CN112773323B

CN112773323B - Cross hole lens and glasses test and measurement frame

Info

Publication number: CN112773323B
Application number: CN201911076579.9A
Authority: CN
Inventors: 林培任
Original assignee: Shanghai Sanlian Group Co ltd
Current assignee: Shanghai Sanlian Group Co ltd
Filing date: 2019-11-06
Publication date: 2024-06-28
Anticipated expiration: 2039-11-06

Abstract

A cross hole lens and eyeglass fitting measurement rack, the cross hole lens comprising: the lens comprises a lens body, wherein a pupil positioning hole is formed in the center of the lens body, a first slit and a second slit are formed in the lens body, and the first slit and the second slit are orthogonal at the pupil positioning hole; and the frame body is coated on the outer side of the lens body. The proposal provided by the invention can provide a novel test lens for optometry and an improved spectacle fitting measuring frame, and can measure the variation of the intra-ocular movement track of a tested person in a close range state.

Description

Cross hole lens and glasses test and measurement frame

Technical Field

The invention relates to the technical field of optometry and lens matching, in particular to a cross hole lens and an optometry and lens matching measuring frame.

Background

Glasses are a common vision correction product, and in order to accurately fit the glasses, optometry is often required. In order to obtain accurate refraction results, complex vision and optical problems are involved in the refraction process, and various visual parameters of human eyes.

However, the existing test lenses for optometry are very single, and can not realize measurement of various visual parameters of human eyes.

Disclosure of Invention

The invention solves the technical problem of providing a novel test lens for optometry and an eyeglass optometry measuring frame.

In order to solve the above technical problems, an embodiment of the present invention provides a lens with a cross hole, including: the lens comprises a lens body, wherein a pupil positioning hole is formed in the center of the lens body, a first slit and a second slit are formed in the lens body, and the first slit and the second slit are orthogonal at the pupil positioning hole; and the frame body is coated on the outer side of the lens body.

Optionally, the radius of the pupil positioning hole is 2.47 to 2.53 millimeters.

Optionally, the first and second slits each have a length of 13.95 to 14.05 millimeters.

Optionally, the first and second slits each have a width of 0.08 to 1.02 mm.

Optionally, the ends of the first and second slits are arc-shaped.

Optionally, the end has an arc radius of 0.48 to 0.52 mm.

Optionally, a peep hole is formed at an end of the first slit.

Optionally, the peephole has a radius of 1.48 to 1.52 millimeters.

Optionally, the lens body is opaque except for the pupil positioning aperture, the first slit, the second slit, and the peephole.

Optionally, one side of the frame body is provided with a handle part.

Optionally, the frame body is provided with a reference scale, and the reference scale corresponds to the first slit and the second slit respectively.

Optionally, the lens body is made of a light-tight resin material.

Optionally, the lens body is opaque except for the pupil positioning aperture, the first slit, and the second slit.

The embodiment of the invention also provides an eyeglass fitting measuring frame, which comprises: a main beam having opposite first and second ends; the nose pad assembly is connected to the main beam and is positioned between the first end and the second end of the main beam; the first glasses leg is connected to the first end of the main beam; the second glasses leg is connected to the second end of the main beam; the first lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, the first lens fixing frame is positioned between the nose support assembly and the first glasses leg, the transverse direction and the longitudinal direction are mutually perpendicular, and the transverse direction is parallel to the extending direction of the main beam from the first end to the second end; the second lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, and the second lens fixing frame is positioned between the nose support assembly and the second glasses leg; the cross Kong Jingpian is fixed to at least one of the first lens holder and the second lens holder.

Optionally, any one of the first lens fixing frame and the second lens fixing frame includes: the support part comprises a longitudinal adjusting part and a first transverse adjusting part, the first transverse adjusting part is connected with the main beam and can move along the transverse direction relative to the main beam, and the longitudinal adjusting part is connected with the first transverse adjusting part and moves along with the first transverse adjusting part; the lens bearing part is connected to the longitudinal adjusting part and is driven by the longitudinal adjusting part to move along the longitudinal direction.

Optionally, the nose pad assembly includes: extension arm, adjustment mechanism and nose hold in the palm, the extension arm connect in the girder and be located between the first end and the second end of girder, the nose hold in the palm through adjustment mechanism with the extension arm is connected, the nose holds in the palm have the contact surface with human nose contact, adjustment mechanism is used for adjusting the shape of the contact surface that the nose held in the palm.

Optionally, the glasses fitting measuring rack further includes: the rotary connecting piece, first mirror leg and second mirror leg pass through respectively the rotary connecting piece connect in the first end and the second end of girder, rotary connecting piece is used for driving the mirror leg and rotates in the angle within range of predetermineeing in the swivel plane, the mirror leg is any of first mirror leg and second mirror leg, swivel plane perpendicular to transverse direction.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

The embodiment of the invention provides a cross hole lens, which comprises: the lens comprises a lens body, wherein a pupil positioning hole is formed in the center of the lens body, a first slit and a second slit are formed in the lens body, and the first slit and the second slit are orthogonal at the pupil positioning hole; and the frame body is coated on the outer side of the lens body. Compared with the existing single lens for optometry, the embodiment provides a novel test lens for optometry, which can observe the condition of the cornea reflecting point at the central position of the pupil positioning hole, and if deviation exists, the first slit and the second slit can be used for quantitative adjustment of two dimensions, namely horizontal dimension and vertical dimension. Based on the above-mentioned adjusting base point, under the condition that the tested person makes a close-range operation, the change of the adduction degree of the visual axis is different from person to person due to the aggregation effect of the two eye axes, and the change of the intra-ocular track of the tested person in a close-range state can be measured by observing and adjusting the position of the cornea reflecting point in the lower peephole.

Further, an embodiment of the present invention further provides an eyeglass fitting measurement stand, including: a main beam having opposite first and second ends; the nose pad assembly is connected to the main beam and is positioned between the first end and the second end of the main beam; the first glasses leg is connected to the first end of the main beam; the second glasses leg is connected to the second end of the main beam; the first lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, the first lens fixing frame is positioned between the nose support assembly and the first glasses leg, the transverse direction and the longitudinal direction are mutually perpendicular, and the transverse direction is parallel to the extending direction of the main beam from the first end to the second end; the second lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, and the second lens fixing frame is positioned between the nose support assembly and the second glasses leg; the pinhole lens is fixed on at least one of the first lens fixing frame and the second lens fixing frame.

Compared with the existing optometry lens measuring frame, the embodiment scheme provides an improved spectacle optometry lens measuring frame, and various parameters of human eyes can be accurately and conveniently measured. Specifically, the first lens fixing frame and the second lens fixing frame can independently move left and right along the transverse direction on the main beam, and the positions of the left and right lenses can be flexibly adjusted in the optometry process, so that different parameters of human eyes can be measured.

Drawings

FIG. 1 is a schematic view of an eyeglass fitting measurement rack according to an embodiment of the present invention;

FIG. 2 is a front view of the eyeglass fitting measurement stand of FIG. 1;

FIG. 3 is a partial rear view of the first lens holder of FIG. 1;

FIG. 4 is a partial cross-sectional view of the main beam of FIG. 1;

FIG. 5 is an exploded view of the nose pad assembly of FIG. 1;

FIG. 6 is a partial cross-sectional view of the nose pad assembly of FIG. 1 in the area of attachment to the main beam;

FIG. 7 is a side view of the eyeglass fitting measurement rack of FIG. 1;

FIG. 8 is an exploded view of the temple and main beam attachment area of FIG. 1;

FIG. 9 is an exploded view of the other side of the temple and main beam attachment area of FIG. 1;

FIG. 10 is a schematic view of a first cross-hole lens according to an embodiment of the present invention;

FIG. 11 is a schematic view of a second cross-hole lens according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of the combination of the cross-hole lens of FIG. 10 with the lens fitting measurement frame of FIG. 1;

Fig. 13 is a schematic view of the combination of the cross-hole lens of fig. 11 and the lens fitting measurement frame of fig. 1.

Detailed Description

As to the background art, the structure and function of the existing test lens for optometry are single, and measurement of different parameters of human eyes during optometry cannot be satisfied.

