CN203987979U - Optometry Trial Device - Google Patents

Abstract

The utility model discloses an optometry trial device, which comprises a mirror frame, a crossbeam, mirror legs and a nose support assembly. The mirror frame is composed of a left mirror frame and a right mirror frame. The mirror leg includes a left mirror leg and a right mirror leg. The crossbeam is equipped with a loading mechanism for loading prescription lenses and can be moved and fixed along the axial direction of the crossbeam. The nose pad assembly is connected to the middle of the crossbeam and can be moved and fixed along the radial direction of the crossbeam. The upper part of the mirror legs is also connected with a scale for measuring the distance between the human eye and the trial lens; the left frame and the right frame are movably connected to the crossbeam and can be adjusted horizontally according to the pupil distance of the patient, and can be adapted to different patients through adjustment. The shape and size of the head and face, the nose pad assembly is movably connected to the beam to effectively support the mirror device on the bridge of the nose through longitudinal adjustment, the optometry scale can effectively measure the distance between the patient's eyes and the optometry lens, and improve Accuracy of measured diopters.

Description

Optometry Trial Device

technical field

The utility model relates to an ophthalmology detection instrument, in particular to an optometry and mirror test device.

Background technique

Eye diseases such as hyperopia, myopia, and amblyopia are common diseases, and the best way at present is to wear glasses. Optometry is to check the aggregation of light after it enters the eyeball. It uses the state of the emmetropic eye as a standard to measure the degree of convergence difference between the eye under test and the emmetropic eye. Optometry is the most basic, most commonly used but important method for optometry workers. work one. Optometry is mainly to check the deformation of the eyeball. Generally, two methods are used. One is to use an instrument to check the deformation of the eyeball. The prescription of eyeglasses worn to fit the patient with the right pair of glasses. An optometry trial device must be used during optometry. The existing optometry device generally includes a frame, temples and nose pads. The frame is composed of left and right frames that are left and right symmetrical and fixedly connected. The loading mechanism includes a left mirror leg hinged on the left side of the left mirror frame and a right mirror leg hinged on the right side of the right mirror frame, and the nose pad is arranged between the left mirror frame and the right mirror frame. When in use, the patient wears a trial lens device, and the diopter of both eyes of the patient is measured by changing the trial lenses of different diopters. However, due to the different shapes of the head and face of different patients, the generality of the existing optometry device is not strong. The image quality of the glasses is degraded, which may induce strabismus in severe cases; moreover, the existing optometry device cannot effectively measure the distance between the patient's eyes and the optometry lens, and this distance value can affect the accuracy of the measured diopter.

Therefore, it is necessary to improve the existing optometry device so that it can adapt to the shape of the head and face of different patients, enhance its versatility, adapt to the pupil distance of the patient, and effectively measure the distance between the patient's eyes and the trial lens. distance to ensure the imaging quality of the glasses prepared.

Utility model content

In view of this, the purpose of this utility model is to provide an optometry trial device, which can adapt to the shape of the head and face of different patients, enhance the versatility, and can adapt to the pupil distance of patients, and can effectively measure the patient's eyes and optometry lenses. The distance between them ensures the imaging quality of the glasses prepared.

The optometry device of the present utility model comprises a picture frame, a beam, a mirror leg and a nose pad assembly. The mirror frame is composed of a left mirror frame and a right mirror frame arranged symmetrically. The mirror leg and the right mirror leg hinged on the right side of the right mirror frame, the left mirror frame and the right mirror frame are connected to the beam and are equipped with a loading mechanism for loading prescription lenses and can be mounted along the axial direction of the beam Movement and fixation, the nose pad assembly is connected to the middle of the crossbeam and can move and fix along the radial direction of the crossbeam, and the position above the mirror legs of the left and right mirror frames is also connected with a Scale for the distance between the human eye and the prescription lens.

Further, the left picture frame and the right picture frame are provided with round holes, and the loading mechanism is arranged on both sides of the round holes and includes a fine adjustment mechanism on the front side of the picture frame and a coarse adjustment mechanism on the rear side of the picture frame. Adjustment mechanism, the coarse adjustment mechanism is a foot structure that can hold a piece of trial lens formed by the combination of two opposite blocks on the left and right, and the fine adjustment mechanism is formed by the combination of a set of opposite blocks on the left and right A foot structure capable of clamping three pieces of trial lenses, the block group is formed by three stacked blocks, and the block is in a "C" shape.

Further, the fine adjustment mechanism is arranged on the front side of the mirror frame through a rotatable adjustment wheel, and a dial engraved with the astigmatism axis scale value is set between the adjustment wheel and the side of the circular hole. One of the block sets of the mechanism is connected with metal arc strips, and the metal arc strips are bent in the direction of the superior arc formed by the two sets of block sets.

Further, the adjustment wheel is a gear structure, and the mirror frame is provided with an adjustment knob for meshing with the adjustment wheel, and the axial rotation of the adjustment knob drives the rotation of the adjustment wheel.

