CN112294250A - Self-sensing interpupillary distance measuring device - Google Patents
Self-sensing interpupillary distance measuring device Download PDFInfo
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- CN112294250A CN112294250A CN201910693436.6A CN201910693436A CN112294250A CN 112294250 A CN112294250 A CN 112294250A CN 201910693436 A CN201910693436 A CN 201910693436A CN 112294250 A CN112294250 A CN 112294250A
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- 210000001747 pupil Anatomy 0.000 claims abstract description 62
- 210000001508 eye Anatomy 0.000 claims abstract description 39
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 230000000007 visual effect Effects 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims description 12
- 210000001061 forehead Anatomy 0.000 claims description 5
- 235000011720 Vaccinium uliginosum Nutrition 0.000 claims description 2
- 244000077233 Vaccinium uliginosum Species 0.000 claims description 2
- 210000003128 head Anatomy 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 230000002747 voluntary effect Effects 0.000 claims 6
- 210000005252 bulbus oculi Anatomy 0.000 abstract description 6
- 230000016776 visual perception Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 206010052143 Ocular discomfort Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 230000001179 pupillary effect Effects 0.000 description 2
- 241000669069 Chrysomphalus aonidum Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 n Species 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/11—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils
- A61B3/111—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils for measuring interpupillary distance
Abstract
The invention comprises an optical main frame, a pupil sight measuring frame and a telescopic adjusting component. The optical main frame is provided with two lenses corresponding to the eyes, the pupil sight measuring frame is provided with two pupil sight measuring parts, and each pupil sight measuring part is provided with a sight measuring hole which can be adjusted consciously. The telescopic adjusting component is pivoted between the optical main frame and the pupil sight line measuring frame and is used for adjusting the distance between the optical main frame and the pupil sight line measuring frame. Therefore, when the sight lines of the two eyes respectively pass through the two lenses and the two sight line measuring holes to watch a visual target, the structure that the pupil distance of the two eyes and the distance between the two geometric centers of the two circular frame parts can be obtained through calculation of similar triangles is achieved. Therefore, the scheme has the advantages that the self-sensing interpupillary distance measurement is more consistent with the actual visual perception, the high equipment cost is not required, the eyeball rotation center distance can be calculated, and the like.
Description
Technical Field
The present invention relates to a self-conscious interpupillary distance measuring device, and more particularly, to a self-conscious interpupillary distance measuring device which is capable of measuring the distance between pupils and calculating the distance between the centers of rotation of the eyes without using expensive equipment.
Background
At present, the prescription and optometry of glasses mainly use related optometry equipment to cooperate with experience of qualified optometrists to carry out optometry, however, the optometry equipment and the trial spectacle frame used in the optometry process are different from the final actual glasses worn by a wearer in optical angle design, and the wearer cannot be completely expected to know whether actual optical correction parameters of the wearer are met.
Most importantly, the Pupillary Distance (PD) in optometry is a rapid measurement using instruments, and if the wearer's line of sight is slightly deviated, the optometrist may not find it, and the measurement data may be deviated. As for the Frame, the distance between the two geometric centers (Frame PD, abbreviated as FPD) is usually determined by the Frame selected by the wearer, which may affect the visual perception of the wearer.
The uncomfortable glasses have two generalized factors, one is that the Pupil Distance (PD) is not coaxial with the optical center of the lens to induce prism (prism) effect, and the other is that the curvature of the frame is not properly adjusted to cause the optical axis (optical axis) of the lens and the visual axis (visual axis) of the eye not to induce distortion (aberration) aberration effect simultaneously. These two parts may not be detected due to the short process of guided refraction and the visual perception not conscious by the wearer, resulting in visual discomfort after fitting the glasses.
In view of the above, it is necessary to develop a technology that can solve the above-mentioned drawbacks.
Disclosure of Invention
The objective of the present invention is to provide a self-conscious interpupillary distance measuring device, which has the advantages of self-conscious interpupillary distance measurement that is more suitable for actual visual perception, no need of expensive equipment, low cost, and capability of calculating the distance between the centers of rotation of the eyeballs. Particularly, the problem to be solved by the present invention is that the optical angle design of the traditional optometry equipment is different from that of the final glasses actually worn by the wearer, and the guiding type optometry process is short, which may cause the distance between the pupils and the optical center of the lenses to be different from each other after fitting the glasses, to induce the prism effect, and then the camber of the frame is improperly adjusted, so that the optical axis of the lenses and the visual axis of the eyes are different from each other to induce the distortion aberration effect, thereby causing the visual discomfort after fitting the glasses.
