KR20130028519A - A camera display using the progressive lens for the car side mirror - Google Patents

Abstract

The present invention relates to a camera apparatus for a vehicle, and in particular, by using a multi-curve lens that is focused in a different form depending on the position of the lens surface instead of a lens having a single magnification, the binocular disparity is eliminated and the viewing angle is enlarged. The self-contained camera device equipped with a multi-curve lens that reduces blind spots and eliminates distortion and inaccurate distances, allows the driver to feel comfortable in the real world and prevents accidents and fatigue by preventing traffic accidents. It is about.
A vehicle camera apparatus equipped with such a multi-curve lens is a vehicle camera system comprising a car camera mounted on a vehicle side mirror or mounted in place of a side mirror and a display unit for playing back photographed images. The lens is installed.

Description

A camera display using the progressive lens for the car side mirror}

The present invention relates to a vehicle camera apparatus, and more particularly, a multi-curve lens is mounted in front of a camera mounted on a side mirror or a camera mounted in place of the side mirror so that an image captured by the camera can be reproduced on a display unit. The present invention relates to a vehicle camera apparatus equipped with a multi-curve lens that provides a wider field of view and eliminates binocular disparity, thereby improving driver convenience and safety.

In general, the vehicle side mirror is used to directly check the position of the vehicle close to the driver, but the vehicle side mirror is a blind spot is generated due to the limitation in the viewing angle, causing a car accident, so as to solve this problem As a method of securing a vehicle, a side mirror for a vehicle may use a mirror of a multi-curved surface.

However, the multi-curved surface used in the side mirror of the vehicle has a different focus depending on the position of the curved surface, and binocular parallax occurs as a result of the binocular driver, resulting in dizziness.

Meanwhile, due to the recent development of camera technology and image processing technology, a camera is mounted on a side mirror of a vehicle, or a camera is displayed instead of a vehicle side mirror to display a photographed image on a display, or an ultrasonic sensor is mounted inside a proximity vehicle. A system for alerting the location of a vehicle as shown or approaching is presented.

There are various types of such a camera for a vehicle, and a camera mounted on a double side mirror forms a hole in a driving direction of a vehicle, which is a mirror front part of a vehicle side mirror, as in Patent No. 846576, and the camera lens secures an image through the hole. This is to reproduce the display device in the interior of the vehicle, which has no effect on blind spots generated at the rear of the vehicle, such as changing lanes or parking while the vehicle is running.

In addition, by removing the vehicle side mirrors and taking images with a camera instead of the side mirrors and showing them on the display device of the vehicle interior, there is a patent such as Patent No. 650126 and Patent No. 866536, which eliminates the side mirror itself to improve the appearance of the vehicle. Although there is an advantage of being beautiful and receiving less air resistance while driving, there is a concern that the risk of accidents may be increased by increasing the range of blind spots while driving.

In other words, in a vehicle equipped with a side mirror, if the range reflected by the side mirror is determined to be narrow, the driver leans forward or moves from side to side to change the angle between the driver's eyes and the side mirror to adjust the angle of incidence and reflection. Compared to the mirror, it is possible to adjust the range, but the above-mentioned patents can not reduce the blind spots because the shooting range is constant without adjusting the position of the camera, and in particular, it is more difficult to adjust the shooting range of the camera while driving at high speed. Since it is difficult, there is a serious problem that a large accident can occur due to a mistake of the driver.

In order to solve this problem, Patent No. 820459 has proposed a technology in which a camera is mounted on the case under the side mirror while the side mirror is left untouched. However, such technology also safely eliminates the blind spot of the side mirror and the blind spot of the camera image. There is not enough.

Therefore, in the case of showing a close-up vehicle on the display through the vehicle camera, there is a way to increase the magnification of the lens mounted on the camera to show a large viewing angle in a limited size display in order to solve the problem of blind spots This reduces the size of the object as a whole and presents obstacles to the driver's perspective.

On the other hand, grasping the perspective of a close-up vehicle is another important factor for the driver's safe driving. Therefore, the close-up vehicle display system or warning system using a camera in the vehicle shows the size of an object as large as possible while securing the rear viewing angle as much as possible. Reducing the rent is a very necessary skill.

Accordingly, the present invention is advantageous in showing the size of an object while reducing binocular disparity and blind spots in an image display system photographed by a camera, thereby improving driver's driving comfort and safety.

In order to solve the above problems, the present invention is to install a multi-curve lens focused in the form of the object in accordance with the position of the lens surface instead of a lens having a single magnification in front of the self-contained camera A self-contained camera device equipped with a multi-curved lens is provided.

