CN210643996U - Trial frame - Google Patents

Abstract

The utility model provides a trial frame, it includes two lens circles, the crossbeam, the mirror leg, the removable nose of different models holds in the palm, relative pupil height and the joint measurement leg cover of glasses eye distance have relative pupil height scale and glasses eye distance scale and connect in mirror leg assigned position, relative pupil height scale is levelled with the center of mirror circle in the direction with the center of glasses eye distance joint measurement leg cover when connecting in the mirror leg relative pupil height, relative pupil height scale is used for measuring the height of pupil relative to the centre of trial frame mirror circle when the user wears, glasses eye distance scale is levelled with the mirror leg assigned position in the direction when relative pupil height and glasses eye distance joint measurement leg cover connect in the mirror leg. The trial frame has the function of measuring the relative height of the pupils and the distance between the eyes of the spectacles, and the corresponding model nose pads are replaced according to measurement to adjust the relative height of the pupils and the distance between the eyes of the spectacles, so that accurate trial wearing is realized. The light structure and the wider visual field make the try-on more comfortable.

Description

Trial frame

Technical Field

The utility model relates to a look optical technology field, and in particular to trial frame.

Background

With the acceleration of life rhythm, people use eyes increasingly more strongly, and myopia patients gradually increase. Higher eye demands are increasingly demanding precise fitting.

In the optometry link, the fitting process is particularly critical. The try-on is close to the actual wearing condition, and the fitting degree is often determined. If unclear or uncomfortable conditions occur during the fitting process, the condition can be checked or adjusted again. However, most of the prior trial frame is heavy, faces are clamped, and noses are pressed, so that the optical effect is not discussed, and the poor basic experience is difficult for people to easily try on. In terms of optical effects, such trial frames have the following problems: the insert is easy to loose and rotate, the accurate lens eye distance and the relative pupil height (the distance between the pupil and the optical center of the insert in the vertical direction) cannot be guaranteed, the distance between the inner layer insert and the secondary inner layer insert is too large, the inclination angle is not standard, the visual field of a lens is too small, the optical centers of a plurality of inserts are difficult to be guaranteed to be on the same horizontal line, and the like.

There is an improved trial frame (patent No. CN1508053), in which although the existing full circle lens ring is optimized and improved to be a semicircular lens ring, the above problems still exist, and the distance between eyes and the height of pupil cannot be detected and adjusted for different trial wearers, and the situation that the insert is squeezed out often occurs in the trial frame during the use process.

Therefore, the existing trial frame needs to be improved to reduce the weight and the thickness of the trial frame, improve the comfort of the nose pad and obtain accurate relative pupil height and eye distance parameters under the condition of ensuring the rigidity of the frame.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above-described state of the art. An object of the utility model is to provide a try on mirror frame has the function of measuring pupil relative height and mirror eye distance to thereby change according to the measurement and adjust pupil relative height and mirror eye distance and realize accurate trying on with the nose support of corresponding model.

The utility model provides a trial frame, it includes two lens circles, crossbeam, two mirror legs, the removable nose of a plurality of different models holds in the palm and the joint measurement leg cover of relative pupil height and eye distance, the crossbeam is connected two lens circles, two mirror legs install in one-to-one in two lens circles, relative pupil height and eye distance joint measurement leg cover have relative pupil height scale and eye distance scale and connect in the assigned position of mirror leg, when relative pupil height and eye distance joint measurement leg cover connect in the mirror leg, the specific scale mark of relative pupil height scale flushes with the center of mirror circle in the direction of height, relative pupil height scale is used for measuring the height of pupil relative to the center of trial frame circle when the user wears, when relative pupil height and eye distance joint measurement leg cover connect in the mirror leg, the specific scale mark of eye distance scale flushes with the mirror leg assigned position direction, the eye distance scales are used for measuring the eye distance when a user wears the glasses, and the replaceable nose pads of different types can be mounted on the cross beam according to different measuring results of the relative pupil height and the eye distance combined measuring leg sleeve.

