CN106419829B - A kind of optical system and its automatic detecting-positioning method of full-automatic optometry unit - Google Patents

A kind of optical system and its automatic detecting-positioning method of full-automatic optometry unit Download PDF

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CN106419829B
CN106419829B CN201610766656.3A CN201610766656A CN106419829B CN 106419829 B CN106419829 B CN 106419829B CN 201610766656 A CN201610766656 A CN 201610766656A CN 106419829 B CN106419829 B CN 106419829B
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light source
spectroscope
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reflective mirror
lens
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CN106419829A (en
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刘培群
刘义兵
孙昭
刘力威
陈志君
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Ningbo Flo Optical Co ltd
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers or skiascopes

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Abstract

本发明涉及一种全自动验光仪的光学系统及其自动检测定位方法，包括投影光路、测量光路、固视系统及被测眼定位监视系统，在该光学系统上还包括有绿光源和蓝光源，该绿光源和蓝光源两者所发射的锥形光束聚焦点与被测眼瞳孔的定位点相重合，该绿光源所发射的锥形光束与被测眼瞳孔的定位点和被测眼定位监视系统所在的光路呈38°夹角状分布，该蓝光源所发射的锥形光束与被测眼瞳孔的定位点和被测眼定位监视系统所在的光路呈28°夹角状分布；本发明能省时、省力，且可精确规范的完成各项眼视光检查，力求在简化操作，缩短测量时间，提高自动化程度方面取得突破。

The invention relates to an optical system of a fully automatic refractor and its automatic detection and positioning method, including a projection light path, a measurement light path, a fixation system, and a position monitoring system for the eye under test. The optical system also includes a green light source and a blue light source , the focal point of the cone-shaped beam emitted by both the green light source and the blue light source coincides with the positioning point of the pupil of the tested eye, and the cone-shaped beam emitted by the green light source coincides with the positioning point of the pupil of the tested eye and the positioning point of the tested eye The optical path where the monitoring system is located is distributed at an included angle of 38°, and the conical light beam emitted by the blue light source is distributed at an included angle of 28° with the positioning point of the pupil of the tested eye and the optical path where the monitored eye positioning monitoring system is located; It can save time and effort, and can complete various eye examinations accurately and standardizedly, striving to make breakthroughs in simplifying operations, shortening measurement time, and improving automation.

Description

一种全自动验光仪的光学系统及其自动检测定位方法An optical system of a fully automatic refractor and its automatic detection and positioning method

技术领域technical field

本发明属于验光仪技术领域，尤其涉及一种全自动验光仪的光学系统及其自动检测定位方法。The invention belongs to the technical field of refractometers, in particular to an optical system of a fully automatic refractor and an automatic detection and positioning method thereof.

背景技术Background technique

目前国内验光仪还是以传统的物理按键和手动式操作为主，在寻找人眼以及定位方面比较繁琐、耗费时间人力，而且测量累计误差比较大，如果测量不好，还会对患者造成影响，所以对全自动及自动化定位比较期待。At present, domestic refractometers still use traditional physical buttons and manual operations, which are cumbersome, time-consuming and labor-intensive in terms of finding the human eye and positioning, and the cumulative error of measurement is relatively large. If the measurement is not good, it will also affect the patient. So I look forward to fully automatic and automatic positioning.

发明内容Contents of the invention

本发明的目的在于克服现有技术存在的不足，而提供一种减少人工误差、提高测量精度的全自动验光仪的光学系统及其自动检测定位方法。The purpose of the present invention is to overcome the deficiencies in the prior art, and provide an optical system of a fully automatic refractor and an automatic detection and positioning method that reduces manual errors and improves measurement accuracy.

