Line of sight guidance device and projector

Abstract

To provide a line of sight guidance device and a projector capable of performing an inspection and a medical examination in a hands-free manner with a simple configuration.SOLUTION: A line of sight guidance device 1 is a line of sight guidance device 1 for guiding a line of sight of a patient which is provided with a hooking portion 2 to be hooked on spectacles 40 of an examiner, and the hooking portion 2 is provided with an optotype body for guiding the line of sight of the patient.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a line-of-sight guidance device and a projector.

Background Art

[0002] Conventionally, in ophthalmic function examinations and the like, a line-of-sight guidance device such as a penlight that is held in the hand to guide the line of sight of a patient is known. In addition, as a projector used when examining the ears, nose, throat, etc., a so-called headband mirror worn by an examiner on the head is known. In recent years, as an alternative to the headband mirror, a pair of glasses frames with a plurality of light-emitting units arranged thereon has been proposed (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the conventional line-of-sight guidance device has a problem that it cannot be used when the examiner's both hands are occupied. In addition, the projector of Patent Document 1 may make it difficult to observe the examination sites such as the ears, nose, and throat. Therefore, an object of the present invention is to provide a line-of-sight guidance device and a projector that can perform examinations and diagnoses hands-free with a simple configuration.

Means for Solving the Problems

[0005] The line-of-sight guidance device according to the present invention is a line-of-sight guidance device for guiding the line of sight of a patient, and includes a hook portion that is hooked on the examiner's glasses, and the hook portion includes a target body that guides the line of sight of the patient. The projector according to the present invention is a projector used for examining ears, noses, throats, etc., and includes a hooking portion that hooks onto the examiner's glasses. The hooking portion includes a light emitting portion, and at least a pair of the light emitting portions are arranged at positions facing each other across the pupil of the examiner.

Advantages of the Invention

[0006] According to the present invention, inspection and examination can be performed hands-free with a simple configuration.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0008] (Configuration of the line-of-sight induction apparatus) Hereinafter, an embodiment of the line-of-sight induction apparatus will be described with reference to the drawings. The symbol UP shown in each figure indicates the upper direction, and FR indicates the front direction. FIG. 1 shows a mode in which the line-of-sight induction device 1 is attached to the center of the frame of the glasses 40, and FIG. 2 shows a mode in which it is attached to one eye side of the glasses 40. In each figure, the glasses 40 are targeted at the glasses used by the examiner, but are not limited thereto, and may be glasses prepared in advance for ophthalmic examinations, such as glasses for vision tests, as long as they have a spectacle frame. When the line-of-sight guidance device 1 inspects the state of a patient's eyes by means of a cover test, as shown in FIG. 1, it is used by being attached to the center of glasses 40 worn by an examiner in an ophthalmology department. When performing a cover test, the examiner holds an occluder in one hand and alternately applies the occluder to both eyes of the patient. Further, the examiner may hold a tool (not shown) different from the occluder such as a prism. As shown in FIGS. 3 to 5, the line-of-sight guidance device 1 includes a hook portion 2 and a protruding portion 3 supported by the hook portion 2. The line-of-sight guidance device 1 is formed of resin.

[0009] The hook portion 2 includes a pair of fastening portions 5 extending in the vertical direction, a pair of locking portions 4 extending obliquely downward from the upper portions of the fastening portions 5, and a bridging portion 6 bridging the upper portions of the fastening portions 5. The hook portion 2 is formed symmetrically with respect to the center of the bridging portion 6. The fastening portions 5 and the bridging portion 6 are integrally formed of plate-like members having substantially the same thickness.

[0010] As shown in FIG. 5, in a rear view, the pair of fastening portions 5 are formed to face each other, and the pair of locking portions 4 are also formed to face each other. The fastening portions 5 are formed such that the width between the lower ends is wider than the width between the upper ends of the fastening portions 5, and the locking portions 4 are formed such that the width between the lower ends is also wider than the width between the upper ends of the locking portions 4. That is, in a rear view, the fastening portions 5 and the locking portions 4 are formed with a tapered tip. The tip portions 4A of the locking portions 4 extend overlapping the fastening portions 5 to approximately the middle position in the longitudinal direction of the fastening portions 5. As shown in FIGS. 3 and 4, the thickness of the locking portions 4 is formed thicker than the thicknesses of the fastening portions 5 and the bridging portion 6, and is formed to narrow toward the tip portions 4A.

