CN85205877U - Vision corrigent metter - Google Patents

Abstract

The utility model relates to a vision correction meter for prevention and cure pseudomyopia, comprising cabinet, optics imaging system, tab terminal arrangement and mechanical drive organization, vision determination part, etc., it used the natural light to replace within entrails light source, with pull wire, turn knob or pull wire draught assemblies, pull wire guide element, sliding member, sliding movement spacing parts, scrolling parts, scrolling guide element, etc. a set of simple manual transmission mechanism organization has replaced the complex electrically operated transmission mechanism, the utility model has the advantages of low cost, convenient operation and portability. And causes this instrument to be possible to popularize from the hospital to the family and school, enhanced the prevention effect.

Description

Vision corrigent metter

This utility model relates to the bathomorphic instrument of control, particularly is applicable to the vision correction instrument of control teenage pseudomyopia.

Vision correction instrument is to utilize optical color image image formation method; make human eye make to come and go the adjustment movement of focusing; as people during, just can see that a width of cloth with certain speed, the far and near chromatic image that alternately moves, makes human eye look into the distance through distant view eye alignment vision correction instrument form; the continuous transformation that nearly thing is stared; and in the process of staring, help ciliary muscle to do to loosen and the regular exercise of shrinking, make ciliary muscle recover elasticity; and then reach vision protection, prevent and the bathomorphic purpose of treatment.

The vision correction instrument of at present domestic and international more popular a kind of bimirror barrel structure.Promptly simulate the different angles that two eyes are observed object earlier, with special stereocamera, take the photo of certain subtense angle simultaneously, pass through the optical system imaging again on people's retina, thereby can be in human brain synthetic stereo image, so not only can strengthen interest, shorten the course of treatment (bitubular is half of monotubular the course of treatment) and raising therapeutic effect, and to correcting teen-age stravismus, to looking certain therapeutical effect being arranged also.

From the data of present grasp as can be known, existing bimirror tube vision correction instrument has following several:

The bimirror tube instrument for prevention and cure of myopia of Japan's production in 1981;

Japan, West Germany in 1984 unite trial-production and adopt the myopia of integrated circuit from rectifying instrument.

Above-mentioned instrument all adopts flight lighting system, and can guarantee like this has constant illumination in the machine, but so must use power supply, complex structure not only, and cost rises, and spectral response is narrower, and distribution of light is not too even.

Above-mentioned instrument also adopts the very big actuating device of motor and speed reducing ratio (for worm and gear) to make the mobile and conversion of image in the machine, though the speed of doing like this is constant, and advantages such as good reproducibility, but also must adopt power supply, and can make complex structure equally, and volume increases, and cost rises.

The purpose of this utility model provides a kind of simple in structure, easy to carry, low price and the popular vision correction instrument of good result of use is arranged.

This utility model is realized by following manner: this instrument is made up of three parts:

First is an optical imaging system, it comprises the bimirror tube that is contained on baffle plate of casing, the convex lens of a low range is housed in each lens barrel, distance between two lens barrels is viewed as suitable to be suitable for the teenager eyes, light source in the system adopts lamp, the baffle plate that is in the casing at bimirror tube relative position place adopts trnaslucent materials, can adopt clouded glass or translucent plastic, but its luminous flux is at least greater than 10 luxs.

Second portion is the inserted sheet device, and it comprises slide unit, and support unit and stereotome, support unit are contained on the slide unit, stereotome be contained on the support unit and with the bottom vertical of casing.

Third part is a mechanical transmission mechanism, it comprises backguy, knob backguy traction element, the backguy guiding parts, the slip limiting component, rolling member, the rolling guiding parts, backguy is contained on the knob backguy traction element and under the guiding of backguy guiding parts and links to each other with slide unit, backguy guiding parts and slip limiting component are contained on the base plate of casing, and slide unit moves down the spacing of slip limiting component, has refilled rolling member on slide unit, and on the base plate of casing, be shaped on the rolling guiding parts, rolling member is rolled along the rolling guiding parts.

By said structure, turning knob formula backguy traction element can make stereotome make rectilinear motion stably in casing, when people aim at lens barrel to eyes, can see the stereotome of far and near checker.

In third part, also can have the test near and distance parts at the knob place of knob backguy traction element, the definition fork-like farm tool used in ancient China when user can move according to stereotome is measured vision.

In order to further specify rather than limit above-mentioned implementation of the present utility model, will provide illustrated embodiments further combined with accompanying drawing below, thereby make details of the present utility model and advantage become more obvious.

The drawing explanation of accompanying drawing:

Fig. 1 is the structural representation of most preferred embodiment of the present utility model;

Fig. 2 is the profile of the 1-1 line in Fig. 1;

Fig. 3 is the structural representation of the knob backguy traction element in the present embodiment;

Fig. 4 is the structural representation of the test near and distance parts in the present embodiment.

