JP2018175657A5

JP2018175657A5 -

Info

Publication number: JP2018175657A5
Application number: JP2017083060A
Authority: JP
Filing date: 2017-04-19
Publication date: 2020-07-09
Anticipated expiration: 2037-04-19

Description

本発明の眼科装置の一つは、測定光を照射した被検眼からの戻り光を用いて被検眼を撮影するための光学系と、被検眼と対向する位置に配置される対物レンズの倍率の変更に応じて、前記光学系に含まれる調整部材の移動可能範囲の位置を変更する制御を行う制御手段と、を有する。
本発明の眼科装置の一つは、測定光を照射した被検眼からの戻り光を用いて被検眼を撮影するための光学系と、前記光学系における撮影に関する画角の変更に対応する倍率の変更に応じて、前記光学系に含まれる調整部材の移動可能範囲の位置を変更する制御を行う制御手段と、を有する。
また、本発明は、上述した眼科装置の制御方法、及び、当該制御方法をコンピュータに実行させるプログラムを含む。 One of the ophthalmologic apparatus of the present invention, an optical system for photographing a subject's eye using a return light from the eye irradiated with measurement light, the magnification of the objective lens which is disposed opposite the eye to be examined having in response to change, before SL and a control means for controlling to change the position of the movable range of the adjusting members included in the optical science system, the.
One of the ophthalmologic apparatus of the present invention is an optical system for photographing the subject's eye using the return light from the subject's eye irradiated with the measurement light, and a magnification corresponding to the change of the angle of view related to the photographing in the optical system. Control means for performing control to change the position of the movable range of the adjusting member included in the optical system according to the change.
The invention also includes a control method of the above-mentioned ophthalmic device, and the Help program to execute the control method in the computer.

Claims

An optical system for photographing the subject's eye using the return light from the subject's eye irradiated with the measurement light,
In accordance with the change of the magnification of the objective lens which is arranged at a position opposed to the subject's eye, and a control means for controlling to change the position of the movable range of the adjusting members included in the prior SL optical science system,
An ophthalmic device comprising:

An optical system for photographing the subject's eye using the return light from the subject's eye irradiated with the measurement light,
In accordance with the change of the rate corresponding to the change of the view angle for shooting in the optical system, and a control means for controlling to change the position of the movable range of the adjusting members included in the prior SL optical science system,
An ophthalmic device comprising:

Wherein the optical system,
Provided between the front Symbol light source and the objective lens, wherein is configured includes a focus adjustment member for adjusting the focus of the measurement light with respect to the eye,
The control means, in accordance with the change of the magnification, ophthalmologic apparatus according to claim 1 or 2, characterized in that the control for changing the position of the movable range of the focus adjusting member.

Wherein, when the objective lens that will be placed onto the eye positions opposed to is changed to the second objective lens having a high magnification than said first objective lens from the first objective lens, the first The position of the movable range of the focus adjusting member when the second objective lens is arranged is farther from the objective lens than the position of the movable range of the focus adjusting member when the second objective lens is arranged. The ophthalmologic apparatus according to claim 3 , wherein the ophthalmologic apparatus is changed in direction.

Wherein, when the objective lens that will be placed onto the eye positions opposed to is changed to the second objective lens having a high magnification than said first objective lens from the first objective lens, the first Change the size of the movable range of the focus adjusting member when the second objective lens is arranged to be larger than the size of the movable range of the focus adjusting member when the second objective lens is arranged. further ophthalmic apparatus according to claim 3 or 4, characterized in that.

The control means sets a reference position of the focus adjustment member within the movable range,
The optical system further includes a focus correction member provided in an optical path of the measurement light so that a reference position of the focus adjustment member does not change with respect to a specific diopter of the eye to be inspected. The ophthalmologic apparatus according to any one of claims 3 to 5 .

The optical system is an OCT optical system including an optical path of the measurement light and an optical path of reference light,
Is configured include a reference light adjustment member for adjusting an optical path length before Symbol reference light,
The control means, in accordance with the change of the magnification, ophthalmologic apparatus according to any one of claims 1 to 6, characterized in that the control for changing the position of the movable range of the reference light adjustment member ..