[0011] When performing the cover test, as shown in Fig. 1, a pair of fastening portions 5 and a pair of locking portions 4 are hooked on the left and right lens frames 41 of the glasses 40, and the tip of the fastening portion 5 abuts against the front surface of the lens frame 41 or the lens 42, whereby the line-of-sight guiding device 1 is supported at the center of the glasses 40. The center of the glasses 40 is an example of the frame side portion of the examiner's glasses 40. The distance between the pair of fastening portions 5 and the locking portions 4 is formed such that at least the upper ends of the fastening portions 5 and the locking portions 4 are hooked on the left and right lens frames 41.

[0012] On the other hand, when performing the cover test by shifting the line-of-sight guiding device 1 from the center of the glasses 40, as shown in Fig. 2, it is also possible to hook the locking portion 4 on one of the lens frames 41 of the glasses 40. In this case, the pair of fastening portions 5 and the pair of locking portions 4 are hooked on one of the lens frames 41 of the glasses 40, and the tip of the fastening portion 5 abuts against the front surface of one of the lens frames 41 or one of the lenses 42, whereby the line-of-sight guiding device 1 is supported on one eye side of the glasses 40. One eye side of the glasses 40 is an example of the frame side portion of the examiner's glasses 40. Whether to support the line-of-sight guiding device 1 on the frame side portion of the examiner's glasses 40 or at the frame center is appropriately set according to the content of the functional test performed by the examiner and the purpose of the functional test. For example, when the examiner observes with both eyes, the line-of-sight guiding device 1 is supported on the frame side portion of the examiner's glasses or on one of the lens frames 41 for the inspection.

[0013] As shown in Fig. 4, the bridge portion 6 includes a shaft base portion 7 formed to project from the back surface of the bridge portion 6. The shaft base portion 7 is located on the upper surface at around the longitudinal center of the bridge portion 6. A columnar rotation shaft portion 8 is integrally formed on the upper portion of the shaft base portion 7, and a protruding portion 3 is rotatably attached to the rotation shaft portion 8.

[0014] The protruding portion 3 is attached to the hooking portion 2 so as to protrude in a direction substantially perpendicular to the extending direction of the fastening portion 5 and forward. The protruding portion 3 is formed in a substantially rhombic shape when viewed from above. The protruding portion 3 has a rotation hole 9 formed at the rear and opened in the vertical direction, and the rotation shaft portion 8 is inserted through the rotation hole 9.

[0015] As shown in FIG. 3, the protruding portion 3 is provided with a light emitting portion 11 having a light emitting element 10 such as a light emitting diode at the front end. The light emitting portion 11 is covered with a columnar cover formed of a transparent resin, glass, or the like, and glare is reduced.

[0016] The light emitting portion 11 covering the light emitting element 10 is provided so as to protrude from the front tip 3A of the protruding portion 3. Although not shown, the protruding portion 3 incorporates a battery and is provided with a switch 12 on the upper surface for turning on or off the light emitting element 10. In the above embodiment, the protruding portion 3 is attached to the hooking portion 2 and the light emitting portion 11 is disposed at the front tip 3A of the protruding portion 3, but the present invention is not limited thereto. When the light emitting portion 11 is miniaturized, the protruding portion 3 can be omitted. In this case, although not shown, the light emitting portion 11 may be directly disposed, for example, around the bridging portion 6 of the hooking portion 2.

[0017] A visual target body 21 is fixed to the tip of the protruding portion 3. As shown in FIG. 3, the visual target body 21 is in a cylindrical shape with a diameter increasing toward the front, and is formed so as to be able to transmit the light of the light emitting portion 11 forward. Magnet accommodating portions 22 are formed at the left and right ends of the visual target body 21, and cylindrical magnets 25 are accommodated in the magnet accommodating portions 22.

[0018] As shown in FIG. 4, the visual target body 21 is provided with a fitting hole 23, and the light emitting portion 11 is inserted into the fitting hole 23 to be supported by the front tip 3A of the protruding portion 3. An opening 24 is formed in front of the visual target body 21 as shown in FIG. 3, and the opening 24 communicates with the fitting hole 23. For example, by attaching a colored filter to the opening 24, the color of the light emitted from the protruding portion 3 can be changed.

[0019] An illustration body 26 can be attached to the visual target body 21. The illustration body 26 is formed in a disk shape, and as shown in FIG. 4, a magnet 28 is embedded in a magnet accommodating portion 27 formed on the rear surface. The magnet 28 is attracted to the magnet 25 of the visual target body 21, and the illustration body 26 is attached to the visual target body 21. The attachment method of the illustration body 26 is not limited to magnetic adsorption. Either one of the visual target body 21 and the illustration body 26 may be provided with a fitting pin, and the other may be provided with a fitting groove that fits into the fitting pin. The illustration body 26 may be supported on the visual target body 21 by the fitting pin and the fitting groove.

