CN209751009U - Pupil diameter measuring device - Google Patents
Pupil diameter measuring device Download PDFInfo
- Publication number
- CN209751009U CN209751009U CN201820962463.XU CN201820962463U CN209751009U CN 209751009 U CN209751009 U CN 209751009U CN 201820962463 U CN201820962463 U CN 201820962463U CN 209751009 U CN209751009 U CN 209751009U
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- pupil
- annular
- pupil diameter
- measurement device
- diameter measurement
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Abstract
The utility model provides a pupil diameter measuring device belongs to and measures technical field. The pupil diameter measuring device comprises a pupil measuring part and a handheld part. The pupil measuring section includes an annular alignment device; the inner ring diameter of the annular alignment device is variable and is used for aligning the pupil of the testee, and the diameter of the pupil of the testee is determined by the diameter of the inner ring. The handheld part is connected with the pupil measuring part and is used for a user to hold the pupil diameter measuring device. The pupil diameter measuring device of the utility model is a simple device, can continuously, dynamically and accurately measure the pupil diameter, and can detect the light reflection; simple operation and low learning cost, and is very suitable for first-line clinical staff in emergency department, neurosurgery, ophthalmology, intensive care unit and the like.
Description
Technical Field
The utility model belongs to the technical field of measure, a measuring device is related to, especially a pupil diameter measuring device.
background
Devices currently used to measure pupil diameter can be divided into two categories: a ruler with a plurality of observation holes of different diameters and a circular pattern of different diameters. The two methods are common, the operation is simple, the carrying is convenient, the discontinuity and simple comparison visual inspection of the two methods easily cause larger errors, different measurers and the same measurer have larger errors when measuring the same patient for multiple times, and the accuracy and the consistency of the pupil diameter measurement are poorer. Therefore, a simple device for continuously, dynamically and precisely measuring the diameter of the pupil is urgently needed clinically.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can be in succession developments and measure pupil diameter's simple and easy device accurately.
in order to achieve the above purpose, the utility model discloses a solution is:
A pupil diameter measuring device comprises a pupil measuring part and a handheld part; the pupil measuring section includes an annular alignment device; the inner ring of the annular alignment device has a variable diameter and is used for aligning the pupil of the testee, and the diameter of the pupil of the testee is determined by the diameter of the inner ring; the handheld part is connected with the pupil measuring part and used for a user to hold the pupil diameter measuring device.
The pupil measuring part further comprises an annular support, and the annular alignment device is embedded in the annular support.
A plurality of rotatable blades are arranged inside the annular alignment device; in an initial state, the inner side edges of the blades are positioned on the same circle; when the blades rotate, the inner side edges of all the blades form the circumference of a circular hole with the diameter changing along with the rotation of the blades, and the circular hole forms an inner ring of the annular alignment device.
The annular aligning device comprises an annular base and an annular upper cover, one end of each blade is connected to the annular base, the other end of each blade is connected to the annular upper cover, so that when the annular upper cover rotates coaxially relative to the annular base, the blades are driven to rotate, and the inner side edges of all the blades form a circle of a circular hole with the diameter changing along with the rotation; preferably, one end of the blade is provided with a first bulge on one side, and the other end of the blade is provided with a second bulge on the other side; the annular base is provided with a mounting hole for fixedly connecting the first bulge; a first sliding groove for movably mounting the second bulge is formed in the inner side of the annular upper cover; preferably, the mounting hole is in a circular hole shape, and one end of the blade is clamped in the mounting hole to allow one end of the blade to rotate in the mounting hole; preferably, the first sliding groove is a radial sliding groove, and the other end of the blade is clamped in the first sliding groove to allow the other end of the blade to slide in the first sliding groove; preferably, the mounting holes are arranged on the annular base at equal intervals; the first sliding grooves are arranged on the inner side of the annular upper cover at equal intervals; preferably, the first protrusion and the second protrusion are both cylindrical, the outer diameter of the first protrusion is matched with the inner diameter of the mounting hole, and the outer diameter of the second protrusion is matched with the inner diameter of the first sliding groove.
the annular upper cover is connected with a connecting rod, and the connecting rod is connected with a first adjusting button to allow an operator to drive the annular upper cover to rotate by moving the first adjusting button.
The blades are made of shading materials.
