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
Application number
ES9200739A
Other languages
Spanish (es)
Other versions
ES2043539R (en
ES2043539A2 (en
Inventor
Criado Jose Luis Moreno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES9200739A priority Critical patent/ES2043539B1/en
Publication of ES2043539A2 publication Critical patent/ES2043539A2/en
Publication of ES2043539R publication Critical patent/ES2043539R/es
Application granted granted Critical
Publication of ES2043539B1 publication Critical patent/ES2043539B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.

ES9200739A 1992-04-07 1992-04-07 OPTOMETER. Expired - Lifetime ES2043539B1 (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
ES2043539R (en) 1996-06-16
ES2043539A2 (en) 1993-12-16

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