本发明的目的是通过如下技术方案来完成的，包括投影光路、测量光路、固视系统及被测眼定位监视系统，所述的投影光路依次由红外光源、第一光学镜筒、第一透镜、第一反光镜、第一分光镜、第二分光镜组成，所述的测量光路依次由旋转棱镜、第二反光镜、第二透镜、第二光学镜筒、第一CCD图像传感器组成，所述的固视系统依次由可见光源、第三光学镜筒、第四光学镜筒、第三透镜、第三反光镜组成，所述的被测眼定位监视系统依次由第四透镜、第五光学镜筒、第六光学镜筒、第二CCD图像传感器组成；在该光学系统上还包括有绿光源和蓝光源，该绿光源和蓝光源两者所发射的锥形光束聚焦点与被测眼瞳孔的定位点相重合，该绿光源所发射的锥形光束与被测眼瞳孔的定位点和被测眼定位监视系统所在的光路呈38°夹角状分布，该蓝光源所发射的锥形光束与被测眼瞳孔的定位点和被测眼定位监视系统所在的光路呈28°夹角状分布。The object of the present invention is accomplished through the following technical solutions, including a projection optical path, a measurement optical path, a fixation system and an eye positioning monitoring system. , the first mirror, the first beamsplitter, and the second beamsplitter, and the measurement optical path is composed of a rotating prism, a second mirror, a second lens, a second optical lens barrel, and a first CCD image sensor in turn. The above described fixation system is composed of visible light source, third optical lens barrel, fourth optical lens barrel, third lens and third reflective mirror in sequence, and the described eye positioning monitoring system is composed of fourth lens, fifth optical lens and lens barrel, the sixth optical lens barrel, and the second CCD image sensor; on the optical system, a green light source and a blue light source are also included. The positioning point of the pupil coincides, and the cone-shaped light beam emitted by the green light source is distributed at an angle of 38° with the positioning point of the pupil of the tested eye and the optical path where the positioning monitoring system of the tested eye is located. The cone-shaped beam emitted by the blue light source is The light beam is distributed at an angle of 28° to the positioning point of the pupil of the measured eye and the optical path where the positioning monitoring system of the measured eye is located.

作为优选，所述的被测眼瞳孔的像与第二分光镜、第四透镜、第五光学镜筒、第六光学镜筒、第二CCD图像传感器处于同一光路上，该第二分光镜与第一分光镜及第三反光镜处于同一光路上，其中第三反光镜与可见光源、第三光学镜筒、第四光学镜筒、第三透镜处于同一光路上，第一分光镜与旋转棱镜、第一反光镜、第二反光镜处于同一光路上，第二反光镜与第二透镜、第二光学镜筒、第一CCD图像传感器处于同一光路上，第一反光镜与红外光源、第一光学镜筒、第一透镜处于同一光路上。As preferably, the image of the pupil of the measured eye is on the same optical path as the second beam splitter, the fourth lens, the fifth optical lens barrel, the sixth optical lens barrel, and the second CCD image sensor. The first beam splitter and the third mirror are on the same optical path, wherein the third mirror is on the same optical path as the visible light source, the third optical lens barrel, the fourth optical lens barrel, and the third lens, and the first beam splitter and the rotating prism , the first mirror and the second mirror are on the same optical path, the second mirror and the second lens, the second optical lens barrel, and the first CCD image sensor are on the same optical path, the first mirror and the infrared light source, the first The optical lens barrel and the first lens are on the same optical path.

作为优选，所述的可见光源、第三光学镜筒、第四光学镜筒、第三透镜、第三反光镜所在的光路与第二分光镜、第一分光镜、第三反光镜所在的光路呈45°反射；第二分光镜、第一分光镜、第三反光镜所在的光路与第二分光镜、第四透镜、第五光学镜筒、第六光学镜筒、第二CCD图像传感器所在的光路呈45°反射。As preferably, the optical path where the visible light source, the third optical lens barrel, the fourth optical lens barrel, the third lens, and the third reflective mirror are located is the same as the optical path where the second beam splitter, the first beam splitter, and the third reflective mirror are located Reflected at 45°; the optical path where the second beam splitter, the first beam splitter, and the third mirror are located is the same as the second beam splitter, the fourth lens, the fifth optical lens barrel, the sixth optical lens barrel, and the second CCD image sensor. The light path is reflected at 45°.

作为优选，所述的第一分光镜、第二分光镜是由多层膜真空法制作而成，其对红外光源波长的透射和反射比例为1:1。Preferably, the first beam splitter and the second beam splitter are made by multi-layer film vacuum method, and the ratio of transmission and reflection to the wavelength of the infrared light source is 1:1.

