistance value of rotating ring 61 Yu resistance wire, it is input in display screen 21 after being converted into wireless signal, by wireless The setting of telecommunication circuit 521 can effectively realize the wireless communication between display screen 21, so can effectively realize Degree data are transferred in display screen 21, the effect then shown by display screen 21, wherein the wireless communication of the present embodiment Circuit 521 can be infrared communication or the mode of radio communication.

As a kind of improved specific embodiment, the display screen 21 is equipped with for measuring tested personnel and display screen The laser range finder 211 of 21 distances, the display screen 21 is interior to have distance threshold, measures distance when laser range finder 211 and is less than Or when being greater than distance threshold, 21 display alarm information of display screen is by drawing on the ground during existing myopia detection One with 5 meters of 21 distance of display screen of line, be then tested people and stand on online position, to guarantee the accuracy of test, however During familial self preliminary examination, human eye, which is merely able to stare at display screen 21, to be seen, if thus there is the position that people deviates from 5 rice noodles It setting, tester also can not timely and effectively have found, it will so lead to the problem of final testing result inaccuracy, thus in this reality The setting for passing through laser range finder 211 in example is applied, the distance between people and display screen 21 can be effectively detected, so occur When the distance between the position of people and display screen 21 are not equal to 5 meters, people can effectively be found out by display screen 21, And to be adjusted, it can so guarantee the accuracy of test data.

In conclusion the eyesight preliminary examination instrument of the present embodiment can be simulated in the prior art by the setting of refractive apparatus 1 The glasses that degree can change, and pass through the setting of display screen 21 and remote controler 22, it can effectively change display mark, such as This just can be realized the effect of a simple and effective eyesight preliminary examination, and when so that the later period is accurately detected, there is no need to from most Low powered posterior chamber starts to have detected, and greatly reduced the time of eyesight detection.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of intelligence visual function preliminary examination instrument, it is characterised in that: including for changing refractive diopter refractive apparatus (1) and with The Intelligent eyesight that 5 meter of distance of refractive apparatus (1) detects table (2), and Intelligent eyesight detection table (2) includes display screen (21) and distant It controlling device (22), the display screen (21) shows eyesight testing sighting target, and the remote controler (22) and display screen (21) communicate to connect, with The eyesight testing mark of signal change display screen (21) display is sent, when giving a test of one's eyesight, refractive apparatus (1) is for changing being attached to Eyeglass lens power on eyes, remote controler (22) change the eyesight testing mark of display screen (21) display.

2. intelligence visual function preliminary examination instrument according to claim 1, it is characterised in that: the refractive apparatus (1) includes mirror Piece cylinder (11), the eyeglass cylinder (11) include cylindrical case (111) and the eyepiece for being separately positioned on cylindrical case (111) both ends (112) and object lens (113) inverting prism (114) and light mutually side by side, is equipped between the eyepiece (112) and object lens (113) Enclose (115), the cylindrical case (111) includes fixed cylinder (1111) and rotating cylinder (1112), the rotating cylinder (1112) with consolidate The coaxial rotatable mobile connection of safety barrel (1111), the aperture (115) and object lens (113) are arranged in rotating cylinder (1112), The eyepiece (112) and inverting prism (114) are arranged in fixed cylinder (1111), and aperture (115) setting is turning as rib Mirror (114) is equipped with backwards to the side of eyepiece (112), the rotating cylinder (1112) relative to the outer wall of fixed cylinder (1111) one end Pointer (3), the fixed cylinder (1111) are equipped with scale (4) relative to the outer wall of rotating cylinder (1112) one end, the pointer (3) It is oppositely arranged with scale (4), when rotating cylinder (1112) is relative to fixed cylinder (1111) rotation, rotating cylinder (1112) is simultaneously and solid Relative displacement between safety barrel (1111), and pointer (3) is directed toward scale position different on scale (4).

3. intelligence visual function preliminary examination instrument according to claim 2, it is characterised in that: the rotating cylinder (1112) is towards admittedly Internal screw thread, outer wall of the fixed cylinder (1111) relative to rotating cylinder (1112) are offered on the inner wall of one end of safety barrel (1111) On offer external screw thread, the internal screw thread is threadedly engaged with external screw thread, and that realizes rotating cylinder (1112) and fixed cylinder (1111) can Moving in rotation connection.

4. intelligence visual function preliminary examination instrument according to claim 2 or 3, it is characterised in that: the fixed cylinder (1111) It is fixedly connected on outer wall signal launch-box (5), the signal launch-box (5) and display screen (21) are wirelessly connected, the fixation There are rotary encoder (6) between cylinder (1111) and rotating cylinder (1112), the rotary encoder (6) and signal launch-box (5) Communication connection is sent to display for exporting in refractive diopter data to signal launch-box (5), and by signal launch-box (5) Screen (21) is shown by display screen (21).

5. intelligence visual function preliminary examination instrument according to claim 4, it is characterised in that: the rotary encoder (6) includes Rotating ring (61) and coding collar (62), the rotating ring (61) and rotating cylinder (1112) are coaxial fixed, the coding collar (62) with Fixed cylinder (1111) is coaxially fixed, and resistance wire, one end of the resistance wire and signal launch-box are wound on the coding collar (62) (5) end face of the power electric connection in, other end ground connection, the rotating ring (61) towards coding collar (62) one end is equipped with contact Head (611), the contact head (611) mutually contradict with resistance wire, which is electrically connected with signal launch-box (5), when When rotating cylinder (1112) is rotated relative to fixed cylinder (1111), the contact head (611) is slided on resistance wire.

6. intelligence visual function preliminary examination instrument according to claim 5, it is characterised in that: the contact head (611) includes cylinder Shape shell (7) and contact steel ball (8), one end of the shell (7) are fixedly connected with the end face of rotating ring (61), and the other end is in leakage It is bucket-shaped, there is funnel hole thereon, the contact steel ball (8) is arranged in funnel hole, the outer wall and funnel of contact steel ball (8) The hole wall in hole is inconsistent, partially stretches out out of funnel hole, and inconsistent with resistance wire, and the shell (7) is coaxially equipped with spring (9), one end of the spring (9) and rotating ring (61) are inconsistent, and the other end and contact steel ball (8) are inconsistent, the rotating ring (61), spring (9), shell (7) and contact steel ball (8) are made by conductive material, and the rotating ring (61) passes through conducting wire It is electrically connected with signal launch-box (5).

7. intelligence visual function preliminary examination instrument according to claim 6, it is characterised in that: the signal launch-box (5) includes Box body (51) and the transmit circuit (52) being arranged in box body (51), the transmit circuit (52) include:

Radio communication circuit (521), the radio communication circuit (521) and rotating ring (61) couple, also wireless with display screen (21) Connection is input in display screen (21) after being converted into wireless signal for acquiring the resistance value of rotating ring (61) and resistance wire.

8. intelligence visual function preliminary examination instrument according to claim 1 or 2 or 3, it is characterised in that: on the display screen (21) Equipped with for measuring the laser range finder (211) of tested personnel Yu display screen (21) distance, in the display screen (21) with away from From threshold value, when laser range finder (211), which measures distance, to be less than or be greater than distance threshold, display screen (21) display alarm letter Breath.