The embodiment scheme provides a novel test lens for optometry, which can observe the condition of a cornea reflecting spot at the central position of a pupil positioning hole, and if deviation exists, the first slit and the second slit can be used for quantitative adjustment of two dimensions, namely horizontal dimension and vertical dimension. Based on the above-mentioned adjusting base point, under the condition that the tested person makes a close-range operation, the change of the adduction degree of the visual axis is different from person to person due to the aggregation effect of the two eye axes, and the change of the intra-ocular track of the tested person in a close-range state can be measured by observing and adjusting the position of the cornea reflecting point in the lower peephole.

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a schematic view of an eyeglass fitting measurement stand according to an embodiment of the present invention.

The glasses fitting measuring frame of the embodiment can be applied to a fitting scene, such as a fitting scene for configuring high-end optical lenses such as progressive multifocal lenses. The high-end optical lens refers to a dimensional configuration for realizing lens diopter by applying one or two free-form surfaces.

Specifically, referring to fig. 1, an eyeglass fitting measurement stand 1 according to the present embodiment may include: the main beam 10, the main beam 10 has opposite first and second ends 10a, 10b.

For convenience of description, the extending direction of the main beam 10 from the first end 10a to the second end 10b is referred to as a transverse direction (indicated by ± x in the drawing), and the directions perpendicular to the transverse direction (indicated by ± x in the drawing) are referred to as a longitudinal direction (indicated by ± z in the drawing) and a depth direction (± y in the drawing), respectively.

When the lateral direction (illustrated + -x direction) is a horizontal direction, the longitudinal direction (illustrated + -z direction) is a gravitational direction, and the depth direction (illustrated + -y direction) is perpendicular to a plane formed by the horizontal direction and the gravitational direction.

More specifically, the eyeglass fitting measurement rack 1 may further include: a nose pad assembly 11 is connected to the main beam 10 and is located between the first end 10a and the second end 10b of the main beam 10.

For example, the nose pad assembly 11 may be fixed at a midpoint of the main beam 10 in the lateral direction (illustrated ± x direction), i.e., the nose pad assembly 11 is equidistant from the first end 10a of the main beam 10 as the nose pad assembly 11 is equidistant from the second end 10b of the main beam 10.

The direction of extension of the nose pad assembly 11 may be generally parallel to the longitudinal direction (illustrated ± z direction).

One end of the nose pad assembly 11 along the extending direction can be fixed on the main beam 10, and during optometry, the free end of the nose pad assembly 11 can be contacted with the nose bridge so as to support the glasses optometry measuring frame 1 on the nose bridge of the tested person.

Further, the glasses fitting measuring rack 1 may further include: a first temple 12 connected to a first end 10a of the main beam 10; and a second temple 13 connected to the second end 10b of the main beam 10.

For example, either of the first and second temples 12 and 13 may be hinged to the main beam 10 and may be rotated about a hinge point with the main beam 10 in a plane formed by a lateral direction (illustrated + -x-direction) and a longitudinal direction (illustrated + -z-direction) to be switched between a closed position and an open position as illustrated in fig. 1.

At the time of optometry, the first and second temples 12 and 13 are respectively rotated about respective hinge points to the open positions shown in fig. 1, at which the extending directions of the first and second temples 12 and 13 are parallel to each other and the extending directions are parallel to the depth direction (illustrated ±y directions). When needed, the included angle between the extending direction of the glasses leg and the longitudinal direction (the direction of the figure + -z) can be adjusted to improve the comfort level of the glasses fitting measuring rack 1 worn on the face of the tested person, and at this time, the extending direction of the glasses leg is no longer parallel to the depth direction (the direction of the figure + -y).

Further, the eyeglass fitting measurement stand 1 maintained in the state shown in fig. 1 is worn on the face of the person to be tested, the ear hooks of the two temples are coupled to the corresponding ears, and the free ends of the nose pad assemblies 11 are supported on the nose bridge of the person to be tested.

The first and second temples 12 and 13 are respectively connected to two ends of the main beam 10 through a fixing portion, and the extending direction of the fixing portion is the longitudinal direction (in the drawing ± z direction).

For example, the fixing portion may include a second lateral adjustment member 17 and a third lateral adjustment member 18.

Further, the glasses fitting measuring rack 1 may further include: a first lens mount 14 connected to the main beam 10 and movable in a lateral direction (illustrated + -x-direction) and a longitudinal direction (illustrated + -z-direction), the first lens mount 14 being positionable between the nose pad assembly 11 and the first temple 12; a second lens holder 15 connected to the main beam 10 and movable in a lateral direction (x direction shown) and a longitudinal direction (z direction shown), the second lens holder 15 being positionable between the nose pad assembly 11 and the second temple 13.

For example, the first lens holder 14 and the second lens holder 15 may each be used to carry a lens (also referred to as a test strip). During optometry, by moving the first lens holder 14 and/or the second lens holder 15 in the ± x direction and the ± z direction, the difference in the pitch in the lateral direction (indicated by ± x direction) and the height in the longitudinal direction (indicated by ± z direction) of the lenses respectively carried on the two lens holders can be adjusted so that the positions of the lenses on both sides are adapted to the positions of both eyes of the person to be tested.

In one implementation, referring to fig. 1 and 2, either of the first lens mount 14 and the second lens mount 15 may comprise: a support part 140, the support part 140 may include a longitudinal adjustment part 141 and a first lateral adjustment part 142, the first lateral adjustment part 142 being connected to the girder 10 and movable in a lateral direction (illustrated + -x direction) with respect to the girder 10, the longitudinal adjustment part 141 being connected to the first lateral adjustment part 142 and moving with the first lateral adjustment part 142; the lens carrying part 143 may be connected to the longitudinal adjusting part 141, and is driven by the longitudinal adjusting part 141 to move along a longitudinal direction (in the drawing, ±z direction).

In one implementation, the support 140 may be inverted L-shaped, and the support 140 of the first lens mount 14 and the support 140 of the second lens mount 15 may be symmetrically disposed, and the axis of symmetry may be the nose pad assembly 11, from the perspective shown in fig. 2.

Specifically, for the support 140 of the first lens holder 14, the first lateral adjustment member 142 may be disposed below the main beam 10 in the-z direction and between the main beam 10 and the lens carrier 143, and an upper end of the longitudinal adjustment member 141 in the +z direction may be connected to an end of the first lateral adjustment member 142 in the lateral direction (±x direction) near the first temple 12.

Similarly, for the support 140 of the second lens holder 15, a first lateral adjustment member 142 may be disposed below the main beam 10 in the-z direction and between the main beam 10 and the lens carrier 143, and an upper end of the longitudinal adjustment member 141 in the +z direction may be connected to an end of the first lateral adjustment member 142 in the lateral direction (±x direction) near the second temple 13.

In one implementation, referring to fig. 3, the longitudinal adjustment portion 141 may include: a longitudinal support 144; a first screw 145, the first screw 145 being disposed on the longitudinal bracket 144 in a longitudinal direction (illustrated ±z directions); the first screw driving part 146 is screwed to the first screw 145, the first screw driving part 146 moves along the first screw 145 along with the rotation of the first screw 145, and the lens carrying part 143 is connected to the first screw driving part 146.

For example, the outer surface of the first screw 145 may have a trapezoidal thread (not shown), and the first screw driving portion 146 has an internal thread adapted so that the first screw driving portion 146 and the first screw 145 may achieve screw driving. By rotating the connected first knob 147, the first screw 145 rotates about its own axis, and the first screw transmission portion 146 moves up and down in the longitudinal direction (in the drawing, ±z direction) as the first screw 145 rotates, thereby driving the lens carrying portion 143 connected thereto to move up and down in the longitudinal direction (in the drawing, ±z direction).

In one implementation, the front side of the longitudinal support 144 in the-y direction may have graduations, as shown in fig. 2, to read the position of the lens carrier 143 in the longitudinal direction (illustrated ± z direction) during optometry. Accordingly, the front side of the lens carrier 143 in the-y direction may be provided with an indication arrow to indicate the current longitudinal position of the lens carrier 143. Wherein the front side in the-y direction may be the side facing the optometrist at the time of optometry.

