JP5613574B2 - Ophthalmic equipment - Google Patents

Description

  The present invention relates to an ophthalmologic apparatus including a chin rest for receiving a subject's jaw and a forehead receiving a subject's forehead.

  2. Description of the Related Art Conventionally, an ophthalmologic apparatus that automatically performs alignment and then measures the eye refractive power of an eye to be examined is known (see Patent Document 1).

  Such an ophthalmologic apparatus is provided with a measurement optical system for measuring eye refractive power and an alignment detection means for detecting alignment of the measurement optical system with respect to the eye to be examined.

  Further, this ophthalmologic apparatus is provided with a chin rest on which the subject's chin is placed, and the measuring part can be moved left and right, up and down, and back and forth with respect to the chin rest.

Japanese Patent No. 3676055

  In such an ophthalmologic apparatus, when the subject places the face on the chin rest, whether the subject's face is correctly placed on the chin rest, that is, the subject's forehead is against the forehead. There was no way to check if it was in the correct position.

  For this reason, for example, when measuring the right eye, when the measurement unit is moved to the right side, the right eye is displayed at a position far from the center of the monitor screen, and the subject's face is again placed on the chin rest. I will have you put it on again. For this reason, there existed a problem which the efficiency of a test | inspection and a measurement fell.

  An object of the present invention is to provide an ophthalmologic apparatus that can improve the efficiency of examination and measurement.

According to the first aspect of the present invention, there is provided an apparatus main body having an optometry unit for inspecting or measuring an eye, a chin rest on which the subject's chin is placed, and a forehead of the subject placed on the chin rest. and a forehead receiver shed, said apparatus main body, left and right with respect to the chin rest and Gaku受portion thus a fixed subject's face, upper and lower, in ophthalmic apparatus movable back and forth,
Presenting means for presenting a center position of the forehead receiving unit in the left-right direction is provided.

  According to this invention, the efficiency of inspection and measurement can be improved.

It is the side view which showed the external view of the ophthalmologic apparatus which concerns on this invention. (A) is the front view which showed the forehead part of the ophthalmologic apparatus, (B) is a perspective view, (C) is a rear view, (D) is a perspective view of figure (C). It is sectional drawing which showed the structure of the forehead receiving part of 2nd Example. It is explanatory drawing which showed the other example of 2nd Example. It is sectional drawing which showed the structure of the forehead receiving part of 3rd Example. It is explanatory drawing which showed the other example of 3rd Example. It is sectional drawing which showed the structure of the forehead receiving part of 4th Example. It is explanatory drawing which showed the other example of 4th Example. It is sectional drawing which showed the structure of the forehead receiving part of 5th Example. It is explanatory drawing which showed the spot light projected on the forehead. It is explanatory drawing which showed the state from which scattered light is radiate | emitted from the clearance gap between the forehead and the front surface 5A of the forehead receiving part 50. FIG. It is explanatory drawing at the time of seeing the state of the scattered light of FIG. 11 from the back. It is explanatory drawing which showed the other example of 5th Example. It is explanatory drawing at the time of seeing the state of the scattered light of FIG. 13 from the back. It is explanatory drawing which showed 6th Example.

  Hereinafter, an embodiment which is an embodiment of an ophthalmologic apparatus according to the present invention will be described with reference to the drawings.

[First embodiment]
In FIG. 1, 1 is an ophthalmologic apparatus. The ophthalmologic apparatus 1 is generally configured by a base portion 2 provided on a base K, an optometry head 3, and a chin rest (chin rest) 4. The chin rest portion 4 is provided with a forehead receiving portion 50 integrally therewith.

  The subject is inspected with the chin placed on the chin holder 4 and the forehead 50 placed on the forehead.

  An optometry unit 6 is provided inside the optometry head 3 as indicated by a broken line. The optometry unit 6 has a known observation optical system for observation and photographing, and a measurement optical system for measuring refractive power. Is provided. The optometry unit 6 allows the anterior eye part of the subject, the cornea of the eye to be examined, the fundus oculi, and the like to be observed and photographed, and the fundus can be inspected.

  The optometry head 3 is driven in the up / down / left / right / front / rear direction with respect to the eye to be examined by operating a monitor unit 10 provided on the top 9 of the optometry head 3. In other words, the optometry head 3 is movable in the up / down / left / right / front / rear direction with respect to the face of the subject fixed by the chin receiving portion 4 and the forehead receiving portion 50.

