JPS6417207U - - Google Patents
Info
- Publication number
- JPS6417207U JPS6417207U JP8495688U JP8495688U JPS6417207U JP S6417207 U JPS6417207 U JP S6417207U JP 8495688 U JP8495688 U JP 8495688U JP 8495688 U JP8495688 U JP 8495688U JP S6417207 U JPS6417207 U JP S6417207U
- Authority
- JP
- Japan
- Prior art keywords
- optotype
- eye examination
- light
- examination according
- peripheral frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 3
- 230000004907 flux Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
Description
図面は本考案に係る眼検査用視標装置の実施例
を示すものであり、第１図は第１の実施例の要部
斜視図、第２図は第２の実施例の要部斜視図であ
る。
符号１は透過型液晶視標、２は光源、３は枠部
、４，５は反射ミラー、６は拡散板、７は遮光部
材、８は光フアイバ束、Ｓは被検眼である。
The drawings show an embodiment of the optotype device for eye examination according to the present invention, and FIG. 1 is a perspective view of the main part of the first embodiment, and FIG. 2 is a perspective view of the main part of the second embodiment. It is. Reference numeral 1 is a transmission type liquid crystal optotype, 2 is a light source, 3 is a frame portion, 4 and 5 are reflective mirrors, 6 is a diffuser plate, 7 is a light shielding member, 8 is an optical fiber bundle, and S is an eye to be examined.
Claims (1)
の周囲に不透明の周辺枠部を設けた透過型視標と
、該視標を背後から直接又は第１の導光手段を介
して照明するための光源と、該光源からの光束の
一部を観察側から前記周辺枠部を照射するための
第２の導光手段とを具備することを特徴とする眼
検査用視標装置。 ２ 前記視標を透過型液晶とした実用新案登録請
求の範囲第１項に記載の眼検査用視標装置。 ３ 前記視標を透過型エレクトロクロミツク材料
とした実用新案登録請求の範囲第１項に記載の眼
検査用視標装置。 ４ 前記第１の導光手段を前記視標の背後に設け
た反射ミラーとした実用新案登録請求の範囲第１
項に記載の眼検査用視標装置。 ５ 前記第２の導光手段を前記視標の観察側に設
けた反射ミラーとした実用新案登録請求の範囲第
１項に記載の眼検査用視標装置。 ６ 前記反射ミラーは前記視標を照明しないよう
に一部遮光機能を有するようにした実用新案登録
請求の範囲第５項に記載の眼検査用視標装置。 ７ 前記第２の導光手段を複数本の光フアイバと
した実用新案登録請求の範囲第１項に記載の眼検
査用視標装置。[Claims for Utility Model Registration] 1. A device for performing an eye examination using an optotype, including a transmissive optotype having an opaque peripheral frame around the optotype, and a transmissive optotype provided with an opaque peripheral frame, and the optotype being directly or An eye examination characterized by comprising a light source for illuminating through a light means, and a second light guiding means for irradiating a part of the luminous flux from the light source to the peripheral frame from the observation side. optotype device. 2. The optotype device for eye examination according to claim 1, wherein the optotype is a transmissive liquid crystal. 3. The optotype device for eye examination according to claim 1, wherein the optotype is made of a transmission type electrochromic material. 4 Utility model registration claim 1 in which the first light guide means is a reflective mirror provided behind the optotype
The optotype device for eye examination described in Section 1. 5. The optotype device for eye examination according to claim 1, wherein the second light guide means is a reflecting mirror provided on the viewing side of the optotype. 6. The optotype device for eye examination according to claim 5, wherein the reflecting mirror has a partial light shielding function so as not to illuminate the optotype. 7. The optotype device for eye examination according to claim 1, wherein the second light guide means is a plurality of optical fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8495688U JPH0327604Y2 (en) | 1988-06-27 | 1988-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8495688U JPH0327604Y2 (en) | 1988-06-27 | 1988-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6417207U true JPS6417207U (en) | 1989-01-27 |
| JPH0327604Y2 JPH0327604Y2 (en) | 1991-06-14 |
Family
ID=31309637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8495688U Expired JPH0327604Y2 (en) | 1988-06-27 | 1988-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327604Y2 (en) |
-
1988
- 1988-06-27 JP JP8495688U patent/JPH0327604Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0327604Y2 (en) | 1991-06-14 |
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