In one implementation, with continued reference to FIG. 3, the longitudinal support 144 may include: a longitudinal bracket body 148 for supporting the first screw 145; the first limiting part 149 is disposed at one end or both ends of the longitudinal bracket body 148, and is used for limiting the movement stroke of the first screw transmission part 146 on the first screw 145.

In one embodiment, both ends of the longitudinal bracket body 148 in the longitudinal direction (in the drawing, ±z direction) may be provided with first fixing portions 150, respectively, to fix the first screw 145 to the longitudinal bracket body 148. The first fixing portions 150 may be provided with through holes (not shown) in a longitudinal direction (in the drawing, ±z direction), and the first screw 145 sequentially passes through the through holes of the respective first fixing portions 150 to fix the first screw 145 between the longitudinal bracket body 148 and the first fixing portions 150 while ensuring that the first screw 145 can rotate about its own axis.

Specifically, among the 2 first fixing portions 150 shown in fig. 3, the first fixing portion 150 disposed above in the +z direction may serve to prevent the first screw 145 from falling off from the longitudinal bracket body 148. For example, an end of the first screw 145, to which the first knob 147 is not connected, may be formed with a drop preventing portion 151, and the drop preventing portion 151 may have a larger diameter than a through hole of the first fixing portion 150 to ensure that the first screw 145 does not drop from the through hole.

Further, among the 2 first fixing parts 150 shown in fig. 3, the first fixing part 150 disposed below in the +z direction may serve to restrict the movement of the first screw 145 upward in the +z direction.

Further, at least one of the 2 first fixing portions 150 shown in fig. 3 may also integrate the function of the first stopper portion 149 to define the highest and lowest points of movement of the first screw driving portion 146 in the longitudinal direction (illustrated ±z directions). For example, the first fixing portion 150 disposed above in the +z direction may serve to limit the highest point of the movement of the first screw driving portion 146 in the +z direction.

Further, the first limiting portion 149 may be disposed at a middle portion of the longitudinal bracket body 148, such as the first limiting portion 149 located between the upper and lower first fixing portions 150 in fig. 3. Similar to the first fixing portion 150, the first limiting portion 149 may be provided with a through hole (not shown) along a longitudinal direction (in the drawing, ±z direction) for the first screw 145 to pass through, and the first screw driving portion 146 is limited to continue moving when it moves against the first limiting portion 149.

In the arrangement shown in fig. 3, a first stop 149 located in the middle of the longitudinal support body 148 may be used to limit the lowest point of movement of the first screw drive 146 in the-z direction.

In practical applications, the setting position of each first limiting portion 149 may be reasonably adjusted according to the allowed movement stroke of the first screw driving portion 146.

The arrangement of the longitudinal adjustment member 141 on the second lens holder 15 may refer to fig. 3 and the detailed description of the arrangement of the longitudinal adjustment member 141 on the first lens holder 14, which are not repeated herein.

In one implementation, referring to fig. 1-3, the lens carrier 143 can include: a hollow frame 152; a plurality of fastening portions 153 are disposed on the frame 152, and the fastening portions 153 are used for fixing a lens (not shown).

For example, a plurality of limiting grooves 154 may be formed in parallel in a depth direction (in the drawing, ±y direction) on a side of the fastening portion 153 facing the center of the frame portion 152, so as to fix a plurality of lenses at the same time.

For another example, the number of the fastening portions 153 provided on each lens carrying portion 143 may be 2, as shown in fig. 1.

In one implementation, with continued reference to fig. 1-3, the lens carrier 143 can further include: the elastic guiding portion 155 is disposed on the frame portion 152 and located on the same side of the frame portion 152 as the plurality of fastening portions 153, one end of the elastic guiding portion 155 is fixed to the frame portion 152, the other end of the elastic guiding portion 155 is a free end, and at least a portion of the elastic guiding portion 155 is arc-shaped.

For example, the end of the elastic guide 155 fixed to the frame 152 may extend to the catching portion 153 to accurately guide the lens to the catching portion 153 when the lens is mounted.

For another example, the free end of the resilient guide 155 may have a section that is parallel to the lateral direction (shown as + -x-direction) and the free end may be adjacent to the longitudinal support body 148 to act as a scale indicator to indicate the position of the lens carrier 143 in the longitudinal direction (shown as + -z-direction).

In one embodiment, the curvature of the arcuate portion of the resilient guide 155 may be adapted to the contour of the frame 152 for better guiding.

In one implementation, the elastic guide 155 and the fastening portion 153 may be disposed at a front side of the frame 152 in the-y direction.

In a variation, referring to fig. 3, when the lens carrier 143 is worn on the face of the person to be tested to perform optometry, a plurality of fastening portions 153 may be disposed on a side of the lens carrier 143 close to the face, and a plurality of limiting grooves (not shown) may be formed in parallel in a depth direction (in ± y directions in the drawing) on a side of each fastening portion 153 facing the center of the frame 152, so that the lens carrier 143 can simultaneously carry more lenses.

In one implementation, referring to fig. 4, the main beam 10 may include: a main beam body 100, the main beam body 100 being disposed in a transverse direction (illustrated ± x direction) and having opposed first and second ends 100a, 100b. Wherein the first end 100a of the main beam body 100 may correspond to the first end 10a of the main beam 10 and the second end 100b of the main beam body 100 may correspond to the second end 10b of the main beam 10.

For example, the main beam body 100 may be a sleeve, and a through hole communicating the first end 100a and the second end 100b is formed along a lateral direction (in the drawing, ±x direction).

Alternatively, to increase the rigidity, the portion of the middle section of the main beam body 100 connected to the nose pad assembly 11 may be solid, and the first end 100a and the second end 100b may be provided with through holes extending toward opposite ends, respectively.

Further, the main beam 10 may further include: a second screw 101, wherein the second screw 101 is disposed at one side of the main beam body 100 near the first end 100a along a lateral direction (illustrated ± x direction); the second screw driving part 102 is screwed to the second screw 101, the second screw driving part 102 moves along the second screw 101 along with the rotation of the second screw 101, and the first lens fixing frame 14 is connected with the second screw driving part 102.

For example, the second screw 101 and the second screw 102 screwed thereto may extend from the first end 100a into the hollow main beam body 100, and the second knob 103 connected to the second screw 101 may extend from the first end 100 a. The outer surface of the second screw 101 may have trapezoidal threads (not shown), and the second screw driving portion 102 has internal threads adapted to enable the second screw driving portion 102 and the second screw 101 to realize screw driving.

Specifically, the first lens holder 14 may be coupled to the second screw 102 via a first lateral adjustment member 142. For example, at least the first lateral adjustment member 142 and the second screw drive 102 may be integrally formed. Or the first lateral adjustment member 142 may be adhesively coupled to the second screw drive 102.

By rotating the second knob 103, the second screw 101 rotates about its own axis, and the second screw transmission portion 102 moves left and right in the lateral direction (illustrated ± x direction) with the rotation of the second screw 101, thereby driving the first lateral adjustment member 142 connected thereto to move left and right in the lateral direction (illustrated ± x direction).

Further, the main beam 10 may further include: a third screw 104, wherein the third screw 104 is disposed on one side of the main beam body 100 near the second end 100b along the transverse direction (in the drawing, ±x direction); and a third screw transmission part 105 screwed to the third screw 104, wherein the third screw transmission part 105 moves along the third screw 104 along with the rotation of the third screw 104, and the second lens fixing frame 15 is connected with the third screw transmission part 105.

For example, the third screw 104 and the third screw drive 105 threaded thereon may extend from the second end 100b into the hollow main beam body 100, and a third knob 106 coupled to the third screw 104 may extend from the second end 100 b. The outer surface of the third screw 104 may have trapezoidal threads (not shown), and the third screw driving portion 105 has internal threads adapted to enable the third screw driving portion 105 and the third screw 104 to realize screw driving.

Specifically, the second lens holder 15 may be connected to the third screw 105 via a first lateral adjustment member 142. For example, at least the first lateral adjustment member 142 and the third screw drive 105 may be integrally formed. Or the first lateral adjustment member 142 may be adhesively connected to the third screw drive 105.