  The monitor unit 10 displays the anterior segment of the subject during measurement or examination.

  As shown in FIGS. 2 (A) to 2 (D), a support portion 20 having a substantially Y-shape in front view is attached to the front surface of the base K. The upper portion of the support portion 20 is divided into left and right portions. Branch portions 21 and 21 are formed, and a horizontal portion 22 is formed between the branch portions 21 and 21. A cylindrical portion 23 is formed at the center of the horizontal portion 22, and the chin rest 4 is provided on the cylindrical portion 23.

  A frame 24 surrounding the chin rest 4 is integrally formed at the distal ends of the branch portions 21 and 21.

  The frame 24 includes support portions 24A and 24A extending upward from the tip portions of the branch portions 21 and 21, and a connecting portion 24B connecting the support portions 24A and 24A. A forehead pad 5 is provided in the connecting part 24B, and the forehead receiving part 50 is configured by the forehead pad 5 and the connecting part 24B.

  On the front surface 5A and the back surface 5B of the frame receiving portion 50, that is, on the front surface 5A of the forehead pad 5 and the rear surface (back surface) 5B of the connecting portion 24B, a center line is a center mark that indicates the center position of the frame receiving portion 50 with respect to the left-right direction (Presentation means) L1 and L2 are described. The center lines L1 and L2 are described with printing or sticking, for example.

  Since the center line L2 is marked on the back surface 5B of the forehead receiving part 50, when the subject puts his chin on the chin receiving part 4 and applies the forehead to the forehead receiving part 50, the face of the subject, that is, the forehead is Whether or not it is correctly applied to the forehead receiving portion 50 can be confirmed by looking at the center line L2 and the face of the subject. For this reason, the efficiency of measurement can be improved.

  In addition, the subject puts his / her chin on the chin rest 4 so that the center line L1 written on the front surface 5A of the forehead cradle 50 is at the center position of the forehead (face). Since it can be applied, it is possible to prevent the face from being placed on the chin rest portion 4 in the wrong position or direction, and thus the efficiency of measurement can be improved.

In the first embodiment, the center lines L1 and L2 are shown on the front surface 5A and the back surface 5B of the forehead receiving portion 50, but either one may be used. Moreover, it does not necessarily have to be a line, and may be a center mark such as a triangle, a square or a circle, or another center mark.
[Second Embodiment]
FIG. 3 shows the presenting means 2L of the second embodiment. This presenting means 2L has line portions 2L1, 2L2 that form two center lines extending in the vertical direction. The upper part is connected by the connecting part 2R. The line portions 2L1 and 2L2 have a predetermined thickness and are three-dimensional. The presenting means 2L is, for example, formed of a resin in a clip shape, and is attached to the forehead receiving portion 50 with the forehead receiving portion 50 sandwiched between the line portions 2L1, 2L2.

  A front surface 5A of the frame receiving portion 50 is formed with a groove 5m extending in the vertical direction. The groove 5m has a line portion 2L1, and the surface 2L1a of the line portion 2L1 slightly protrudes from the front surface 5A of the frame receiving portion 50. When the subject's forehead is applied to the front surface 5A of the forehead receiving portion 50, the forehead hits the line portion 2L1 to know the position of the line portion 2L1, and the subject himself / herself finds the center position of the forehead and the line portion 2L1. The face can be placed on the chin rest portion 4 so as to match.

  Further, since the line portion 2L2 protrudes from the back surface 5B of the forehead receiving portion 50 by a predetermined thickness, the examiner can confirm the position of the line portion 2L2 also from the side of the optometry head 3.

In the second embodiment, two line portions 2L1 and 2L2 are provided, but either one of the line portions may be used.
[Other examples]
FIG. 4 shows another example of the second embodiment, in which a line part 2L3 extending further upward is provided on the upper part of the line part 2L2, and the center position of the forehead receiving part 50 is seen from where. It is also made to understand.
[Third embodiment]
FIG. 5 shows the presenting means 3L of the third embodiment. The presenting means 3L includes a transparent resin light guide member 3D and a light source 30 such as an LED.