The technical means for solving the above problems is to provide a self-conscious interpupillary distance measuring device, comprising:
an optical main frame selected from one of a trial frame and a general spectacle;
when the trial frame is selected, the trial frame is provided with two circular frame parts and four lens clamping parts; the four lens clamping parts are respectively arranged on the two circular frame parts and are respectively used for inserting at least one lens;
when the common spectacles are selected, the spectacles are provided with the two circular frame parts, and each circular frame part is provided with the lens; each lens is used for corresponding to one of the sight lines of the two eyes of the wearer;
a pupil sight measuring frame which is arranged corresponding to the optical main frame and is provided with a body part, two movable frame parts, two pupil sight measuring parts and two first fixing parts; the main body part is provided with at least one frame groove corresponding to the two movable frame parts, each movable frame part is provided with an inserting end part and an adjusting end part which are back to back, and the inserting end part is used for the movable frame part to be inserted into the frame groove and can be horizontally moved and adjusted relatively; the adjusting end part is inserted by the pupil sight measuring part, can move relatively and can rotate relatively, the pupil sight measuring part is provided with a sight measuring hole which corresponds to one of the sights of the eyes, each second fixing part is screwed in the body part, and when the corresponding movable frame part and the frame groove move horizontally relatively and are adjusted to be positioned, the movable frame part is screwed and fixed;
a plurality of telescopic adjusting components which are respectively pivoted between the optical main frame and the pupil sight line measuring frame; each telescopic adjusting component is used for independently adjusting the distance between the optical main frame and the pupil sight measuring frame along with one of the sights of the eyes;
therefore, when the sight lines of the two eyes of the wearer respectively pass through the at least two lenses and the two sight line measuring holes to watch a visual target, the structure that the pupil distance of the two eyes and the two geometric center distances of the two circular frame parts can be obtained through similar triangular calculation is achieved.
The above objects and advantages of the present invention will be readily understood by the following detailed description of the selected embodiments and the accompanying drawings.
The present invention will now be described in detail with reference to the following examples and accompanying drawings.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2A is a partial cross-sectional view of the telescoping adjustment assembly of the present invention;
FIG. 2B is a partial cross-sectional view of the pupil sightline measurement frame of the present invention;
FIG. 3 is a schematic view of the relationship between the binocular vision and the axes of the lenses and the vision measuring hole according to the present invention;
fig. 4 is a schematic view of a first embodiment of the trial frame of the present invention;
fig. 5 is a schematic view of a second embodiment of the trial frame of the present invention;
FIG. 6 is a schematic diagram of an application of the present invention;
FIG. 7 is a diagram illustrating the correspondence between the components of FIG. 6;
FIG. 8 is a schematic view of an optical mainframe of the present invention;
FIG. 9 is a diagram of an application example of the present invention in which a ruler is disposed at a position where an insertion end portion is opposite to a frame groove to measure an adjustment distance of a relative horizontal movement;
FIG. 10 is a diagram showing an example of the present invention in which a scale is provided at a position corresponding to a position of a telescopic rod portion and a fixed tube portion to measure a relative movement adjustment distance;
fig. 11A is a schematic diagram of a horizontal sensing application example of the general eyeglasses of the present invention;
FIG. 11B is a schematic view of the other angles of FIG. 11A;
FIG. 12 is a schematic diagram of an anteversion angle sensing application of the general eyeglasses of the present invention;
fig. 13 is a schematic diagram of an application example of detecting an eyeball rotation center according to the present invention.
[ description of reference ]
1 optics Main frame 10A trial frame
10B general glasses 111 center frame
11 round frame part 12 lens clamping part
20 pupil line of sight measuring frame 21 body part
211 frame slot 22 two movable frame parts
22A insertion end 22B adjustment end
221 upper groove 222 lower groove
23 pupil line of sight measuring part 231 line of sight measuring hole
24 first fixing part 30 telescopic adjusting component
31 fixed pipe part 32 telescopic rod part
33 second fixing part 40 earpiece
50 frame body is fixed to optometry bracket 51
52 chin bar 53 forehead support bar
91 lens 92 double eyes
G visual target G' near visual target
X1, X2 sight A, B sight hole point
C, D scope axis point of A ', B' near sight line hole point
Central point of both eyes at C ', D' approximate square lens axis point position J, K
Distance between H line-of-sight hole and FPD mirror axis
E. F pupil point position PD pupil distance
M1 first distance M1' is a near first distance
M2 second distance M3 third distance
Detailed Description
Referring to fig. 1, 2A, 2B and 3, the present invention is an automatic interpupillary distance measuring device, comprising:
an optical main frame 1 selected from one of a trial frame 10A and a normal spectacle frame 10B (see fig. 11A, 11B and 12);
when selected from the trial frame 10A, the trial frame has two circular frame portions 11 and four lens engagement portions 12; the four lens engaging portions 12 are respectively disposed on the two circular frame portions 11 for inserting at least one lens 91;
when the eyeglasses 10B (refer to fig. 8, the temple thereof is omitted and will be described first), the eyeglasses have the two circular frame portions 11, and the lens 91 is disposed on each circular frame portion 11; each lens 91 is intended to correspond to one of the lines of sight X1, X2 of the wearer's eyes 92.
