KR200355279Y1 - Iris and normal photographing combined use camera - Google Patents

Abstract

The present invention relates to a iris and a general shooting camera, more specifically, to obtain a high quality iris image with a low-cost device using a simple structure of the camera, and to be used as a general shooting camera with iris shooting To an iris and a general photographing combined camera.

The present invention can accurately acquire the image for iris recognition within a short time, and it is easy to adjust the coincidence to the focal length for obtaining the iris image, and at the same time, the iris and general imaging using one optical axis and one CCD element It provides an iris and general photographing combined camera that is made to be possible, and the iris and general photographing are possible with one optical axis, so the structure is simple and can be manufactured at low cost. To function as a general camera for checking, to provide an iris and general shooting camera suitable for use such as an access control device (door phone), it is made to align the iris precisely, and a through-hole for forming a captured image optical path in the center The concave mirror 10 formed by drilling 11 and the concave mirror 10 through the concave mirror 10 back surface. An infrared lamp 20 for providing illumination for photographing the camera, and a camera 30 provided on the rear surface of the concave mirror to photograph the iris, which is selectively driven by a camera imaging optical path behind the through hole 11 of the concave mirror. An infrared cut filter 22 and a visible light cut filter 24 are formed so as to intervene.

Description

Iris and normal photographing combined use camera}

The present invention relates to a iris and a general shooting camera, more specifically, to obtain a high quality iris image with a low-cost device using a simple structure of the camera, and to be used as a general shooting camera with iris shooting To an iris and a general photographing combined camera.

In general, in a security system or the like, a method of performing authentication using an iris ripple of an individual is known.

Unlike the fingerprint, the authentication method using the iris has an advantage of being completed when the image is captured using the camera without contact with the iris.

A person's iris has a unique pattern for each person, enabling identification of an identity.

The iris imaging is required to be photographed so that the image quality belongs to a certain category for discriminating power, and since it is made in a non-contact manner, various proposals have been made to obtain a uniform image.

Conventionally, various iris recognition cameras have been proposed in order to obtain iris images of good quality.

For example, two types of cameras, a wide-angle camera and a narrow-angle camera, are configured to first recognize an image of a face by pattern matching among the captured images of the subject person by the wide-angle camera, and then position the right eye or the left eye in the image of the face. There is a type of proposal that is designed to calculate the angle of view, to direct the narrow angle camera, which is a telephoto camera, toward the iris, and to focus the iris with high precision using autofocus technology.

This is done by quickly moving the telephoto camera's focus lens to a preset position close to the point position in focus to shorten the time before focusing the narrow angle camera to the iris, and commencing searching for the focus position at that preset position. do.

For this reason, in the conventional iris imaging apparatus, two wide-angle cameras are prepared and the wide-angle cameras are arranged at the left and right centers of the narrow angle camera to calculate the distance to the subject by the stereo camera method.

However, such a conventional iris photographing apparatus has a disadvantage in that the cost is increased because a plurality of cameras are provided, and when the subject is moved out of focus while the camera is driven and the focus is automatically adjusted by moving the lens to adjust the focus search again. Since the driving for focusing is repeated, it takes a long time to acquire an image.

As a result, when using an auto focus camera using zoom in / out and tilt to construct an iris photographing device, the cost increases, but there are many disadvantages.

On the other hand, when looking at another conventional technology made to obtain an iris image using an economical fixed-focus camera compared to the auto-focus iris imaging device, it is the same method as Patent Publication No. 2001-70904 configured simply by using a PC camera Although it is conceived, it is difficult to obtain a high quality iris image because the user needs to move the focal length suitable for his iris shooting, and thus it is not suitable for application to iris recognition.

Devices that make economical iris photography using the fixed focus camera as described above have a problem that it is difficult to accurately position the user's iris at a certain focus position in common, and to induce a separate focal length for the user to observe Although there is a proposal to add a lamp, it is difficult to obtain an accurate iris image because it needs to move up, down, left, and right while observing the light of the induction lamp incident on the slope, so that it is difficult to obtain an accurate iris image, and it is also structurally complicated.

