JP2011178210A - Two-sheet mirror type erected image rear view mirror, side mirror device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem: in use of a conventional one-sheet mirror, a driver must turn around in viewing a sideway or rearward image because the driver cannot look it at on the front side and, in use of two-sheet plane mirror or convex mirror, an image is vertically reversed on a rear view mirror or horizontally reversed on a side mirror. <P>SOLUTION: In obtaining an erected image using a minimum two sheets of mirrors, one mirror is installed toward a shooting position of a sideway or rearward image and the other is installed toward around driver's front side. The two sheets of mirrors are disposed to face each other in a dog-legged shape or an open angle shape, so that the driver can look at an erected image, paying attention to the focus of the mirror, for example, by inverting an image at the focus of a reflecting surface of the mirror. The mirrors are further curved to expand or contract the image for high visibility. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

   The present invention relates to a rearview mirror and a side mirror that are attached to a head such as a helmet for a passenger such as a motorcycle or a bicycle and view a rear side view and a side view in front of the front eye.

The conventional side mirror using a single mirror is for temporary confirmation of the rear side of the side. In the case of the rear side, the side mirror is not useful at all. (Patent Document 1). In order to reduce the turning angle, when two plane mirrors or convex mirrors are placed side by side in a square shape, the left and right sides of the image are reversed, and when plane mirrors or convex mirrors are placed side by side, the top and bottom of the image are inverted. , The sense of being hard to see becomes strange and I feel stress. When using three plane mirrors or convex mirrors, an upright image (up and down images when looking back and up and down when looking at the front mirror, and left and right images when looking back and looking back) Can be obtained when looking at the front mirror, but the optical axis becomes longer and the image becomes smaller, the number of reflections of the image increases, the light attenuates and becomes darker (Patent Document 2). ). There are also video cameras that shoot the back and sides and view them on a monitor, but they require a power source, are expensive, have a complicated mechanism, and are inferior to mirrors and mirrors in image definition.

In the case of high-speed driving, if you look away from the front for a moment to turn around, you may lose sight of the scenery in front and may cause a collision accident. In addition, there is a possibility of contact even when traveling at a low speed, which is dangerous. If an accident occurs, you will not only suffer from injuries and other injuries, but will also inconvenience others and cause compensation.

Patent Publication 2008-110187 Helmet monitors a single mirror on the side of the head, and when looking directly behind, turn the face at a large angle, or if the turn angle is small, the mirror is enlarged diagonally forward and laterally. Must stick out. Two units are required to see the left and right. JP-A-5-3191753 Erect image is viewed with plane mirrors. Since it is three mirrors, the total reflectance is smaller than the images of one or two mirrors, the image is dark and the optical axis is The image becomes smaller as it gets longer.

For a conventional one with one mirror installed on the side and looking accurately at the back, the neck, head must be greatly shaken sideways, the line of sight and face should be directed, and as much as possible to avoid shaking the head Two mirrors are required if the mirror has to be protruded largely diagonally forward, and it is easy to hit other objects and is unobtrusive and unsightly.
When two plane mirrors or convex mirrors are used in combination with a square shape or a square shape, the top and bottom or left and right images are reversed and difficult to see.