Preferably, the mirror ring is provided with a plug-in piece slot, and the appointed position of the mirror leg is 12mm away from the plug-in piece slot at the rearmost side in the front-back direction of the trial frame.

Preferably, any one of a plurality of different models of the replaceable nose pads can be mounted to the cross member, the plurality of different models of the replaceable nose pads having different heights and depths, so that when a specific replaceable nose pad is used, a front pupil vertex of a wearer is flush with the specific graduation line of the relative pupil height graduation in the height direction and is flush with the specific graduation line of the eye distance graduation in the front-back direction.

Preferably, the replaceable nose pad comprises a nose pad body and a connecting body which are connected together, the beam is provided with a nose pad slot, and the connecting body can be inserted into the nose pad slot.

Preferably, the mirror circle has the inserted sheet slot, the inserted sheet slot is located the front side of mirror circle, the trial frame includes the inserted sheet bracket, the inserted sheet slot form in the inserted sheet bracket, the inserted sheet bracket includes bracket and shell fragment, the bracket with the shell fragment forms at least two the inserted sheet slot, the shell fragment has two at least recesses, the shell fragment can warp under the effect of external force and make the notch expansion or the shrink of at least one of two recesses, thereby make the inserted sheet be in the bracket with press from both sides tightly or throw off between the shell fragment.

Preferably, the mirror ring comprises a thick ring part and a thin ring part, wherein the thick ring part is thicker than the thin ring part, and the thick ring part is provided with a scale of the direction of the inserting sheet.

Preferably, the lens ring is made of an aluminum magnesium alloy material, the glasses legs are made of a TR90 material, and the leg sleeve for jointly measuring the relative pupil height and the distance between eyes is made of transparent silica gel or a transparent TR90 material.

Preferably, the trial frame has an anteversion angle of 10 to 15 degrees.

Preferably, the replaceable nose pad comprises a nose pad body and a connecting clip connected together, the connecting clip clamping the cross beam so as to be mounted on the cross beam.

The trial frame provided by the present disclosure has at least the following beneficial effects:

the trial frame has the function of measuring the relative height of the pupils and the distance between the eyes of the spectacles, and the relative height of the pupils and the distance between the eyes of the spectacles are adjusted by replacing the nose pads of the corresponding models according to measurement, so that accurate trial wearing is realized. Light structure, wider field of vision let try on more comfortable, also provide good support for accurate try on from the side.

This openly is high through setting up relative pupil and the eye distance joint measurement leg cover thereby judges the relative pupil height condition and the eye distance condition of trying the person of wearing, for trying the relative pupil height adjustment and the eye distance adjustment in-process of wearing and provide the basis. Not only can judge the relative pupil height condition and the eye distance condition, but also can change the nose support according to the judgment result so as to make proper adjustment.

The trial frame provided by the present disclosure may also have the following beneficial effects:

the thin circle portion has guaranteed the bulk strength of mirror circle on the one hand, and on the other hand has reduced the whole weight of mirror circle, and the condition that the inserted sheet was extruded when the trial-on-the-mirror frame was placed to the level can not appear.

The lower part of the lens ring is a thin ring part, so that the influence on the visual field can be reduced, and the visual field is wider particularly when the lens ring is seen close.

The lens ring is made of aluminum-magnesium alloy material, and the glasses legs are made of TR90 material, so that the whole weight of the lens ring can be reduced.

Each inserting sheet slot is formed on the bracket and the elastic sheet, so that the optical centers of the inserting sheets can be ensured to be on the same horizontal line.

The trial frame has a forward inclination angle of 10 degrees to 15 degrees, so that the trial frame can meet both the requirements of far vision and near vision.

Drawings

Fig. 1 is a perspective view of a first perspective view of one embodiment of a trial frame provided by the present disclosure.

Fig. 2 is a perspective view of the trial frame of fig. 1 from a second viewing angle.

Fig. 3 shows the relative pupil height and eye distance jointly measured leg cuff attachment to the temple.

Fig. 4 is a schematic view of the relative pupil height and eye distance joint measurement leg cuffs of the trial frame of fig. 1.

Fig. 5 is a schematic view of the interchangeable nosepiece of the trial frame of fig. 1.