The blades are in the shape of annular segments.
The diameter of the inner ring of the annular alignment device varies in the range of 0-10 mm.
The handheld part comprises a longitudinal second sliding groove, a graduated scale is printed on one side of the second sliding groove, a pointer is arranged outside the second sliding groove and connected with the annular upper cover through a connecting rod, and the diameter of the round hole is represented by the position of the graduated scale pointed by the pointer; the pointer is fixedly connected to the first adjusting button.
The pupil measuring part is provided with an illuminating lamp to allow light reflex examination to be carried out while measuring; the illumination direction of the illuminating lamp points to the pupil of the person to be detected; preferably, the illuminating lamp is an LED lamp bead; preferably, the hand-held part further comprises a third sliding chute; a slide rheostat is arranged in the third sliding groove; the illuminating lamp is connected with a power supply through the slide rheostat; preferably, a battery box is arranged inside the tail end of the handheld part; the battery box is used for accommodating the power supply; preferably, a second adjusting button is arranged in the third sliding chute and used for adjusting the brightness of the illuminating lamp; further preferably, a key is provided on the second adjusting knob for instantly switching on and off the illumination lamp.
Due to the adoption of the scheme, the beneficial effects of the utility model are that: the pupil diameter measuring device of the utility model is a simple device, can continuously, dynamically and accurately measure the pupil diameter, and can detect the light reflection; simple operation and low learning cost, and is very suitable for first-line clinical staff in emergency department, neurosurgery, ophthalmology, intensive care unit and the like.
Drawings
Fig. 1 is a schematic structural diagram of a pupil diameter measuring device in an embodiment of the present invention at a viewing angle;
Fig. 2 is a schematic structural diagram of the pupil diameter measuring device in another view angle in the embodiment;
Fig. 3 is a schematic structural diagram of the pupil diameter measuring device in another view angle in the embodiment;
FIG. 4 is a schematic view of a blade according to the embodiment;
FIG. 5 is a schematic structural view of the ring base in this embodiment;
FIG. 6 is a schematic structural view of an annular upper cover in the embodiment;
FIG. 7 is a schematic view showing a state (large diameter) in which a blade of the pupil diameter measuring apparatus of this embodiment is formed into a circular hole without the annular frame;
FIG. 8 is a schematic view showing another example of the state (small diameter) in which the blades of the pupil diameter measuring apparatus of this embodiment form a circular hole without the annular frame;
fig. 9 is a circuit diagram of a circuit composed of a battery, an illumination lamp and a slide rheostat in this embodiment;
Fig. 10 is a schematic view of an optical path when the pupil diameter measuring apparatus performs measurement.
Detailed Description
The invention will be further described with reference to the following examples of embodiments shown in the drawings.
The utility model discloses a pupil diameter measuring device, the device can continuous measurement pupil diameter to can carry out the inspection of the light reflex. The device is based on the optical imaging principle (light is transmitted in the same medium in a straight line), and the problem that the conventional device for measuring the pupil diameter cannot continuously, dynamically and accurately measure the pupil diameter is solved to a great extent.
The pupil diameter measuring device comprises a pupil measuring part 1 and a handheld part 2, and fig. 1, 2 and 3 are respectively schematic structural diagrams of the pupil diameter measuring device at different viewing angles. The pupil measuring section 1 includes an annular frame 101 and an annular alignment device 102 embedded in the annular frame 101. The annular support 101 has an inner diameter of 15mm and an outer diameter of 25 mm.
the inner ring diameter of the annular alignment device 102 is continuously adjustable. Specifically, the annular alignment device 102 is internally provided with a plurality of rotatable blades 1021, which are arranged in an overlapping manner; in an initial state, the inner side edges of the blades 1201 are positioned on the same circle; when the blades rotate, the inner edges of all the blades form the circumference of a circular hole (namely the inner ring) with the diameter continuously changing along with the rotation of the blades; the round hole is used for aligning to the pupil to be measured, and the diameter of the round hole is in the range of 0-10 mm. The material of the blade is made of shading material, so that the blade is not light-tight. The blades are in the shape of annular segments. Fig. 4 is a schematic structural view of the blade in this embodiment.