  The light guide member 3D includes line portions 3D1 and 3D2 that form a center line, a connection portion 3R that connects the line portions 3D1 and 3D2, and a light guide portion 3D3 that is formed in the connection portion 3R.

  A hole 5H is formed in the upper portion of the forehead receiving portion 50, the light source 30 is disposed in the bottom portion of the hole 5H, and the light guide portion 3D3 is inserted in the upper portion of the hole 5H.

  The light emitted from the light source 30 enters from the light guide 3D3 and is irregularly reflected on the surfaces of the line portions 3D1 and 3D2 of the light guide member 3D, so that the surfaces of the line portions 3D1 and 3D2 and the connecting portion 3R emit light. The examiner and the subject can recognize the center position of the forehead receiving portion 50 by the light emission of the line portions 3D1 and 3D2 and the connecting portion 3R.

In the third embodiment, two line portions 3D1 and 3D2 are provided, but either one of the line portions may be provided. Further, the connecting portion 3R may not emit light.
[Other examples]
FIG. 6 shows another example of the third embodiment. A line portion 3D4 extending upward is provided on the upper portion of the line portion 3D2, and the surface of the line portion 3D4 is irregularly reflected so as to emit light. It is a thing.
[Fourth embodiment]
FIG. 7 shows the presenting means 4L of the fourth embodiment. The presenting unit 4L includes a light guide member 3D, a light source 30, and a switch S1. The switch S1 is provided in the forehead receiving part 50, and the contact Sa of the switch S1 is projected forward from the front surface 5A of the forehead receiving part 50.

  The light source 30 is turned off when the contact Sa of the switch S1 hits the forehead of the subject. This turning off prevents the light from the light source 30 from interfering with the measurement.

  In the fourth embodiment, the switch S1 is provided in the forehead receiving portion 50. However, the switch S1 may be provided in the chin receiving portion 4 and turned off when the jaw is placed on the chin receiving portion 4.

In the fourth embodiment, the light source 30 is turned off when the subject's forehead approaches the forehead receiving portion 50, but the light source 30 may be turned on. In this case, when a certain period of time has elapsed since lighting, it is determined that the forehead has been applied to the forehead receiving unit 50 at the correct position and is turned off.
[Other examples]
FIG. 8 shows another example of the fourth embodiment, in which a line portion 3D4 is provided on the light guide member 3D so that the examiner can further understand the center position of the forehead receiving portion 50. Is.
[Fifth embodiment]
FIG. 9 shows a projection optical system 40 which is the presenting means of the fifth embodiment. The projection optical system 40 projects the center mark onto the subject's forehead, and is provided in a hole 60 provided at the center of the forehead receiving portion 50 (center position with respect to the left-right direction).

  The projection optical system 40 includes a light source 41 such as a light emitting diode, and a collimator lens 42 that converts light emitted from the light source 41 into a parallel light flux.

  The light beam emitted from the light source 41 is collimated by the collimator lens 42 and projected as a circular spot light H as a center mark on the subject's forehead Eh as shown in FIG.

  The examiner views the spot light H projected on the subject's forehead Eh before the subject's forehead Eh is applied to the forehead pad 5, so that the center position of the forehead Eh is It can be determined whether or not the subject's face is placed on the chin rest 4 so as to be in the center position. If it is not correctly mounted, it can be immediately remounted. For this reason, the efficiency of measurement can be improved.

  Since the subject can determine the center using the hole 60 as the center mark of the forehead receiving portion 50, the subject can quickly place the jaw on the chin receiving portion 4 at the correct position and hit the forehead Eh against the forehead rest 5. .

  In the fifth embodiment, the circular spot light H is projected onto the subject's forehead Eh. However, the spot light H is not necessarily circular, and may be, for example, a star shape or another shape.

  Further, when the subject's forehead Eh is applied to the forehead pad 5, as shown in FIG. 11, the forehead Eh does not block the hole 60 provided in the forehead receiving part 50, so that the forehead Eh and the forehead are received. The reflected light reflected by the forehead Eh from the gap between the front surface 5A of the portion 50 becomes scattered light F1 and scatters upward and obliquely upward as shown in FIGS. Since the emission position Fp of the scattered light F1 indicates the center position of the forehead receiving part 50, even after the subject's forehead Eh is applied to the forehead rest 5, the center position of the forehead Eh remains at the forehead receiving part 50. It is possible to determine whether or not the subject's face is placed on the chin rest 4 so that the center position of the subject is positioned correctly.