Description of reference numerals:

1 lens ring, 11 thick ring part, 12 thin ring part, 10 insert piece direction scales, 21 brackets, 22 elastic pieces, 3 glasses legs, 4 cross beams, 5 replaceable nose supports, 51 support bodies, 52 support rods, 53 connecting clamps, 8 relative pupil height and eye distance combined measuring leg sleeves, 8a eye distance marking line, 8b relative pupil height marking line, 81 connecting area, 82 reading area and 9 marks;

l front-back direction, H height direction.

Detailed Description

As shown in fig. 1-3, the present disclosure provides a trial frame, which includes two rims, an insert bracket, a cross beam, temples, different types of replaceable nose pads, a hinge, a relative pupil height and an eye distance joint measurement leg sleeve.

Defining a trial frame to have a front-back direction L and a height direction H, wherein the front-back direction L of the trial frame refers to a direction close to and away from human eyes along the front-back direction of the human body, and takes one side closer to the human eyes as 'back' and one side farther away from the human eyes as 'front'; the height direction H of the trial frame is the height direction H when the trial frame is worn on the human body. "radially outward" is defined as radially outward of the rim 1.

The lens ring 1 includes a thick ring portion 11 and a thin ring portion 12, and the thick ring portion 11 is thicker than the thin ring portion 12. The thick ring part 11 is positioned at the upper part of the lens ring 1, and the thin ring part 12 is positioned at the lower part of the lens ring 1. The thick collar portion 11 has the prior art trial frame insert orientation scale 10. The inserted sheet direction scale 10 is located thick circle portion 11, saves the scale carousel, is favorable to alleviateing the weight of trial run frame.

The thick ring part 11 can occupy the range of 180 degrees to 200 degrees in the circumferential direction, so that the whole weight of the trial frame is reduced, and sufficient arrangement space is provided for the inserting piece direction scale 10.

For example, the tab direction scale 10 may be, for example, from 0 degrees to 180 degrees, between the two ends of the bold portion 11, and the bracket 21 and the spring 22 (described in detail later) of the tab holder are located at the two ends of the bold portion 11.

The lens ring 1 can be processed in the following way: firstly, a circular lens ring 1 is molded, then the molded lens ring 1 is painted, and then the front surface and the top of a thick ring part 11 are plated with insert piece direction scales 10 (comprising scale marks and scale values). After the inserting sheet is inserted and the direction of the inserting sheet is required to be adjusted, the direction of the inserting sheet is adjusted according to the inserting sheet direction scales 10 of the thick ring part 11, and the mark line on the inserting sheet is aligned to the scale line in the required direction.

The thin ring part 12 ensures the whole strength of the lens ring 1 on one hand and reduces the whole weight of the lens ring 1 on the other hand. In addition, the lens ring 1 can be made of aluminum magnesium alloy material, which can also reduce the whole weight of the lens ring 1.

The lower part of the lens ring 1 is provided with the thin ring part 12, so that the influence on the visual field can be reduced, and particularly the near visual field of the trial frame is wider.

The inserting sheet bracket comprises a bracket 21 and an elastic sheet 22, and the bracket 21 and the elastic sheet 22 are both provided with inserting sheet slots. The bracket 21 and the elastic piece 22 may be respectively located at symmetrical positions on both sides of a center line of the scope ring 1 in the height direction H, and may be respectively connected to both ends of the thick ring portion 11, for example, the bracket 21 is located on the temporal side of the scope ring 1, and the elastic piece 22 is located on the nasal side of the scope ring 1. The tab insertion slots of the bracket 21 and the resilient tab 22 are disposed substantially opposite to each other so that the tabs can be supported between the bracket 21 and the resilient tab 22.

The straight distance between the bracket 21 and the elastic piece 22 of the same mirror ring 1 can be smaller than the diameter of the mirror ring 1, thereby stably supporting the insertion piece.

The bracket 21 and the elastic piece 22 are formed on a part of the rim 1, such as the end of the thick ring part 11, and thus have a smaller length, reducing the influence on the visual field.