To secure the vanes 1021, the annular alignment device 102 further comprises an annular base 1022 and an annular upper cover 1023, one end of the vanes being attached to the annular base 1022 and the other end of the vanes being attached to the annular upper cover 1023, such that when the annular upper cover 1023 is rotated coaxially with respect to the annular base, the vanes are caused to rotate, the inner edges of all the vanes forming a circumference of a circular hole of continuously varying diameter with rotation. The outer annular edge of the annular upper cover 1023 is connected with a connecting rod, which is connected with a first adjusting knob to allow an operator to drive the annular upper cover 1023 to rotate by operating the first adjusting knob, thereby driving the blades to rotate. FIG. 5 is a schematic structural view of the ring base; fig. 6 is a schematic structural view of the annular upper cover, in which the connecting rod is not shown.
specifically, one end of the blade 1201 is provided with a first protrusion on one side, and the other end is provided with a second protrusion on the other side, and both the first protrusion and the second protrusion are cylindrical. The annular base 1022 is provided with mounting holes for connecting the first protrusions, the mounting holes are arranged on the annular base 1022 at equal intervals, the mounting holes are circular holes, and one end of each blade is clamped in the mounting holes so as to allow one end of each blade to rotate in the mounting holes; the inboard of annular upper cover 1023 is provided with the bellied first spout that is used for installing the second, and this first spout is radial spout, and first spout equidistant setting on annular upper cover 1023's inboard, the other end joint of blade is in first spout to the other end that allows the blade slides in first spout. The outer diameter of the first protrusion is matched with the inner diameter of the mounting hole, and the outer diameter of the second protrusion is matched with the inner diameter of the first sliding groove. When rotating annular upper cover 1023 through first knob, first arch is fixed and is rotated on annular base 1022 in situ, and the activity (activity range is spacing by the both ends face of first spout and is controlled) in the first spout of annular upper cover 1023 place to blade 1201 rotates along with annular upper cover 1023's rotation, and all blades 1201 syntropy rotate, and the diameter of the round hole that its inner fringe formed changes, and when using, the adjustment makes this round hole aim at with waiting to detect person's pupil, and the diameter of this round hole equals to waiting to detect person's pupil's diameter promptly.
Fig. 7 and 8 show the form of the circular holes formed by the blades in two rotational positions, respectively, the hole having a relatively large diameter in fig. 7 and a relatively small diameter in fig. 8. When the pupil diameter is detected, the diameter of the round hole is equal to the pupil diameter of the person to be detected by adjusting the size of the round hole, so that the pupil diameter of the person to be detected is determined according to the diameter of the round hole. In fig. 7 and 8, the annular support 101 is not shown, but is simplified or not shown for other configurations, since it is mainly used to show the diameter variation of the circular hole formed by the blade.
The handheld part 2 is a hollow cylinder with the diameter of 12mm and is naturally and continuously connected with the pupil measuring part 1 so as to be used for a user to operate the handheld pupil diameter measuring device and display the diameter of the round hole. The handle 2 includes a second sliding slot 201 parallel to the axial direction of the handle 2. The second chute 201 has a total length of 30mm and a width of 1 mm. One side of the second sliding chute 201 is printed with a graduated scale 202 (measuring range is 0.5-10mm), and a pointer 203 is arranged outside the second sliding chute 201, the pointer 203 is connected with the annular upper cover 1023 through a connecting rod, so that the diameter of the circular hole is represented by the position of the graduated scale 202 pointed by the pointer 203. Specifically, one end of the connection rod is fixed at a certain fixed position of the annular upper cover 1023, the other end is connected to a first adjustment knob, and the pointer 203 is fixed on the first adjustment knob. Therefore, when the first adjusting button is moved, the connecting rod is pulled to drive the annular upper cover 1023 to rotate, and simultaneously the pointer 203 moves along with the first adjusting button, the scale of the graduated scale 202 pointed by the pointer 203 represents the diameter of the circular hole at the moment.
In this embodiment, the pupil measuring unit 1 is further provided with an illuminating lamp 103 to allow light reflex examination during measurement, the illuminating lamp 103 is specifically disposed on the ventral surface (the surface close to the patient during measurement) of the joint of the annular bracket 101 and the handheld unit 2, and the irradiation direction is directed to the pupil of the patient (the person to be measured). The illuminating lamp is an LED lamp bead.
