Positioning device for optical axis and corneal vertex

Abstract

A positioning device for an optical axis and a corneal vertex comprises a measuring base and two sets of measuring suites. The measuring base is provided with two base through holes, and the two sets of measuring suites are oppositely arranged in the left-right direction. The measuring suite comprises a first measuring plate, a second measuring plate, a measuring ball and a measuring tube, the first measuring plate and the second measuring plate are adjustably arranged on the measuring base corresponding to the base through hole, and the first measuring plate is arranged in front of the second measuring plate at an interval; a first measuring through hole and a second measuring through hole are formed in the front face of the first measuring plate and the front face of the second measuring plate respectively, the measuring ball is rotatably arranged on the front face of the measuring base, the outer side wall of the measuring pipe is connected to the measuring ball, and the measuring ball rotates to drive one end of the measuring pipe to point to the rear portion of the second measuring through hole. In conclusion, the positioning device provided by the utility model can accurately and intuitively position the visual axes and corneal vertexes of the two eyes of the person who puts the glasses, so that the visual axis distance and the glasses-eye distance of the two eyes of the person who puts the glasses are measured, and the accuracy of doing the glasses according to the measurement result is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a field of matching glasses, especially a kind of positioning device of visual axis and corneal vertex. BACKGROUND

[0002] At present, the general method of matching glasses is directly measuring the distance of the eyes of the person matching glasses, and the optical center of the lens is made to coincide with the visual axis of the eye as far as possible according to the measurement parameter, so that the eye and the glasses are matched as far as possible. However, since the method can only measure the horizontal distance or the shortest distance of the eyes in a plane, when the distance of the eyes in the vertical direction is large, the deviation between the optical center of the lens measured and manufactured by the method and the visual axis of the eyes of the person matching glasses is large, and the measurement method cannot measure the distance between the lens and the eye (referred to as the lens-eye distance), so that the glasses cannot be well matched with the person matching glasses, resulting in inaccurate matching. SUMMARY

[0003] The utility model aims at providing a kind of positioning device of visual axis and corneal vertex, to solve the technical problem that general matching glasses method cannot accurately position the visual axis and corneal vertex of the eyes of the person matching glasses, so as to measure the visual axis distance and lens-eye distance of the eyes of the person matching glasses, resulting in inaccurate matching.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a kind of positioning device of visual axis and corneal vertex, including measurement base and two groups of measurement kits;

[0005] The front of the measurement base is provided with two base through holes spaced apart along the left-right direction, and the two groups of measurement kits are arranged opposite along the left-right direction, and the measurement kits correspond one by one to the base through holes;

[0006] The measurement kit includes a first measurement plate, a second measurement plate, a measurement ball and a measurement tube, the first measurement plate and the second measurement plate are adjustably arranged on the measurement base corresponding to the base through hole, the first measurement plate is arranged in front of the second measurement plate, and the first measurement plate and the second measurement plate can move along the vertical direction and the left-right direction, the front of the first measurement plate and the front of the second measurement plate are respectively provided with a first measurement through hole and a second measurement through hole, the measurement ball is rotatably arranged on the front of the measurement base, and the outer side wall of the measurement tube is connected to the measurement ball. The rotation of the measurement ball can drive one end of the measurement tube to point to the rear of the second measurement through hole.

[0007] Optionally, the measurement base includes a plurality of connecting columns and two base plates arranged spaced apart along the front-rear direction, the base through hole penetrates the two base plates, the connecting columns are respectively connected to the two base plates, and the first measurement plate and the second measurement plate are respectively arranged on the two base plates.

[0008] Optionally, the measuring base comprises four connecting columns and two base plates, and the four connecting columns are arranged at four diagonal ends of the base plates, respectively.

[0009] Optionally, the first measuring plate and the second measuring plate are arranged on the front surface of the base plate.

[0010] Optionally, the base plate is a mirror frame-shaped plate.

[0011] Optionally, the measuring kit further comprises two connecting protrusions, the two connecting protrusions are arranged at the front ends of the two connecting columns, respectively, the two connecting columns provided with the connecting protrusions correspond to the two measuring kits, respectively, the front surface of the connecting protrusion is provided with a measuring groove matched with a measuring ball, and the measuring ball is magnetically connected to the measuring groove.

[0012] Optionally, the connecting protrusion is provided with a displacement slot relative to the side surface of the base hole, and the displacement slot penetrates to the measuring groove.

[0013] Optionally, the measuring kit further comprises two magnetic components, the two magnetic components correspond to the first measuring plate and the second measuring plate, respectively, the magnetic component comprises a plurality of magnetic blocks arranged at the measuring base in the left-right direction, and the first measuring plate and the second measuring plate are magnetically connected to any magnetic block.