In other embodiments, the bracket 21 and the spring piece 22 may be located at other positions of the rim 1, and are not limited to the end of the thick ring portion 11.

The tab insertion slot may be formed in an arc shape. When the insert is not inserted, the insert slot positioned in the elastic sheet 22 is slightly closed to the inner part of the mirror ring 1; when the insert is inserted, the insert slot on the elastic sheet 22 and the lens ring 1 are located on the same circumference. In this way, the insert can be clamped more firmly by a greater spring force.

Each bracket 21 and the elastic sheet 22 of the trial frame can be provided with two inserting sheet slots, the two inserting sheet slots are arranged along the front-back direction L of the trial frame, the two inserting sheet slots extend along two arc-shaped tracks, and the circle centers of the two arc-shaped tracks are arranged along the front-back direction of the mirror ring 1. The cross-section of the arc-shaped trajectory is shown in the figure.

Two inserted sheet slots can all be located the front side of mirror circle 1, and like this, the inserted sheet is farther from eyes, can avoid eyes evaporation vapor to blur the inserted sheet or make up on the eyelashes dirty inserted sheet, and the structure is simpler moreover, more convenient production.

Of course, in other embodiments, the trial frame may also have more than two sets of tab slots, such as three, four, five, etc. tab slots.

The resilient tab 22 is deformable under an external force so that the tab can be released or gripped by operating the resilient tab 22. Specifically, the elastic piece 22 may have an N shape and have two grooves, the bracket 21 and the elastic piece 22 form two insertion slot, the elastic piece 22 can deform under the action of external force to expand or contract the notch of at least one of the two grooves, and the N-shaped elastic piece 22 has better elastic deformation capability.

The spring 22 may also be shaped so as to have more than two grooves.

The spring 22 has a fixed end and a free end with a spring body between them. The fixed end is fixed on the lens ring 1, and the free end is used for driving the elastic sheet body to deform under the action of external force. The inserted sheet slot can be close to the outside opening that the free end formed and towards the shell fragment body.

When the free end of the elastic sheet 22 is pressed radially outwards, the insert slot positioned on the bracket 21 and the insert slot positioned on the elastic sheet 22 are far away from each other; when the free end of the elastic sheet 22 is released, the tab insertion groove of the bracket 21 and the tab insertion groove of the elastic sheet 22 are close to each other.

Since the insert slots are formed in the bracket 21 and the elastic piece 22, the optical centers of the inserts can be ensured to be on the same horizontal line. The inserted sheet slot is simple in structure and beneficial to light weight of the trial frame.

In the present embodiment, the tab holder includes the holder 21 and the spring piece 22 which are provided separately, but in another embodiment, the tab holder may be formed as an integral piece, or may be formed as a plurality of parts which are provided separately, or the like.

As shown in fig. 4, the trial frame may also have a relative pupil height and eye distance joint measurement leg cuff 8, the relative pupil height and eye distance joint measurement leg cuff 8 being attached to the temple 3. The relative pupil height and eye distance joint measurement leg sleeve 8 can be made of transparent soft material with excellent optical performance. The relative pupil height and eye distance joint measurement leg sleeve 8 can be provided with a hanging buckle, and the glasses legs 3 can pass through the hanging buckle, so that the relative pupil height and eye distance joint measurement leg sleeve 8 can be hung on the glasses legs 3.

The upper part of the relative pupil height and eye distance joint measurement leg cuff 8 may be a connection zone 81 for forming a hook. The lower part of the leg sleeve 8, which measures the relative pupil height in combination with the eye distance, may be a reading area 82 for setting a scale.

In other embodiments, the relative pupil height and eye distance joint measurement leg sleeve 8 may also be connected with the temple 3 by other means, for example, the relative pupil height and eye distance joint measurement leg sleeve 8 may have a hook, which can be hung on the temple 3, and the like.

