CN215348879U

CN215348879U - Multifunctional portable prism overturning racket

Info

Publication number: CN215348879U
Application number: CN202120034497.4U
Authority: CN
Inventors: 周丰超; 白戈; 于小博; 刘颖东
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-31
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to a multifunctional portable prism overturn racket. The multifunctional portable prism overturning bat comprises an upper prism of a right-angle triple prism and a lower prism of the right-angle triple prism, wherein the outer surface of the lower end of the upper prism is connected with the outer surface of the upper end of the lower prism, and the lower end of the lower prism is detachably connected with a handle piece; the multifunctional portable prism overturn racket has the advantages that the accuracy is obviously improved, the inspection speed is accelerated, the prism degree can be freely changed as required, and the multifunctional portable prism overturn racket is suitable for inspection habits of different inspectors.

Description

Multifunctional portable prism overturning racket

Technical Field

The utility model belongs to the technical field of visual training, and particularly relates to a multifunctional portable prism overturn racket.

Background

With the progress of society and the development of science and technology, the eye load of modern society is greater and greater. In clinical examination in ophthalmology, some groups of eyes have no organic lesion and no refractive problem, but complain about the symptoms of asthenopia after the eyes are seen for a long time, and further cause the eyes to be incapable of continuing working. This is a symptom of binocular vision abnormality.

The inspection of binocular vision abnormality mainly comprises perception inspection, accommodation inspection and vergence inspection. At present, the perception examination and the accommodation examination are more detailed in the industry, but in the aspect of vergence, the examination of occult, AC/A, close-point convergence and fusional vergence is focused in the industry, and the examination of vergence sensitivity, which refers to the sensitivity of eye divergence and convergence, is ignored. Although the vergence sensitivity is not generally listed as a routine examination, it is not even mentioned in some textbooks, instructional books. However, vergence sensitivity is not commonly used but essential as part of a complete binocular visual examination. The use of vergence sensitivity testing in foreign clinics has been in history for more than twenty years and many related studies have demonstrated its importance. The prism is an indispensable tool for the examination in the field of ophthalmology and ocular optics. The magnitude of the quantity is measured by the triangular prism, 1 triangular prism indicates that the light beam deviates 1cm at 1m and is recorded by 1PD or 1 Delta. Δ is used herein collectively to denote the unit of triangular prism degrees. The prisms are directional, and BI as used herein is an abbreviation for base in, i.e., the base of the prism faces horizontally inward with respect to the eye being measured; the BO used is the abbreviation of base out, i.e. the base of the prism is facing horizontally outwards with respect to the eye to be measured.

In some hospitals in China and some vision centers, some ophthalmologists or optometrists can select an insertable type flip-flop to match with a prism sheet in a test box to check the vergence sensitivity. The pluggable turnover racket is originally designed for sensitivity adjustment inspection, is applied to the aspect of scattered sensitivity inspection, and has some defects although materials are convenient to obtain: in clinical examination of vergence sensitivity, the prism flip-flop is required to be 12BO/3BI, and 2 groups of 2 triangular lenses which are the same are required to be combined into the specification due to the fact that the same lenses are required to be placed in front of two eyes at the same time in the pluggable flip-flop. However, the specifications of the triangular prism lens in the test case are as follows: 0.5 Δ, 1 Δ, 2 Δ, 3 Δ, 4 Δ, 5 Δ, 6 Δ, 7 Δ, 8 Δ, a prism lacking 1.5 Δ, i.e., a 3- Δ prism could not be obtained by combination, (in fact, few manufacturers are willing to produce a 1.5- Δ prism); only one prism sheet with 6 delta is arranged in the test mirror box, and a prism sheet with 12 delta cannot be obtained by combining a single test mirror box.

At present, in some hospitals and visual centers in the industry, two 2-delta triangular prisms are combined into a 4-delta triangular prism, two 6-delta triangular prisms in two test mirror boxes are combined into a 12-delta triangular prism, and a 12-delta BO/4-delta BI prism is used for examination. The pluggable flip-flop does not provide a substantially accurate check.

The triangular prism can provide visual displacement and has directivity. If there is a deviation from the horizontal direction during installation, the generated image displacement effect is substantially the horizontal component thereof, resulting in inaccurate examination results, thereby affecting clinical judgment. The pluggable flipping swatter used in the industry at present often has certain deviation from the horizontal direction during actual installation, thereby influencing clinical examination.