Referring to Fig. 1, vision correction instrument comprises a casing ［ 1 ］ in the present embodiment, and this casing has a loam cake ［ 2 ］ and a base plate ［ 3 ］, a front apron ［ 4 ］ and a backboard ［ 5 ］ and right baffle-plate ［ 6 ］ and right baffle plate ［ 7 ］.Luffer boards ［ 8 ］ are arranged on loam cake ［ 2 ］, when opening it, can be used for changing the stereotome (not shown).Two cylindrical lens barrels ［ 10 ］ are housed on the front apron ［ 4 ］, and the interval of two lens barrels is about 65 millimeters, a slice amplification respectively is housed is 4 low range convex lens ［ 11 ］ on each lens barrel ［ 10 ］.Backboard ［ 5 ］ is a clouded glass or a translucent plastic, its luminous flux is about 30 luxs, in the outside of right baffle plate ［ 7 ］ a circular knob ［ 12 ］ is housed, a circular cable quadrant ［ 13 ］ is housed in the inboard of right baffle plate ［ 7 ］ and constitutes dismountable fixedlying connected with circular knob ［ 12 ］, form above-mentioned knob backguy traction element, when turning knob ［ 12 ］, cable quadrant ［ 13 ］ and then rotates thereupon.On the periphery of cable quadrant ［ 13 ］, have and circularize unfolded groove ［ 14 ］, and on the side of cable quadrant ［ 13 ］, have binding post ［ 15 ］, four pulleys ［ 16 ］ that become distributed rectangular are housed on base plate ［ 3 ］, constitute above-mentioned backguy guiding parts.The two piece limiting plates ［ 17 ］ (in Fig. 1 only draw one piece) of above-mentioned slip limiting component for distributing in the longitudinal centre line O-O ' of base plate ［ 3 ］ lateral symmetry, above-mentioned slide unit is for being contained in two limiting plates ［ 17 ］ and the slide plate ［ 18 ］ that can longitudinally smoothly move, in slide plate ［ 18 ］ both sides two stay blocks ［ 19 ］ are arranged, ［ 20 ］ (［ 20 ］ are not shown among the figure), and on both sides of the edge, have two breach.Above-mentioned support unit is one to be vertically mounted on the support ［ 21 ］ on the slide plate ［ 18 ］, respectively has a groove ［ 23 ］ on two vertical edge ［ 22 ］, and stereotome embeds in the groove ［ 23 ］ and can insert easily or take out.

Referring to Fig. 2, on the cross section of cutting open along the 1-1 line among Fig. 1, can see, near the base plate the inboard of the limiting plate ［ 17 ］ on the base plate ［ 3 ］, respectively have a longitudinal fluting ［ 24 ］, thereby form above-mentioned rolling guiding parts.Place, four diagonal angles at the downside of slide plate ［ 18 ］ is shaped on four hemispheric concave surfaces ［ 25 ］ (only drawing among the figure two), the spacing of two longitudinal flutings ［ 24 ］ on the horizontal spacing of this concave surface ［ 25 ］ and the base plate ［ 3 ］ equates, half sphere as four steel balls ［ 26 ］ of above-mentioned slide unit (only draw among Fig. 2 and show two) is contained in the concave surface ［ 25 ］, half sphere is contained in the longitudinal fluting ［ 24 ］ in addition, when the slide plate that steel ball ［ 26 ］ are housed ［ 18 ］ inserts in the limiting plate ［ 17 ］, owing to all be subjected to the restriction of limiting plate around it, thereby can make slide plate ［ 18 ］ flexible, steadily, the straight line that does not have the ground do strictness longitudinally of beating moves.

Referring to Fig. 3, it has further provided the details of mechanical driving device, the two ends of a backguy ［ 9 ］ are tied up in stay block ［ 19 ］, ［ 20 ］ on, the binding post ［ 15 ］ that the center of backguy ［ 9 ］ is enclosed within on the cable quadrant ［ 13 ］ is gone up (not shown among Fig. 3), remainder be enclosed within that pulley ［ 16 ］ is gone up and the groove ［ 14 ］ of cable quadrant ［ 13 ］ on, when knob ［ 12 ］ when moving in the direction of the clock, slide plate ［ 18 ］ drives stereotome and does to depart from moving of lens barrel direction, otherwise, work moves near the lens barrel direction, two pulleys locating near limiting plate ［ 17 ］ can play position-limiting action simultaneously, the moving range that makes slide plate ［ 18 ］ is 40 millimeter, thereby the scope that can make the visual angle is the 0-100 radian, and in the ordinary course of things, the reciprocal time of picture is advisable for 4-5 time with per minute.

Referring to Fig. 4, it is the side view of right baffle plate ［ 7 ］, has one group of scale ［ 27 ］ of measuring vision near the right baffle plate ［ 7 ］ the circular knob ［ 12 ］, and this scale constitutes the test near and distance parts with circle knob ［ 12 ］.When user is transferred to clear position with the stereotome in the casing, can demonstrate the vision of user from scale.