[0020] The illustration body 26 has an illustration I serving as a visual target on its surface. The illustration body 26 is formed of resin and covers the light emitting portion 11 to shield the light of the light emitting portion 11. For the illustration I, for example, animals or cartoon characters that are likely to attract the attention of the patient are selected. Also, symbols, figures, or characters may be selected for the illustration I. The illustration I may be printed or may be a sticker. Note that the illustration body 26 may not have the illustration I, and the illustration body 26 itself may be configured to attract the attention of the patient and guide the line of sight. The illustration body 26 can be attached by magnetic force so as to cover the opening 24 of the visual target 20. In the present embodiment, the light of the light emitting portion 11 is used as the visual target. When the patient is a child or the like and dislikes the glare of the light emitting portion 11, an inspection is performed with the illustration I of the illustration body 26 attached to the visual target body 21 as the visual target. In this case, the visual target 20 is constituted by the visual target body 21 and the illustration body 26. In the above embodiment, as the visual target body, either the light emitting portion 11 or the illustration body 26 can be selectively configured. However, the visual target body may be configured to include only the light emitting portion 11 or only the illustration body 26.

[0021] As described above, the line of sight guiding device 1 of the present embodiment is a line of sight guiding device 1 that guides the line of sight of a patient, and includes a hooking portion 2 that is hooked on the examiner's glasses 40, and the hooking portion 2 includes a visual target body that guides the line of sight of the patient.

[0022] According to this configuration, by simply hooking the hooking portion 2 onto the glasses 40, the line of sight of a patient in ophthalmology can be guided. Therefore, inspections and examinations can be performed hands-free with a simple configuration.

[0023] Moreover, in the line-of-sight guiding device 1 of the present embodiment, the visual target body is the light emitting portion 11. According to this configuration, the line of sight of a patient in ophthalmology can be guided by the light of the light emitting portion 11. Therefore, inspections and examinations can be performed hands-free with a simple configuration. Furthermore, the line-of-sight guiding device 1 includes a hooking portion 2 for hooking onto the glasses 40, a protruding portion 3 connected to the hooking portion 2 and protruding forward of the glasses 40, and a light emitting portion 11 disposed at the front end 3A of the protruding portion 3. According to this configuration, the protruding portion 3 is rotatable around the rotation shaft portion 8, and the position of the light emitting portion 11 in the horizontal plane can be arbitrarily adjusted. Therefore, by rotating the protruding portion 3, the position of the visual target for guiding the line of sight can be easily changed.

[0024] Moreover, the line-of-sight guiding device 1 of the present embodiment includes an illustration body 26 that shields the light of the light emitting portion 11, and the light emitting portion 11 or the illustration body 26 can be selected as the visual target body. According to this configuration, by using the illustration body 26 as the visual target for guiding the line of sight of the patient, inspections and examinations can be performed hands-free without shining light into the patient's eyes.

[0025] Moreover, in the line-of-sight guiding device 1 of the present embodiment, the hooking portion 2 is configured to be hookable to either the center of the frame of the examiner's glasses 40 or the side portion of the frame of the examiner's glasses 40. According to this configuration, inspections and examinations can be performed hands-free with a simple configuration, and the range of the direction for guiding the line of sight of the patient can be expanded.

[0026] (Configuration of the projector) FIG. 6 is a perspective view of the projector 100, and FIG. 7 is a rear view of the projector 100. In the description of the projector 100, the same components as those of the line-of-sight guidance device 1 are denoted by the same reference numerals, and the description thereof is omitted. The projector 100 of the present embodiment is attached to the frame of glasses, although not shown in the drawings. The glasses are those used by the examiner, but are not limited thereto, and may be, for example, glasses for vision tests prepared in advance for ophthalmological examinations as long as they have a spectacle frame. The projector 100 is used when the examiner examines the ears, nose, throat, etc., and is suitable as an alternative to a head mirror.

[0027] As shown in FIGS. 6 and 7, the projector 100 includes a hook portion 102, and two upper and lower protruding portions 103A and 103B supported by the hook portion 102. The two upper and lower protruding portions 103A and 103B both have a light emitting portion 11 and a switch 12, and although not shown in the drawings, they incorporate a battery. The hook portion 102 includes, at the upper part, a pair of fastening portions 105 extending in the vertical direction, a pair of locking portions 104 extending from the upper part of the fastening portions 105 in the rear-lower direction, and a bridging portion 106 bridging the upper part of the fastening portions 105. The upper protruding portion 103A is provided on the bridging portion 106.