Two mirrors facing each other like a square shape, with the reflection surface facing upside down (the image is upside down) in the vertical direction and the reflection surface image in the upright side in the horizontal direction However, if the device is tilted and used as a side mirror, the vertical direction and the horizontal direction are switched.
Since the reflected image is brighter and larger as the number of mirrors is smaller, in order to obtain an upright image with the smallest two mirrors that can obtain the position difference,
To make an inverted image viewed by an observer into an upright image using two mirrors, the image is inverted upside down with one of the mirrors and the image is not inverted with the other mirror. .
In order to make an erect image viewed by an observer into an erect image using two mirrors, the image is inverted left and right with both two mirrors, or the image is not inverted with both mirrors.
(1) The vertical direction of the reflecting surfaces of the two mirrors is arranged as a parabolic mirror in the upper and lower parts of the head and in a square shape, and the focal points of the two parabolic mirrors are almost shared and matched. In addition to making the two parabolic mirrors have the same collinear line, they may be different. If a desired part of the parabolic mirror is employed, the present device having a desired size and shape can be obtained. One mirror may be bent to form two parabolic mirrors. Moreover, it is good also considering only the part of those as a mirror. If the two paraboloidal mirror focal points are approximately coincident, the lens barrel can be rotated up and down or left and right around the common focal point. The vertical direction of the reflecting surface of one or two paraboloidal mirrors is further curved outward or inwardly within a range where the reflected image seen by the observer is not inverted, and an approximate paraboloidal mirror is obtained. May be enlarged or reduced. In short, it is curved and bent so as to expand and contract. The horizontal direction of the reflecting surface of one or two mirrors may be curved or bent outward or inward so that the reflected image seen by the observer is enlarged or reduced within a range that does not invert, in addition to a flat or convex surface.
2 The vertical direction of the reflecting surface of one of the reflecting surfaces of the two mirrors and the objective mirror (of the two mirrors, the mirror away from the observer) is within the range where the image is not reversed. The range in which the image is reversed on the reflecting surface of the other mirror and eyepiece (of the two mirrors, the one closest to the observer) as a bent concave mirror (bends the focal point of the concave mirror behind the other mirror) An image of the vertical direction of the reflecting mirror of the objective mirror or one of the reflecting surfaces of the two mirrors, or a concave mirror bent within (the bending of the concave mirror so that the focal point of the concave mirror is in front of the viewer's eyes) A concave mirror that is bent within the range in which the image does not invert the vertical direction of the reflecting surface of the other mirror and eyepiece as a concave mirror that is bent within the range where the mirror is inverted (the focal point of the concave mirror is bent in front of the other mirror) (Bend the focal point of the concave mirror behind the eyes of the observer), flat mirrors, convex mirrors and observers Can get an erect image. The focal position and distance of the plane mirror is equivalent to being at infinity.
3 The horizontal direction of the reflecting surface of the two mirrors is a plane mirror, a convex mirror, a concave mirror that is bent within the range where the image is not reversed (the concave mirror is bent so that the focal point of the concave mirror is behind the other mirror or the observer) or two An observer can obtain an erect image by using a concave mirror (bending the focal point of the concave mirror in front of the other mirror or the viewer) that is bent within a range in which the image is inverted in the horizontal direction of the reflecting surface of the mirror.
The reflection surface of one or two mirrors may be bent or bent outward or inward so that the reflection image viewed by the observer is enlarged or reduced within a range in which the reflection image is not inverted.
Since the two mirrors are set apart, the image of the objective mirror is reflected on the eyepiece, so the area of the objective mirror may be larger than the area of the eyepiece, or the area of the eyepiece may be smaller than the area of the objective mirror. Also good. Moreover, you may make it enlarge the image of an objective mirror with an eyepiece.
The shape of the mirror surface may be any shape such as a square, triangle, or round shape, but it should be easy to see. A colored mirror may also be used. It is possible to delete, extract and select specific color images. The objective and the eyepiece may be interchanged so as to look from the objective side rather than the eyepiece side. It is desirable that the image shown in the eye is not distorted. However, if the image is within a recognizable range, the mirror surface may be further distorted by bending or bending the mirror surface in order to enlarge or reduce the image. In addition to focusing on one point, the focal point may be within a range of a plurality of points, surfaces, or spaces. Other than the front of the objective and the eyepiece, it may be shielded from light with a plate or the like so that unnecessary images do not enter, or the front of the objective and eyepiece may be blocked with transparent plastic to prevent dust and rain . A transmissive lens for enlarging, reducing, or correcting the image may be placed. In addition, the objective mirror and eyepiece arranged so that the reflecting surface faces the shape of a square are convex on the front surface of the objective mirror or the eyepiece as a plane mirror or convex mirror, or between the objective mirror and the eyepiece in a straight line like a triangular prism. Alternatively, an erect image may be obtained by inverting the image by placing a transmissive convex lens such as glass having a focal point that is inverted or inverted only in the vertical direction.
This device obtains an erect image with an objective mirror and two eyepieces. The second eyepiece is used as the eyepiece of the first device and the third objective is used as the second eyepiece. If you put a mirror and look into the third eyepiece, you can see an erect image. An odd-numbered apparatus may be provided to obtain an erect image.

