ES2043539B1 - OPTOMETER. - Google Patents
OPTOMETER.Info
- Publication number
- ES2043539B1 ES2043539B1 ES9200739A ES9200739A ES2043539B1 ES 2043539 B1 ES2043539 B1 ES 2043539B1 ES 9200739 A ES9200739 A ES 9200739A ES 9200739 A ES9200739 A ES 9200739A ES 2043539 B1 ES2043539 B1 ES 2043539B1
- Authority
- ES
- Spain
- Prior art keywords
- image
- retina
- optometer
- infrared
- fine
- 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.)
- Expired - Lifetime
Links
Landscapes
- Eye Examination Apparatus (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
"OPTOMETRO". OPTOMETRO, QUE COMPRENDIENDO TRES PARTES OPTICAS CORRESPONDIENTES A UN SISTEMA DE PROYECCION, UN SISTEMA DE TEST DE OPTOTIPOS Y UN SISTEMA ANALIZADOR, Y UN MODULO ELECTRONICO, ANALIZA LA IMAGEN DE UNA RENDIJA PROYECTADA EN INFRARROJO EN LA RETINA POR MEDIO DE UN BARRIDO ELECTRONICO DEL FONDO DE ESTA, SUPERPONIENDO ADEMAS UN VISOR PARA COMPROBAR EL ESTADO DE ACOMODACION, REALIZANDO EL MODULO ELECTRONICO EL BARRIDO DE LA IMAGEN RETINIANA FORMADA. EN FUNCION DE LA AMETROPIA DEL OJO EN CUESTION, LA IMAGEN EN LA RETINA DE LA FINA RENDIJA PROYECTADA EN INFRARROJO SERA UNA BANDA MAS O MENOS ESTRECHA, LO QUE SE DETECTARA FACILMENTE FOCALIZANDO SU IMAGEN EN UN SENSOR LINEAL DE FOTODIODOS MULTIPLES QUE A SU VEZ ENVIA SU SALIDA ELECTRICA A UNA ETAPA DE TRATAMIENTO DE SEÑAL, PARA QUE UNA VEZ DEPURADA, SOMETERLA A UNA TRANSPOSICION EN FRECUENCIA, DE MODO QUE LA FRECUENCIA OBTENIDA QUEDE DENTRO DEL ESPECTRO AUDIBLE."OPTOMETER". OPTOMETER, WHICH UNDERSTANDING THREE PARTS OPTICES CORRESPONDING TO A PROJECTION SYSTEM, AN OPTOTYPE TEST SYSTEM AND AN ANALYZER SYSTEM, AND AN ELECTRONIC MODULE, ANALYZES THE IMAGE OF A PROJECTED SLOT IN INFRARED IN THE RETINA FINE RETINA OF THIS, ALSO OVERLAYING A VIEWFINDER TO CHECK THE STATUS OF ACCOMMODATION, PERFORMING THE ELECTRONIC MODULE THE SWEEP OF THE RETINIAN IMAGE FORMED. DEPENDING ON THE AMETROPY OF THE EYE IN QUESTION, THE IMAGE IN THE RETINA OF THE FINE RENDIJA PROJECTED IN INFRARED WILL BE A BAND MORE OR LESS NARROW, WHICH WILL BE EASILY DETECTED BY FOCUSING ITS IMAGE ON A LINEAR SENSOR OF MULTIPLE PHOTODIODS. ITS ELECTRICAL OUTPUT AT A SIGNAL TREATMENT STAGE, SO THAT ONCE IT IS CLEANED, IT IS SUBJECTED TO A TRANSPOSITION IN FREQUENCY, SO THAT THE FREQUENCY OBTAINED IS WITHIN THE AUDIBLE SPECTRUM.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9200739A ES2043539B1 (en) | 1992-04-07 | 1992-04-07 | OPTOMETER. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9200739A ES2043539B1 (en) | 1992-04-07 | 1992-04-07 | OPTOMETER. |
Publications (3)
Publication Number | Publication Date |
---|---|
ES2043539A2 ES2043539A2 (en) | 1993-12-16 |
ES2043539R ES2043539R (en) | 1996-06-16 |
ES2043539B1 true ES2043539B1 (en) | 1997-02-16 |
Family
ID=8276646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9200739A Expired - Lifetime ES2043539B1 (en) | 1992-04-07 | 1992-04-07 | OPTOMETER. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2043539B1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4162828A (en) * | 1977-09-30 | 1979-07-31 | Trachtman Joseph N | Apparatus and methods for directly measuring the refraction of the eye |
GB2078395B (en) * | 1980-06-26 | 1983-11-09 | Pilkington Perkin Elmer Ltd | Optical apparatus for ascertaining eye accommodation state |
US4533221A (en) * | 1983-01-25 | 1985-08-06 | Trachtman Joseph N | Methods and apparatus for accommodation training |
-
1992
- 1992-04-07 ES ES9200739A patent/ES2043539B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2043539R (en) | 1996-06-16 |
ES2043539A2 (en) | 1993-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19920407 Kind code of ref document: B1 Effective date: 19920407 |
|
FA2A | Application withdrawn |
Effective date: 19980401 |