By turning the third knob 106, the third screw 104 rotates about its own axis, and the third screw transmission portion 105 moves left and right in the lateral direction (indicated by ± x direction) with the rotation of the third screw 104, thereby driving the first lateral adjustment member 142 connected thereto to move left and right in the lateral direction (indicated by ± x direction).

In one implementation, referring to fig. 1,2 and 4, the main beam body 100 may have graduations thereon to read the position of the first lateral adjustment member 142 in the lateral direction (illustrated ± x direction). This position can be used to indicate the position of the lenses fixed on the first lens holder 14 and the second lens holder 15 in the lateral direction (illustrated ± x direction).

Further, the first lateral adjustment member 142 may be provided with an indicating block 174 for indicating the scale position of the first lateral adjustment member 142 on the main beam body 100.

In one implementation, with continued reference to fig. 4, the main beam 10 may further include: the second limiting part 107 is disposed on the main beam body 100, and the second limiting part 107 is located between the first end 100a of the main beam body 100 and the nose pad assembly 11, and is used for limiting the movement stroke of the second screw transmission part 102 on the second screw 101.

For example, the second limiting portion 107 may be disposed in the hollow main beam body 100, and a through hole is formed in the transverse direction (in the illustrated ± x direction) for the second screw 101 to pass through, so that the second screw driving portion 102 is limited to continue moving when it abuts against the second limiting portion 107.

In one implementation, the main beam body 100 may be provided with a second fixing portion 163 to fix the second screw 101 within the main beam body 100. For example, the second fixing portion 163 is provided with a through hole (not shown) along a transverse direction (in the ± x direction in the drawing), an end of the second screw 101 extending into the main beam body 100 is formed with a drop-preventing portion 109 after passing through the second fixing portion 163, and a diameter of the drop-preventing portion 109 may be larger than a diameter of the through hole of the second fixing portion 163, so as to ensure that the second screw 101 is not pulled out from the main beam body 100.

Further, the second fixing part 163 may integrate a limiting function of the second limiting part 107 to limit a maximum rightward movement stroke of the second screw driving part 102 in the +x direction.

Further, the second limiting portion 107 disposed between the first end 100a of the main beam body 100 and the second fixing portion 163 may be used to limit the maximum leftward movement stroke of the second screw driving portion 102 in the-x direction.

Similarly, the main beam 10 may further include: the third limiting portion 108 is disposed on the main beam body 100, and the third limiting portion 108 may be located between the second end 100b of the main beam body 100 and the nose pad assembly 11, and is used for limiting a movement stroke of the third screw transmission portion 105 on the third screw 104.

For example, the third limiting portion 108 may be disposed in the hollow main beam body 100, and a through hole (not shown) is formed along a transverse direction (in the drawing, ±x direction) for the third screw 104 to pass through, so that the third screw driving portion 105 is limited to continue moving when it abuts against the third limiting portion 108.

In one implementation, the main beam body 100 may be provided with a third securing portion 164 to secure the third screw 104 within the main beam body 100. For example, the third fixing portion 164 is provided with a through hole (not shown) along a transverse direction (in the ± x direction in the drawing), an end of the third screw 104 extending into the main beam body 100 is formed with a drop-preventing portion 109 after passing through the third fixing portion 164, and a diameter of the drop-preventing portion 109 may be larger than a diameter of the through hole of the third fixing portion 164, so as to ensure that the third screw 104 is not pulled out from the main beam body 100.

Further, the third fixing portion 164 may integrate a limiting function of the third limiting portion 108 to define a maximum leftward movement stroke of the third screw driving portion 105 in the-x direction.

Further, the third limiting portion 108 disposed between the second end 100b of the main beam body 100 and the third fixing portion 164 may be used to limit the maximum rightward movement stroke of the third screw driving portion 105 along the +x direction.

In one embodiment, referring to fig. 4, a groove (not shown) communicating with the hollow region of the main girder body 100 may be formed at a lower end of the main girder body 100 in the-z direction, and an extension direction of the groove may be parallel to a lateral direction (illustrated ± x direction). Further, the second screw 102 within the main beam body 100 may extend out of the main beam body 100 from the slot body to connect with a corresponding first lateral adjustment 142 located below the main beam body 100 in the-z direction. Similarly, the third screw drive 105 within the main beam body 100 may extend from the channel body out of the main beam body 100 to connect with a corresponding first lateral adjustment member 142 located below the main beam body 100 in the-z direction. Therefore, the groove body can also play a limiting role, and the screw motion of the screw rod can be effectively converted into transverse motion.

In one implementation, referring to fig. 5 and 6, the nose pad assembly 11 may include: an extension arm 183, said extension arm 183 being connected to said main beam 10 and being located between a first end 10a and a second end 10b of said main beam 10; the nose pad 112 is connected with the extension arm 183 through the adjusting mechanism 184, the nose pad 112 has a contact surface (such as the first surface 118a of the nose pad main body 118) contacting with the nose of a person (such as the nose of a person to be tested), and the adjusting mechanism 184 is used for adjusting the shape of the contact surface of the nose pad 112.

In one implementation, the extension arm 183 may include: a fixing portion 110 connected between the first end 10a and the second end 10b of the main beam 10 and extending in a longitudinal direction (illustrated + -z direction); a connection adjusting part 111 connected to the fixing part 110 and movable in a longitudinal direction (illustrated ±z direction) with respect to the fixing part 110; the adjustment mechanism 184 is connected to an end 111b of the connection adjustment portion 111 remote from the fixing portion 110.

In one implementation, the fixed portion 110 may be hinged to the main beam 10 and may rotate in a first plane that is perpendicular to the lateral direction (illustrated ± x direction). Thus, the distance between the plane (which may be referred to as the mount surface) on which the lens is located and the eyes of the subject in the depth direction (in the drawing, ±y direction) can be adjusted.

For example, referring to fig. 1, 5 and 6, the front side of the main girder body 100 in the-y direction may be provided with a bracket 113, and the bracket 113 may include a front wall 113a parallel to a third plane parallel to the planes of the lateral direction (illustrated + -x-direction) and the longitudinal direction (illustrated + -z-direction), and a pair of side walls 113b parallel to the first plane.

Specifically, the pair of side walls 113b are spaced apart in the lateral direction (illustrated ±x direction), and one side of the pair of side walls 113 in the depth direction (illustrated ±y direction) is connected to the front wall 113a, respectively, and the other side is connected to the main girder body 100, respectively.

In one embodiment, the fixing portion 110 has a first end 110a and a second end 110b opposite to each other in a longitudinal direction (in the drawing, ±z direction), and the first end 110a of the fixing portion 110 extends into a space surrounded by a front wall 113a and a pair of side walls 113b of the bracket 113 and is hinged to the pair of side walls 113b, and a hinge point is referred to as a hinge point a. The front wall 113a of the bracket 113 is provided with a through hole for the pin 114 to pass through.

Further, the pin 114 may move in the via hole in a direction approaching or moving away from the fixed portion 110, so that the fixed portion 110 rotates in the first plane about the hinge point a.

In one implementation, a spring piece 117 may be further disposed on a side of the front wall 113a of the bracket 113 facing the fixing portion 110, where one end 117a of the spring piece 117 may be fixed on a side of the front wall 113a facing the fixing portion 110 by laser welding, and the other end 117b of the spring piece 117 abuts against the first end 110a of the fixing portion 110.

For example, the other end 117b of the spring piece 117 may abut against the protrusion 165 of the fixing portion 110, and the protrusion 165 may be disposed on a surface of the first end 110a of the fixing portion 110 facing the front wall 113a of the bracket 113.

Thus, by the cooperation of the pin 114 and the spring plate 117, a restoring force of the fulcrum can be provided, so that the fixing portion 110 can be stabilized at the position when moving to the proper position in the first plane under the action of the pin 114.

In one implementation, with continued reference to fig. 5 and 6, the fixing portion 110 may have a hollow structure, and an opening exposing the hollow structure therein is formed at the second end 110b, and one end 111a of the connection adjusting portion 111 extends into the fixing portion 110 from the opening and is screwed with the fixing portion screw 115 extending into the fixing portion 110 from the first end 110a of the fixing portion 110.