The relative pupil height and the eye distance are jointly measured by the leg sleeve 8 to measure the eye distance and the relative pupil height. The relative pupil height and eye distance joint measurement leg sleeve 8 is provided with an eye distance scale 8a and a relative pupil height scale 8b, scale lines of the eye distance scale 8a are arranged along the front-back direction L, and scale lines of the relative pupil height scale 8b are arranged along the height direction H. The scale lines of the eye distance scale 8a and the opposite pupil height scale 8b may be arranged each at an interval of 1 mm. It is also possible to arrange the scale values of the eye distance scales 8a at intervals of 2mm and the scale values of the opposite pupil height scales 8b at intervals of 1 mm. The eye distance scale 8a and the relative pupil height scale 8b each have a zero scale.

A specific graduation mark, for example a zero graduation mark, of the relative pupil height graduation 8b is flush with the center of the mirror ring 1 in the height direction H of the trial frame, i.e. with the optical center of the insert sheet inserted into the mirror ring 1. In this way, whether the relative pupil height of the test wearer is within the standard range is determined by observing whether the anterior pupil apex of the test wearer is flush with the zero scale line of the relative pupil height scale 8 b.

A specific graduation mark of the eye distance graduation 8a, for example, a zero graduation mark, is spaced apart from the rearmost side of the tab insertion groove by, for example, 12mm in the front-rear direction L of the trial frame. Thus, whether the eye distance of the trial wearer is in the standard range is judged by observing whether the front top of the pupil of the trial wearer is flush with the zero scale line of the eye distance scale 8.

To facilitate installation of the relative pupil height and eye distance joint measurement leg sleeve 8, the temple 3 (e.g., the temporal side) may be provided with a temple score line spaced, for example, 12mm from the rearmost side of the insert pocket and painted for reading. Correspondingly, the relative pupil height and eye distance joint measurement leg sleeve 8 is provided with an identification reticle.

In this way, the identification score is aligned with the temple score when the relative pupil height and eye distance joint measurement leg sleeve 8 is installed.

In other embodiments, the relative pupil height and eye distance joint measurement leg cuff 8 may also be secured to the temple 3, measured in position prior to securement so that temple scribes do not have to be provided.

This is disclosed jointly measures leg cover 8 through setting up relative pupil height and eye distance thereby judges the relative pupil height condition and the eye distance condition of trying the person on, provides the basis for trying the relative pupil height adjustment and the eye distance adjustment of in-process.

When the adjustment is finished, the leg sleeve 8 can be jointly measured by the relative pupil height and the eye distance, so that the weight of the trial frame is reduced, the trial comfort is improved, the visual field can be increased, and the easier and real trial effect is obtained.

The relative pupil height and eye distance joint measurement leg sleeve 8 has horizontal scale lines and longitudinal scale lines, and the horizontal scale lines are scale lines of the eye distance scales 8a and are used for measuring the eye distance. The longitudinal graduation marks 8b are graduation marks of the relative pupil height graduation 8b, which are used to measure the relative pupil height. The central scale of the transverse scale mark and the longitudinal scale mark can be both 0, and the distance between the adjacent scales can be 1mm (which can be adjusted according to the precision). The intersection of the extension lines of the inter-ocular distance scale 8a and the relative pupil height scale 8b may be marked with a mark 9, such as a light colored small cross, for observation.

In other embodiments, the specific graduation line may be other than a zero graduation line.

The trial frame can also comprise a plurality of replaceable nose pads 5, the replaceable nose pads 5 have different depths and heights, and any replaceable nose pad 5 can be installed between the two lens rings 1. A cross beam 4 is arranged between the two lens rings 1, and the cross beam 4 is provided with a nose support slot arranged along the front-back direction L. The replaceable nose pad 5 may include a replaceable nose pad body and a connector connected together, the replaceable nose pad body being for contact with a nose of a trial wearer, the connector being for plugging with the nose pad slot. In this way the replaceable nose piece 5 is detachably connected to the cross member 4 so as to be replaceable.

In the cross section in the height direction H, the connecting body and the nose pad insertion groove may each have a linear cross sectional shape, and specifically, the connecting body may be a wide metal piece. The replaceable nose support body can comprise a support rod and a support body, the support body is connected with the lower end of the support rod, and the connecting body is connected with the upper end of the support rod. The connector can also be connected with a bulge so as to be convenient for plugging and unplugging.