[0014] Optionally, the distance between the front surface of the first measuring plate and the back surface of the measuring base is 25mm to 30mm, the width of the base hole in the left-right direction is 45mm to 55mm, the height of the base hole in the vertical direction is 35mm to 45mm, and the minimum distance between the two base holes is 15mm to 25mm.

[0015] Optionally, the mirror frame body and two frame legs are further included, the two frame legs are arranged at the mirror frame in the left-right direction, the mirror frame body is arranged on the back surface of the measuring base, and the mirror frame body is fixedly connected to the measuring base.

[0016] Compared with the prior art, the embodiment of the positioning device for visual axis and corneal vertex has the following beneficial effects:

[0017] The utility model discloses a two base through -hole is set up in the measuring base and sets up two respectively corresponding base through -hole's measurement kit to the two eyes of the person who dispenses glasses respectively carries out measurement, positioning, specifically, measuring base installs in any equipment (can be glasses frame) that can be worn to the face of the person who dispenses glasses, then the position of the first measurement board and the second measurement board of measurement kit is adjusted to the eye of the person who dispenses glasses, first measurement through -hole and second measurement through -hole are in line, the two eyes of the person who dispenses glasses can all be observed the point light source at 5 meters away from the person who dispenses glasses through first measurement through -hole and second measurement through -hole, further, when the person who dispenses glasses gazes point light source, the reflection point of light source is located at the vertex of cornea, rotates the measuring ball, the position of the measuring tube is adjusted to the one end of measuring tube points to the aforementioned reflection point angle (the reflection point of the vertex of cornea of the person who dispenses glasses is seen through the tube hole of measuring tube by staff), together with wearing equipment, the measuring base is taken off from the face of the person who dispenses glasses, prepares two groups of insertion rods corresponding to measurement kit, including first insertion rod and second insertion rod in a group of insertion rods, first insertion rod is passed through first measurement through -hole and second measurement through -hole, two first insertion rods can accurately position the binocular visual axis of the person who dispenses glasses, the distance between two first insertion rods can accurately obtain the binocular visual axis distance of the person who dispenses glasses, second insertion rod is passed through the tube hole of measuring tube, makes first insertion rod and second insertion rod abut, the abutment of two is the position of the vertex of cornea of the person who dispenses glasses, can position the vertex of cornea of binocular through the relative positional relationship of the abutment of two groups of insertion rods and wearing equipment, the distance of the abutment of measuring insertion rod and wearing equipment obtains the spectacle eye distance of binocular of the person who dispenses glasses;Summarizing above, the visual axis and the positioning device of the vertex of cornea of the utility model can accurately, intuitively position the visual axis and the vertex of cornea of binocular of the person who dispenses glasses, thereby measuring the binocular visual axis distance and spectacle eye distance of the person who dispenses glasses, and the accuracy of dispensing glasses according to the measurement result is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structure schematic diagram of the positioning device of the utility model (the first insertion rod is shown, and the second insertion rod is not shown).

[0019] Fig. 2 It is the structure schematic diagram of another perspective of the positioning device of the utility model (the first insertion rod is shown, and the second insertion rod is not shown).

[0020] Fig. 3 It is the front view of the positioning device of the utility model.

[0021] Sign: 1, measuring base;11, base through -hole;12, base plate;13, connecting column;2, measurement kit;21, first measurement board;22, second measurement board;23, measuring tube;24, measuring ball;25, connecting boss;251, let -go slot;26, magnetic attraction component;261, magnetic attraction block;3, first insertion rod. DETAILED DESCRIPTION

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] like Figs. 1 to 3 As shown, this utility model discloses a positioning device for visual axis and corneal apex, comprising a measuring base 1 and two sets of measuring kits 2. The measuring base 1 has two base through holes 11 spaced apart along the left-right direction on its front side. The two sets of measuring kits 2 are arranged opposite each other along the left-right direction, with each measuring kit 2 corresponding to one of the base through holes 11. Each measuring kit 2 includes a first measuring plate 21, a second measuring plate 22, a measuring ball 24, and a measuring tube 23. The first measuring plate 21 and the second measuring plate 22 are adjustablely disposed on the measuring base 1 corresponding to the base through holes 11. The first measuring plate 21 is spaced in front of the second measuring plate 22. The first measuring plate 21 and the second measuring plate 22 can move in the vertical and left-right directions. The front of the first measuring plate 21 and the front of the second measuring plate 22 are respectively provided with a first measuring through hole and a second measuring through hole. The measuring ball 24 is rotatably disposed on the front of the measuring base 1. The outer wall of the measuring tube 23 is connected to the measuring ball 24. The rotation of the measuring ball 24 can drive one end of the measuring tube 23 to point behind the second measuring through hole.