Specifically, one end 111a of the connection adjusting portion 111 may be provided with a coupling portion 175 to be screw-coupled with the fixing portion screw 115 and to be movable up and down along the fixing portion screw 115.

For example, the coupling portion 175 may be a coupling hole formed inwardly from the first end 111a of the connection adjusting portion 111 in a longitudinal direction (in the drawing, ±z direction), the coupling hole having an internal thread, and the surface of the fixing portion screw 115 having an external screw connection. Inside the fixing portion 110, a fixing portion screw 115 is extended into the coupling hole to achieve screw-coupling.

Further, an end of the fixing portion screw 115 extending from the first end 110a of the fixing portion 110 may be connected to the sixth knob 176, and rotating the sixth knob 176 may drive the fixing portion screw 115 to rotate around its own axis, so as to adjust the screw connection length in the coupling hole.

Thus, by rotating the sixth knob 176, the length of the portion of the connection adjusting portion 111 extending into the fixing portion 110 can be adjusted to achieve the effect of adjusting the distance between the nose pad 112 and the fixing portion 110.

Further, the fixing portion 110 and the connection adjusting portion 111 may each be square pipes.

Further, a supporting component, such as a spring 116, may be further disposed in the fixing portion 110, where the spring 116 is disposed in the hollow structure of the fixing portion 110, and one end of the spring 116 in the extending direction abuts against the first end 110a of the fixing portion 110, and the other end is connected to the end 111a of the connection adjusting portion 111, so as to optimize the overall stability when the distance between the nose pad 112 and the fixing portion 110 is adjusted, and play a role in rebound and stabilization.

In one implementation, with continued reference to fig. 5, the nose pad 112 may include: a nose pad body 118 for contact with a human nose; and a deformation portion 119, wherein the deformation portion 119 is attached to the nose pad main body 118 and has elasticity.

For example, the nose pad body 118 may be a flexible stainless steel sheet that is coated with a silicone jacket.

The nose pad body 118 has opposed first and second faces 118a, 118b, wherein the first face 118a may be adapted to form the contact face and contact the nose of a person.

In one implementation, an insert 156 is provided on the second face 118b of the nose pad body 118 proximate to the end of the nose pad body 118. For any one of the insertion portions 156, an insertion port 166 into which the deformation portion 119 is inserted is provided on a side of the insertion portion 156 facing the other insertion portion 156; the side of the insertion part 156 away from the counterpart insertion part 156 is provided with an opening 157 through which the deformation part 119 protrudes; the surface of the insertion portion 156 is provided with an adaptation hole 158 to be coupled with the deformation portion 119.

Thus, the insertion portion 156 ensures that the deformation portion 119 is attached to the nose pad body 118, and the shape of the contact surface is changed by the elasticity of the deformation portion 119.

In one implementation, the adjustment mechanism 184 may include: and a penetrating screw 160 provided at an end of the extending arm 183.

For example, one end of the penetrating screw 160 may be fixed to an end 111b of the connection adjusting part 111 remote from the fixing part 110.

For another example, the angle between the extending direction of the penetrating screw 160 and the extending direction of the extending arm 183 is greater than 90 degrees and less than 180 degrees, so that the position of the nose pad 112 is more consistent with the physiological characteristics of the human face.

Further, the adjusting mechanism 184 may further include: an adjusting nut 161 screwed to the through screw 160 and movable up and down along the through screw 160, the adjusting nut 160 pushing or releasing the nose pad 112 to change the shape of the contact surface.

For example, the adjustment nut 161 may be a wide mouth nut member having an inner arc.

In one implementation, the end of the through-screw 160 remote from the extension arm 183 may be provided with a via 162.

Further, a surface of the via hole 162 contacting the deformation portion 119 has an inner curvature, so that the deformation portion 119 disposed through the via hole 162 can smoothly rotate on the first plane.

For example, the via 162 may be a square hole having an inner arc.

For another example, the via 162 may be opened in a lateral direction (illustrated ± x direction).

In one embodiment, the deformation portion 119 may be an elastic connection steel sheet, and both ends of the deformation portion 119 in the extending direction are provided with protruding portions 159, respectively.

After the adjustment nut 161 is screwed to the through-screw 160, the deformation portion 119 passes through the through-hole 162, and both ends of the deformation portion 119 respectively extend into the corresponding insertion portions 156, and the protrusion portion 159 is coupled with the corresponding fitting hole 158 to fix the nose pad body 118 and the deformation portion 119 as one body.

As the adjustment nut 161 rotates up and down on the through screw 160, the degree of opening and closing of the deformation portion 119 can be changed, and the shape of the first surface 118a of the nose pad body 118 can be adjusted, so that the degree of deformation of the nose pad body 118 is more fit to the height of the ridge of the nose.

During continued closure of the nose pad body 118 with the deformation 119, both ends of the deformation 119 may protrude from the opening 157 to ensure that the nose pad body 118 is consistently better conformed to the deformation 119.

In particular, the initial base point of the eyeglass fitting measurement stand 1 for facial measurement in this embodiment is the nasal bridge midline, and thus, stability and comfort are focused on the design of the nose pad assembly 11. In view of the physiological characteristics of asian race, the ridge height of the central line of the nose is low, so the nose pad 112 can be better fitted to the nose bridge by the cooperation of the nose pad main body 118, the deformation portion 119, the penetrating screw 160 and the adjusting nut 161.

In one implementation, since the surface of the via hole 162 contacting the deformation portion 119 has an inner curvature, the nose pad body 118 can rotate in the first plane about the portion of the deformation portion 119 contacting the via hole 162, so as to adjust the inclination angle of the nose pad 112.

In one implementation, with continued reference to fig. 1 and 7, either of the first and second temples 12 and 13 may include: a temple body 120 connected to the first end 10a or the second end 10b of the main beam 10; an ear hook 121 connected to the temple body 120 and movable back and forth relative to the temple body 120 along an extending direction of the temple body 120; a first locking portion 122 for limiting relative movement between the earhook 121 and the temple body 120.

For example, the temple body 120 may be a hollow frame with reading indicating points provided at appropriate locations in the frame. Correspondingly, the straight line section of the ear hook 121 can extend into the hollow frame body and move back and forth in the frame body, and the straight line section of the ear hook 121 can be provided with scale marks. Therefore, the whole length of the glasses leg can be adjusted by moving the earhook 121, and after the earhook 121 is moved to a proper position, the earhook 121 and the glasses leg main body 120 are locked by the first locking part 122, so that unexpected displacement of the earhook 121 and the glasses leg main body during optometry is prevented. At this time, the length of the temple may be read by the reading indication point and the graduation line on the ear hook 121.

In one implementation, referring to fig. 2 and 4, the glasses fitting measurement rack 1 may further include: a second lateral adjustment member 17, the second lateral adjustment member 17 being connected to the main beam 10 and being movable in a lateral direction (illustrated + -x-direction) with respect to the main beam 10, the first temple 12 being connected to the main beam 10 by the second lateral adjustment member 17, and the first temple 12 moving with the second lateral adjustment member 17.

For example, the main beam 10 may further include: a fifth screw 170, wherein the fifth screw 170 is disposed at a side of the main beam body 100 near the first end 100a along a lateral direction (illustrated ± x direction); and a fourth screw transmission part 171 screwed to the fifth screw 170, wherein the fourth screw transmission part 171 moves along the fifth screw 170 as the fifth screw 170 rotates, and the second lateral adjustment member 17 is connected to the fourth screw transmission part 171.

One end of the fifth screw 170 may extend into the main beam body 100 and the other end may be coupled to a fourth knob 167. Rotating the fourth knob 167 may cause the fifth screw 170 to rotate about its own axis.

The extending direction of the second lateral adjustment member 17 may be parallel to the longitudinal direction (in the drawing, ±z direction), the upper end of the second lateral adjustment member 17 in the +z direction is connected to the fourth screw transmission portion 171, and the lower end of the second lateral adjustment member 17 in the-z direction is connected to the first temple 12.

The second lateral adjustment member 17 and the fourth screw transmission portion 171 may be integrally formed as shown in fig. 8 and 9.