Vehicle camera device equipped with a multi-curve lens according to the present invention, the binocular disparity is eliminated by using a display coupled to the multi-curve lens and the camera, there is an effect that can enlarge the viewing angle to eliminate the blind spots.

In addition, since the binocular disparity can be eliminated, the curved surface design with the drastic focus change is possible, and thus the perspective of the object can be saved.

In addition, the continuity is ensured at the boundary surface to solve the distortion and inaccurate distance of the image, so that the driver of the vehicle can feel similar to the real life, and thus has an effect of preventing traffic accidents by preventing optical illusion and fatigue.

1 is a view illustrating a vehicle camera mounted on a conventional vehicle side mirror;
2 is a conceptual diagram of a vehicle camera system equipped with a multi-curve lens of the present invention
3 is a photographing image of a vehicle camera apparatus equipped with an aspherical lens according to the first embodiment of the present invention
4 is a radius of curvature in the front horizontal direction of the multi-curve lens of the first embodiment of the present invention;
5 is a photographed image of a vehicle camera apparatus equipped with a progressive multifocal lens according to a second embodiment of the present invention;
6 is a radius of curvature in the front horizontal direction of the multi-curve lens of the second embodiment of the present invention;

A vehicle camera apparatus equipped with a multi-curve lens according to the present invention is an automobile camera system mounted on a vehicle side mirror or mounted in place of a side mirror and a display unit for reproducing photographed images. A multi-curved lens is installed.

The curvature radius of the front curved surface of the multi-curve lens is constant in the vertical direction, and the curvature radius is constant from the inner side to the outer side in the horizontal direction, and gradually decreases from any point.

The front curved surface of the multi-curve lens has a constant curvature radius in the vertical direction, and is divided into an inner region, an intermediate region and an outer region in the horizontal direction, and the radius of curvature of the inner region and the outer region is different and has a constant value. The radius of curvature of the radius of curvature at both ends is the same as the radius of curvature of the inner and outer regions, and gradually changes in the middle region.

A vehicle camera equipped with a multi-curved lens according to the present invention will be described in more detail with reference to the accompanying drawings and embodiments.

In describing the embodiments, in order not to obscure the core of the present invention more clearly, descriptions of technical contents that are well known in the art to which the present invention pertains and are not directly related to the present invention are omitted.

FIG. 1 illustrates an exemplary view in which a vehicle camera is mounted on a conventional vehicle side mirror, and FIG. 2 illustrates a conceptual diagram of a vehicle camera system when a multi-curve lens is installed in front of a camera in a vehicle equipped with a vehicle camera. .

As shown in FIG. 1, a vehicle camera 100 is installed at a portion of an existing vehicle side mirror 10 or only a vehicle camera is installed in place of an existing vehicle side mirror (not shown). It is displayed on the inside of the display unit so that the driver can understand the state of the surrounding vehicle.

On the other hand, the present invention relates to a simple multiple curved lens is installed in front of the vehicle camera in the conventional vehicle camera system or the vehicle camera lens itself is made of a multi-curved lens, Figure 2 is a conceptual diagram showing this briefly.

Since the captured image is displayed on the display unit 200 in the same way as the vehicle camera is installed in the known vehicle side mirror and the captured image appears on the display unit, the operation relationship thereof will not be described here. The explanation will be given focusing on the change in the image of the display portion caused by the curved lens.

FIG. 3 is a photographing image diagram of a vehicular camera apparatus equipped with an aspherical lens according to the first embodiment of the present invention. In FIG. 4, the radius of curvature of the front horizontal direction of the multi-curve lens of the first embodiment is shown.

That is, the change in the radius of curvature of the multi-curved lens in the horizontal direction of the front of the camera 111 of FIG. 4 is divided into two areas, spherical and aspherical, and is constant in the spherical area.

At this time, since the radius of curvature in the vertical direction is constant, the horizontal and vertical magnifications of the object are the same in the spherical area, but only the horizontal magnification is continuously increased in the aspherical area, thereby reducing the object in the horizontal direction.

As shown in FIG. 3, when the object having a rectangular shape moves from the right side to the left side of the multi-curve lens due to the change of the radius of curvature, the shape is moved from the right side to the left side in the display unit. In both directions, the vertical direction, which is the height of the rectangular shape, is constant and the horizontal direction is reduced due to the change in the radius of curvature in the non-running region.