[0028] In the present embodiment, one of the pair of fastening portions 105 extends longer and downward than the other fastening portion 105, and constitutes a slide shaft portion 120. As shown in FIG. 6, a protruding portion support member 121 is slidably supported on the axis of the slide shaft portion 120 at the lower part of the slide shaft portion 120. The protruding portion support member 121 includes an arm portion 122. An insertion portion 123 is formed at one end of the arm portion 122, and a through hole 123A is formed in the insertion portion 123.

[0029] The arm portion 122 is provided at the other end with a rotation shaft portion 8 protruding downward. The lower protruding portion 103B is rotatably supported by the rotation shaft portion 8. The lower protruding portion 103B has a rotation hole 9 formed in the vertical direction at the rear, and the rotation shaft portion 8 is inserted into the rotation hole 9. At the lower part of the slide shaft portion 120, the thicknesses of the slide shaft portion 120, the bridging portion 106, and the fastening portion 105 are substantially the same.

[0030] Although not shown in the drawings, the projector 100 is hooked on one lens frame 41 of the glasses 40 during the examination of the examinee. In the case of the above-described line-of-sight guidance device 1, as shown in FIG. 5, the lower ends of the pair of locking portions 4 are inclined outward, but in the present embodiment, the lower ends of the pair of locking portions 104 are inclined inward. According to the configuration in which the lower end is inclined inward, when the projector 100 is hooked on one lens frame 41 of the glasses 40, the tips of the pair of locking portions 104 are likely to contact the front surface of the lens that fits into the one lens frame 41, so that the stability of the support of the projector 100 with respect to the glasses 40 can be improved.

[0031] The slide shaft portion 120 is inserted into the through hole 123A at one end of the arm portion 122, and the user can move the protrusion support member 121 up and down. Since the dimensions and shape of the through hole 123A are formed in accordance with the dimensions and shape of the slide shaft portion 120, the protrusion support member 121 can be held at an arbitrary height, and the distance between the upper protrusion 103A and the lower protrusion 103B can be freely adjusted. At least a pair of the upper protrusions 103A and the lower protrusions 103B are arranged at positions facing each other with the pupil of the examinee in between.

[0032] When the examiner examines the ear, nose, throat, etc., it is important that the light of the projector 100 does not interfere with the examination and no light shadow appears at the examination site. According to the present embodiment, the distance between the upper protrusion 103A and the lower protrusion 103B can be adjusted according to the size of the pupil of the examinee. It is possible to project light from near the pupil of the examinee during the examination to the examination site such as the ear, nose, throat, etc. According to this, the light does not interfere with the examination and no light shadow is generated at the examination site. Further, the protrusions 103A and 103B are rotatable around the rotation shaft portion 8, and the position of the light emitting portion 11 in the horizontal plane can be arbitrarily adjusted, enabling more suitable light projection to the examination site.

[0033] As described above, the projector 100 of the present embodiment is used when examining ears, nose, throat, etc., and includes a hook portion 102 that is hooked on the glasses 40 of the examinee. The hook portion 102 includes a light emitting portion 3, and the light emitting portions 11 are arranged at least in a pair at positions facing each other across the pupil of the examinee. According to this configuration, the viewpoint of the examinee and the position of the examination site illuminated by the projector 100 overlap, and inspection and examination can be performed hands - free with a simple configuration.

[0034] Further, the projector 100 includes a hook portion 102 that is hooked on the glasses 40, a protruding portion 3 that is connected to the hook portion 102, and a light emitting portion 11 that is arranged at the front end 3A of the protruding portions 103A and 103B. The protruding portions 103A and 103B are arranged in a pair at positions facing each other across the pupil of the examinee. According to this configuration, the viewpoint of the examinee and the position of the examination site illuminated by the projector 100 overlap, and inspection and examination can be performed hands - free with a simple configuration.

[0035] Also, in the projector 100 according to the present embodiment, at least one of the two protruding portions 103A and 103B is variably connected to the position with respect to the pupil of the examinee. According to this configuration, the position where the light hits the examination site can be adjusted, and inspection and examination can be performed hands - free with a simple configuration.

[0036] Also, in the projector 100 according to the present embodiment, the hook portion 102 is hooked on one - eye side (frame side portion) of the glasses 40 of the examinee. According to this configuration, while leaving the field of view of one eye of the examinee, the position of the examination site illuminated by the viewpoint of the examinee and the projector 100 can be overlapped, and inspection and examination can be performed hands - free with a simple configuration. Furthermore, although the projector 100 generates heat from the light emitting element 10, since the projector 100 is configured to be detachable from the glasses 40, it is possible to suppress the glasses 40 from being heated, making inspection and examination easier.