When the pluggable flipping camera passes the flipping inspection, an environment without any additional vergence stimulus is provided in the flipping process, so that the examinee can recover the fusion image at the moment. So it essentially checks as "divergent stimulus", "recovery of fusion", "collective stimulus", and so on. Because the fusion image can be recovered in the turning process, which is equivalent to providing a buffer in the checking process, the checking difficulty is reduced, and the result is higher.

In summary, the conventional prism flipping photography is not satisfactory for the use of doctors and patients.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a multifunctional portable prism overturn racket which is simple in structure and reasonable in design.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a multi-functional portable prism upset is clapped, includes the prism of putting down of the overhead prism of right angle prism and right angle prism, the lower extreme surface of the overhead prism is connected with the upper end surface of putting the prism down, the lower extreme of putting the prism down can be dismantled and is connected with the handle piece.

As a further optimization scheme of the utility model, the preparation materials of the upper prism and the lower prism are resin materials or glass materials;

as a further optimization scheme of the utility model, the upper prism is connected with the lower prism by glue;

as a further optimization scheme of the utility model, the upper prism is detachably connected with the lower prism;

as a further optimization scheme of the utility model, the end of the handle piece is fixedly connected with a connecting magnet, the middle part of the lower end face of the lower magnet is fixedly connected with a fixed magnet, and the connecting magnet and the fixed magnet attract each other;

as a further optimized scheme of the utility model, the side wall of the lower prism is connected with a side wall magnet, and the side wall magnet and the connecting magnet attract each other;

as a further optimization scheme of the utility model, a groove is formed in the lower end face of the upper prism, an upper magnet is adhered in the groove, a groove is also formed in the upper end face of the lower prism, a lower magnet is adhered in the groove of the lower prism, and the upper magnet and the lower magnet attract each other;

as a further optimized scheme of the present invention, the number of the upper magnets and the lower magnets is two, and the two sets of the upper magnets and the lower magnets are respectively connected to the one-third position and the two-third position of the upper prism or the lower prism.

As a further optimization scheme of the utility model, the number of degrees of the right-angle triangular prism is any one of 3 delta, 4 delta, 8 delta, 12 delta and 16 delta.

The utility model has the beneficial effects that:

(1) the device changes the binocular examination into the monocular examination, so that the BI or BO examination in the convergence and divergence sensitivity can be realized by only one prism, and the condition that the prisms with corresponding degrees cannot be obtained through combination is fundamentally avoided;

(2) this prism upset is clapped and is adopted magnetism to inhale the formula design to at two prism junctions, respectively use a magnet absorption on left side and right side, guaranteed the direction of prism and the absolute parallel of level to, consequently, this prism upset is clapped and can not lead to the error that causes by the installation, and has guaranteed the accuracy of inspection from this.

(3) The two prism blocks of the prism overturn beat are tightly connected, the 'divergent stimulation' is directly transited to the 'collective stimulation' in the whole checking process, the measured result is real and reliable, and the checking requirement of the convergent-divergent sensitivity is met.

(4) The prism overturning plate completes the inspection through vertical translation, and the inspection speed is improved compared with that of the inserting plate type overturning plate through overturning plate inspection. Since the vergence sensitivity indicates the number of cycles that the subject passes through within 1 minute, increasing the speed of examination means increasing the accuracy of examination.

(5) Freely changing the prism degree according to requirements: the prism flip-flop is used with a set of 3 Δ, 4 Δ, 8 Δ, 12 Δ, 16 Δ rectangular prism sheets, where 3 Δ, 4 Δ, 8 Δ has only two magnets at the bottom, and the other 8 Δ, 12 Δ, 16 Δ rectangular prism sheets have one magnet at the center of the bottom, two magnets at the top, and one magnet at the side (typically the thicker side). And owing to adopt magnetism to inhale the formula design, this prism upset is taken can simply provide different prism degree combinations fast, is fit for different inspection and scientific research environment.

(6) The prism overturning racket is suitable for the inspection habits of different inspectors, and the prism overturning racket can be respectively attached to a handheld rod through magnetic attraction on the bottom surface or the side surface, so that the inspectors with different habits can conveniently inspect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a depression structure of the present invention.