As a result, conventional iris imaging apparatuses are expensive, and when the image is obtained by tracking the position of the iris using a pan tilt and zoom camera, the constituent equipment is expensive, and the complicated operation must be performed to process the iris image, thus cost of manufacturing and operating the apparatus. It is very high and cannot be used universally, but it can be configured at a low price when using a fixed focus camera, but the quality of the image is deteriorated because the optimal point of iris shooting is set to the user's sense or arbitrary point. will be.

On the other hand, according to the conventional techniques there is no concise structure for using both iris and general shooting.

In order to solve the above problems, the present applicant can accurately acquire the image for iris recognition within a short time, and it is easy to adjust the coincidence to the focal length for obtaining the iris image. In order to provide an iris recognition camera that has high durability and can significantly reduce manufacturing cost, it is provided on the rear surface of the cold miller and the cold miller, which can be aligned to the iris, so as to penetrate the cold miller and provide illumination for iris photography. In order to devise an infrared lamp and a camera provided on the rear surface of the cold miller to photograph the iris, the iris recognition camera of Korean Utility Model Registration No. 321670 was previously registered.

In addition, an iris imaging optical path and a general imaging optical path are respectively formed in order to enable iris imaging and general imaging through a single CCD device, and one of the two optical paths is selectively incident on the CCD device. Korean Patent Application No. 2003-44386 has proposed a "portable terminal having an optical structure for both iris and general shooting" by including a splitter and a visible light blocking filter in the iris optical path and an infrared cut filter in the general optical path. .

This is mainly for miniaturization and application to terminals such as mobile phones and PDAs.

The present invention, which will be described in detail below, uses the applicant's pre-applying technology to simplify the position induction of the iris to increase the image quality of the iris to be photographed, and to provide a structure for enabling iris and general photographing using a single CCD element. To suggest.

The present invention can accurately acquire the image for iris recognition within a short time, and it is easy to adjust the coincidence to the focal length for obtaining the iris image, and at the same time, the iris and general imaging using one optical axis and one CCD element This is to provide a camera that combines iris and general shooting made possible.

The present invention is designed to allow the iris and general photography with one optical axis, so the structure is simple and can be manufactured at low cost, and the access control device functions as an iris analysis for identifying visitors and controlling entrance and general camera for visitors confirmation. It is to provide an iris and a general shooting camera suitable for such a use as (door phone).

The present invention made to achieve the above object is made to match the position of the iris, and through the concave diameter and the concave rear surface formed by drilling a through hole forming the optical image path in the center of the iris shooting illumination And an infrared lamp provided and a camera provided on the rear surface of the concave mirror to photograph the iris, and selectively driving the camera imaging optical path behind the through hole of the concave mirror to form an infrared cut filter and a visible light cut filter to intervene in the optical path. By what is done.

1 is a block diagram showing the configuration of the present invention.

Figure 2 is a front state configuration diagram of the present invention.

Figure 3 is an iris projection state induced in the concave mirror during iris imaging of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10 concave diameter 20 infrared lamp

30: camera

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the technical configuration of the present invention.

The present invention is an iris photographing camera having a short focus camera for acquiring an iris image and a plane mirror for positioning the iris in close proximity as shown in FIGS. Infrared lamp 20 which is formed of concave mirror 10 and penetrates through hole 11 of pinhole through the camera imaging optical path in the center of concave mirror 10 and provides illumination for iris photography on the rear surface of the concave mirror. ) Is formed so as to penetrate the concave mirror so as to be illuminated on the iris, and the camera 30 photographing the iris at the optical path position aligned with the linear axis on the axis of the through hole 11 of the concave mirror 10 is formed. The infrared cut filter 22 and the visible light cut filter 24 are formed in the optical path between the through hole 11 of the concave mirror 10 and the camera, so that any one of the infrared cut filter 22 and the visible light cut filter 24 is formed. Single The emitter is selectively formed so as to be positioned in the optical path.

The outer periphery of the concave mirror 10 is formed by forming a ring-shaped light guide 14 and an induction lamp 15 for illuminating the light guide outside the light guide.

On the other hand, the infrared cut filter 22 and the visible light cut filter 24 may be configured to interlock with the electronic drive actuator to be selectively positioned in the through hole 11 of the concave mirror 10 or to be interlocked with a manual actuator. have.

The filter driving actuator may include a small motor and the like, and the electronic or manual actuator may be configured by using known devices, and thus, a detailed structure thereof will be omitted.