Meanwhile, since the radius of curvature of the multi-curved lens rear 112 has the same magnification of the single radius of curvature, the size of the object is changed as described above.

FIG. 5 is a photographic view of a vehicle camera apparatus equipped with a progressive multifocal lens according to a second embodiment of the present invention, and FIG. 6 illustrates a front horizontal curvature radius of the multi-curve lens of the second embodiment.

The radius of curvature in the vertical direction of the multi-curve lens of FIG. 6 is constant, but the radius of curvature in the horizontal direction is divided into three regions, and the radius of curvature is different in both side regions, but the radius of curvature gradually changes in the center region with a constant value. In this case, the radius of curvature at both ends of the central region is equal to the radius of curvature at both side regions thereof.

On the other hand, the radius of curvature in the central region may be changed in a linear one-dimensional form, but the curve design is made in terms of the synthesis of the free optical curved surface, which is a progressive and abrupt method by connecting two predetermined radius of curvature. It can be expressed by B-spline curve without change, and the Bezier surface of order (n, m) is given by the following equation.

Where P (i, j) is the control point and Bernstein polynomial is

Accordingly, the characteristic of the photographed video image displayed on the display is divided into three regions, two spherical and progressive regions, such as a multi-curvature lens, and as shown in FIG. In the central region, only the horizontal magnification is continuously increased, so that the object is continuously reduced in the horizontal direction.

As shown in FIG. 5, when the object having a rectangular shape moves from the right side to the left side of the multi-curve lens, the shape is changed from the right side to the left side in the display unit. The direction is constant and the width in the horizontal direction is different on both sides, but the width is gradually changed to be constant and equal to the boundary width of both sides in the central region.

In addition, the radius of curvature behind the multi-curve lens has a single radius of curvature as in the first embodiment.

Meanwhile, the foregoing embodiments have been described in that the front curved surface of the multi-curve lens is changed and the rear curved surface has a single radius of curvature, whereas the rear curved surface of the multi-curve lens is changed and the front curved surface has a single radius of curvature. Applicable even if present, the same effect

The detailed description thereof may be omitted since the description of the front curved surface of the previous embodiment may be applied to the rear curved surface, and the application thereof is the same.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be.

Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1.Car 10. Car side mirror
100. Car camera 200. Display unit
110. Multi-Curved Lens
111.Front multi-curve lens 112.Rear multi-curve lens

Claims (9)

In a car camera system comprising a car camera mounted on a vehicle side mirror or mounted in place of the side mirror and a display unit for playing back the captured image,
The vehicle camera device with a multi-curved lens, characterized in that the multi-curved lens is installed in front of the car camera.
The method of claim 1,
The front curved surface of the multi-curved lens has a constant radius of curvature in the vertical direction,
A curvature radius in a horizontal direction is constant from the inner side to the outer side, the vehicle camera device equipped with a multi-curve lens, characterized in that gradually decreases from any point.
The method of claim 1,
The front curved surface of the multi-curved lens has a constant radius of curvature in the vertical direction,
It is divided into inner region, middle region and outer region in the horizontal direction,
The radius of curvature of the inner region and the outer region is different and has a constant value, and the radius of curvature of the middle region is the same as the radius of curvature of the inner region and the outer region, and gradually changes in the middle region. Automotive camera device with a multi-curve lens.
The method of claim 3,
And a curvature radius in the outer region is smaller than the radius of curvature in the inner region.
5. The method according to any one of claims 1 to 4,
The rear curved surface of the multi-curve lens is a vehicle camera device equipped with a multi-curve lens, characterized in that the constant radius of curvature.
The method of claim 1,
The rear curved surface of the multi-curved lens has a constant radius of curvature in the vertical direction,
A curvature radius in a horizontal direction is constant from the inner side to the outer side, the vehicle camera device equipped with a multi-curve lens, characterized in that gradually decreases from any point.
The method of claim 1,
The rear curved surface of the multi-curved lens has a constant radius of curvature in the vertical direction,
It is divided into inner region, middle region and outer region in the horizontal direction,
The radius of curvature of the inner region and the outer region is different and has a constant value, and the radius of curvature of the middle region is the same as the radius of curvature of the inner region and the outer region, and gradually changes in the middle region. Automotive camera device with a multi-curve lens.
The method of claim 7, wherein
And a curvature radius in the outer region is smaller than the radius of curvature in the inner region.
9. The method according to any one of claims 6 to 8,
The front curved surface of the multi-curve lens is a vehicle camera device equipped with a multi-curve lens, characterized in that the constant single curvature radius.

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