JPS63260528A - Suspension apparatus of eye examination machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a suspension device for an optometry instrument, and more specifically, to a suspension device for an optometry instrument, and more specifically, an optical axis of an objective lens is arranged in a direction extending vertically through a predetermined point of an eye to be examined in a supine position. The present invention relates to a suspension device for an optometric instrument, especially for use at the bedside.

[Prior Art] Conventional mount devices for optometry instruments are generally table-top mount devices for optometry instruments, except for special devices that are small and can be carried by hand. In this general optometry instrument mount device, the frame holder fixed to the mount base etc. is placed on the frame holder or chin rest provided on the shaft in order to face the optometry instrument facing in the horizontal direction. The subject's face is fixed in an upright position, and the position and posture of the optometry instrument relative to the subject's eyes are adjusted. In this case, in order to align the optometry instrument with respect to the eye to be examined, an operating stand is provided on the side of the optometry instrument that allows for up/down, forward/backward, left/right, etc., and a power supply and observation stand for the optometry instrument. TV
When a V camera is used, a TV monitor device or the like is mechanically or electrically connected to the operation stand.

The external appearance of an embodiment of a fundus camera using a TVV camera for this type of observation is shown in FIGS. 5(A) and 5(B). In this fundus camera, the power supply part 1 and the mount base 2 are integrated, and the chin rest 4 and forehead holder part 5 are used to fix the face of the subject 3 on the left end of the mount base 2. is supported on a shaft 6, and on the other side of the mount base 2, a horizontal movement table 9 is installed via a linear motion rail LO for longitudinal and lateral movement to operate the fundus camera body 7 forward, backward, left and right using a control lever 8. ing.

On this horizontal moving table 9, a vertical frame 12 and a vertical support 13 for operating the fundus camera body 7 up and down by a vertical handle 11 are installed, and the fundus camera body 7 is attached thereon. Further, an objective lens barrel 14 is attached to this fundus camera in a manner facing the eye 3 to be examined, and a film chamber 15 for recording images is provided behind the optical axis of the objective lens. . Additionally, a TV camera section 16 is attached above the same optical axis, and a TV monitor device for observation is placed near the operation mount base 2 as shown in Fig. 5 CB), and is oriented in a direction that allows the operator to observe it. is directed towards.

An optical path diagram in the fundus camera described above is shown in FIG. Behind the objective lens 20, perforated mirrors 21. A focusing lens 22, an imaging lens 23, and an oblique movable mirror 24 are provided, and a film 25 is further provided behind them. Further, a field lens 26 and a mirror 27 are arranged on the optical axis L2 bent by the movable mirror 24, and a TVV camera imaging lens 28 and a TV image sensor 29 are arranged on the optical axis L3 bent by the mirror 27. ing.

As described above, from the objective lens 20 to the position shown by the solid line of the movable mirror 24, the image forming lens 28 is
Together with the image pickup device 29, it constitutes an optical system for using a TV device for observation.

Also, the movable mirror 24 is located on the optical axis Ll at the position indicated by the broken line.
When the camera is retracted from the optical path, the objective lens 20 to the imaging lens 23 together with the film 25 constitute a photographic optical system.

On the other hand, on the optical axis L1 passing through the center of the perforated mirror 21, the optical axis L4 intersecting at the surface of the perforated mirror, and the optical axis L5 bent by the mirror 30, an illumination lamp 31 and a condenser are arranged in order from the perforated mirror 21 in the order of distance. A lens 32, a mirror 30, a flash lamp 32, a ring slit 33, a first relay lens 34, a reflection removal plate 35 having a black dot in the center for removing harmful light, and a second relay lens 36 are arranged. From this lighting lamp 31 to the second racing 36
An optical system including the perforated mirror 21 and the objective lens 20 constitutes an illumination optical system for observation and photographing.

[Problems to be Solved by the Invention] In many of the conventional tabletop optometry instruments, it is necessary to place the subject's face horizontally facing the optometry instrument. Since the eye test is performed by fixing the patient's eye in a fixed position by installing a stand and a frame holder, the patient must get up and lower his/her upper body before placing his or her face in that position. It is difficult to examine optometry unless the patient is awake.

Therefore, there is a problem in that conventional stationary ophthalmoscopy instruments cannot be used on subjects who are lying supine on a bed, making it impossible to perform a sufficient examination. In order to be able to use this type of optometry device on a subject lying vertically on a bed, a specially devised suspension device is required. In order to avoid forcing the patient into an unreasonable posture, it is necessary to configure the optometry instrument so that it can move freely in each direction facing the subject's eye.

Furthermore, it is desired that the wooden awn be constructed in consideration of the direction of the bed of the subject who is freely placed in the horizontal direction.