[0026] In the above technical solution, two base holes 11 are formed in the measuring base 1, and two measuring sets 2 corresponding to the base holes 11 are arranged to measure and position the two eyes of the lens wearer, specifically, the measuring base 1 is installed on any device (which can be a frame) that can be worn on the face of the lens wearer, then the positions of the first measuring plate 21 and the second measuring plate 22 of the measuring set 2 are adjusted to the eyes of the lens wearer, the first measuring hole and the second measuring hole are in a straight line, so that the two eyes of the lens wearer can observe the point light source 5 meters away from the lens wearer through the first measuring hole and the second measuring hole, further, when the lens wearer gazes at the point light source, the reflection point of the light source is located at the corneal vertex, the measuring ball 24 is rotated, the position of the measuring tube 23 is adjusted to point to the aforementioned reflection point angle (the staff can see the reflection point of the corneal vertex of the lens wearer through the tube hole of the measuring tube 23), the measuring base 1 is taken off from the face of the lens wearer together with the wearing device, two groups of insertion rods corresponding to the measuring set 2 are prepared, one group of insertion rods includes the first insertion rod 3 and the second insertion rod, the first insertion rod 3 is inserted through the first measuring hole and the second measuring hole, the two first insertion rods 3 can accurately position the visual axes of the eyes of the lens wearer, the distance between the two first insertion rods 3 can accurately obtain the visual axis distance of the eyes of the lens wearer, the second insertion rod is inserted through the tube hole of the measuring tube 23, so that the first insertion rod 3 and the second insertion rod abut against each other, and the abutting position of the two is the position of the corneal vertex of the lens wearer, the corneal vertex of the eyes of the lens wearer can be positioned through the relative position relationship between the abutting position of the two groups of insertion rods and the wearing device, and the distance between the abutting position of the insertion rods and the wearing device can obtain the interpupillary distance of the eyes of the lens wearer; in summary, the visual axis and corneal vertex positioning device of the utility model can accurately and intuitively position the visual axes and corneal vertices of the eyes of the lens wearer, so as to measure the visual axis distance and the interpupillary distance of the eyes of the lens wearer, and the accuracy of lens fitting according to the measurement result is high.

[0027] Further, the measuring base 1 includes a plurality of connecting columns 13 and two base plates 12 arranged in the front-back direction, the base hole 11 penetrates the two base plates 12, the connecting column 13 is connected to the two base plates 12 respectively, and the first measuring plate 21 and the second measuring plate 22 are arranged on the two base plates 12 respectively, so as to increase the thickness of the measuring base 1 in the front-back direction and reduce the weight of the measuring base 1, thereby increasing the comfort of the lens wearer.

[0028] Further, the measuring base 1 includes four connecting columns 13 and two base plates 12, the four connecting columns 13 are arranged at the four diagonal ends of the base plate 12 respectively, so as to ensure that the measuring base 1 has good strength while preventing the connecting column 13 from interfering with the adjustment of the measuring plate.

[0029] Further, the first measurement plate 21 and the second measurement plate 22 are arranged on the front surface of the base plate 12 to avoid the second measurement plate 22 from interfering with the base plate 12 connected to the device for wearing on the face of the lens wearer, and to facilitate the staff to adjust the first measurement plate 21 and the second measurement plate 22.

[0030] Further, the base plate 12 is a frame-shaped plate to match the base plate 12 with the frame to facilitate the connection with the frame.

[0031] Further, the measurement kit 2 further comprises two connecting protrusions 25, the two connecting protrusions 25 are respectively arranged at the front ends of the two connecting columns 13, the two connecting columns 13 provided with the connecting protrusions 25 correspond to the two measurement kits 2 respectively, the front surface of the connecting protrusion 25 is provided with a measurement groove matched with the measurement ball 24, the measurement ball 24 is magnetically connected to the measurement groove, wherein the measurement groove is an arc-shaped groove, in addition, the magnetic force between the measurement ball 24 and the measurement groove can prevent the measurement ball 24 from rotating by itself under the action of gravity, but the staff can rotate the measurement tube 23 or the measurement ball 24 to make the measurement ball 24 rotate, and the size of the magnetic force can also be controlled by the electromagnet.