[0037] (Another configuration of the projector) FIG. 8 is a perspective view of a projector 200 according to a modified example. In the description of the projector 200, the same components as those of the above-described line-of-sight guidance device 1 and projector 100 are denoted by the same reference numerals, and the description thereof is omitted.

[0038] The projector 200 includes a hooking portion 202. The hooking portion 202 includes a bridging portion 206 that bridges the fastening portion 105 and the slide shaft portion 120. No protruding portion is attached to the bridging portion 206, and the upper surface of the bridging portion 206 is flush with the upper surfaces of the fastening portion 105 and the slide shaft portion 120. The projector 200 includes a protruding portion support member 221 that is slidably supported by the slide shaft portion 120.

[0039] The protruding portion support member 221 includes a support portion 222 formed in a substantially C shape and an insertion portion 223 integrally formed with the support portion 222. The insertion portion 223 is formed so as to protrude rearward from the support portion 222. A through hole 223A through which the slide shaft portion 120 is inserted is formed in the insertion portion 223.

[0040] A rotation shaft portion 8 protruding downward is formed at one end on the upper side of the support portion 222, and a rotation shaft portion 8 protruding upward is formed at one end on the lower side of the support portion 222. A protruding portion 203A is rotatably supported by the rotation shaft portion 8 protruding downward, and a protruding portion 203B is rotatably supported by the rotation shaft portion 8 protruding upward. The two protruding portions 203A and 203B are arranged side by side in the vertical direction, and the lower protruding portion 203B is arranged upside down.

[0041] In the projector 200 according to the present embodiment, the two protruding portions 203A and 203B are integrally slidable in the vertical direction, and the two protruding portions 203A and 203B are rotatable around the rotation shaft portion 8. The distance between the two protruding portions 203A and 203B arranged in the vertical direction is formed to be approximately the same as the diameter of a general pupil.

[0042] As described above, in the projector 200 according to the present embodiment, the two protruding portions 203A and 203B are variably connected to the position with respect to the pupil of the examiner. According to this configuration, light can be applied to the position to be illuminated on the examination site, and inspection and examination can be performed hands-free with a simple configuration. Further, according to the shape of the glasses 40, particularly the shape of the lens frame 41, the positions of the two protrusions 3 with respect to the pupil of the examiner can be made variable.

[0043] (Other embodiments) Each of the above-described embodiments and modifications merely shows one aspect of the present invention, and arbitrary modifications and applications are possible within the scope of the present invention.

Explanation of reference numerals

[0044] 1 Line-of-sight guidance device 2, 102, 202 Hooking part 3, 103A, 103B, 203A, 203B Protrusion 3A Tip 3A Front tip 4 Locking part 5, 105 Fastening part 6, 106, 206 Bridging part 8 Rotation axis part 9 Rotation hole 10 Light-emitting element 11 Light-emitting part 20 Visual target 21 Visual target body 26 Illustration body 40 Glasses 41 Lens frame 100, 200 Light projector 121, 221 Protrusion support member I Illustration

Claims

1. A line-of-sight guidance device for guiding a patient's line of sight, comprising a hooking portion for hooking onto an examiner's glasses, wherein the hooking portion is provided with a sighting body for guiding the patient's line of sight. Line-of-sight guidance device.

2. The sighting body is a light-emitting portion, The line-of-sight guidance device according to claim 1.

3. comprising an illustration body for shielding the light of the light-emitting portion, and the sighting body can be selected from the light-emitting portion or the illustration body, The line-of-sight guidance device according to claim 2.

4. The sighting body is an illustration body, The line-of-sight guidance device according to claim 1.

5. The hooking portion is configured to be hookable either at the center of the frame of the examiner's glasses or at the side portion of the frame of the examiner's glasses. The line-of-sight guidance device according to claim 1.

6. A projector used when examining the ear, nose, throat, etc., comprising a hooking portion for hooking onto an examiner's glasses, wherein the hooking portion is provided with a light-emitting portion, and at least a pair of the light-emitting portions are arranged at positions facing each other across the examiner's pupil. Projector.

7. At least a pair of the light-emitting portions are configured to be variable in position with respect to the examiner's pupil. The projector according to claim 6.

8. The hooking portion is hooked onto the side portion of the frame of the examiner's glasses. The projector according to claim 6 or 7.

Images