A pupil sight measuring frame 20, which is disposed corresponding to the optical main frame 1, wherein the pupil sight measuring frame 20 has a main body 21, two movable frame portions 22, two pupil sight measuring portions 23, and two first fixing portions 24. The main body 21 has at least one frame groove 211 corresponding to the two movable frames 22, each movable frame 22 has an insertion end 22A and an adjustment end 22B opposite to each other, the insertion end 22A is used for the movable frame 22 to be inserted into the frame groove 211 and can be adjusted by moving horizontally relative to each other (as shown in fig. 9, the adjustment distance can be easily determined by setting a ruler …, for example, at the relative moving position, which is a conventional technique).
The adjusting end 22B is inserted into the pupil sight measuring portion 23, and can move relatively and rotate relatively, the pupil sight measuring portion 23 has a sight measuring hole 231 corresponding to one of the sights X1 and X2 of the eyes 92, each of the second fixing portions 24 is screwed to the main body 21, and when the corresponding movable frame portion 22 and the frame groove 211 move horizontally relatively and are adjusted to be positioned, the movable frame portion 22 is screwed and fixed.
A plurality of telescopic adjusting components 30, respectively pivoted between the optical main frame 1 and the pupil sight line measuring frame 20. Each of the telescopic adjustment elements 30 is adapted to independently adjust the distance between the optical frame 1 and the pupil sight measurement frame 20 in response to one of the sights X1, X2 of the eyes 92.
Therefore, when the visual lines X1 and X2 of the eyes 92 of the wearer respectively view a visual target G through the at least two lenses 91 and the two visual line measuring holes 231 (as shown in fig. 7), a structure that the Pupillary Distance (PD) of the eyes 92 and the two geometric center distances (FPD) of the two circular frame portions 11 can be obtained by calculating similar triangles is achieved.
In practice, the trial frame 10A may further include a central frame 111, and the opposite inner sides of the two circular frame portions 11 are respectively inserted into the central frame 111 and can be respectively adjusted by relative movement (the relative movement position can be provided with a scale …, for example, which is easy to determine the adjustment distance, which is a well-known technique, and is not shown in the drawing, and will be described first).
Therefore, the visual lines X1 and X2 of the two eyes 92 of the wearer can be adjusted correspondingly for each lens 91.
The trial frame 10A may be at least one of a spectacle trial frame, a phoropter trial frame, and a desktop trial frame.
In the case of a spectacle trial frame, the spectacle frame further comprises a pair of temples 40 extending from the trial frame 10A (as shown in fig. 4) opposite to the plurality of horizontally extending adjustment members 30, the pair of temples 40 being worn by the wearer.
When the frame is used as a trial frame of the phoropter, the trial frame 10A may be fixed to a known phoropter, and the fixing manner is not limited.
When the trial frame is a desktop trial frame, the trial frame further includes an optometry bracket 50 extending from the trial frame 10A (as shown in fig. 5, extending or fixed in a different manner), and opposite to the plurality of horizontal extension adjustment components 30, the optometry bracket 50 includes a fixing frame body 51, a chin bar 52 and a forehead bar 53, and the chin bar 51 and the forehead bar 52 extend from the fixing frame 51 respectively for the chin and the head of the wearer to abut against.
The frame slot 211 may be one of a single channel structure and two blind via structures.
When the single channel structure is adopted, the two movable frame portions 22 are corresponding to each other and transversely penetrate the main body portion 21 (as shown in fig. 2B).
When the structure is two blind holes, the two blind holes correspond to the two movable frame portions 22 and are respectively and transversely recessed into the main body portion 21.