In other embodiments, as shown in fig. 5, the connecting body of the replaceable nose pad 5 may be a connecting clip 53, the connecting clip 53 is integrally connected with the pad body 51 and the support rod 52, and the connecting clip 53 can clamp the cross beam 3 from the lower side of the cross beam 3 (or from other directions).

The replaceable nose piece 5 with the attachment clip 53 is easier to manufacture and avoids the need for slots in the cross member 4, which provides a better rigidity of the cross member 4.

The crossbeam 4 can be provided with a groove, the connecting clamp 53 of the replaceable nose support 5 is opened to clamp the groove of the crossbeam from bottom to top (to prevent the nose support from shaking left and right), and therefore the effect of replacing the nose supports of different models can be achieved.

When the trial frame leaves the factory, can install initial nose and hold in the palm between two mirror circles 1, the height and the degree of depth that initial nose held in the palm are the height and the degree of depth average value of a plurality of removable nose holds in the palm 5, are applicable to most people to reduce the change number of times in the trial-on process as far as possible. The height of each replaceable nose support 5 can be different by 1mm, and the depth of each replaceable nose support 5 can also be different by 1mm (corresponding adjustment can be made according to the precision requirement).

When the relative pupil height of the trial wearer is judged or the distance between the eyes is not within the standard range in the above manner, the relative pupil height or the distance between the eyes can be adjusted by replacing the replaceable nose pad 5, and finally the front vertex of the pupil of the trial wearer is flush with the specific scale line of the relative pupil height scale in the height direction H and flush with the specific scale line of the distance between the eyes in the front-back direction L.

Therefore, the trial frame provided by the disclosure can not only judge the relative pupil height condition and the lens-eye distance condition, but also make corresponding adjustment according to the judgment result.

The trial frame may include a plurality of cross beams 4. The plurality of cross beams 4 have different lengths, and any one of the cross beams 4 is detachably installed between the two lens rings 1, so that the trial frame has different interpupillary distances. The length of the beams 4 of different models can be different by 1mm so as to obtain higher test mirror precision.

In other embodiments, the trial frame may include a plurality of combinations including the replaceable nose pads 5, the cross beam 4, and the trial frame body (including the rim 1 and the temples 3), and the like, where the replaceable nose pads 5 in the plurality of combinations are of different models, and/or the cross beam 4 is of different models, and the replaceable nose pads 5 and/or the cross beam 4 are fixedly connected to the trial frame body. When one combination is not suitable for the wearer, the other combinations may be exchanged.

The fitting process using the trial frame is as follows: firstly, providing a trial frame provided with an initially replaceable nose pad 5 for a trial wearing person to try on; after the trial frame is comfortably placed, observing whether the front vertex of the pupil of the trial wearer is aligned with a zero scale line of the relative pupil height scale and a zero scale line of the distance scale of the spectacle eye; if not, the replaceable nose pad 5 is replaced until aligned; the insert can be inserted first into the rear insert and then into the front insert when the resilient tab 22 is pressed radially outward. If the orientation of the insert is desired, the insert must also be rotated to align the identification score line of the insert with the corresponding graduation mark of the insert orientation scale 10 of the bezel 1.

The trial frame may have an anteversion angle of 10 to 15 degrees, preferably 12 degrees, so that the trial frame can give consideration to both distance and near vision requirements.

The glasses legs 3 can be connected with the pile heads of the glasses rings 1 by adopting a spring plate structure like the glasses legs 3 of common glasses frames in the prior art, so that the glasses are more firm and durable while being worn moderately.

Thereby mirror leg 3 can adopt the physiology arc line molding to receive in the afterbody adduction, make or add the soft cover of establishing silica gel etc. with ear or temples side contact's position with for example silica gel material to promote the comfort level of wearing of mirror leg 3.

The temple 3 can have a curvature in the vicinity of the rim 1 that bulges outward to the trial frame, thus avoiding a possible face-pinching situation.

Temple 3 is preferably made of TR90 (plastic titanium) material so that the trial frame has less weight.

