CN218889646U

CN218889646U - Image acquisition optical structure of pupil detector

Info

Publication number: CN218889646U
Application number: CN202222673842.6U
Authority: CN
Inventors: 吕嘉; 万涛; 何松涛
Original assignee: Kunming Yilikete Technology Co ltd
Current assignee: Kunming Yilikete Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-04-21
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses an image acquisition optical structure of a pupil detector, belonging to the technical field of pupil physiological data acquisition equipment; the device comprises a shell, a central processor and an image acquisition module, wherein the central processor and the image acquisition module are arranged in the shell, the image acquisition module comprises an ocular and a camera which is in data connection with the central processor, the image acquisition module further comprises a stimulation light source and an infrared light source, the stimulation light source and the infrared light source are respectively arranged around at least two of the outer sides of a lens barrel of which the front end of the shell accommodates the ocular, the ocular comprises an infrared filter, and the infrared filter is a near infrared filter; the utility model solves the problem of interference of the stimulating light and the natural light on the infrared image, and uses the infrared light source to clear the boundary between the pupil and the iris, so that the quality of the obtained image is higher.

Description

Image acquisition optical structure of pupil detector

Technical Field

The utility model relates to a pupil detector, in particular to an image acquisition optical structure of the pupil detector, and belongs to the technical field of pupil physiological data acquisition equipment.

Background

The eyes are the most important sense organs for human to perceive external information, and the human brain feels the most intuitive sense, receives the largest amount of information or is the visual way in the sense of vision, smell, touch, taste, hearing and the like, and accounts for about 70% of the human body receiving the information from the outside. In the visual function of human eyes, pupils have important academic and clinical research values due to special photosensitivity, and the dynamic change process of eyes contains a great amount of scientific information, for example, the scientific and accurate acquisition of the data and the effective analysis and judgment are the technical keys for defining drug attractors.

Pupil light reflex is a physiological phenomenon, and when the pupil is irradiated by visible light, the pupil can shrink, and after the light source is removed, the pupil can quickly recover. The pupil is responsive to light stimulus, and when one pupil is stimulated with light, the side pupil constricts, and after the light is removed, the pupil is restored, which is called direct light reflex. If two eyes are separated by an opaque object (such as a baffle or palm), when one pupil is irradiated by light, the other pupil is also immediately narrowed, which is called indirect light reflection. The direct and indirect light reflections of both eyes are typically simultaneous, of equal amplitude. The presently known light reflex nerve conduction pathways are: the constriction of the pupil is governed by the pupillary opening muscle, which causes dilation of the pupil, by sympathetic nerves, and the sphincter of the pupil, which excites to constrict the pupil, by parasympathetic nerves. During the pupil constriction phase of the light reflex, mainly parasympathetic innervation, during the diastole phase and pupil darkness adaptation, mainly sympathetic innervation. Pupil light reflex is an unconditional neural reflex process that is difficult to interfere with by subjective factors.

The pupil detector for suspected drug addicts is based on the principle, and the physiological dependence degree and the craving degree of opium on the drug addicts and opium addicts are rapidly detected by utilizing the characteristic that opium drug addicts produce specific pupil dynamic change on specific light wavelength and light intensity. The Kunming-Eirinotecan technology Co., ltd of the applicant has developed various corresponding pupil detectors for drug-taking personnel, such as the patents of application numbers CN202121451375.1, CN202020501254.2 and CN201821474262.1 under the name of the same, but the applicant has found that pupil detection equipment equipped with a visible light camera cannot accurately identify the pupil position due to light reflection on the surface of an eyeball, the quality of the obtained image is not high, and the influence of natural illumination, a stimulus light source and the like on the detection result cannot be controlled; in addition, the stimulation light source is fixed singly, the stimulation light source is not provided with a compensation device, and the image quality is low; only pupil characteristics of a single eye of a user can be acquired at a time, only one eye state can be observed, and the other eye state is easily ignored. The detection accuracy rate cannot achieve a satisfactory effect for the above reasons.

Disclosure of Invention

In order to overcome the defects in the prior art, the applicant provides an image acquisition optical structure of a pupil detector based on the existing patent and technology, and in this application, the known structure and technology will not be repeated.