Furthermore, in the suspension system of an optometry instrument in which a TV left camera is used for observation, it is necessary to consider the ease of use for the operator in the mounting position of the TV monitor device, etc.

[Means for solving problems] The present invention aims to solve these problems.

In a suspension device for an optometry instrument in which the optical axis of an objective lens is arranged in a direction that passes through a predetermined point on the examination limit in a supine position and extends in the vertical direction, an axis that passes through a predetermined point on the optical axis and extends in the horizontal direction. a first pivot part for swinging the optometry instrument around the axis of the optometry instrument; A configuration including a second pivot part that is moved is adopted.

[Function] With such a configuration, the optometry instrument can swing about a predetermined point on the eye to be examined in a plane perpendicular to each other by the first pivot section and the guide segment, and the second pivot section allows the optometry instrument to swing around a predetermined point on the eye to be examined. can be rotated horizontally,
The mobility of optometry instruments can be increased.

In addition, in the case of an optometry instrument that uses a TV left camera for observation, the TV monitor device etc. can be installed in a position that is easy to observe and operate, and the second pivot part is attached to the opposite side of the optometry instrument. Extend the arm-shaped support member to
If a monitor device or the like is attached, it can also be used as a substitute for a balancer that automatically corresponds to the mass of the optometric instrument, even if only partially.

[Example] The present invention will be described in detail below based on an example shown in one drawing.

Figure t51 is a front view of the embodiment of the present invention showing the overall configuration of the optometry instrument and the suspension device installed at the bedside, with the subject lying supine on the bed.
The figure shows a side view of the suspension device with the operator in the center, and FIG. 3 shows a top view of the suspension device of the present invention. In each figure, the optometric instrument designated by reference numeral 40 is exemplified as a fundus camera using a TV left camera having a configuration similar to that shown in FIG.

The fundus camera body 41 is arranged to face the supine subject 42, and an objective lens barrel 43 is located below the fundus camera body, and an image is recorded above the optical axis of the objective lens. A TV camera section 45 for observation is attached to the side of the same optical axis. As shown in FIG. 1, a first pivot portion 46 is provided at an appropriate position on a horizontal extension line H extending to the right from a fixed point P on the optical axis of the objective lens. This pivot part 46
An arc-shaped guide segment 48 having a center of curvature at the fixed point P is attached to one end of the segment supporting member 47.
is installed. A sliding member 49 is slidably fitted into the guide segment 48, and the fundus camera main body 41 is held by this sliding member. The fundus camera is therefore supported in the direction indicated by xl in FIG. It is possible to swing in the second direction x2, which is perpendicular to the direction. Therefore, when the fixed point P is appropriately adjusted on the subject 42, for example, near the anterior segment of the eye, it becomes possible to perform eye examination from each direction centering on the anterior segment.

On the other hand, the other end of the first pivot part 46 is connected to a second pivot part installed along the vertical line V via an arm-shaped support member 50.
The optometry instrument is connected to the pivot portion 51 of
It can be rotated as shown.

Further, an operator 70 is provided on the upper part of the support shaft of the second pivot part.
A TV monitor device 52 for observation is attached.

Since the support shaft is non-rotatable, the TV monitor device 52 can be oscillated on the support shaft as shown by x4 in FIG.
It is configured so that it can be oriented in a direction that is easy to observe.

The above-mentioned suspension device for the fundus camera 40 and TV monitor device 52 has upper and lower supports so that the operator 70 can adjust the vertical position of the fundus camera by operating the upper and lower handles 53 along the support axis of the second pivot part 51. It is attached to the top of 54 and enables fine vertical alignment.

Furthermore, a vertical frame 55 for holding the vertical column 54 is fixed to the upper surface of a horizontal moving table 57 for adjusting the position of the fundus camera in the front, rear, left, and right directions by the operator operating a control lever 56. This allows for front/back/left/right alignment.

Further, the horizontal moving table 57 has a linear motion rail 58 for longitudinal and lateral movement.
It is attached to a gantry base 59 via a gantry base 59, and this gantry base 59 is integrated with a power supply section 59'. Therefore, the power supply device is also placed at a position M that is easy for the operator to handle.

Further, the gantry base 59 including the power supply unit 59' is installed on a vertical coarse movement column 60 so as to be adjustable to an appropriate height from the floor, and this column 60 is held by a vertical coarse movement frame 61 so as to be vertically movable. . on the other hand.

A dryer house 62 is attached to the lower part of the vertical coarse movement frame, and the vertical coarse movement column 61 is moved up and down by operating an electric vertical coarse movement switch 63. The lower motor house 62 and leg frame 64 are attached to keep the entire device stable, and moving wheels 65 are also attached to allow the entire device to make coarse movements or change its position in the horizontal direction.