In the fifth embodiment, similarly to the fourth embodiment and the other examples of the fourth embodiment, the switch S1 is provided in the forehead receiving portion 50 and the chin receiving portion 4, and the contact Sa of the switch S1 is the forehead of the subject. The light source 41 may be turned off or turned on when it is pushed by hitting or when the jaw is placed.
[Other examples]
FIG. 13 shows another example of the fifth embodiment. In this other example, a hole 61 that extends upward from the hole 61 and communicates with the hole 60 is formed in the frame receiving portion 50. From this, a part of the light from the light source 41 is always leaked as scattered light F2.

According to this other example, even if the hole 60 is blocked by the forehead Eh, the scattered light F2 is emitted from the hole 61 as shown in FIG. It is possible to reliably determine whether or not the subject's face is placed on the chin rest 4 so that the center position is reached.
[Sixth embodiment]
FIG. 15 shows a sixth embodiment. In this sixth embodiment, a notch 51 is provided in the left corner (in FIG. 15) of the upper portion of the forehead receiving portion 50, and a hole 52 is formed in the notch 51. The projection optical system 40 is provided in the hole 52.

  In the sixth embodiment, in addition to illuminating the front with spot light, the notch 51 is also illuminated obliquely upward. This oblique upward illumination is performed by light passing near the outer periphery of the lens 42 or light leaking from the periphery of the lens 42.

  According to the sixth embodiment, the same effect as that of the fifth embodiment can be obtained.

  In the sixth embodiment, the switch S1 is provided in the forehead receiving portion 50 and the chin receiving portion 4 similarly to the fourth embodiment and the other examples of the fourth embodiment, and the contact Sa of the switch S1 is the forehead of the subject. The light source 41 may be turned off or turned on when it is pushed by hitting or when the jaw is placed.

  The present invention is not limited to the above-described embodiments, and design changes and additions are permitted without departing from the spirit of the invention according to each claim of the claims.

3 Optometrist head (device main body)
4 chin rest (chin rest)
5 Forehead 6 Optometry unit 40 Projection optical system (presentation means)
50 Forehead L1 Center line (Center mark: Presentation means)
L2 Center line (Center mark: Presentation method)

Claims (11)

An apparatus main body having an optometry unit for inspecting or measuring the subject eye, a chin rest for placing the subject's chin, and a forehead receiving portion for receiving the forehead of the subject placed on the chin rest the apparatus main body, left and right with respect to the chin rest and Gaku受portion thus a fixed subject's face, upper and lower, in ophthalmic apparatus movable back and forth,
An ophthalmologic apparatus comprising a presenting unit for presenting a center position of the forehead receiving unit in the left-right direction.   The ophthalmologic apparatus according to claim 1, wherein the presenting unit is a center mark written on a back surface or a front surface of the forehead receiving unit.   The ophthalmic apparatus according to claim 2, wherein the center mark has a thickness.   The ophthalmologic apparatus according to claim 2, wherein the center mark emits light.   The light emission of the center mark is stopped when the subject's chin is placed on the chin rest or when the subject's forehead approaches the forehead receiving portion. Ophthalmic equipment.   The center mark emits light when the subject's chin is placed on the chin rest or when the subject's forehead approaches the forehead receiving portion. The ophthalmic device described.   The ophthalmologic apparatus according to claim 1, wherein the presenting unit is a projection optical system that projects a center mark indicating a center position between the left and right of the forehead receiving unit on the forehead of the subject.   The ophthalmologic apparatus according to claim 7, wherein the projection optical system is provided in the forehead receiving unit.   The light source of the projection optical system is turned off when the subject's chin is placed on the chin rest or when the subject's forehead approaches the forehead receiving portion. The ophthalmic apparatus according to claim 8.   The light source of the projection optical system is turned on when the subject's chin is placed on the chin rest or when the subject's forehead approaches the forehead receiving portion. The ophthalmic apparatus according to claim 8.   The ophthalmologic according to any one of claims 8 to 10, wherein when the subject puts a forehead on the forehead receiving part, light from the projection optical system leaks at least upward. apparatus.