The technical scheme adopted by the utility model is as follows: the utility model provides an image acquisition optical structure of pupil detector, its includes the shell and installs the central processing unit in the shell and installs two sets of image acquisition modules (certainly still have power supply battery, control button and control circuit etc. not described in detail) in the left and right sides in the shell, the image acquisition module includes eyepiece and the camera with central processing unit data connection, the image acquisition module still includes stimulus light source and infrared light source, and both pass through control circuit and control button and power supply electricity connection, stimulus light source and infrared light source are respectively around setting up not less than two in the lens cone outside that the shell front end held the eyepiece all around, the eyepiece includes infrared light filter, and infrared light filter is near infrared light filter, and this lens only allows through approximately wavelength range infrared light between 780nm ~ 1500nm promptly.

Furthermore, the stimulating light sources are arranged at the left side and the right side of the lens barrel of the eyepiece accommodated at the front end of the shell, so that pupils of people to be tested can be stimulated conveniently, the stimulating light sources can be light sources with different colors, such as white light, red light or green light, the stimulating light sources can emit light with different brightness levels under the control of the central processing unit, and the infrared light sources are arranged at the upper side and the lower side of the lens barrel of the eyepiece accommodated at the front end of the shell, so that auxiliary light supplementing is performed.

Further, a stimulating light source is respectively arranged at the left side and the right side of a lens barrel of which the front end of the shell accommodates the ocular, and three infrared light sources are respectively arranged at the upper side and the lower side of the lens barrel.

Further, the stimulating light source is arranged in the middle of each of the left side and the right side of the lens cone, the infrared light source is uniformly distributed along the edge of each of the upper side and the lower side of the lens cone, the layout is reasonable, and the image quality is improved.

Furthermore, inclined planes are arranged on the outer sides of the periphery of the lens barrel of the eyepiece accommodated at the front end of the shell, and the stimulation light source and the infrared light source are vertically arranged on the inclined planes.

Further, the inclined plane has an inclination angle of 10 degrees to 80 degrees, preferably one of 35 degrees, 55 degrees and 65 degrees, so that the stimulation light source and the infrared light source better act on eyes of a person to be detected, and the detection precision is improved.

Further, the eyepiece still includes protective lens, protective lens sets up in the infrared light filter outside, and both clearance sets up, can protect the infrared light filter, prevents that the infrared light filter from exposing outside for a long time and being worn and torn in the long-term use.

Still further, inside and be located the baffle that is provided with between two sets of image acquisition modules of shell, prevent mutual interference.

Still further, this design still includes the speaker, the speaker is installed respectively to the inside left and right sides of shell, and the speaker is connected with central processing unit, and it can send out the prompt tone of correctly using this design, if: please look ahead etc., can also install identification sensor on this design, connect identification sensor with central processing unit, when identification sensor detects that the place ahead of this design structure has personnel to accept the detection, control the speaker and send the suggestion sound.

Still further, the design also includes a flexible eye shield removably mounted to the front end of the housing.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The infrared light source is used for dividing the boundary between the pupil and the iris, and the high-efficiency infrared light source group is used for realizing the coverage of all eye movement point positions or all visual angles of a person to be detected when the infrared light source group is used for detection, so that the brightness of an eye image captured by a camera is uniform, the acquired image is clear, and the subsequent image processing is convenient; the stimulation light source is richer, the stimulation acquisition effect is better, and the image quality is high.

(2) The interference light source is filtered through the infrared filter, so that the interference problem of the stimulating light and the natural light on the infrared image is solved, and a clearer image is obtained.

(3) Pupil characteristic images of eyes of a person to be detected can be synchronously acquired, and detection is more comprehensive and reliable.

The utility model reduces the influence of the stimulating light and the natural light on the detection under the condition of improving the definition as much as possible, has higher detection accuracy on the pupils of the detected personnel, has small influence on the information acquisition of the pupils and has little interference on the detection result, so that the detection accuracy achieves a satisfactory effect, and is more beneficial to the development and application of pupil screening equipment.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic cross-sectional view of the present utility model.

Fig. 3 is a schematic view of the structure of the present utility model after concealing the eye mask.

In the figure: 1-shell, 2-camera, 3-stimulus light source, 4-infrared light source, 5-lens cone, 6-infrared filter, 7-inclined plane, 8-protective lens, 9-speaker, 10-eye shade.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 2 and 3: the utility model provides an image acquisition optical structure of pupil detector, shell 1 and install central processing unit and two sets of image acquisition module in shell 1, the image acquisition module includes eyepiece and with central processing unit data connection's camera 2, the image acquisition module still includes stimulus light source 3 and infrared light source 4, stimulus light source 3 and infrared light source 4 are around setting up not less than two around the barrel 5 outside of housing 1 front end holding the eyepiece respectively, the eyepiece includes infrared light filter 6, and infrared light filter 6 is near infrared light filter 6.

