JPS6227601U

JPS6227601U -

Info

Publication number: JPS6227601U
Application number: JP11773085U
Authority: JP
Priority date: 1985-07-31
Filing date: 1985-07-31
Publication date: 1987-02-19
Also published as: JPH032242Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る自動視力計の実施例を示
す外観斜視図、第２Ａ図は回答スイツチの構成を
示す平面図、第２Ｂ図は第２Ａ図のＢ―Ｂ′
視断面図、第３図は操作パネルの構成を示す平面
図、第４図は光学配置を示す斜視図、第５図は補
助レンズ群の構成を示す平面図、第６図は液晶板
のパターン例を示す平面図、第７図はマスク板の
パターン例を示す平面図、第８図は電気系の構成
を示すブロツク図、第９図は検査ルーチン全体の
流れを示すフローチヤート、第１０図は測定処理
サブルーチンを示すフローチヤート、第１１図は
スクリーニングルーチンを示すフローチヤート、
１２Ａ図ないし１２Ｄ図は視標の提示例を示す図
、第１３図は偶然一致による誤測定防止のサブル
ーチンを示すフローチヤート、第１４図は０．７
精密テストのサブルーチンを示すフローチヤート
、第１５図は第１４図の各ステツプに共通のその
ステツプ内のルーチンを示すフローチヤート、第
１６図は立体視テストのルーチンを示すフローチ
ヤート、第１７図は立体視の提示例を示す図であ
る。１０……台座、１１……操作パネル、１２……
スタートスイツチ、１３……回答スイツチ、３０
……操作パネル、４０１〜４０９，４１５……ラ
ンドルト視標、４１２……ジヤツク素子列、４２
２……液晶板、４２３……マスク板。 Fig. 1 is an external perspective view showing an embodiment of the automatic visual acuity meter according to the present invention, Fig. 2A is a plan view showing the configuration of an answer switch, and Fig. 2B is a line B-B' in Fig. 2A.
3 is a plan view showing the structure of the operation panel, FIG. 4 is a perspective view showing the optical arrangement, FIG. 5 is a plan view showing the structure of the auxiliary lens group, and FIG. 6 is the pattern of the liquid crystal plate. FIG. 7 is a plan view showing an example of a mask plate pattern, FIG. 8 is a block diagram showing the configuration of the electrical system, FIG. 9 is a flowchart showing the overall flow of the inspection routine, and FIG. 10 is a flowchart showing the measurement processing subroutine, FIG. 11 is a flowchart showing the screening routine,
Figures 12A to 12D are diagrams showing examples of visual target presentation, Figure 13 is a flowchart showing a subroutine for preventing erroneous measurements due to coincidence, and Figure 14 is 0.7.
15 is a flowchart showing a routine within each step common to each step in FIG. 14, FIG. 16 is a flowchart showing a stereoscopic vision test routine, and FIG. 17 is a flowchart showing a subroutine for a precision test. It is a figure which shows the example of presentation of stereoscopic vision. 10...Pedestal, 11...Operation panel, 12...
Start switch, 13...Answer switch, 30
... Operation panel, 401 to 409, 415 ... Landolt optotype, 412 ... Jack element row, 42
2...Liquid crystal board, 423...Mask board.

補正昭６０．１０．２９図面の簡単な説明を次のように補正する。明細書第４４頁１７行の“１２Ａ図ないし１２
ｄ図”を「第１２Ａ図から第１２Ｄ図」に訂正す
る。Amendment October 29, 1980 The brief description of the drawing is amended as follows. 12A to 12 on page 44, line 17 of the specification
"Figure d" is corrected to "Figure 12A to Figure 12D."

Claims

[Scope of Claim for Utility Model Registration] (1) An optotype board for visual acuity test configured to be able to present an optotype for visual acuity test using an electro-optical display means, which has a visual acuity value lower than a predetermined visual acuity value. A first group of optotypes having a visual acuity value higher than the visual acuity value is formed by the electro-optic display means, and a plurality of optotypes of a second group having a visual acuity value higher than the visual acuity value are printed on a member disposed close to the electro-optic display means. said electro-optical display means further forming a shutter element group corresponding to each of said second group of optotypes. (2) Utility model registration claim No. (1) characterized in that the electro-optical display means is a liquid crystal display.
The optotype board described in the section. (3) The optotype board according to claim (1) or (2) of the utility model registration, wherein the optotype is a Landolt optotype. (4) The visual display according to any one of claims (1) to (3) of the utility model registration, wherein the electro-optical display means is of a transmission type, and the member is a transparent glass plate. Signboard.