[0032] Further, the connecting protrusion 25 is provided with a displacement slot 251 relative to the side surface of the base through hole 11, the displacement slot 251 penetrates to the measurement groove to prevent the connecting protrusion 25 from interfering with the movement of the measurement tube 23.

[0033] Further, the measurement kit 2 further comprises two magnetic assembly 26, two groups of the magnetic assembly 26 correspond to the first measurement plate 21 and the second measurement plate 22 respectively, the magnetic assembly 26 comprises a plurality of magnetic blocks 261 arranged in the left-right direction and spaced apart on the measurement base 1, the first measurement plate 21 and the second measurement plate 22 are magnetically connected to any of the magnetic blocks 261, so that the first measurement plate 21 and the second measurement plate 22 can move and adjust the position in the vertical direction and the left-right direction, specifically, one magnetic assembly 26 can include two rows of magnetic blocks 261 arranged in the left-right direction and spaced apart, and the two rows of magnetic blocks 261 are respectively located on both sides of the base through hole 11 in the vertical direction, to increase the strength and stability of the magnetic block 261 connected to the measurement plate.

[0034] Further, the distance between the front surface of the first measurement plate 21 and the back surface of the measurement base 1 is 25mm to 30mm, the width of the base through hole 11 in the left-right direction is 45mm to 55mm, the height of the base through hole 11 in the vertical direction is 35mm to 45mm, and the minimum distance between the two base through holes 11 is 15mm to 25mm, to adapt to the size parameters of most people's eyes.

[0035] Further, the mirror frame body is arranged on the back of the measuring base 1, and the mirror frame body is fixedly connected to the measuring base 1, so as to be conveniently worn on the face of a wearer.

[0036] Further, the specific connection mode of the fixed arrangement and the fixed connection refers to the relative position relationship between two components that can be fixedly connected, including fixed connection through a connecting piece, fixed connection through welding, fixed connection through an adhesive, fixed connection through one-piece forming, and fixed connection through a buckle.

[0037] Further, the specific connection mode of the detachable connection refers to that the two components connected can be repeatedly and multiple times disassembled and assembled without damage or serious deformation, including fixed connection through a connecting piece and fixed connection through a buckle.

[0038] Further, the specific connection mode of the adjustable connection refers to that the two components connected can be adjusted in the mutual position relationship and then fixed, and the adjustment and the fixing can be repeated, including connection through a long hole and a connecting piece and connection through sliding connection and detachable connection.

[0039] Further, the rotating connection refers to that the two components connected can rotate, including connection through a bearing and connection through a gap fit.

[0040] Further, the connecting piece includes a fastener, a strap, a binding rope, a pneumatic connecting element, a hydraulic connecting element, a flange plate, a magic tape, and a button.

[0041] In summary, the embodiment of the utility model provides a positioning device for a visual axis and a corneal vertex, and the technical effect is:

[0042] The utility model discloses a measuring base 1 is seted up two base through -hole 11 and is provided with two respectively corresponding base through -hole 11's measurement kit 2 to the two eyes of the person who is measured respectively, and the specific, measuring base 1 is installed in any equipment (may be glasses frame) that can be worn to the face of the person who is measured, then the position of the first measurement board 21 and the second measurement board 22 of measurement kit 2 is adjusted to the eye of the person who is measured, and the first measurement through -hole and the second measurement through -hole are in line, make the two eyes of the person who is measured can be observed the point light source at 5 meters away from the person who is measured through the first measurement through -hole and the second measurement through -hole, further, when the person who is measured gazes point light source, the reflection point of light source is located at the vertex of cornea, rotates the measuring ball 24, and the position of the measuring tube 23 is adjusted to the end of the measuring tube 23 points to the aforementioned reflection point angle (the staff sees the reflection point of the vertex of cornea of the person who is measured through the pipe hole of the measuring tube 23), and the measuring base 1 is taken off from the face of the person who is measured together with the wearing equipment, and two groups of inserting rods corresponding to measurement kit 2 are prepared, and the first inserting rod 3 and the second inserting rod are included in a group of inserting rods, the first inserting rod 3 is passed through the first measurement through -hole and the second measurement through -hole, and two first inserting rods 3 can accurately position the binocular visual axis of the person who is measured, and the distance between the two first inserting rods 3 can accurately obtain the binocular visual axis distance of the person who is measured, and the second inserting rod is passed through the pipe hole of the measuring tube 23, and the first inserting rod 3 and the second inserting rod abut each other, and the abutment of the two is the position of the vertex of cornea of the person who is measured, and the vertex of cornea of the binocular can be positioned through the relative positional relationship between the abutment of two groups of inserting rods and the wearing equipment, and the distance between the abutment of the measuring inserting rod and the wearing equipment obtains the spectacle segment of the binocular of the person who is measured, and the positioning device of the visual axis and the vertex of cornea of the utility model can accurately and intuitively position the visual axis and the vertex of cornea of the binocular of the person who is measured, so that the binocular visual axis distance and the spectacle segment of the person who is measured are measured, and the accuracy of the person who is measured according to the measurement result is high.