一种采用如上述的全自动验光仪的光学系统的自动检测定位方法，该方法包括如下步骤：An automatic detection and positioning method using the optical system of the above-mentioned automatic refractor, the method includes the following steps:

1)、红外光源发出光源经过第一光学镜筒形成环形目标，并经第一透镜平行出射，经第一反光镜反射以及第一分光镜、第二分光镜反射进入被测眼瞳孔；1), the infrared light source emits a light source that passes through the first optical lens barrel to form a ring-shaped target, and exits in parallel through the first lens, and enters the pupil of the eye to be tested after being reflected by the first mirror and reflected by the first beam splitter and the second beam splitter;

2)、从被测眼瞳孔反射回来的光线经第二分光镜、第一分光镜反射并通过旋转棱镜及第一反光镜上的小孔到达第二反光镜，经第二反光镜反射后经过第二透镜、第二光学镜筒，最后在第一CCD图像传感器上形成环像；2) The light reflected from the pupil of the tested eye is reflected by the second beam splitter and the first beam splitter, then passes through the rotating prism and the small hole on the first mirror to reach the second mirror, and after being reflected by the second mirror, passes through the The second lens, the second optical lens barrel, finally form a ring image on the first CCD image sensor;

3)、可见光源通过第三光学镜筒、第四光学镜筒，经第三透镜平行入射到第三反光镜上，经第三反光镜反射后经第一分光镜、第二分光镜到达被测眼瞳孔；3) The visible light source passes through the third optical lens barrel and the fourth optical lens barrel, and is incident on the third reflector in parallel through the third lens. After being reflected by the third reflector, it passes through the first and second beam splitters to reach the Eye pupil measurement;

4)、波长不同于红外光源的红外光经第四透镜成平行光束，第二分光镜投射照亮被测眼瞳孔，并和绿光源、蓝光源两者所发射的锥形光束一起再经第二分光镜、第四透镜、第五光学镜筒、第六光学镜筒，最后在第二CCD图像传感器上成像，并使被测眼瞳孔的像和预置点状圆同心。4) Infrared light with a wavelength different from that of the infrared light source passes through the fourth lens into a parallel beam, and the second beam splitter projects to illuminate the pupil of the eye to be tested, and together with the conical beam emitted by the green light source and the blue light source, it passes through the first The second beam splitter, the fourth lens, the fifth optical lens barrel, and the sixth optical lens barrel finally form an image on the second CCD image sensor, and make the image of the pupil of the tested eye concentric with the preset point circle.

作为优选，被测眼瞳孔的像采用非对称倾斜照明的绿光源、蓝光源两者所发射的锥形光束来判断离焦方向，当被测眼瞳孔恰好在绿光源和蓝光源两者所发射的锥形光束聚焦点时，绿光源、蓝光源两者所发射的锥形光束都能够被被测眼瞳孔的角膜反射进入第二CCD图像传感器上成像，当被测眼瞳孔向右离焦时，只有蓝光源所发射的锥形光束反射进入第二CCD图像传感器，反之，当被测眼瞳孔向左离焦时，只有绿光源所发射的锥形光束反射进入第二CCD图像传感器。As preferably, the image of the pupil of the tested eye uses the conical light beams emitted by both the green light source and the blue light source of asymmetric oblique illumination to determine the defocus direction. When the cone-shaped beams are focused, the cone-shaped beams emitted by both the green light source and the blue light source can be reflected by the cornea of the pupil of the tested eye and enter the second CCD image sensor for imaging. When the pupil of the tested eye is defocused to the right , only the cone-shaped light beam emitted by the blue light source is reflected into the second CCD image sensor, conversely, when the pupil of the measured eye is defocused to the left, only the cone-shaped light beam emitted by the green light source is reflected into the second CCD image sensor.

本发明的有益效果为：该验光仪是通过蓝光和绿光自动寻找眼睛以及定位，自动控制电机来上下前后左右移动，直至找到眼睛并定位，最后自动测量，减少了人工误差，提高测量精度；能省时、省力，且可精确规范的完成各项眼视光检查，力求在简化操作，缩短测量时间，提高自动化程度方面取得突破。The beneficial effects of the present invention are: the optometry instrument automatically finds and locates the eye through blue light and green light, and automatically controls the motor to move up, down, front, back, left, and right until the eye is found and positioned, and finally measures automatically, reducing manual errors and improving measurement accuracy; It can save time and effort, and can complete various eye examinations accurately and standardizedly, striving to make breakthroughs in simplifying operations, shortening measurement time, and improving automation.