In the figure: 1. a prism is arranged on the upper portion; 2. a prism is arranged below; 3. a handle member; 4. connecting a magnet; 5. fixing a magnet; 6. a magnet is arranged below; 7. a magnet is arranged on the upper part; 8. a sidewall magnet.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1 and 2, a multifunctional portable prism flipping racket comprises an upper prism 1 of a right-angled prism and a lower prism 2 of the right-angled prism (in actual use, the corner of the right-angled prism is not prevented from scratching a user, and may be passivated or edge-cut to make the user be a right-angled trapezoid or a similar right-angled trapezoid, and the use in the right-angled trapezoid or the similar right-angled trapezoid is still the principle of the right-angled prism, so the shape is still the protection range of the application), the outer surface of the lower end of the upper prism 1 is connected with the outer surface of the upper end of the lower prism 2, and the lower end of the lower prism 2 is detachably connected with a handle 3.

The upper prism 1 and the lower prism 2 are made of resin materials or glass materials; the upper prism 1 and the lower prism 2 can be connected by glue or in a detachable connection mode, so that different PD values can be conveniently combined for use, when the detachable connection mode is adopted, specifically, a groove is formed in the lower end face of the upper prism 1, an upper magnet 7 is adhered in the groove, a groove is also formed in the upper end face of the lower prism 2, a lower magnet 6 is adhered in the groove of the lower prism 2, and the upper magnet 7 and the lower magnet 6 are mutually attracted; in order to improve the connection stability of the upper prism 1 and the lower prism 2, the number of the upper magnets 7 and the lower magnets 6 can be set to two groups, and the two groups are respectively connected to one third and two thirds positions of the upper prism 1 or the lower prism 2;

the end of the handle piece 3 is fixedly connected with a connecting magnet 4, the middle part of the lower end face of the lower magnet 6 is fixedly connected with a fixed magnet 5, and the connecting magnet 4 and the fixed magnet 5 attract each other; the side wall of the lower prism 2 is connected with a side wall magnet 8, the side wall magnet 8 can attract the connecting magnet 4, namely the end part of the handle piece 3 can be connected with the side wall magnet 8 in an adsorption manner, and the use habits of different doctors can be adapted conveniently.

It should be noted that, in the multifunctional portable prism flipping pat, in actual use, the side wall magnet 8 is generally installed on the left side of the lower prism 2, and in actual manufacturing, the upper triple prism is BI, and the lower is BO, the prism flipping pat of the present application is used with a set of right-angle prism sheets of 3 Δ, 4 Δ, 8 Δ, 12 Δ, and 16 Δ (PD of other values should be within the protection scope of the present application, the supporting right-angle prism sheet is the best PD value to use), wherein 3 Δ, 4 Δ, 8 Δ is only provided with two magnets at the bottom, and the other right-angle prism sheets of 8 Δ, 12 Δ, and 16 Δ are provided with one magnet at the center of the bottom, two magnets at the top, and one magnet at the side (generally thicker side), and in the present embodiment, the specific specifications of the triangular prism block are as follows: the length of the prism is 37mm, the width of the prism is 16mm, the thickness of the top is 4mm, and the thickness of the bottom is calculated according to the specifications and refractive indexes of different triangular prisms; in addition, a magnet arranged on the surface of the triangular prism block can be provided with a 1.1mm groove which is matched with the magnet for connection, and the adsorption magnets in the embodiment are all annular neodymium iron boron magnets; mounting 6mm x 1mm magnets at the centers of the bottoms of the 8 delta, 12 delta and 16 delta triangular prisms, respectively mounting 2 magnets of 4mm x 1mm at two trisection points of the tops, and mounting 6mm x 1mm magnets on the side surfaces; the 3 Δ and 4 Δ triangular prism blocks are only provided with 2 magnets of 4mm x 1mm at the bottom.

The connection mode of the upper prism 1 and the lower prism 2 in the patent also comprises a fixed connection mode, namely the triple prism overturning racket can be integrally produced by using a die pouring mode.

The specific use method of the device is to check how many cycles a test subject can pass in 1 minute: the method comprises the steps of placing a longitudinal sighting target in front of the eye of a detected person, after the detected person can see clearly, firstly placing a BI prism in front of the eye of the detected person, ordering the prism to become a clear single sighting target and then reporting, immediately enabling an inspector to turn over the prism to translate upwards after the report is received, enabling the observer to restore the vision target to be clear and single, then enabling the prism to turn over and translate downwards after the observation target is reported to be clear and single, repeating the steps in such a circulating way, immediately stopping the operation within 1 minute, obtaining the number of cycles passed by the detected person within 1 minute, and recording the unit as cpm, wherein 10 cycles can pass through within 1 minute is represented by 10cpm if the unit is 10 cpm. When using 12BO/3BI, the normal values are: 15. + -. 3 cpm.