Each of the adjusting ends 22B has an upper groove 221 and a lower groove 222 corresponding thereto. The upper and lower grooves 221 and 222 are used for installing and positioning the pupil sight line measuring part 23.
The pupil sight measuring part 23 may be a circular plate corresponding to the upper and lower grooves 221 and 222.
The pupil sight line measuring part 23 may be one of a vaccinium uliginosum lens and an optometry structure of any principle.
The pupil line of sight measurement hole 231 may be one of a strip hole, a pinhole, and any optical measurement hole of the same principle.
Therefore, when an external force is applied (for example, by rotating with a finger), the pupil sight line measuring part 23 can rotate to a predetermined angle in situ (the rotation of the circular plate is a well-known technique, and a circular scale … can be disposed at the relative rotation position for easily determining the adjustment distance, which is a well-known technique and is not shown in the drawing, and will be described first).
The first fixing portion 24 can be a screw structure.
Each telescopic adjustment assembly 30 may have a fixed tube portion 31, a telescopic rod portion 32 and a second fixed portion 33. One end of each fixing tube 31 is pivotally connected to the optical main frame 1, one end of the telescopic rod 32 is telescopically inserted into the other end of the fixing tube 31, and the other end of the telescopic rod 32 is pivotally connected to one of the two movable frames 22 of the main body 21. The second fixing portion 33 is screwed on the fixing tube portion 31, and is used to fix the telescopic rod portion 32 by screwing after the telescopic rod portion 32 and the fixing tube portion 31 are extended and retracted to a fixed position (as shown in fig. 10, a scale …, for example, can be disposed at a relative moving position for easily determining an adjustment distance, which is a known technique and not shown in the drawing, and will be described first).
The second fixing portion 33 may be a screw structure.
In the use of the present invention, it is assumed that the at least two lenses 91 match (or are relatively close to, and can be used to fine tune the power of) the eyes 92. Then, the wearer wears the self-conscious interpupillary distance measurement device, and starts to perform self-conscious interpupillary distance measurement while the lines of sight X1 and X2 (see fig. 3, 4, 5, and 6) of the two eyes 92 are sequentially viewed through the lens 91 and the line of sight measurement hole 231 toward a visual target G:
firstly, one eye is shielded to measure the other opened eye, and then the wearer rotates the pupil sight line measuring part 23 corresponding to the opened eye by himself, the rotation process must keep seeing the visual target G through the sight line measuring hole 231, and at least rotates to two positions where the sight line measuring hole 231 respectively presents 180 degrees and 90 degrees (a matching angle mark, which is a well-known technology that must be achieved, which is not repeated, and is explained first), of course, the visual target G may not be seen because the position is slightly deviated from the first, and at this time, the relevant medical care or optometry personnel can adjust at least one of the following:
[a] and adjusting the pupil sight measuring part. The relative movement or relative rotation between the pupil sight measuring part 23 and the adjusting end part 22B is controlled, so that the pupil sight measuring part 23 is moved to the sight measuring hole 231 located on one of the sights X1 and X2 by fine adjustment.
[b] And adjusting a pupil sight measurement frame. The first fixing portion 24 is loosened to control the movable frame 22 and the frame slot 211 to move relatively, so that the pupil sight line measuring portion 23 is moved to the sight line measuring hole 231 located on one of the sight lines X1 and X2 by fine adjustment. The first fixing portion 24 is tightened.
[c] And adjusting by a telescopic adjusting component. The corresponding second fixing portion 33 is loosened, the telescopic rod portion 32 and the fixing tube portion 31 are controlled to relatively extend to a proper position, and the second fixing portion 33 is tightened.
After at least one of the three adjustment actions, the pupil sight line measuring part 23 rotates to two positions, namely 180 degrees (horizontal) and 90 degrees (vertical), of the sight line measuring hole 231, so that the sighting mark G can be seen. The same action is repeated to measure the other eye, and when the eyes 92 are opened simultaneously, two lines of sight X1 and X2 are achieved to focus on the optotype G (as shown in fig. 7). In this process, the wearer voluntarily rotates and moves the pupil visual line measuring unit 23 to determine the visual center position.