附图说明Description of drawings

图1是本发明的光路原理示意图。Fig. 1 is a schematic diagram of the optical path principle of the present invention.

附图中的标号分别为：101、外光源；102、第一光学镜筒；103、第一透镜；104、第一反光镜；105、第一分光镜；106、第二分光镜；201、旋转棱镜；202、第二反光镜；203、第二透镜；204、第二光学镜筒；205、第一CCD图像传感器；301、可见光源；302、第三光学镜筒；303、第四光学镜筒；304、第三透镜；305、第三反光镜；401、第四透镜；402、第五光学镜筒；403、第六光学镜筒；404、第二CCD图像传感器；501、蓝光源；502、绿光源；601、被测眼瞳孔。The labels in the accompanying drawings are respectively: 101, external light source; 102, first optical lens barrel; 103, first lens; 104, first mirror; 105, first beam splitter; 106, second beam splitter; 201, Rotating prism; 202, second mirror; 203, second lens; 204, second optical lens barrel; 205, first CCD image sensor; 301, visible light source; 302, third optical lens barrel; 303, fourth optical lens Lens barrel; 304, third lens; 305, third mirror; 401, fourth lens; 402, fifth optical lens barrel; 403, sixth optical lens barrel; 404, second CCD image sensor; 501, blue light source ; 502, the green light source; 601, the pupil of the tested eye.

具体实施方式Detailed ways

下面将结合附图对本发明做详细的介绍：如附图1所示，本发明包括投影光路、测量光路、固视系统及被测眼定位监视系统，其特征在于：所述的投影光路依次由红外光源101、第一光学镜筒102、第一透镜103、第一反光镜104、第一分光镜105、第二分光镜106组成，所述的测量光路依次由旋转棱镜201、第二反光镜202、第二透镜203、第二光学镜筒204、第一CCD图像传感器205组成，所述的固视系统依次由可见光源301、第三光学镜筒302、第四光学镜筒303、第三透镜304、第三反光镜305组成，所述的被测眼定位监视系统依次由第四透镜401、第五光学镜筒402、第六光学镜筒403、第二CCD图像传感器404组成；在该光学系统上还包括有绿光源502和蓝光源501，该绿光源502和蓝光源501两者所发射的锥形光束聚焦点与被测眼瞳孔601的定位点相重合，该绿光源502所发射的锥形光束与被测眼瞳孔601的定位点和被测眼定位监视系统所在的光路呈38°夹角状分布，该蓝光源501所发射的锥形光束与被测眼瞳孔601的定位点和被测眼定位监视系统所在的光路呈28°夹角状分布。The present invention will be described in detail below in conjunction with accompanying drawing: As shown in accompanying drawing 1, the present invention comprises projection light path, measurement light path, fixation system and measured eye positioning monitoring system, it is characterized in that: described projection light path is followed by Infrared light source 101, the first optical lens barrel 102, the first lens 103, the first reflective mirror 104, the first beam splitter 105, the second beam splitter 106 are made up, and described measurement optical path is successively by rotating prism 201, the second reflective mirror 202, the second lens 203, the second optical lens barrel 204, and the first CCD image sensor 205. The described fixation system consists of a visible light source 301, a third optical lens barrel 302, a fourth optical lens barrel 303, and a third Lens 304, the 3rd reflection mirror 305 are made up of, and described measured eye position monitoring system is made up of the 4th lens 401, the 5th optical lens barrel 402, the 6th optical lens barrel 403, the 2nd CCD image sensor 404 successively; The optical system also includes a green light source 502 and a blue light source 501. The focal point of the conical light beam emitted by both the green light source 502 and the blue light source 501 coincides with the positioning point of the pupil 601 of the tested eye. The green light source 502 emits The cone-shaped light beam of the blue light source 501 and the positioning point of the pupil 601 of the measured eye and the optical path where the positioning monitoring system of the measured eye are located are distributed at an angle of 38°. It is distributed at an angle of 28° with the optical path where the eye positioning monitoring system is located.

