JPS6227604U

JPS6227604U -

Info

Publication number: JPS6227604U
Application number: JP11772785U
Authority: JP
Priority date: 1985-07-31
Filing date: 1985-07-31
Publication date: 1987-02-19

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、３０３……視標提示時間設定ツマ
ミ、４２２Ｒ，４２２Ｌ……液晶板、６０３……
ドライバ、６０７……ＣＰＵ、６０９……ＣＴＣ
。 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 the answer switch, and Fig. 2B is 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 a 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 a measurement processing subroutine, FIG. 11 is a flowchart showing a 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; 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, 303...Target presentation time setting knob, 422R, 422L...Liquid crystal panel, 603...
Driver, 607...CPU, 609...CTC
.

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４３頁第１７行の“１２Ａ図ないし１
２Ｄ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. “Figure 12A to 1” on page 43, line 17 of the specification
2D figure” is corrected to “Figure 12A to 12D.”

Claims

[Scope of Claim for Utility Model Registration] (1) In an automatic visual acuity meter that selectively presents one optotype from among a plurality of optotypes to a subject, the presentation time of the selected optotype is selective. 1. An automatic visual acuity meter characterized by having an optotype presentation time control means for controlling. (2) The automatic visual acuity meter according to claim 1, wherein the optotype is selectively displayed by a liquid crystal display means. (3) The optotype presentation time control means includes an optotype presentation time setting device for setting a desired optotype presentation time, a clocking means for timing the presentation time of the optotype, and a setting device configured by the setting device. The present invention is characterized in that it is comprised of a comparing means for comparing the set presentation time set and the time measured by the time measuring means, and an optotype presentation control means for stopping the presentation of the optotype after the set presentation time elapses. An automatic visual acuity meter as set forth in paragraph (1) or (2) of the claims for patent registration.