[0043] The above only is the preferred implementation of the utility model, should point out, for ordinary technical personnel in the prior art, on the premise of not departing from the technical principle of the utility model, can make a number of improvements and substitutions, these improvements and substitutions also should be considered the protection scope of the utility model.

Claims

1. A positioning device for the visual axis and corneal apex, characterized in that, It includes a measuring base (1) and two sets of measuring kits (2); The measuring base (1) has two base through holes (11) spaced apart in the left-right direction on its front side. The two sets of measuring kits (2) are arranged opposite each other in the left-right direction. The measuring kits (2) correspond one-to-one with the base through holes (11). The measuring kit (2) includes a first measuring plate (21), a second measuring plate (22), a measuring ball (24), and a measuring tube (23). The first measuring plate (21) and the second measuring plate (22) are adjustablely disposed on the measuring base (1) corresponding to the base through hole (11). The first measuring plate (21) is spaced in front of the second measuring plate (22). The first measuring plate (21) and the second measuring plate (22) can move in the vertical and left-right directions. The front of the first measuring plate (21) and the front of the second measuring plate (22) are respectively provided with a first measuring through hole and a second measuring through hole. The measuring ball (24) is rotatably disposed on the front of the measuring base (1). The outer side wall of the measuring tube (23) is connected to the measuring ball (24). The rotation of the measuring ball (24) can drive one end of the measuring tube (23) to point behind the second measuring through hole.

2. The positioning device for the visual axis and corneal apex according to claim 1, characterized in that, The measuring base (1) includes a plurality of connecting posts (13) and two substrates (12) spaced apart in the front-back direction. The base through hole (11) passes through the two substrates (12). The connecting posts (13) are respectively connected to the two substrates (12). The first measuring plate (21) and the second measuring plate (22) are respectively disposed on the two substrates (12).

3. The positioning device for the visual axis and corneal apex according to claim 2, characterized in that, The measuring base (1) includes four connecting posts (13) and two substrates (12), with the four connecting posts (13) respectively located at the four diagonal ends of the substrates (12).

4. The positioning device for the visual axis and corneal apex according to claim 2, characterized in that, The first measuring plate (21) and the second measuring plate (22) are both disposed on the front side of the substrate (12).

5. The positioning device for the visual axis and corneal apex according to claim 2, characterized in that, The substrate (12) is a mirror-shaped plate.

6. The positioning device for the visual axis and corneal apex according to claim 2, characterized in that, The measuring kit (2) also includes two connecting protrusions (25), which are respectively located at the front ends of the two connecting posts (13). The two connecting posts (13) with the connecting protrusions (25) correspond to the two measuring kits (2). The front of the connecting protrusions (25) is provided with a measuring groove that matches the measuring ball (24), and the measuring ball (24) is magnetically connected to the measuring groove.

7. The positioning device for the visual axis and corneal apex according to claim 6, characterized in that, The connecting protrusion (25) has a relief groove (251) on the side opposite to the base through hole (11), and the relief groove (251) extends through to the measuring groove.

8. The positioning device for the visual axis and corneal apex according to claim 1, characterized in that, The measuring kit (2) also includes two magnetic assemblies (26), which correspond to the first measuring plate (21) and the second measuring plate (22) respectively. The magnetic assemblies (26) include a plurality of magnetic blocks (261) spaced apart in the left-right direction on the measuring base (1). The first measuring plate (21) and the second measuring plate (22) are magnetically connected to any one of the magnetic blocks (261).

9. The positioning device for the visual axis and corneal apex according to claim 1, characterized in that, The distance between the front of the first measuring plate (21) and the back of the measuring base (1) is 25mm to 30mm, the width of the base through hole (11) in the left-right direction is 45mm to 55mm, the height of the base through hole (11) in the vertical direction is 35mm to 45mm, and the minimum distance between the two base through holes (11) is 15mm to 25mm.

10. The positioning device for the visual axis and corneal apex according to claim 1, characterized in that, It also includes a frame body and two frame legs, the two frame legs being spaced apart in the left and right directions on the frame body, the frame body being located on the back of the measuring base (1), and the frame body being fixedly connected to the measuring base (1).

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