The stimulating light source 3 is arranged at the left side and the right side of the lens barrel 5 containing the ocular at the front end of the shell 1, and the infrared light source 4 is arranged at the upper side and the lower side of the lens barrel 5 containing the ocular at the front end of the shell 1. The left and right sides of a lens barrel 5 containing ocular lenses at the front end of the shell 1 are respectively provided with a stimulating light source 3, and the upper and lower sides of the lens barrel 5 are respectively provided with three infrared light sources 4. The stimulating light source 3 is arranged in the middle of each of the left side and the right side of the lens barrel 5, and the infrared light sources 4 are uniformly distributed along the edges of each of the upper side and the lower side of the lens barrel 5.

Inclined planes 7 are arranged on the outer sides of the periphery of the lens barrel 5, which is used for accommodating the ocular, of the front end of the shell 1, and the stimulation light source 3 and the infrared light source 4 are vertically arranged on the inclined planes 7. The inclined surface 7 has an inclination angle of 55 °.

Example 2

As shown in fig. 1 and 2, the present embodiment is different from embodiment 1 in that: the eyepiece further comprises a protective lens 8, and the protective lens 8 is arranged outside the infrared filter 6. A partition board is arranged inside the shell 1 and between the image acquisition modules. The embodiment also comprises a loudspeaker 9, wherein the loudspeaker 9 is respectively arranged on the left side and the right side of the inside of the shell 1. Also comprises an eyeshade 10, wherein the eyeshade 10 is detachably arranged at the front end of the shell 1.

While the present utility model has been described in detail with reference to the drawings, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the knowledge of those skilled in the art.

Claims

1. The utility model provides an image acquisition optical structure of pupil detector, includes shell (1) and installs central processing unit and image acquisition module in shell (1), image acquisition module includes eyepiece and camera (2) with central processing unit data connection, its characterized in that: the image acquisition module further comprises a stimulation light source (3) and an infrared light source (4), the stimulation light source (3) and the infrared light source (4) are respectively arranged around the outer side of a lens barrel (5) containing an eyepiece at the front end of the shell (1), the eyepiece comprises an infrared filter (6), and the infrared filter (6) is a near infrared filter (6).

2. The pupil detector image capturing optical configuration according to claim 1, characterized in that: the stimulation light source (3) is arranged at the left side and the right side of the lens barrel (5) containing the ocular at the front end of the shell (1), and the infrared light source (4) is arranged at the upper side and the lower side of the lens barrel (5) containing the ocular at the front end of the shell (1).

3. The pupil detector image capturing optical configuration according to claim 2, characterized in that: the stimulation light source (3) is arranged in the middle of each of the left side and the right side of the lens cone (5), and the infrared light sources (4) are uniformly distributed along the edges of each of the upper side and the lower side of the lens cone (5).

4. An image acquisition optical structure of a pupil detector according to any one of claims 1-3, characterized in that: inclined planes (7) are arranged on the outer sides of the periphery of a lens barrel (5) containing ocular at the front end of the shell (1), and the stimulation light source (3) and the infrared light source (4) are vertically arranged on the inclined planes (7).

5. The pupil detector image capturing optical configuration according to claim 4, characterized in that: the inclination angle of the inclined surface (7) is between 10 DEG and 80 deg.

6. The pupil detector image capturing optical configuration according to claim 5, characterized in that: the eyepiece further comprises a protective lens (8), and the protective lens (8) is arranged on the outer side of the infrared filter (6).

7. The pupil detector image capturing optical configuration according to claim 1, characterized in that: and a partition board is arranged inside the shell (1) and between the image acquisition modules.

8. The pupil detector image capturing optical configuration according to claim 1, characterized in that: the portable electronic device also comprises a loudspeaker (9), wherein the loudspeaker (9) is respectively arranged at the left side and the right side of the inside of the shell (1).

9. The pupil detector image capturing optical configuration according to claim 1, characterized in that: the eye patch is characterized by further comprising an eye patch (10), wherein the eye patch (10) is detachably arranged at the front end of the shell (1).