In one embodiment, the fifth screw 170 may be axially provided with a through hole (not shown), and the second screw 101 is disposed in the through hole of the fifth screw 170. Therefore, the fifth screw 170 is sleeved outside the second screw 101 and is arranged in the main beam main body 100, so that the diameter of the main beam main body 100 can be minimized, and the miniaturization design of devices is facilitated.

In one implementation, the glasses fitting measurement rack 1 may further include: a second locking portion 172 for limiting the relative movement between the second lateral adjustment member 17 and the main beam 10.

For example, a through hole (not shown) may be formed in the top end of the main beam body 100 in the +z direction near the first end 100a, and the second locking portion 172 may extend into the main beam body 100 from the through hole. The second locking portion 172 may be a screw that, when rotated in the-z direction to interfere with the fifth screw 170, functions to lock the fifth screw 170 such that the second lateral adjustment member 17 can no longer move in a lateral direction (illustrated + -x direction) relative to the main beam 10.

Similarly, the glasses fitting measuring rack 1 may further include: a third lateral adjustment member 18, the third lateral adjustment member 18 being connected to the main beam 10 and being movable in a lateral direction (illustrated + -x-direction) with respect to the main beam 10, the second temple 13 being connected to the main beam 10 by the third lateral adjustment member 18, and the second temple 13 moving with the third lateral adjustment member 18.

For example, the main beam 10 may further include: a sixth screw 180, which: the sixth screw 180 is disposed on a side of the main beam body 100 near the second end 100b along a lateral direction (illustrated ± x direction);

and a fifth screw transmission portion 181 screwed to the sixth screw 180, wherein the fifth screw transmission portion 181 moves along the sixth screw 180 as the sixth screw 180 rotates, and the third transverse adjusting member 18 is connected to the fifth screw transmission portion 181.

One end of the sixth screw 180 may extend into the main beam body 100 and the other end may be connected to the fifth knob 168. Rotating the fifth knob 168 may cause the sixth screw 180 to rotate about its own axis.

The extending direction of the third transverse adjusting member 18 may be parallel to the longitudinal direction (in the drawing, ±z direction), the upper end of the third transverse adjusting member 18 along the +z direction is connected to the fifth screw transmission portion 181, and the lower end of the third transverse adjusting member 18 along the +z direction is connected to the second temple 13.

The third lateral adjustment member 18 and the fifth screw drive portion 181 may be integrally formed, as shown in fig. 8 and 9.

In one implementation, the sixth screw 180 may be provided with a through hole (not shown) along an axial direction, and the third screw 104 is disposed in the through hole of the sixth screw 180, so that the diameter of the main beam body 100 can be minimized, which is beneficial to the miniaturization design of the device.

The glasses fitting measuring rack 1 may further include: a third locking portion 182 for limiting relative movement between the third lateral adjustment member 18 and the main beam 10.

For example, a through hole (not shown) may be formed in the top end of the main beam body 100 in the +z direction near the second end 100b, and the third locking portion 182 may extend into the main beam body 100 from the through hole. The third locking portion 182 may be a screw that, when rotated in the-z direction to interfere with the sixth screw 180, functions to lock the sixth screw 180 such that the third lateral adjustment member 18 can no longer move in a lateral direction (illustrated + -x direction) relative to the main beam 10.

Therefore, the distance between the first glasses leg 12 and the second glasses leg 13 along the transverse direction (the direction of +/-x in the drawing) is adjustable through the second transverse adjusting piece 17 and the third transverse adjusting piece 18, and the glasses legs can be adjusted to a proper position according to the width of the head circumference of a tested person. And, the width value of the head circumference of the subject (i.e., the temporal distance of the head) can be read based on the graduation marks drawn on the main beam 10.

In one implementation, referring to fig. 1, 7, 8 and 9, the glasses fitting measurement rack 1 of the present embodiment may further include: the first and second temples 12 and 13 are connected to the first and second ends 10a and 10b of the main beam 10 through the rotary connection 19, respectively.

In particular, the rotary connection 19 may be used to bring the temple to rotate within a predetermined angular range in a rotation plane. Wherein the plane of rotation is perpendicular to the lateral direction (illustrated + -x direction).

For example, the temple body 120 may be connected to the main beam 10 by the swivel connection 19.

Therefore, the downtilt angle of the frame surface is adjusted through the rotary connecting piece 19 according to the characteristic that the ear position of a person is individual, and the two glasses legs can be independently adjusted, so that the glasses have important significance in the post-correction process of the glasses frame.

In one implementation, the predetermined angle range may be [ -10,30] degrees, where the predetermined angle refers to an angle between an extension direction of the temple and a depth direction (illustrated ±y directions).

For example, when the extending direction of the temple is parallel to the depth direction (illustrated ±y direction), that is, the extending direction of the temple is perpendicular to the longitudinal direction (illustrated ±z direction), the preset angle is 0 degrees.

For another example, when the temple is rotated in the +z direction by the rotation of the rotation connector 19, the value of the preset angle is positive, and the value increases as the temple is rotated in the +z direction.

For another example, when the temples are rotated in the-z direction by the rotation of the rotation connection members 19, the value of the preset angle is negative, and the value increases as the temples are rotated in the-z direction.

In practical applications, the person skilled in the art can adjust the preset angle range as required. For example, the predetermined angle range may also be [ -45,45] degrees, [ -15,30] degrees, [ -90,90] degrees, etc.

In one implementation, the rotary connection 19 may comprise: the connecting part 192 can rotate around a pivot, and the connecting part 192 is fixedly connected with the glasses leg so as to drive the glasses leg to rotate; and a driving part for driving the connection part 192 to rotate around the pivot.

In one implementation, the driving part may include: a drive screw 190, the drive screw 190 being provided to the second lateral adjustment member 17 (or the third lateral adjustment member 18) in a longitudinal direction (illustrated ± z direction); the driving part screw transmission part 191 is screwed to the driving part screw 190, and along with the rotation of the driving part screw 190, the driving part screw transmission part 191 moves along the driving part screw 190 to drive the connecting part 192 to rotate around the pivot.

In one implementation, one end of the connecting portion 192 may have a protruding portion 193 protruding outwards, and the protruding portion 193 protrudes into a notch 194 formed on the driving portion screw driving portion 191 to be coupled with the notch 194, so that the screw movement of the driving portion screw 190 can be converted into a linear movement by the driving portion screw driving portion 191 and then transferred to the connecting portion 192.

In one embodiment, the glasses fitting measuring frame 1 may include a mounting shaft fixed to the main beam 10, the mounting shaft having a mounting portion 179, and the connecting portion 192 is pinned to the mounting portion 179 by a transverse inner pin 195, and the transverse inner pin 195 is the fulcrum.

For example, the mounting shaft may be formed by the second lateral adjustment member 17 (or third lateral adjustment member 18).

In one embodiment, the transverse inner pin 195 sequentially passes through a locking hole 196 formed in the connection portion 192 and a hinge hole 197 formed in the mounting portion 179 to hinge the connection portion 192 to the mounting portion 179, and the connection portion 192 can be rotated in a rotation plane with the transverse inner pin 195 as a fulcrum.

Thus, the driving portion knob 177 connected to the driving portion screw 190 is rotated, the driving portion screw 191 is moved in the longitudinal direction, and the connecting portion 192 is driven to rotate in the rotation plane with the fulcrum locked by the transverse inner pin 195 as the axis by the coupling action of the notch 194 and the protruding head 193.

Further, the connecting portion 192 and the temple body 120 are connected and locked by the straight pin 198, so as to drive the temple portion to generate a linkage effect, so that the frame surface can make a change of the inclination angle.

For example, the connection portion 192 is provided with the second connection hole 173 along the longitudinal direction, the temple body 120 is provided with the first connection hole 169 adapted along the longitudinal direction, and the length of the temple body 120 along the longitudinal direction may be smaller than the length of the connection portion 192 along the longitudinal direction. When in assembly, the glasses leg main body 120 stretches into the connecting portion 192 and enables the positions of the first connecting hole 169 and the second connecting hole 173 to coincide, and the straight pin 198 sequentially penetrates through the second connecting hole 173 and the first connecting hole 169 to achieve fixed connection between the connecting portion 192 and the glasses leg main body 120.