Since this device uses physical and mechanical optical mirrors, it can produce ultra high-definition images compared to video monitors and looks three-dimensional. Since it is an ultra-high resolution image, the pixels do not become rough even when enlarged. Create a reflective mirror or mirror curved with a reflective material such as aluminum and other thin and light metal instead of expensive, thick and heavy transmissive optical glass or plastic lens to enlarge or reduce the image, or make the mirror surface Since it only needs to bend and bend, it is very light and can be easily manufactured. Since the image is not upside down or left and right, there is no sense of incongruity and no fatigue. Because it is simple in construction, it can be worn lightly on the helmet and head, and the two mirrors are shifted to create a position difference so that you can see the image.
In the case of a parabolic mirror, if the quasi-line, focal length, bending rate, etc. of the two mirrors are set arbitrarily, this device of a desired size and shape can be made. If the eyepiece is placed in the visible range, the head should not be shaken at all or only slightly. Since the entire image emitted from the reflecting surface of the objective mirror passes through the focal point and enters the reflecting surface of the eyepiece, the image is bright. The eye of the observer is not reflected because it is transparent from the eye to the observation object.
If it is attached to the top of the head, it is safer and less likely to come into contact than when it is installed horizontally. Anyone can easily handle, detach and repair. The rear surface can be seen by projecting the objective mirror like a periscope. The higher the objective is placed, the wider the back is visible. The objective mirror may be curved or bent so as to be reflected in a wide range. The rear image can be seen over a wide area at once, and it can also serve as a side mirror. You don't get tired because you don't shake your head and line of sight from side to side and up and down. If the eyepiece is installed in a position where one eye can be seen, the rear image and the front image can be viewed simultaneously. If it is installed in a visible position above both eyes, it looks three-dimensional. Even if the eyepiece can obtain a surface reflection image and a transmission image such as a half mirror or transparent glass, the rear image and the front image can be overlapped at the same time. If the device is tilted sideways and the mirror is placed like a letter C, the image can be seen shifted to the left and right, and can also be used as a right or left side mirror. The objective mirror and its holder, and the case may be a half mirror or a surface reflection image and a transmission image of transparent glass. It is safe for a person behind to see the transmission image in front of the objective mirror. If you do not want to see the image, you can remove it from view by moving the eyepiece. If the wearer of this device is attached not only to a driver such as a motorcycle but also a passenger in the rear seat, it is still safe to advise the driver. This device can also be used for back mirrors in cars such as four-wheeled vehicles. The objective mirror is placed on the roof, and the eyepiece is passed through the roof, for example, at the position of the back mirror or at the position where the eyepiece image outside the vehicle can be seen. The apparatus may be fixed and installed at the front of a motorcycle such as a motorcycle.

Inexpensive, general-purpose parts, minimum number of parts, simple structure and easy installation and operation.

FIG. 1 is a diagram showing the apparatus mounted on a helmet as an example.
The device 1 and the helmet 2 are connected by a metal fitting 3 for adjusting the device 1 by moving the device 1 back and forth, and the device 1 is connected by a metal fitting 4 for adjusting the angle by moving the device 1 up and down with respect to the eyes. And easy to use to suit the wearer. The device 1 may be connected to a face guard in addition to the helmet 2. If you raise the face guard, it disappears from view with the face guard. The head may be worn with a band or a hat.

FIG. 2 is a diagram illustrating an inverted surface and a vertical surface of an image of this apparatus using two parabolic mirrors.
Rays incident on the paraboloid parallel to the X axis (optical axis) exit through the focal point. A light beam incident through the focal point has a property of exiting from the paraboloid parallel to the X axis.
A light beam incident in parallel to the X axis in the direction perpendicular to the reflecting surface of the parabolic objective mirror M1 (image is inverted), the image is reflected and passes through the common focal point F1 of the objective mirror M1 and the eyepiece M2, and is parabolic. The eyepiece M2 is reflected in the direction perpendicular to the reflecting surface of the eyepiece M2 (the image is inverted) and comes out parallel to the X axis, reaching the eyes. Since the positional relationship between the incident images A and B and the reflected images A and B is the same as shown in FIG. 2, an upright image can be obtained. X1 and X2 are perpendicular lines of the objective mirror M1 and eyepiece M2, and a1 and a2 are the distances. By rotating the X axis of the objective mirror M1 or eyepiece M2 up and down and in the vertical direction by the desired θ1 and θ2 degrees about the focal point F1, the desired incident image and reflected image angles in the vertical direction can be obtained. By rotating the X axis in the horizontal direction and a desired angle about the focal point F1, the desired horizontal incident image and reflected image angles can be obtained.
The horizontal direction of both the objective mirror M1 and the eyepiece M2 (image is upright), the horizontal plane is a plane or convex surface,
If the left and right images of the horizontal plane of the objective mirror M1 are recessed and bent so as not to be reversed, and the eyepiece M2 is also bent and bent so as not to reverse the left and right images, an upright image that is not reversed left and right is obtained.
Further, the concave mirror M1 and the eyepiece M2, which are bent so that the focal point of the concave mirror is in front of the eyepiece so as to invert the left and right images of the horizontal plane, also focus the concave mirror so that the left and right images are inverted. If you bend it so that it is in front of your eyes, you can get an upright image that is the opposite and not the left and right.