The device has the advantages that the accuracy is obviously improved, the inspection speed is accelerated, the prism degree can be freely changed according to requirements, and the device is suitable for inspection habits of different inspectors; because the inspection is finished before one eye, the inspection of BI or BO in the convergence sensitivity can be realized by only one prism respectively, and the condition that the prisms with corresponding degrees cannot be obtained through combination is fundamentally avoided. For example: the combination of two 1.5 delta triangular prisms which are originally needed is a 3 delta triangular prism, and the 3 delta triangular prism can be directly used for inspection. This prism upset is clapped adopts magnetism to inhale the formula design to at two prism junctions, respectively use a magnet absorption on left side and right side, guaranteed the direction of prism and the absolute parallel of level to, consequently, this prism upset is clapped does not have the error that the installation caused, and has guaranteed the accuracy of inspection from this. Two prism blocks of the prism overturning beat are tightly connected, the 'divergent stimulation' is directly transited to 'collective stimulation' in the whole checking process, the measured result is real and reliable, and the requirement of the convergent-divergent sensitivity is met. This prism upset is clapped and is accomplished the inspection through translation from top to bottom, compares in can insert the piece formula upset clapping and pass through the upset and clap the inspection, has promoted inspection speed. Since the vergence sensitivity indicates the number of cycles that the subject passes through within 1 minute, increasing the speed of examination means increasing the accuracy of examination. Freely changing the prism degree according to the requirement: the prism flip-flop is used with a set of 3 Δ, 4 Δ, 8 Δ, 12 Δ, 16 Δ rectangular prism sheets, where 3 Δ, 4 Δ, 8 Δ has only two magnets at the bottom, and the other 8 Δ, 12 Δ, 16 Δ rectangular prism sheets have one magnet at the center of the bottom, two magnets at the top, and one magnet at the side (typically the thicker side). And owing to adopt magnetism to inhale the formula design, this prism upset is taken can simply provide different prism degree combinations fast, is fit for different inspection and scientific research environment. The examination habit of different examiners is adapted: the prism overturn racket can be respectively attached to a handheld rod through magnetic attraction on the bottom surface or the side surface, so that inspectors with different habits can conveniently inspect.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a multi-functional portable prism upset is clapped, its characterized in that, including the prism of putting on the prism of right angle prism and the prism of putting down of right angle prism, the lower extreme surface of putting on the prism is connected with the upper end surface of putting the prism down, the lower extreme of putting the prism down can be dismantled and be connected with handle spare.

2. The multifunctional portable prism flipping bat of claim 1, wherein: the upper prism and the lower prism are made of resin materials or glass materials.

3. A multi-functional portable prism inverting bat of claim 2 wherein: the upper prism is connected with the lower prism through glue.

4. A multi-functional portable prism inverting bat of claim 2 wherein: the upper prism is detachably connected with the lower prism.

5. The multifunctional portable prism flipping swatter according to claim 4, wherein: the end of the handle piece is fixedly connected with a connecting magnet, the upper end face of the lower prism is provided with a groove, the lower magnet is adhered in the groove of the lower prism, the middle of the lower end face of the lower magnet is fixedly connected with a fixing magnet, and the connecting magnet and the fixing magnet attract each other.

6. The multifunctional portable prism flipping bat of claim 5, wherein: the lateral wall of the lower prism is connected with a lateral wall magnet, and the lateral wall magnet and the connecting magnet attract each other.

7. The multifunctional portable prism flipping swatter according to claim 6, wherein: the lower end face of the upper prism is provided with a groove, an upper magnet is adhered in the groove, and the upper magnet and the lower magnet attract each other.

8. The multifunctional portable prism flipping swatter according to claim 7, wherein: the number of the upper magnets and the lower magnets is two, and the upper magnets and the lower magnets are respectively connected to one third and two thirds positions of the upper prism or the lower prism.

9. The multifunctional portable prism flipping bat of claim 1, wherein: the right-angle triangular prism has any one of 3 delta, 4 delta, 8 delta, 12 delta and 16 delta.