Referring to fig. 7, the two sight line measuring holes 231 have a sight line hole point a and a sight line hole point B, respectively, and have a sight line hole distance H therebetween. The two lenses 91 respectively have a mirror axis point position C and D, and have a mirror axis distance FPD therebetween (also referred to as two geometric center distances of the two circular frame portions 11). The two eyes 92 have a pupil point location E and F, respectively, with a pupil distance PD therebetween. A first distance M1 exists between the optotype G and the pupil sight measurement frame 20, a second distance M2 exists between the pupil sight measurement frame 20 and the optical main frame 1, and a third distance M3 exists between the optical main frame 1 and the two eyes 92, and the following relationships are generated by calculating similar triangles:
GA：H＝GC：FPD＝GE：PD。
M1：H＝(M1+M2)：FPD＝(M1+M2+M3)：PD。
that is, the pupil distance PD and the two geometric center distances (i.e., the mirror axis distance FPD) of the two circular frame portions 11 can be estimated and confirmed finally.
The fusion of the eyes 92 can be further improved, so that the wearer can feel more comfortable.
In addition, the scheme can also calculate the distance of the eyeball rotating center. Referring to fig. 13, the center points J and K of the eyes are defined, and if the target G is a distant target (e.g., 500 cm for M1), the fusion image of the eyes 92 is determined by the above method, and then the related data can be recorded.
Then, the original optotype G is moved toward the wearer to become a near optotype G ', and a near first distance M1 ' (assumed to be 250 cm) is formed between the near optotype G ' and the pupil sight line measuring frame 20, and after the fusion of the eyes 92 is determined by the above method, the related data can be recorded.
By using the geometric relationship between the triangle GJK and the triangle G' JK, the included angle between GA and GB can be known from the known M1 and AB; similarly, the included angle between G ' A ' and G ' B ' is known from the known M1 ' and the near sight hole positions A ' and B ' (similarly, the included angle between G ' C ' and G ' D ' is known from the near mirror axis positions C ' and D '). By using known mathematical calculation (the known technique is not repeated), the common base JK (i.e. the distance between the centers of rotation of the eyes) of the triangle GJK and the triangle G' JK can be solved. This data is very helpful to the field of optometric lenses.
The advantages and effects of the invention are as follows:
[1] the subjective interpupillary distance measurement is more in line with the actual visual perception. The adjustable optical main frame, the pupil sight measuring frame and the telescopic adjusting component are arranged, after the components are adjusted, a wearer can see the sighting marks through the sight measuring hole in a self-conscious and clear manner in the rotating process by the sight of the wearer, then the adjusted data of the components are recorded, and the lens is arranged on the spectacle frame and adjusted in a matching manner, so that various data at the moment of optometry can be presented, and the comfort of actually wearing spectacles is improved. Therefore, the subjective interpupillary distance measurement is more consistent with the actual visual perception.
[2] The cost is low without expensive equipment. The invention is composed of the known optometry equipment (such as an optical main frame and a lens) and a simple support structure (a pupil sight line measuring frame and a telescopic adjusting component), does not have complex electronic equipment and complicated operation steps, and can guide a wearer to use as long as optometry is carried out. Therefore, the high equipment is not needed, and the cost is low.
[3] The eyeball rotation center distance can be calculated. The eyeball rotation center distance can be calculated by only two operations (a far visual target and a near visual target) and utilizing the geometrical relationship of two triangles through mathematical calculation, which is very helpful for the field of optometry glasses.
The present invention has been described in detail with reference to the preferred embodiments only, and any simple modifications and variations to the embodiments can be made without departing from the spirit and scope of the present invention.
Claims (6)
1. An voluntary interpupillary distance measuring device comprising:
an optical main frame selected from one of a trial frame and a general spectacle;
when the trial frame is selected, the trial frame is provided with two circular frame parts and four lens clamping parts; the four lens clamping parts are respectively arranged on the two circular frame parts and are respectively used for inserting at least one lens;
when the common spectacles are selected, the spectacles are provided with the two circular frame parts, and each circular frame part is provided with the lens; each lens is used for corresponding to one of the sight lines of the two eyes of the wearer;
a pupil sight measuring frame which is arranged corresponding to the optical main frame and is provided with a body part, two movable frame parts, two pupil sight measuring parts and two first fixing parts; the main body part is provided with at least one frame groove corresponding to the two movable frame parts, each movable frame part is provided with an inserting end part and an adjusting end part which are back to back, and the inserting end part is used for the movable frame part to be inserted into the frame groove and can be horizontally moved and adjusted relatively; the adjusting end part is inserted by the pupil sight measuring part, can move relatively and can rotate relatively, the pupil sight measuring part is provided with a sight measuring hole which corresponds to one of the sights of the eyes, each second fixing part is screwed in the body part, and when the corresponding movable frame part and the frame groove move horizontally relatively and are adjusted to be positioned, the movable frame part is screwed and fixed;
a plurality of telescopic adjusting components which are respectively pivoted between the optical main frame and the pupil sight line measuring frame; each telescopic adjusting component is used for independently adjusting the distance between the optical main frame and the pupil sight measuring frame along with one of the sights of the eyes;
therefore, when the sight lines of the two eyes of the wearer respectively pass through the at least two lenses and the two sight line measuring holes to watch a visual target, the structure that the pupil distance of the two eyes and the two geometric center distances of the two circular frame parts can be obtained through similar triangular calculation is achieved.