In one implementation, the mounting portion 179 may be provided with an angle scale and tilt angle pointer 199 for indicating the angle of rotation (i.e., tilt angle) of the first temple 12 (or the second temple 13) in the plane of rotation.

Specifically, the tilt angle pointer 199 is coaxially disposed with the transverse inner pin 195 to ensure that the tilt angle pointer 199 can be rotated synchronously when the temple is rotated, so as to accurately indicate the rotation angle of the temple.

For example, the tilt angle pointer 199 may have a slot 199a and the locking hole 196 of the coupling portion 192 may have an adapted fixing bayonet 199b. The mounting portion 179 may have opposite first and second faces 17a, 17b, the connector 192, the drive screw 190, and the drive screw 191 may be located on the first face 17a, and the tilt angle pointer 199 and the angle dial may be located on the second face 17b.

The tilt angle pointer 199 is coupled with the tilt angle pointer 199 after passing through the hinge hole 197 from the second surface 17b, and the locking groove 199a is locked with the fixing bayonet 199b of the connecting portion 192, and the transverse inner pin 195 is coupled with the tilt angle pointer 199 after passing through the locking hole 196 and the hinge hole 197 from the first surface 17a in order to lock the tilt angle pointer 199 and the connecting portion 192. Thereby, the first or second temple 12 or 13 brings about a synchronous rotation of the tilt angle pointer 199 during rotation of the rotation plane, so that it is possible to read the angle between the first or second temple 12 or 13 and the depth direction.

By adopting the glasses fitting measuring frame 1 of the embodiment, the pupil distance and the visual axis distance between the eyes of the tested person can be synchronously measured in the optometry process. The working principle is that on the basis of the appliance stop-motion nose bridge midline, the face recognition basic theory and the vision optical theory are used as the basis, and the modulation behavior of the auxiliary lens is combined, so that the accuracy of the lens can reach an optical element meeting the physiological requirement of eyeballs in the geometrical positioning operation of the optical center of the lens in the lens frame.

Taking the progressive multifocal lens design as an example, the progressive multifocal lens can be divided into zones of distance and near use and zoom transition. When eyes of a person see far and near, a sight line set and a sight line downward movement are used, and the sight line change track needs to be given tracking identification. The glasses fitting measuring rack 1 of the embodiment can accurately track and identify the sight line change track of human eyes during the period.

The face recognition basis is that the geometrical characteristics of a human face are taken as measuring points, the main test target content of the project is the width value of the head circumference of a human, the horizontal interval value and the verticality difference value of the centers of pupils of two eyes, the nose bridge height value, the ear position and eye position interval value and other various lens matching parameters. The glasses fitting measuring frame 1 of the embodiment can accurately measure the parameters of various kinds of glasses fitting.

In a typical application scenario, the optometry process using the above-described spectacle optometry measuring frame 1 shown in fig. 1 to 9 may comprise the following steps:

First, the nose pad assembly 11 and the swivel connector 19 can be adjusted so that the nose pad 112 fits well over the nose bridge of the subject, the nose pad assembly 11 extends in a direction substantially parallel to the longitudinal direction, and the main beam body 100 extends in a direction substantially parallel to the lateral direction.

On the premise of determining the center line reference and the height reference of the nose pad, the fifth screw 170 and the sixth screw 180 are adjusted to adjust the second transverse adjusting member 17 and the third transverse adjusting member 18 to proper positions, the positions of the two temples along the transverse direction are respectively locked by the second locking part 172 and the third locking part 182, and the position information of the second transverse adjusting member 17 and the third transverse adjusting member 18 on the main beam main body 100 is recorded, wherein the position information represents the head circumference width of the tested person. Wherein, the second transverse adjusting member 17 and the third transverse adjusting member 18 may be respectively provided with an indication block to cooperate with the scale marks on the main beam main body 100 to indicate position information.

Then, using the cross Kong Jingpian (which may also be referred to as a cross slit lens, a cross reference test piece) shown in fig. 10, the lens carrier 143 of the first lens holder 14 is inserted at an angle of 45 ° in the +x and +z directions and/or the lens carrier 143 of the second lens holder 15 is inserted at an angle of 45 ° in the-x and +z directions. The cross hole lens 2 is fixed to the lens carrier 143 by the elastic guide 155 and the engagement portion 153. And, the reference graduations 20 of the cross hole lens 2 are ensured to be aligned with the horizontal and vertical graduations 178 of the lens carrying part 143, as shown in fig. 12.

Specifically, the lens 2 with a cross hole according to the present embodiment may include a lens body 25, and the periphery of the lens body 25 may be covered with a frame 21 to play a role of protection.

For example, the lens body 25 may be made of an opaque resin material, and the frame 21 may be made of engineering plastic.

In one implementation, a handle portion 22 may be formed on one side of the frame 21 for a user to take.

In one embodiment, the center of the lens body 25 may be provided with a pupil positioning hole 23 having a radius of 2.5 mm. In practical applications, the positive and negative errors of the radius of the pupil positioning hole 23 may be within 0.03 mm.

In one implementation, the lens body 25 can also be provided with a cross-shaped slit 24, the cross-shaped slit 24 can include a first slit 241 and a second slit 242, the first slit 241 and the second slit 242 being orthogonal at the pupil positioning aperture 23.

Referring to fig. 12, when the cross-hole lens 2 is mounted on the eyeglass fitting measurement stand 1, the extending directions of the cross-shaped slit 24 are parallel to the longitudinal direction and the lateral direction, respectively.

In one implementation, the length L1 of each of the first and second slots 241, 242 may be 14 millimeters and the positive and negative errors may be within 0.05 millimeters. Wherein, the first slit 241 and the second slit 242 may be through grooves penetrating both sides of the lens body 25.

That is, the lens body 25 is shielded from light except for the pupil positioning hole 23, the first slit 241 and the second slit 242.

In one implementation, the end 24a of the first slit 241 remote from the pupil positioning hole 23 may be curved. Similarly, the end 24a of the second slit 242 remote from the pupil positioning hole 23 may also have an arc shape.

Specifically, the radius of the end 24a may be 0.5 millimeters and the positive and negative errors may be within 0.02 millimeters.

In one implementation, the width D2 of each of the first and second slits 241, 242 may be 1 millimeter and the positive and negative errors may be within 0.02 millimeter.

In one implementation, the frame 21 may be provided with a reference scale 20, where the reference scale 20 corresponds to the first slit 241 and the second slit 242, respectively. That is, the direction of extension of the first slit 241 and the second slit 242 coincides with the reference scale 20.

After fixing the cross hole lens 2, the second screw 101 and the third screw 104 are adjusted to move the first lens holder 14 and the second lens holder 15 in the lateral direction (illustrated ± x direction), thereby adjusting the pupil center of the subject. At this time, if the reflection point where the corneal vertex is linearly illuminated is at the center position of the pupil positioning hole 23, the parameters of the single-or double-eye interpupillary distance can be observed and measured by the position of the first lateral adjustment member 142 on the main beam body 100.

Further, if the reflection point is deviated, the deviated position can be observed in the cross-shaped slit 24, and can be adjusted (for example, the first screw 145, the second screw 101 and/or the third screw 104 are adjusted) in time, and the difference of the geometric dimension between the pupils of the eyes of the tested person can be observed through the scales on the longitudinal adjusting member 141 and the main beam body 100.

To improve accuracy, the light reflection point may be brought into the slit 24 by lowering or raising the horizontal reference by the lens carrier 143.

Thus, the condition of the cornea reflecting spot of the tested person at the central position of the pupil positioning hole 23 can be observed, and if the cornea reflecting spot deviates, quantitative adjustment of two horizontal and vertical dimensions (respectively corresponding to the transverse direction and the longitudinal direction) can be performed by utilizing the slit 24.