Wherein, when the objective lens that will be placed onto the eye positions opposed to is changed to the second objective lens having a high magnification than said first objective lens from the first objective lens, the first The position of the movable range of the reference light adjusting member when the second objective lens is arranged, rather than the position of the movable range of the reference light adjusting member when the objective lens is arranged. The ophthalmologic apparatus according to claim 7 , wherein the ophthalmologic apparatus is changed in a direction away from.

The control means sets a reference position of the reference light adjusting member within the movable range,
When said subject's eye and an objective lens that will be placed on the opposite position is changed, the variation in the reference position of the reference light adjustment member associated with this change, and the and the objective lens due to the change subject's eye The ophthalmologic apparatus according to claim 7 or 8 , wherein the change amount is smaller than the change amount in the distance.

Wherein, when the objective lens that will be placed onto the eye positions opposed to is changed to the second objective lens having a high magnification than said first objective lens from the first objective lens, the first The reference position of the reference light adjusting member when the second objective lens is arranged is changed from the reference position of the reference light adjusting member when the second objective lens is arranged in a direction away from the objective lens. The ophthalmologic apparatus according to claim 9 , wherein:

Housing comprising a front Symbol optical system is constituted,
Wherein, ophthalmologic apparatus according to any one of claims 1 to 10, characterized in that the control for changing the position of the movable range of the housing.

Wherein, when the objective lens that will be placed onto the eye positions opposed to is changed to the second objective lens having a high magnification than said first objective lens from the first objective lens, the first The position of the movable range of the housing when the second objective lens is arranged in a direction away from the eye to be examined, rather than the position of the movable range of the housing when the objective lens is arranged. The ophthalmic apparatus according to claim 11, which is modified.

The control means performs control to move the optical system to within the movable range when the position of the optical system is located outside the movable range. to 12 ophthalmic apparatus according to any one of.

Wherein, ophthalmologic apparatus according to any one of claims 1 to 13, characterized in that to set a reference position of the optical system within the scope of the movable range.

When the position of the optical system is outside the movable range, the control means performs control to move the optical system to the reference position within the movable range. The ophthalmic device according to claim 14 , wherein

The ophthalmologic apparatus according to claim 13 or 14 , wherein the control unit controls the position of the optical system so as to remain within the movable range.

17. The control unit controls to change the position of the movable range of the adjusting member to a position corresponding to the change of the working distance associated with the change of the magnification. The ophthalmic device according to the item.

The ophthalmic device is
As an objective lens arranged at a position facing the eye to be inspected, a plurality of objective lenses having different magnifications are configured to be replaceable,
The ophthalmologic apparatus according to claim 1, further comprising an acquisition unit that acquires a magnification of the objective lens that is arranged at a position facing the eye to be inspected.

An SLO optical system for scanning the illumination light emitted from the SLO light source on the subject's eye by a scanning means;
A fixation target optical system for scanning the fixation light emitted from the fixation lamp in the eye to be examined by the scanning means,
In accordance with the timing of scanning the illumination light in the eye to be examined by the scanning means, a fixation target control means for performing light emission control of the fixation lamp,
Further having
The ophthalmologic apparatus according to any one of claims 1 to 18, wherein the SLO optical system and the fixation target optical system share a part of an optical member including the scanning unit.

A control method of an ophthalmologic apparatus having an optical system for photographing an eye to be inspected using return light from the eye to be inspected, which is irradiated with measurement light ,
In accordance with the change of the magnification of the objective lens that will be placed at a position opposed to the subject's eye, the control steps for controlling to change the position of the movable range of the adjusting members included in the prior SL optical science system
A method for controlling an ophthalmologic apparatus, comprising:

A control method of an ophthalmologic apparatus having an optical system for photographing an eye to be inspected using return light from the eye to be inspected, which is irradiated with measurement light ,
In accordance with the change of the rate corresponding to the change of the view angle for shooting in the optical system, the control steps for controlling to change the position of the movable range of the adjusting members included in the prior SL optical science system
A method for controlling an ophthalmologic apparatus, comprising:

Claim 20 or Help program to execute the control method in the computer of the ophthalmologic apparatus according to 21.