Further, the upper ends of the left mirror frame and the right mirror frame are inserted into the beam, and fastening screws are screwed in from the upper side of the mirror frame, so that the mirror frame is fixed on the beam.

Further, the nose support assembly includes an adjustment screw and a soft support connected to the lower end of the adjustment screw. The soft support has lateral elasticity and can be mounted on the nose bridge of a human body. The adjustment screw is screwed from the upper side of the beam In, so that the relative distance between the soft support and the beam is adjustable.

Further, the mirror leg includes a leg cover hinged with the frame and a leg rod that coaxially extends into the leg cover and can move axially. A positioning hole is provided on the outside of the leg cover, and a positioning screw is inserted from the positioning hole. The holes are screwed in so that the leg rod and the leg cover are relatively fixed.

Beneficial effects of the utility model: In the optometry and audition device of the utility model, the left frame and the right frame are movably connected on the crossbeam and can be adjusted horizontally according to the patient's interpupillary distance, and can adapt to the shape and size of the head and face of different patients through adjustment , the nose pad assembly is movably connected to the cross beam to effectively support the trial lens device on the bridge of the nose through longitudinal adjustment, and the optometry scale can effectively measure the distance between the patient's eyes and the optometry lens, improving the accuracy of the measured diopter. The imaging quality of the prepared glasses is ensured; the utility model has the advantages of simple structure, convenient use and strong popularization and application value.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the front view of the utility model;

Fig. 2 is a left view of the utility model.

Detailed ways

Fig. 1 is the front view of the present utility model, and Fig. 2 is the left view of the present utility model, as shown in the figure: the optometry mirror device of the present embodiment comprises picture frame, beam 1, mirror leg and nose support assembly, and described picture frame is made of The left mirror frame 21 and the right mirror frame 22 that left-right symmetrical arrangement are formed, and described mirror leg comprises the left mirror leg that is hinged on the left side of described left mirror frame 21 and the right mirror leg that is hinged on the right side of described right mirror frame 22, and described left mirror frame 21. The right spectacle frame 22 is connected to the beam 1 and is equipped with a loading mechanism for loading prescription lenses and can move and be fixed along the axial direction of the beam 1. The nose pad assembly is connected to the middle of the beam 1 And can be moved and fixed along the radial direction of the crossbeam 1, the position above the temples of the left frame 21 and the right frame 22 is also connected with a scale 9 for measuring the distance between the human eye and the trial lens This device has left-right symmetry property, so left picture frame 21, right picture frame 22 are relatively speaking, take the left and right in Fig. 1 as the criterion; After the appropriate size is formed, it is fixed to restrict its continued movement; the left frame 21 and the right frame 22 are movably connected to the beam 1 and can be adjusted horizontally according to the patient's interpupillary distance, and can adapt to the shape and size of the head and face of different patients through adjustment , the nose pad component is movably connected to the beam 1 to effectively support the mirror device on the bridge of the nose through longitudinal adjustment, the optometry scale 9 can effectively measure the distance between the patient's eyes and the optometry lens, and improve the accuracy of the measured diopter To guarantee the imaging quality of the prepared glasses.

In this embodiment, the left mirror frame 21 and the right mirror frame 22 are provided with round holes 8, and the loading mechanism is arranged on both sides of the round holes 8 and includes a fine adjustment mechanism arranged on the front side of the mirror frame and a The coarse adjustment mechanism on the rear side of the mirror frame, the coarse adjustment mechanism is a foot structure formed by a combination of two opposite blocks 4a on the left and right sides, which can clamp a piece of trial lens, and the fine adjustment mechanism is composed of a left and right set The seat structure that can clamp three pieces of trial lenses is formed by the combination of the opposite clamping block group 4b. The clamping block group 4b is formed by three stacked clamping blocks 4a, and the clamping block 4a is in the shape of "C"; the round hole 8 is a through hole for light transmission; the back side of the frame refers to the side close to the patient's eyeball during use; this trial lens device can try a piece of lens on the back side of the frame for rough adjustment of the diopter, and on the front side of the frame Trial fitting of three lenses is used for fine adjustment of the diopter to improve the accuracy of measurement.

In this embodiment, the fine adjustment mechanism is arranged on the front side of the mirror frame through a rotatable adjustment wheel 41, and a scale engraved with the astigmatism axis scale value is set between the adjustment wheel 41 and the side of the round hole 8 Disc 5, one of the block groups 4b of the fine adjustment mechanism is connected with a metal arc strip 42, and the metal arc strip 42 is bent to the direction of the superior arc formed by the two groups of block groups 4b; There are grooves on the circumference of the dial 5, and the difference between two adjacent grooves on the circumference is 5°, which is used to measure the axial position of astigmatism; Rotation is convenient for using the cylindrical lens to detect the axial position of astigmatism; the metal arc strip 42 can prevent the lens clamped on the fine adjustment mechanism from falling during the rotation.