The handheld part 2 is also provided with a third sliding groove 204, and the total length of the third sliding groove 204 is 25mm, and the width is 1 mm. A slide rheostat RP is arranged in the third sliding groove 204, and the illuminating lamp 103 is connected with a power supply through the slide rheostat, wherein the power supply adopts a No. 7 battery. The interior of the end of the hand-held part 2 is provided with a battery case for accommodating the No. 7 battery. Fig. 9 is a circuit diagram showing a circuit composed of a battery, an illumination lamp and a slide rheostat.
The third chute 204 is provided with a second adjusting button 205, the second adjusting button 205 corresponds to the adjusting end of the slide rheostat, the second adjusting button 205 is used for adjusting the brightness of the illuminating lamp, and the brightness of the LED lamp bead can be continuously adjusted by pushing the second adjusting button 205. When the second adjusting button 205 slides from the tail of the handheld part 2 to the pupil measuring part 1, the brightness of the LED lamp bead gradually becomes bright. The second adjusting button 205 is provided with a key (corresponding to the switch 206) for instantly switching on and off the LED lamp bead.
When the pupil diameter measuring device is used, the handheld part 2 of the simple device is held by a hand under natural light conditions, the pupil measuring part 102 is close to the pupil of a person to be measured, the distance between the measuring part plane and the cornea of the eye of the person to be measured is about 5mm, the distance between the eye of the person to be measured (namely a user operating the pupil diameter measuring device) and the measuring plane is 500-600 mm, the size of the pupil of the person to be measured is observed through the annular aligning device 102, the first adjusting button is pushed to enable the circular hole of the pupil measuring part 102 to coincide with the outer edge of the pupil of the person to be measured, and the scale of the pointer 203 corresponding to the scale 202 at the moment is read, namely the pupil diameter of the person to. When the diameter of the pupil is measured, the second adjusting button 205 is slid to adjust the brightness of the LED lamp bead, the light reflex change of the pupil of the person to be measured is observed, the diameter of the pupil can be continuously measured in real time, and the light reflex condition of the pupil can be accurately known. The whole process is simple and convenient to operate, can be implemented by one person, and is high in measurement accuracy.
the simplified eye model, namely the eyeball is simplified into a single spherical refractometer with a front and back diameter of 20mm, the refractive index is 1.333, the external light is refracted once when the air enters the spherical interface, the spherical curvature radius is 5mm, namely the node (the light passing through the node, the propagation direction of the light does not change) is 5mm behind the spherical interface, the back main focus is equivalent to the back pole of the simplified eye model, the simplified eye model is similar to the normal human eye, the object can be imaged on the retina like, the AB is a radius = (0.25 = 5mm), the CD is an annular alignment device 102, the radius of the simplified eye model is equivalent to the back pole of the simplified eye model, the simplified eye model is equivalent to the normal human eye 000, the BD = the AB is equivalent to the radius of a triangle, the AB is equivalent to the geometric alignment mark "= 99" = 200 "= 2" = 26 "= 200" = 2 "= 200" = 2 "= 200" = 10 "= 2" = 10 "= 2" = 3 "= 2" = 3 "= 10" = 3 "= 2" = 3 "= 2" = 3 "=.
The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.
Claims (21)
1. A pupil diameter measuring device, characterized in that: comprises a pupil measuring part and a handheld part;
The pupil measuring section includes an annular alignment device; the inner ring of the annular alignment device has a variable diameter and is used for aligning the pupil of the testee, and the diameter of the pupil of the testee is determined by the diameter of the inner ring;
the handheld part is connected with the pupil measuring part and used for a user to hold the pupil diameter measuring device.
2. the pupil diameter measurement device according to claim 1, wherein: the pupil measuring part further comprises an annular support, and the annular alignment device is embedded in the annular support.
3. The pupil diameter measurement device according to claim 1, wherein: a plurality of rotatable blades are arranged inside the annular alignment device; in an initial state, the inner side edges of the blades are positioned on the same circle; when the blades rotate, the inner side edges of all the blades form the circumference of a circular hole with the diameter changing along with the rotation of the blades, and the circular hole forms an inner ring of the annular alignment device.