所述的被测眼瞳孔601的像与第二分光镜106、第四透镜401、第五光学镜筒402、第六光学镜筒403、第二CCD图像传感器404处于同一光路上，该第二分光镜106与第一分光镜105及第三反光镜305处于同一光路上，其中第三反光镜305与可见光源301、第三光学镜筒302、第四光学镜筒303、第三透镜304处于同一光路上，第一分光镜105与旋转棱镜201、第一反光镜104、第二反光镜202处于同一光路上，第二反光镜202与第二透镜203、第二光学镜筒204、第一CCD图像传感器205处于同一光路上，第一反光镜104与红外光源101、第一光学镜筒102、第一透镜103处于同一光路上。The image of the pupil 601 to be measured is on the same optical path as the second beam splitter 106, the fourth lens 401, the fifth optical lens barrel 402, the sixth optical lens barrel 403, and the second CCD image sensor 404. The beam splitter 106 is on the same optical path as the first beam splitter 105 and the third mirror 305, wherein the third mirror 305 is in the same optical path as the visible light source 301, the third optical lens barrel 302, the fourth optical lens barrel 303, and the third lens 304. On the same optical path, the first beam splitter 105 is on the same optical path as the rotating prism 201, the first reflective mirror 104, and the second reflective mirror 202, and the second reflective mirror 202 is connected to the second lens 203, the second optical lens barrel 204, the first The CCD image sensor 205 is on the same optical path, and the first mirror 104 is on the same optical path as the infrared light source 101 , the first optical lens barrel 102 , and the first lens 103 .

所述的可见光源301、第三光学镜筒302、第四光学镜筒303、第三透镜304、第三反光镜305所在的光路与第二分光镜106、第一分光镜105、第三反光镜305所在的光路呈45°反射；第二分光镜106、第一分光镜105、第三反光镜305所在的光路与第二分光镜106、第四透镜401、第五光学镜筒402、第六光学镜筒403、第二CCD图像传感器404所在的光路呈45°反射。Described visible light source 301, the 3rd optical lens barrel 302, the 4th optical lens barrel 303, the 3rd lens 304, the optical path where the 3rd mirror 305 are located and the 2nd beam splitter 106, the 1st beam splitter 105, the 3rd reflector The optical path where the mirror 305 is located is 45° reflection; The optical paths where the six optical lens barrels 403 and the second CCD image sensor 404 are located reflect at 45°.

所述的第一分光镜105、第二分光镜106是由多层膜真空法制作而成，其对红外光源101波长的透射和反射比例为1:1。The first beamsplitter 105 and the second beamsplitter 106 are made by a multi-layer film vacuum method, and the ratio of transmission and reflection to the wavelength of the infrared light source 101 is 1:1.

一种采用全自动验光仪的光学系统的自动检测定位方法，该方法包括如下步骤：A method for automatic detection and positioning of an optical system using a fully automatic refractometer, the method comprising the following steps:

1)、红外光源101发出光源经过第一光学镜筒102形成环形目标，并经第一透镜103平行出射，经第一反光镜104反射以及第一分光镜105、第二分光镜106反射进入被测眼瞳孔601；1), the infrared light source 101 emits a light source to form an annular target through the first optical lens barrel 102, and exits in parallel through the first lens 103, and is reflected by the first mirror 104 and reflected by the first beam splitter 105 and the second beam splitter 106 into the Eye pupil measurement 601;

2)、从被测眼瞳孔601反射回来的光线经第二分光镜106、第一分光镜105反射并通过旋转棱镜201及第一反光镜104上的小孔到达第二反光镜202，经第二反光镜202反射后经过第二透镜203、第二光学镜筒204，最后在第一CCD图像传感器205上形成环像；2), the light reflected from the pupil 601 of the tested eye is reflected by the second beam splitter 106 and the first beam splitter 105 and reaches the second mirror 202 through the small hole on the rotating prism 201 and the first mirror 104, and passes through the second beam splitter 202. The second mirror 202 passes through the second lens 203 and the second optical lens barrel 204 after being reflected, and finally forms a ring image on the first CCD image sensor 205;

3)、可见光源301通过第三光学镜筒302、第四光学镜筒303，经第三透镜304平行入射到第三反光镜305上，经第三反光镜305反射后经第一分光镜105、第二分光镜106到达被测眼瞳孔601；3), the visible light source 301 passes through the third optical lens barrel 302, the fourth optical lens barrel 303, is incident on the third mirror 305 in parallel through the third lens 304, and is reflected by the third mirror 305 and passes through the first beam splitter 105 , the second beam splitter 106 reaches the pupil 601 of the eye under test;