In this embodiment, the adjustment wheel 41 is a gear structure, and the mirror frame is provided with an adjustment knob 61 for meshing with the adjustment wheel 41, and the axial rotation of the adjustment knob 61 drives the adjustment wheel 41 to rotate. ; The adjustment knob 61 and the adjustment wheel 41 form a gear transmission structure, which facilitates the rotation of the adjustment wheel 41 and enhances the controllability of the rotation.

In this embodiment, the upper ends of the left frame 21 and the right frame 22 are inserted into the beam 1, and the fastening screws 62 are screwed in from the upper side of the frame, so that the frame is fixed on the beam 1; Open fastening screw 62, picture frame (comprising picture frame 21, right picture frame 22) can move along crossbeam 1;

In this embodiment, the nose support assembly includes an adjustment screw 71 and a soft support 72 connected to the lower end of the adjustment screw 71. The soft support 72 has lateral elasticity and can be mounted on the nose bridge of a human body. The adjustment screw 71 Screw in from the upper side of the beam 1, so that the relative distance between the soft bracket 72 and the beam 1 is adjustable; the soft bracket 72 is made of flexible material, which can be deformed laterally to adapt to the structure of the bridge of the nose; and, the soft bracket 72 will not rotate with the rotation of the adjusting screw 71; the structure is simple, and the radial adjustment of the soft support 72 can be effectively realized.

In this embodiment, the mirror legs include a leg cover 31 hinged to the frame and a leg rod 32 extending coaxially into the leg cover 31 and moving axially, and positioning holes are provided on the outside of the leg cover 31 (not shown in the figure), the positioning screw 33 is screwed in from the positioning hole, so that the leg rod 32 is relatively fixed with the leg cover 31; the mirror leg is a telescopic structure, and the length of the mirror leg can be freely adjusted to further improve the device. The versatility; the set screw 33 forms a radial pressure on the leg rod 32, and the leg sleeve 31 and the leg rod 32 are fixed together.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (7)

1. an optometry glasses testing device, comprise picture frame, crossbeam, mirror lower limb and nose support assembly, described picture frame is made up of the left picture frame being symmetrical set and right picture frame, described mirror lower limb comprises the left mirror leg that is hinged on described left picture frame left side and the right mirror lower limb that is hinged on described right picture frame right side, it is characterized in that: described left picture frame, right picture frame is connected on described crossbeam and is equipped with the loader mechanism for loading optometry eyeglass and all can and fixes along the axially-movable of described crossbeam, described nose support assembly is connected to described crossbeam middle part and can and fixes along the radial motion of described crossbeam, described left picture frame, right picture frame be also connected with the rule for measuring distance between human eye and optometry eyeglass in the position above described mirror lower limb.

2. optometry glasses testing device according to claim 1, it is characterized in that: described left picture frame, right picture frame is equipped with circular hole, described loader mechanism is located at described circular hole both sides and is comprised the fine adjustment mechanism of being located at described picture frame front side and the coarse adjustment mechanism that is located at described picture frame rear side, the serve as reasons seat leg structure of clamped a slice optometry eyeglass that the relative fixture block of each a slice is combined to form around of described coarse adjustment mechanism, the described fine adjustment mechanism seat leg structure that clamps three optometry eyeglasses that each one group of relative fixture block group is combined to form around of serving as reasons, described fixture block group is formed by three stacking fixture blocks, described fixture block is " C " shape.

3. optometry glasses testing device according to claim 2, it is characterized in that: described fine adjustment mechanism is located at described picture frame front side by rotatable regulating wheel, the graduated disc that is carved with axis of astigmatism scale value is set between described regulating wheel and described circular hole side, described fine adjustment mechanism wherein described in one group, in fixture block group, be connected with metal arc slip, the major arc direction bending that described metal arc slip forms to fixture block group described in two groups.

4. optometry glasses testing device according to claim 3, is characterized in that: described regulating wheel is gear structure, described picture frame be provided with for the adjusting knob of described regulating wheel engaged transmission, the axial-rotation of described adjusting knob drives described regulating wheel rotation.

5. optometry glasses testing device according to claim 1, is characterized in that: described crossbeam is inserted in the upper end of described left picture frame, right picture frame, and trip bolt is screwed into from the upside of described picture frame, and described picture frame is fixed on described crossbeam.

6. optometry glasses testing device according to claim 1, it is characterized in that: described nose support assembly comprises adjusting screw(rod) and is connected to the soft holder of described adjusting screw(rod) lower end, described soft holder there is lateral elasticity and can frame on the human body bridge of the nose, described adjusting screw(rod) is screwed into from the upside of described crossbeam, makes the relative distance of described soft holder and described crossbeam adjustable.

7. optometry glasses testing device according to claim 1, it is characterized in that: described mirror lower limb comprises the lower limb hinged with described picture frame cover and coaxially stretches into described lower limb cover and can axially movable lower limb bar, the outside of described lower limb cover is provided with locating hole, dog screw is screwed into from described locating hole, makes described lower limb bar relative fixing with lower limb cover.