The utility model has the advantages that, replaced the machine inner light source by natural daylight, so not only can save power supply, and its spectral response and distribution of light uniformity are better; Replaced complicated electric transmissio mechanism by simple armstrong's patent transmission mechanism, thereby motor and worm and gear etc. have further been saved, thereby greatly simplify the structure, reduced cost, make vision correction instrument spread to family and school from hospital, and make it to increase the treatment number of times of every day, thereby improved curative effect, thereby and it also can at any time grasp the treatment process with test near and distance parts user.

Owing to adopted rolling and the rolling guiding parts such as steel ball and groove, make it in moving process not have block, beat, creeping phenomenon takes place, its linearity is less than 0.1 millimeter, beating degree is less than 0.05 millimeter, the perpendicularity of slide plate and base plate is less than 0.2 millimeter, basically guarantee the requirement of optical instrument, and because the steel ball wearability is good, guaranteed the precision of long-term use.

Show that by actual measurement this instrument reaches more than 90% the efficient of patient, and twenty-twenty people's fork-like farm tool used in ancient China is said, has no side effect.

Claims (9)

1, is applicable to the vision correction instrument of preventing and treating pseudomyopia, it is by casing [1], optical imaging system, the inserted sheet device, mechanical transmission mechanism constitutes, bimirror tube [10] in the above-mentioned optical imaging system has low range convex lens [11] and is contained on the front apron [4] of casing [1] of the present utility model being characterised in that:

1.) light source in the above-mentioned optical imaging system adopts natural light, be in the translucent material of backboard [5] employing at front apron [4] relative position place to make,

2.) above-mentioned inserted sheet device comprises slide unit, and support unit and stereotome, support unit are contained on the slide unit, stereotome be contained on the support unit and with the bottom vertical of casing [1],

3.) above-mentioned mechanical transmission mechanism comprises backguy [9], knob backguy traction element, the backguy guiding parts, the slip limiting component, rolling member, the rolling guiding parts, backguy is contained on the knob backguy traction element and under the guiding of backguy guiding parts and links to each other with slide unit, backguy guiding parts and slip limiting component are contained on the base plate [3] of casing [1], slide unit moves down the spacing of slip limiting component, refilled rolling member on slide unit, and be shaped on the rolling guiding parts on the base plate [3] of casing [1], rolling member rolls along the rolling guiding parts.

According to the vision correction instrument described in the claim 1, it is characterized in that 2, above-mentioned trnaslucent materials is clouded glass or translucent plastic.

3, according to the vision correction instrument described in claim 1 or 2, it is characterized in that, above-mentioned knob backguy traction element is contained on the right baffle plate ［ 7 ］, it comprises a circular knob ［ 12 ］ that is contained in right baffle plate ［ 7 ］ outside, one is contained in inboard circular cable quadrant ［ 13 ］ and constitutes dismountable fixedlying connected with circular knob ［ 12 ］, on the periphery of cable quadrant ［ 13 ］, have and circularize unfolded groove ［ 14 ］, and on the side of cable quadrant ［ 13 ］, have binding post ［ 15 ］.

According to the vision correction instrument described in the claim 3, it is characterized in that 4, above-mentioned backguy guiding parts is the pulley ［ 16 ］ that is contained in the one-tenth distributed rectangular on the base plate.

5, according to the vision correction instrument described in the claim 4, it is characterized in that, above-mentioned slip limiting component is two limiting plates ［ 17 ］ that distribute in the longitudinal centre line 0-0 ' of base plate ［ 3 ］ lateral symmetry, above-mentioned slide unit is for being contained in the slide plate ［ 18 ］ between two limiting plates ［ 17 ］, and there are two stay blocks ［ 19 ］, ［ 20 ］ and two breach in slide plate ［ 18 ］ both sides.

6, according to the vision correction instrument described in the claim 5, it is characterized in that, above-mentioned slide unit is the steel ball ［ 26 ］ on four hemispheric concave surfaces ［ 25 ］ at place, four diagonal angles of the downside that is contained in above-mentioned slide plate ［ 18 ］, above-mentioned rolling guiding parts is the longitudinal fluting ［ 24 ］ that is positioned at the inboard place of limiting plate ［ 17 ］ on the base plate, and steel ball ［ 26 ］ rolls in longitudinal fluting ［ 24 ］.

7, according to the vision correction instrument described in the claim 6, it is characterized in that, above-mentioned support unit is one to be vertically mounted on the support ［ 21 ］ on the slide plate ［ 18 ］, respectively have a groove ［ 23 ］ on two vertical edge ［ 22 ］, stereotome embeds in the groove ［ 23 ］, on the loam cake ［ 2 ］ of casing luffer boards ［ 8 ］ is arranged.

According to the vision correction instrument described in the claim 3, it is characterized in that 8, the lateral surface of above-mentioned right baffle plate ［ 7 ］ is located near circular knob ［ 12 ］, have one group of scale ［ 27 ］ of measuring vision.

According to the vision correction instrument described in the claim 4 to 7 any one, it is characterized in that 9, the lateral surface of above-mentioned right baffle plate ［ 7 ］ is located near circular knob ［ 12 ］, have one group of scale ［ 27 ］ of measuring vision.

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