4)、波长不同于红外光源101的红外光经第四透镜401成平行光束，第二分光镜106投射照亮被测眼瞳孔601，并和绿光源502、蓝光源501两者所发射的锥形光束一起再经第二分光镜106、第四透镜401、第五光学镜筒402、第六光学镜筒403，最后在第二CCD图像传感器404上成像，并使被测眼瞳孔601的像和预置点状圆同心。4), the infrared light with a wavelength different from that of the infrared light source 101 becomes a parallel light beam through the fourth lens 401, and the second beam splitter 106 projects and illuminates the pupil 601 of the eye to be tested, and the cone emitted by both the green light source 502 and the blue light source 501 Shaped beams pass through the second beam splitter 106, the fourth lens 401, the fifth optical lens barrel 402, and the sixth optical lens barrel 403 together, and finally form an image on the second CCD image sensor 404, and make the image of the pupil 601 of the tested eye Concentric with the preset point circle.

被测眼瞳孔601的像采用非对称倾斜照明的绿光源502、蓝光源501两者所发射的锥形光束来判断离焦方向，当被测眼瞳孔601恰好在绿光源502和蓝光源501两者所发射的锥形光束聚焦点时，绿光源502、蓝光源501两者所发射的锥形光束都能够被被测眼瞳孔601的角膜反射进入第二CCD图像传感器404上成像，当被测眼瞳孔601向右离焦时，只有蓝光源501所发射的锥形光束反射进入第二CCD图像传感器404，反之，当被测眼瞳孔601向左离焦时，只有绿光源502所发射的锥形光束反射进入第二CCD图像传感器404。The image of the pupil 601 of the tested eye uses the conical light beams emitted by both the green light source 502 and the blue light source 501 of asymmetric oblique illumination to determine the defocus direction. When the cone-shaped light beams emitted by the green light source 502 and the blue light source 501 are focused, the cone-shaped light beams emitted by both the green light source 502 and the blue light source 501 can be reflected by the cornea of the pupil 601 of the measured eye and enter the second CCD image sensor 404 for imaging. When the eye pupil 601 is defocused to the right, only the cone-shaped light beam emitted by the blue light source 501 is reflected and enters the second CCD image sensor 404; The shaped light beam is reflected into the second CCD image sensor 404.

可以理解的是，对本领域技术人员来说，对本发明的技术方案及发明构思加以等同替换或改变都应属于本发明所附的权利要求的保护范围。It can be understood that, for those skilled in the art, equivalent replacements or changes to the technical solutions and inventive concept of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims (6)

