JP2002191558A5 - - Google Patents
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- JP2002191558A5 JP2002191558A5 JP2001317822A JP2001317822A JP2002191558A5 JP 2002191558 A5 JP2002191558 A5 JP 2002191558A5 JP 2001317822 A JP2001317822 A JP 2001317822A JP 2001317822 A JP2001317822 A JP 2001317822A JP 2002191558 A5 JP2002191558 A5 JP 2002191558A5
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- Prior art keywords
- light
- target
- visual
- illumination light
- illumination
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Description
【０００５】
【課題を解決するための手段】
上記課題を解決するために、本発明は以下のような構成を備えることを特徴とする。
（１） 視標呈示手段からの視標光束がミラー面で反射した後，視標光側が筐体開口部の後方に斜設されたビームスプリッタで反射して，筐体から離れた位置にある被検眼に向かう省スペース型視機能検査装置において、コントラスト切換用の照明光源と該照明光源の照明光を拡散させる拡散板とを有するコントラストテスト用照明手段と、可視域の光束の一部反射し一部を透過する性質を持ち視標光束と照明光束とを合成する合成ミラーと、前記コントラストテスト用照明手段による照明光量と視標光束の光量との光量比を所定のコントラスト比に従って切換える光量比切換手段と、を有することを特徴とする。
（２） 被検眼に視標を呈示して視機能を検査する省スペース型視機能検査装置において、視標光の投射光軸上に配置された第１ハーフミラーと、該第１ハーフミラーによって視標光の投射光軸と略同軸にされる投射光軸を持つ照明光源と、該照明光源からの照明光と視標光とを反射する凹面鏡と、該凹面鏡と前記第１ハーフミラーとの間に配置され前記凹面鏡で反射された視標光及び照明光を被検眼に向けて反射する第２ハーフミラーと、視標光と照明光との光量比を所定のコントラスト比に従って変化させる制御手段と、を有することを特徴とする。
（３） 被検眼に視標を呈示して視機能を検査する省スペース型視機能検査装置において、視標光を反射する凹面鏡と、該凹面鏡で反射された視標光を被検眼に向けて反射するハーフミラーと、該ハーフミラーによって視標光の投射光軸と略同軸にされる投射光軸を持つ照明光源と、該照明光源からの照明光と視標光との光量比を所定のコントラスト比に従って変化させる制御手段と、を有することを特徴とする。
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned subject, the present invention is characterized by having the following composition.
(1) After the target luminous flux from the target presenting means is reflected by the mirror surface, the target light side is reflected by the beam splitter obliquely installed at the rear of the opening of the housing and is away from the housing In the space-saving visual function inspection device directed to the eye to be inspected, a portion for reflection test of contrast test including illumination light source for contrast switching and a diffusion plate for diffusing illumination light of the illumination light source; A combination mirror having a property of transmitting a part and combining a target light flux and an illumination light flux, and a light quantity ratio switching the light quantity ratio between the illumination light quantity by the contrast test illumination means and the light quantity of the target light flux according to a predetermined contrast ratio And switching means.
(2) A space-saving visual function inspection apparatus for presenting a visual target to an eye to be examined and testing the visual function, comprising: a first half mirror disposed on a projection optical axis of the visual light; and the first half mirror An illumination light source having a projection optical axis substantially coaxial with a projection optical axis of visual target light, a concave mirror for reflecting illumination light from the illumination light source and the visual target light, the concave mirror and the first half mirror A second half mirror disposed between the target mirror and reflecting light reflected by the concave mirror toward the eye to be examined, and control means for changing the light amount ratio between the target light and the illumination light according to a predetermined contrast ratio And.
(3) In a space-saving visual function inspection apparatus for presenting a visual target to an eye to be examined and testing the visual function, a concave mirror for reflecting the visual light and the visual target light reflected by the concave mirror are directed to the eye An illumination light source having a reflecting half mirror and a projection light axis that is made substantially coaxial with the projection light axis of the sight light by the half mirror, and a light amount ratio of illumination light from the illumination light source to the sight light And controlling means for changing in accordance with the contrast ratio.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001317822A JP3850254B2 (en) | 2000-10-20 | 2001-10-16 | Space-saving visual function inspection device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-327010 | 2000-10-20 | ||
| JP2000327010 | 2000-10-20 | ||
| JP2001317822A JP3850254B2 (en) | 2000-10-20 | 2001-10-16 | Space-saving visual function inspection device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002191558A JP2002191558A (en) | 2002-07-09 |
| JP2002191558A5 true JP2002191558A5 (en) | 2005-06-09 |
| JP3850254B2 JP3850254B2 (en) | 2006-11-29 |
Family
ID=26602835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001317822A Expired - Fee Related JP3850254B2 (en) | 2000-10-20 | 2001-10-16 | Space-saving visual function inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3850254B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4717561B2 (en) | 2005-09-02 | 2011-07-06 | 株式会社トプコン | Ophthalmic examination program, ophthalmic examination apparatus and ophthalmic examination system |
| JP5085957B2 (en) * | 2007-02-26 | 2012-11-28 | 株式会社ニデック | Target presentation device |
| JP5048457B2 (en) | 2007-11-02 | 2012-10-17 | 株式会社ニデック | Target presentation device |
| JP5179202B2 (en) * | 2008-01-11 | 2013-04-10 | 株式会社ニデック | Ophthalmic equipment |
| JP5079575B2 (en) * | 2008-03-31 | 2012-11-21 | 株式会社ニデック | Target presentation device |
| JP5870552B2 (en) * | 2010-08-27 | 2016-03-01 | 株式会社ニデック | Target presentation device |
| JP6471403B2 (en) * | 2013-01-31 | 2019-02-20 | 株式会社ニデック | Optometry equipment |
| EP3298952B1 (en) * | 2016-09-22 | 2019-07-17 | Essilor International | Optometry device |
| JP7241579B2 (en) * | 2019-03-26 | 2023-03-17 | 株式会社トプコン | optotype presentation device |
| JP7429561B2 (en) | 2020-02-20 | 2024-02-08 | 株式会社トプコン | Visual target presentation device |
-
2001
- 2001-10-16 JP JP2001317822A patent/JP3850254B2/en not_active Expired - Fee Related
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