2. The voluntary interpupillary distance measurement device of claim 1, wherein:
the trial frame is one of a glasses type trial frame, a comprehensive optometry instrument trial frame and a desktop trial frame;
when the spectacle trial frame is a spectacle trial frame, the spectacle trial frame also comprises a central frame body and a pair of spectacle legs; the opposite inner sides of the two circular frame parts are respectively inserted into the central frame body and can respectively move and adjust relatively, so that the sight line of each lens corresponding to the two eyes of the wearer can be respectively adjusted correspondingly; the pair of glasses legs extends out of the trial frame and is opposite to the plurality of horizontal extension adjusting components, and the pair of glasses legs is worn by the wearer;
when the test mirror bracket is used for the comprehensive optometry instrument, the test mirror bracket is fixed on the comprehensive optometry instrument;
when the trial frame is a desktop trial frame, the trial frame further comprises an optometry bracket which extends out from the trial frame and is opposite to the plurality of horizontal extension adjusting components, the optometry bracket comprises a fixing frame body, a chin support rod and a forehead support rod, and the chin support rod and the forehead support rod respectively extend out of the fixing frame and are used for supporting the chin and the head of the wearer.
3. The voluntary interpupillary distance measurement device of claim 2, wherein:
the frame groove is of one of a single channel structure and two blind hole structures;
when the structure is a single channel structure, the structure is corresponding to the two movable frame parts and transversely penetrates through the body part;
when the structure is two blind holes, corresponding to the two movable frame portions, the blind holes are respectively and transversely recessed in the body portion.
4. The voluntary interpupillary distance measurement device of claim 2, wherein:
each adjusting end part is provided with an upper groove and a lower groove which correspond to each other; the upper groove and the lower groove are used for installing and positioning the pupil sight line measuring part;
the pupil sight measuring part is a circular plate corresponding to the upper and lower grooves.
5. The voluntary interpupillary distance measurement device of claim 4, wherein:
the pupil sight measuring part is a vaccinium uliginosum lens;
the pupil sight line measuring hole is one of a strip-shaped hole, a pinhole and an optical measuring hole;
therefore, when an external force is applied, the pupil sight line measuring part can rotate to a preset angle in situ;
the first fixing portion is a screw structure.
6. The voluntary interpupillary distance measurement device of claim 2, wherein:
each telescopic adjusting component is provided with a fixed pipe part, a telescopic rod part and a second fixed part; one end of each fixing tube part is pivoted with the optical main frame, one end of the telescopic rod part is telescopically inserted into the other end of the fixing tube part, and the other end of the telescopic rod part is pivoted with one of the two movable frame parts of the body part; the second fixing part is screwed on the fixing pipe part and is used for fixing the telescopic rod part in a screw locking way after the telescopic rod part and the fixing pipe part are stretched to reach the positioning;
the second fixing portion is a screw structure.
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| US20070193043A1 (en) * | 2006-02-21 | 2007-08-23 | Dan Katzman | Device and method of measuring a personalized lens-orientation value |
| CN101517459A (en) * | 2006-09-14 | 2009-08-26 | 埃西勒国际通用光学公司 | A method and a device for determining the orientation of a correcting ophthalmic lens, and a method of optically designing the correcting lens |
| JP2008173306A (en) * | 2007-01-19 | 2008-07-31 | Ryuichi Hoshino | Visual axis measuring recorder |
| KR200471540Y1 (en) * | 2013-07-29 | 2014-02-28 | 이현주 | Apparatus For Measuring The Optical Center |
| WO2018178493A2 (en) * | 2017-03-30 | 2018-10-04 | Merindades Vision S.L. | Method for designing a pair of ophthalmic lenses and device for optical measurements |
| CN209055750U (en) * | 2018-07-06 | 2019-07-02 | 深圳小宅科技有限公司 | A kind of head-wearing display device that can show interpupillary distance, eyesight degree |
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