Reference numeral 12 denotes a guide circle for iris position, and 32 a CCD element of the camera 30.

The operation of the present invention made as described above will be described in more detail below.

When the user wants to enter the device through iris recognition by approaching a predetermined iris recognition device, when the user approaches the eye close to the concave mirror 10, the user senses this in a controller (not shown) and turns on the infrared lamp 20. At the same time, the induction lamp 15 of the light guide 14 constituted on the outer circumference of the concave mirror 10 is turned on so that the entire ring-shaped light guide emits light to visually guide the position where the iris is to be located.

The infrared rays passing through the concave mirror 10 are illuminated by the shooting light on the user's iris, and the user refers to the outermost guide circle 12 where the iris is to be positioned while observing his own iris image formed in the cold mirror of the concave mirror. If the iris is placed in the proximity of the guide circle, the image is captured by the camera 30.

Here, the user guides his or her iris to the concave mirror 10 while guiding it to the focal length, and the short focus camera is provided so that the focal is formed at a distance where the iris is located in the guide circle.

At this time, when the iris is photographed by blocking the visible light by operating the actuator to position the visible light blocking filter 24 in the optical axis of the concave through hole 11, the iris is taken under the illumination of the infrared lamp 20.

On the other hand, when performing general photography using the CCD device 32 of the same camera 30, the visible light blocking filter 24 is separated from the photographing optical axis by driving the actuator, and the infrared blocking filter 22 is positioned on the optical axis. In order to allow sufficient visible light to be incident during general shooting, the incident light is mainly incident through the pinhole-shaped through hole 11 to take a photograph.

As described above, the iris recognition image and the general photographing image are acquired by using a camera equipped with a single CCD element, but the photographing optical axis is composed of one optical axis, and a filter is interposed selectively on the optical axis. To achieve this, it acts to easily achieve induction during iris shooting.

In addition, if the iris and general shooting combined camera device of the present invention is configured, the cost of the camera is low, and thus the device configuration cost is reduced, and the short focus camera excludes tilt and zoom in, out, and auto focus driving, and thus mechanical wear. And shorten the lifespan due to wear and tear, and at the same time, it is concisely configured to maintain the focal length by adjusting its iris position to the concave mirror, so as to exclude the situation such as the deviation of the focal length due to the user's shaking or position change. Iris imaging can be performed within a short time.

As described in detail above, the present invention can accurately acquire an image for iris recognition within a short time, and it is easy to adjust the coincidence to the focal length for obtaining an iris image, and simultaneously use one optical axis and one CCD element. Iris and general shooting are possible by using one optical axis, and iris and general shooting are possible, so the structure is simple and cheap manufacturing is possible. Iris analysis to identify visitors and control access, and general for visitor confirmation. It works as a camera and is a very practical design suitable for applications such as access control devices.

Claims (4)

In the iris photographing camera having a plane mirror for positioning the short focus camera and the iris in close proximity, It is formed by the concave mirror 10 of the cold miller to be able to match the position of the iris, but is formed through the through hole 11 of the pinhole through the camera imaging optical path in the center of the concave mirror 10, An infrared lamp 20 is provided on the rear surface of the concave mirror to provide illumination for iris photographing so as to penetrate the concave mirror and illuminate the iris. On the axis of the through hole 11 of the concave mirror 10 is formed by forming a camera 30 photographing the iris at the optical path position arranged in a linear axis, between the through hole 11 of the concave mirror 10 and the camera The infrared cut filter 22 and the visible light cut filter 24 is formed in the optical path, so that any one of the infrared cut filter 22 and the visible light cut filter 24 is selectively positioned in the optical path. Iris and general cameras. The method according to claim 1, wherein the outer circumference of the concave mirror 10 is formed by forming a ring-shaped light guide 14 and an induction lamp 15 for illuminating the light guide outside the light guide. camera. The method according to claim 1 or 2, wherein the infrared cut filter 22 and the visible light blocking filter 24 is configured to interlock with the electronic drive actuator to be selectively positioned in the through hole 11 of the concave mirror (10). Iris and general camera. The method according to claim 1 or 2, wherein the infrared cut filter 22 and the visible light cut filter 24 is characterized in that it is made to interlock with a manual actuator to be selectively positioned in the through hole 11 of the concave mirror 10. Iris and general cameras.