4. The pupil diameter measurement device according to claim 3, wherein: the annular aligning device comprises an annular base and an annular upper cover, one end of each blade is connected to the annular base, the other end of each blade is connected to the annular upper cover, so that when the annular upper cover rotates coaxially relative to the annular base, the blades are driven to rotate, and the inner side edges of the blades form a circle of a circular hole with the diameter changing along with the rotation.
5. The pupil diameter measurement device according to claim 4, wherein: one end of each blade is provided with a first bulge on one side, and the other end of each blade is provided with a second bulge on the other side; the annular base is provided with a mounting hole for fixedly connecting the first bulge; the inner side of the annular upper cover is provided with a first sliding groove for movably mounting the second protrusion.
6. The pupil diameter measurement device according to claim 5, wherein: the mounting hole is in a circular hole shape, and one end of the blade is clamped in the mounting hole to allow one end of the blade to rotate in the mounting hole.
7. The pupil diameter measurement device according to claim 5, wherein: first spout is radial spout, the other end joint of blade is in first spout, in order to allow the other end of blade slides in first spout.
8. The pupil diameter measurement device according to claim 5, wherein: the mounting holes are arranged on the annular base at equal intervals; the first sliding grooves are arranged on the inner side of the annular upper cover at equal intervals.
9. The pupil diameter measurement device according to claim 5, wherein: first arch and second are protruding to be cylindricly, first bellied external diameter with the internal diameter of mounting hole matches, and the bellied external diameter of second matches with the internal diameter of first spout.
10. The pupil diameter measurement device according to claim 3, wherein: the annular upper cover is connected with a connecting rod, and the connecting rod is connected with a first adjusting button to allow an operator to drive the annular upper cover to rotate by moving the first adjusting button.
11. The pupil diameter measurement device according to claim 3, wherein: the blades are made of shading materials.
12. The pupil diameter measurement device according to claim 3, wherein: the blades are in the shape of annular segments.
13. The pupil diameter measurement device according to claim 1, wherein: the diameter of the inner ring of the annular alignment device varies in the range of 0-10 mm.
14. The pupil diameter measurement device according to claim 4, wherein: the handheld portion comprises a longitudinal second sliding groove, a scale is printed on one side of the second sliding groove, a pointer is arranged outside the second sliding groove and connected with the annular upper cover through a connecting rod, and the diameter of the round hole is represented by the position, pointing to the scale, of the pointer.
15. The pupil diameter measurement device according to claim 14, wherein: the annular upper cover is connected with a connecting rod, and the connecting rod is connected with a first adjusting button so as to allow an operator to drive the annular upper cover to rotate by moving the first adjusting button; the pointer is fixedly connected to the first adjusting button.
16. The pupil diameter measurement device according to claim 1, wherein: the pupil measuring part is provided with an illuminating lamp to allow light reflex examination to be carried out while measuring; the illuminating direction of the illuminating lamp points to the pupil of the person to be detected.
17. The pupil diameter measurement device of claim 16, wherein: the illuminating lamp is an LED lamp bead.
18. The pupil diameter measurement device of claim 16, wherein: the handheld part also comprises a third sliding chute; a slide rheostat is arranged in the third sliding groove; the illuminating lamp is connected with a power supply through the slide rheostat.
19. The pupil diameter measurement device of claim 18, wherein: a battery box is arranged in the tail end of the handheld part; the battery box is used for accommodating the power supply.
20. The pupil diameter measurement device of claim 18, wherein: and a second adjusting button is arranged in the third sliding groove and used for adjusting the brightness of the illuminating lamp.
21. The pupil diameter measurement device of claim 20, wherein: the second adjusting button is provided with a key for instantly switching on and off the illuminating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820962463.XU CN209751009U (en) | 2018-06-21 | 2018-06-21 | Pupil diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820962463.XU CN209751009U (en) | 2018-06-21 | 2018-06-21 | Pupil diameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209751009U true CN209751009U (en) | 2019-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820962463.XU Expired - Fee Related CN209751009U (en) | 2018-06-21 | 2018-06-21 | Pupil diameter measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209751009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108542347A (en) * | 2018-06-21 | 2018-09-18 | 张杨杨 | A kind of pupil diameter measuring device |
-
2018
- 2018-06-21 CN CN201820962463.XU patent/CN209751009U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108542347A (en) * | 2018-06-21 | 2018-09-18 | 张杨杨 | A kind of pupil diameter measuring device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 |