In a typical application scenario, it is often necessary to locate a distance center and a near center point on the lens surface in a job of fitting progressive addition lenses. The near center point usually causes the position deviation of the set intersection point due to poor synchronization or abnormal coordination of the invisible strabismus or adjustment and the set function, and in the lens manufacturing process, particularly in high-grade personalized design, the parameter content option needs to specify the inward shift of the single-eye near sight center. At this time, the measurement of the lower viewing angle according to the projection of the eye's line of sight becomes important.

The cross-hole lens 4 shown in fig. 11 (which may be referred to as a spider lens, cross-hole test piece) provides a test means for this operation. The design principle of the cross hole lens 4 may be that, based on the cross hole lens 2 shown in fig. 10, a peep hole 40 with a radius of 1.5mm is formed at an end 24a of one of the slits 24, and the movement track of the reflection point on the cornea of the eye can be observed through the pair of peep holes 40. The peephole 40 located above the angle shown in the figure is located as a coordinate for distance, and the peephole 40 located below is located as a projection point of the lower viewing angle.

For example, the positive and negative errors of the radius of the peephole 40 may be within 0.02 millimeters.

Specifically, the cross-shaped slot 24 shown in fig. 10 may include a first slot 241 and a second slot 242. Referring to fig. 13, when the cross-hole lens 4 is mounted on the eyeglass fitting measurement rack 1, the extending direction of the first slit 241 is parallel to the longitudinal direction (illustrated ±z direction), and the extending direction of the second slit 242 is parallel to the transverse direction (illustrated ±x direction).

Further, the peeping holes 40 are formed at both ends of the first slit 241 along the extending direction. With continued reference to fig. 13, the peephole 40 located above in the longitudinal direction (illustrated ±z direction) is used for the coordinate positioning for distance, and the peephole 40 located below in the longitudinal direction (illustrated ±z direction) is used as the projection point position of the lower viewing angle.

Further, the lens body 25 is shielded from light except for the pupil positioning hole 23, the first slit 241, the second slit 242, and the peephole 40.

In a variation, the peephole 40 may be rectangular, polygonal, etc. in shape.

Based on the adjustment base point completed based on the cross hole lens 2 shown in fig. 10, under the condition that the subject performs close range operation, the change of the adduction degree of the visual axis varies according to the person due to the aggregation effect of the binocular eye axis, and the change of the moving track of the visual axis of the subject in the close range state can be measured by observing and adjusting the position of the cornea reflecting point in the peep hole 40 of the cross hole lens 4 shown in fig. 11.

The glasses fitting measuring rack 1 of the embodiment has the advantage of being capable of being adjusted up and down at the reference position in the vertical direction. The wearer is evaluated as to what progressive channel length type of lens is suitable for use. The channel length of progressive lenses is typically in three types of gauges, long, medium and short.

And under the desktop environment, whether the cornea reflecting point of the tested person is in the passage of the cross fracture or not can be tracked in real time by utilizing the reflecting mirror effect of the mirror, and if deviation exists, the cornea reflecting point can be adjusted in time.

When the spectacle fitting measurement frame 1 is worn on the face, it is necessary to observe that the rear surface of the test piece should be held at a position of 12 mm from the anterior vertex of the cornea of the eye.

Specifically, the nose pad assembly 11 can be moved back and forth in a first plane by rotating the pins 114 so that the elevation of the lens carrier 143 is perpendicular to the anterior cornea.

However, the eye's sight habit has a certain downward angle, at this time, the inward inclination of the whole mirror surface can be adjusted by the rotary connecting piece 19, and when the adjustment is to a proper angle, the seat frame scale of the rotary connecting piece 19 can prompt the downward inclination angle of the first glasses leg 12 and the second glasses leg 13. The tilt angle pointer 199 may act as a fulcrum pointer for the tilt down lever.

In a typical application scene, the ear position of a person is individual, the downward inclination angle of the frame surface is different due to different ear positions, most individuals also have left and right deviation of the ear position, and the method has very important clinical significance in the later correction process of the spectacle frame, and the ear position is known.

The ear position has not only the height but also the front and rear parts, the front and rear positions of the ear position can be influenced by the formation of the skull, and the specification of the length dimension of the frame leg required to be selected in the lens fitting operation of the ear position of the tested person can be measured through the action of the sliding rods of the glasses leg main body 120 and the ear hook 121. Meanwhile, the first locking part 122 is also used for fixing the whole test rack, so that the stability of the whole test rack is improved.

Common methods of measuring the pupil distance are all performed in a passive manner, and the accuracy of the measurement depends on the user of the method. The device can be used on the basis of combining active and passive, takes subjective facts as guidance, and has more clinical practicability.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims

1. A cross Kong Jingpian, comprising:

the lens comprises a lens body, wherein a pupil positioning hole is formed in the center of the lens body, a first slit and a second slit are formed in the lens body, and the first slit and the second slit are orthogonal at the pupil positioning hole;

the frame body is coated on the outer side of the lens body;

wherein peeping holes are formed in two ends of the first slit;

the first slit and the second slit are through grooves penetrating through two sides of the lens body;

the lens body is shielded from light except for the pupil positioning hole, the first slit, the second slit and the peephole.

2. The cross Kong Jingpian as in claim 1, wherein the pupil positioning aperture has a radius of 2.47 to 2.53 millimeters.

3. The cross Kong Jingpian as in claim 1, wherein the first and second slots are each 13.95 to 14.05 millimeters in length.

4. The cross Kong Jingpian as in claim 1, wherein the first and second slits each have a width of 0.95 to 1.05 millimeters.

5. The cross Kong Jingpian as in claim 1, wherein the ends of the first and second slots are arcuate.

6. The cross Kong Jingpian as in claim 5 wherein the end has an arcuate radius of 0.48 to 0.52 mm.

7. The cross Kong Jingpian according to claim 1, wherein the peephole has a radius of 1.48 to 1.52 mm.

8. The cross Kong Jingpian as claimed in claim 1, wherein one side of the frame has a handle portion.

9. The cross Kong Jingpian as claimed in claim 1, wherein the frame is provided with a reference scale, the reference scale corresponding to the first and second slots, respectively.

10. The cross Kong Jingpian as in claim 1, wherein the lens body is made of an opaque resin material.

11. An eyeglass fitting measurement rack, comprising:

A main beam having opposite first and second ends;

The nose pad assembly is connected to the main beam and is positioned between the first end and the second end of the main beam;

the first glasses leg is connected to the first end of the main beam;

the second glasses leg is connected to the second end of the main beam;

The first lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, the first lens fixing frame is positioned between the nose support assembly and the first glasses leg, the transverse direction and the longitudinal direction are mutually perpendicular, and the transverse direction is parallel to the extending direction of the main beam from the first end to the second end;

The second lens fixing frame is connected with the main beam and can move along the transverse direction and the longitudinal direction, and the second lens fixing frame is positioned between the nose support assembly and the second glasses leg;

The cross Kong Jingpian of any one of the preceding claims 1 to 10, secured to at least one of the first and second lens holders.

12. The eyewear mating measurement frame of claim 11 wherein either of the first and second lens mounts comprises:

The support part comprises a longitudinal adjusting part and a first transverse adjusting part, the first transverse adjusting part is connected with the main beam and can move along the transverse direction relative to the main beam, and the longitudinal adjusting part is connected with the first transverse adjusting part and moves along with the first transverse adjusting part;

The lens bearing part is connected to the longitudinal adjusting part and is driven by the longitudinal adjusting part to move along the longitudinal direction.

13. The eyewear testing jig of claim 11 wherein the nose pad assembly comprises: extension arm, adjustment mechanism and nose hold in the palm, the extension arm connect in the girder and be located between the first end and the second end of girder, the nose hold in the palm through adjustment mechanism with the extension arm is connected, the nose holds in the palm have the contact surface with human nose contact, adjustment mechanism is used for adjusting the shape of the contact surface that the nose held in the palm.

14. The eyewear mating measurement frame of claim 11, further comprising:

the rotary connecting piece, first mirror leg and second mirror leg pass through respectively the rotary connecting piece connect in the first end and the second end of girder, rotary connecting piece is used for driving the mirror leg and rotates in the angle within range of predetermineeing in the swivel plane, the mirror leg is any of first mirror leg and second mirror leg, swivel plane perpendicular to transverse direction.