1. a kind of optical system of full-automatic optometry unit, including projecting light path, optical path, fixation system and tested eye positioning prison Viewing system, it is characterised in that：The projecting light path successively by infrared light supply (101), the first optical tubes (102), first thoroughly Mirror (103), the first reflective mirror (104), the first spectroscope (105), the second spectroscope (106) composition, the optical path according to It is secondary by rotating prism (201), the second reflective mirror (202), the second lens (203), the second optical tubes (204), the first ccd image Sensor (205) forms, and the fixation system is successively by visible light source (301), third optical tubes (302), the 4th optics Lens barrel (303), the third lens (304), third reflective mirror (305) composition, the tested eye positioning monitoring system is successively by the Four lens (401), the 5th optical tubes (402), the 6th optical tubes (403), the second ccd image sensor (404) composition； Further include having green light source (502) and blue-light source (501) in the optical system, both the green light source (502) and blue-light source (501) institute The cone-shaped beam focus point of transmitting and the anchor point of tested eye pupil (601) coincide, the taper which is emitted Light path of the light beam with the anchor point of tested eye pupil (601) and where tested eye positioning monitoring system is distributed in 38 ° of angle shapes, should Anchor point and tested eye positioning monitoring system place of the cone-shaped beam that blue-light source (501) is emitted with tested eye pupil (601) Light path be distributed in 28 ° of angle shapes.
2. the optical system of full-automatic optometry unit according to claim 1, it is characterised in that：The tested eye pupil (601) picture and the second spectroscope (106), the 4th lens (401), the 5th optical tubes (402), the 6th optical tubes (403), Second ccd image sensor (404) is in same light path, second spectroscope (106) and the first spectroscope (105) and third Reflective mirror (305) is in same light path, wherein third reflective mirror (305) and visible light source (301), third optical tubes (302), the 4th optical tubes (303), the third lens (304) are in same light path, the first spectroscope (105) and rotating prism (201), the first reflective mirror (104), the second reflective mirror (202) are in same light path, the second reflective mirror (202) and the second lens (203), the second optical tubes (204), the first ccd image sensor (205) are in same light path, the first reflective mirror (104) It is in same light path with infrared light supply (101), the first optical tubes (102), the first lens (103).
3. the optical system of full-automatic optometry unit according to claim 2, it is characterised in that：The visible light source (301), where third optical tubes (302), the 4th optical tubes (303), the third lens (304), third reflective mirror (305) Light path is with the light path where the second spectroscope (106), the first spectroscope (105), third reflective mirror (305) in 45 ° of reflections；Second Light path where spectroscope (106), the first spectroscope (105), third reflective mirror (305) with the second spectroscope (106), the 4th thoroughly Light path where mirror (401), the 5th optical tubes (402), the 6th optical tubes (403), the second ccd image sensor (404) It is reflected in 45 °.
4. the optical system of full-automatic optometry unit according to claim 1, it is characterised in that：First spectroscope (105), the second spectroscope (106) is made by multilayer film vacuum method, to the transmission of infrared light supply (101) wavelength and anti- It is 1 to penetrate ratio:1.
5. a kind of automatic detecting-positioning method of optical system using full-automatic optometry unit as described in claim 1, special Sign is：This method comprises the following steps：
1), infrared light supply (101) sends out light source and forms circular target by the first optical tubes (102), and through the first lens (103) exiting parallel is reflected into through the first reflective mirror (104) reflection and the first spectroscope (105), the second spectroscope (106) Enter tested eye pupil (601)；
2) it, is reflected simultaneously from tested eye pupil (601) reflected light through the second spectroscope (106), the first spectroscope (105) The second reflective mirror (202) is reached by the aperture on rotating prism (201) and the first reflective mirror (104), through the second reflective mirror (202) by the second lens (203), the second optical tubes (204) after reflecting, finally on the first ccd image sensor (205) Form ring picture；
3), visible light source (301) is flat through the third lens (304) by third optical tubes (302), the 4th optical tubes (303) Row is incident on third reflective mirror (305), through the first spectroscope (105), the second spectroscope after third reflective mirror (305) reflection (106) tested eye pupil (601) is reached；
4), wavelength be different from infrared light supply (101) infrared light through the 4th lens (401) at collimated light beam, the second spectroscope (106) tested eye pupil (601), and the cone-shaped beam emitted with both green light source (502), blue-light source (501) are illuminated in projection Together again through the second spectroscope (106), the 4th lens (401), the 5th optical tubes (402), the 6th optical tubes (403), most It is imaged on the second ccd image sensor (404) afterwards, and keeps the picture of tested eye pupil (601) and preset dotted circle concentric.
6. the automatic detecting-positioning method of the optical system of full-automatic optometry unit according to claim 5, it is characterised in that： The cone that the picture of tested eye pupil (601) is emitted using green light source (502), blue-light source (501) the two of asymmetric oblique illumination Shaped light beam judges defocus direction, when tested eye pupil (601) is sent out in both green light source (502) and blue-light source (501) just When the cone-shaped beam focus point penetrated, the cone-shaped beam that both green light source (502), blue-light source (501) are emitted can be tested The corneal reflection in eye pupil hole (601) enter the second ccd image sensor (404) on is imaged, when tested eye pupil (601) to the right from The cone-shaped beam that Jiao Shi, only blue-light source (501) are emitted is reflected into the second ccd image sensor (404), conversely, working as quilt Survey eye pupil hole (601) to the left defocus when, cone-shaped beam that only green light source (502) is emitted is reflected into the second ccd image biography Sensor (404).
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US4021102A (en) * 1973-11-26 1977-05-03 Kabushiki Kaisha Hoya Lens Auto-refractometer
CN1194131A (en) * 1998-03-30 1998-09-30 华北工学院 Optical system for objective optometry instrument
CN204671110U (en) * 2015-02-05 2015-09-30 宁波法里奥光学科技发展有限公司 Optical system in a kind of eye refractometer
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