In other embodiments, the relative pupil height and eye distance can be adjusted by fine-tuning the replaceable nose piece 5 by turning a nut, or loosening the integral nose piece assembly and moving it into position and then securing it. But the production process is more complex and the whole structure is heavier.

In another embodiment, the insert with scales in the vertical direction is inserted into the insert slot, and the height of the pupil center is observed facing the horizontal direction of the try-on wearer, so that the relative pupil height is measured.

It should be understood that the above embodiments are exemplary only, and are not intended to limit the present invention. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of the present invention without departing from the scope thereof.

Claims (9)

1. The trial frame is characterized by comprising two lens rings (1), a cross beam (4), two glasses legs (3), a plurality of replaceable nose supports (5) of different models and a relative pupil height and eye distance joint measurement leg sleeve (8), wherein the cross beam (4) is connected with the two lens rings (1), the two glasses legs (3) are correspondingly arranged on the two lens rings (1), the relative pupil height and eye distance joint measurement leg sleeve (8) is provided with a relative pupil height scale and an eye distance scale and is connected to the appointed position of the glasses legs (3), when the relative pupil height and eye distance joint measurement leg sleeve (8) is connected to the glasses legs (3), the specific scale line of the relative pupil height scale is flush with the center of the lens rings (1) in the height direction (H), and the relative pupil height scale is used for measuring the height of the pupil relative to the center of the trial frame rings (1) when a user wears the trial frame, when the relative pupil height and eye distance combined measurement leg sleeve (8) is connected to the glasses legs (3), specific scale lines of the eye distance scales are flush with the appointed positions of the glasses legs (3) in the front-back direction (L) direction, the eye distance scales are used for measuring the eye distance when a user wears the glasses, and the replaceable nose pads (5) of different types can be installed on the cross beam (4) according to different measurement results of the relative pupil height and eye distance combined measurement leg sleeve (8).

2. Trial frame according to claim 1, wherein the rim (1) has a tab slot, the designated position of the temple (3) being 12mm from the tab slot on the rearmost side in the front-to-back direction (L) of the trial frame.

3. The trial frame according to claim 1, wherein any one of a plurality of different models of the interchangeable nose pads (5) can be mounted to the cross bar (4), the plurality of different models of the interchangeable nose pads (5) having different heights and depths such that when a particular interchangeable nose pad (5) is used, the anterior pupil apex of the trial is flush with the particular graduation mark of the relative pupil height graduation in the height direction (H) and flush with the particular graduation mark of the eye distance graduation in the front-to-back direction (L).

4. Trial frame according to claim 3, wherein the replaceable nose piece (5) comprises a nose piece body and a connecting body connected together, the cross bar (4) having a nose piece slot into which the connecting body can be inserted.

5. The trial frame according to claim 1, wherein the rim (1) has a tab slot located at the front side of the rim (1), the trial frame comprises a tab bracket (21), the tab slot is formed in the tab bracket (21), the tab bracket (21) comprises a bracket (21) and a resilient tab (22), the bracket (21) and the resilient tab (22) form at least two tab slots, the resilient tab (22) has at least two grooves, the resilient tab (22) can deform under the action of an external force to expand or contract the notch of at least one of the two grooves, so that the tab is clamped or released between the bracket (21) and the resilient tab (22).

6. The trial frame according to claim 1, wherein the rim (1) comprises a thick loop portion (11) and a thin loop portion (12), the thick loop portion (11) being thicker than the thin loop portion (12), the thick loop portion (11) having a tab direction scale.

7. The trial frame as claimed in claim 1, wherein the rim (1) is made of an aluminum magnesium alloy material, the temple (3) is made of a TR90 material, and the relative pupil height and eye distance joint measurement leg sleeve (8) is made of a clear silicone or a clear TR90 material.

8. The trial frame of claim 1, wherein the trial frame has an anteversion angle of 10 to 15 degrees.

9. Trial frame according to claim 3, wherein the replaceable nose piece (5) comprises a nose piece body and a connecting clip (53) connected together, the connecting clip (53) clipping the cross beam (4) to be mounted to the cross beam (4).

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