Next, the operation of the device configured as described above will be explained.

When examining the eye of the subject 42, first the entire apparatus is moved to the bedside via the moving wheels 65, and the height of the fundus camera 40 is coarsely adjusted via the coarse vertical movement switch 63.

Next, the horizontal moving table 57 is moved via the control lever 56.
is finely adjusted in the horizontal plane, and further finely adjusted in the vertical direction using the vertical handle 53 to set a certain point P of the optical axis near the anterior eye segment of the subject 42, for example.

In this state, the fundus camera 40 can be swung in the direction of Xl about the pivot axis of the first pivot part 46, and the arc-shaped guide segment 48
By moving along the axis, it can be swung in the direction of x2.

Eye examination can be performed from various directions centering on the anterior segment of the eye.

In addition, the fundus camera can be rotated horizontally around the vertical axis V as shown by the dotted line in FIGS. 1 and 3 via the second pivot part 51, so it can be moved to a different bedside. A similar eye examination can be performed on the subject on the opposite side.

Since each eye examination condition is observed on the TV monitor device 52, it is possible to continue a good eye examination at all times.

FIG. 4 shows another embodiment of a mounting device for a TV monitor tray, etc. In this case, the arm-shaped support member is extended in the opposite direction to the direction of connection with the first pivot portion 46 to which the optometry instrument is attached, and the TV monitor device 52 and power supply device 59' are placed above it. It is configured to automatically function as a balancer for the mass of the optometry instrument. However, in this case, when the optometry instrument is rotated by the second pivot part 51, there will be a problem in that the screen and operation panel, if any, will also move in the same direction. A third pivot 71 is provided between the arm-shaped support member 50 and the arm-shaped support member 50 so that the direction can be corrected.

[Effects of the Invention] As explained above, the device according to the present invention allows the patient to be examined while lying on his/her back at the bedside without significantly changing the operating method and without using a large device. On the other hand, it becomes possible to move the optometric instrument in various directions, and it also becomes possible to easily move the optometric instrument in other bed directions.

[Brief explanation of the drawing]

Fig. 1 is a front view of a suspension system for a supine subject with a fundus camera attached, Fig. 2 is a side view thereof, Fig. 3 is a top view of the main parts, and Fig. 4 is another embodiment. A front view showing
FIG. 5(A) is a side view of a conventional device, FIG. 5(CB) is a front view thereof, and FIG. 6 is an optical layout diagram of a fundus camera. 40... Fundus camera 46... First pivot part 51... Second pivot part 59... Frame base 59'... Power supply device 71.
...Third pivot section Figure 2 Figure 3 Figure 6 Figure 4 Procedural amendment (salmon) May 1988 18 E

Claims (1)

[Scope of Claims] 1) In a suspension device for an optometry instrument in which the optical axis of an objective lens is arranged in a direction extending vertically through a predetermined point on the subject's eye in a supine posture, the objective lens passes through a predetermined point on the optical axis. a first pivot part for swinging the optometry instrument around an axis extending in the horizontal direction; and a first pivot part for swinging the first pivot part around an axis perpendicular to the axis of the first pivot part. A suspension device for an optometric instrument, comprising: a second pivot section for swinging the optometric instrument in a horizontal plane. 2) A TV monitor device for observing an optometry instrument is attached above the second pivot part on an extension of the swing axis of the second pivot part, according to claim 1. suspension system for optometry instruments. 3) A TV monitor device and a power supply device of an optometry instrument are attached to the arm-shaped support member that rotates while holding the second pivot portion.
Suspension device for an optometric instrument as described in Section. 4) In a suspension device for an optometry instrument, in which the optical axis of the objective lens is arranged in a direction that passes through a predetermined point on the subject's eye in a supine position and extends in the vertical direction, the objective lens passes through a predetermined point on the optical axis and extends in the horizontal direction. a first pivot part for swinging the optometry instrument about an axis; one end of the pivot part is coupled to the first pivot part and is perpendicular to the swing direction of the first pivot part about the predetermined point in a vertical plane; an arcuate guide segment for swinging the optometric instrument in a direction; and swinging the first pivot section about an axis perpendicular to the axis of the first pivot section to swing the optometric instrument in a horizontal plane. A suspension device for an optometric instrument, comprising: a second pivot portion. 5) A TV monitor device for observing an optometry instrument is attached above the second pivot part on an extension of the swing axis of the second pivot part. suspension system for optometry instruments. 6) A TV monitor device and a power supply device of an optometry instrument are attached to the arm-shaped support member that rotates while holding the second pivot portion.
Suspension device for an optometric instrument as described in Section.