FIG. 3 is a diagram illustrating a vertical plane of the apparatus using a plane mirror and a concave mirror or a curved mirror and a curved mirror. The horizontal plane of this device is the same as in Fig. 2, and the horizontal plane of the objective mirror and eyepiece is flat or convex, and if it is bent so as to invert the left and right images of the horizontal plane of the objective mirror, If the left and right images are bent so as to be reversed, an upright image that is not reversed left and right is obtained. The horizontal plane of the objective mirror and eyepiece is concave or convex so that the left and right images of the horizontal plane of the objective mirror are not reversed. If the eyepiece is concave or convex so as not to reverse the left and right images, the horizontal plane is reversed. Not get an erect image. The combination of the curved mirrors may be any planar shape in which the reflecting surface is concave or convex as long as the observer can recognize an image passing through the reflecting surfaces of the two mirrors. Any combination of a plane mirror and a concave mirror may be used, as long as the observer can recognize an image passing through the reflecting surfaces of the two mirrors. More broadly speaking, any mirror can be used as long as an image through two reflecting surfaces can be recognized. Curved and concave mirrors include parabolic mirrors.
The image reflected by the reflecting surface of the plane mirror 7 of the objective mirror is reflected by the reflecting surface of the concave mirror 8 having the focal point F2, and viewed at E1 after the focal point F2. If the concave mirror 8 is bent to change the included angle θ3, the enlargement ratio of the image can be changed. By attaching a horizontal rotation axis AX1 to the plane mirror 7 and connecting it to a holding frame or a lens barrel, the incident angle of the vertical plane of the image can be changed within a range where the image does not deviate. Alternatively, if the horizontal rotation axis AX2 is attached to the concave mirror 8 of the eyepiece and connected to the holding frame or the lens barrel, the reflection angle of the image on the vertical plane can be changed within a range where the image does not deviate. The holding frame or barrel of the plane mirror 7 and the holding frame or barrel of the concave mirror 8 may be bent up and down around a common horizontal axis AX3. The plane cross-sectional shape of the holding frame or barrel can be rotated like a circle. In this way, the incidence and reflection angles of the vertical and horizontal images can be changed. The circle numbers 2 and 3 in FIG.
The image is reflected by the reflecting surface of the concave mirror 8 having the focal point F3, the image is inverted at the focal point F3, and is incident on and reflected by the reflecting surface of the plane mirror 7 placed after the focal point F3. to see. If the concave mirror 8 is bent and the included angle θ3 is changed, the enlargement ratio of the image can be changed.
The image is reflected by the reflecting surface of the concave mirror 8-1 having the focal point F4, the image is inverted by the focal point F4, the image is incident and reflected by the reflecting surface of the concave mirror 8-2 having the focal point F5, and the focal point F5 of the reflecting surface. Look at E3 before. If the concave mirror 8-2 is placed in front of the focal point F4, the image is reflected by the reflecting surface of the concave mirror 8-1 having the focal point F4 which is the same as the circled numeral 1 in FIG. 3, the image is inverted at the focal point F4, and the focal point F7. The image is reflected by the reflecting surface of the convex mirror 9-2 having a mirror and viewed in front of the reflecting surface of the convex mirror 9-2.
The image is reflected by the reflecting surface of the convex mirror 9-1 having the focal point F6, the image is incident and reflected by the reflecting surface of the concave mirror 8-2 having the focal point F5, and is viewed at E4 after the focal point F5.
If the concave mirror 8-1 or the concave mirror 8-2 is bent to change the included angle θ4 or θ5, the magnification ratio of the image can be changed. The reduction ratio of the image may be changed by bending the convex mirrors 9-1 and 9-2 to change the included angles θ6 and θ7. ... Circle number 3
The convex mirror looks small, but if it is bent further into a convex shape, the image becomes smaller and the reduction ratio becomes larger, and if it is returned, the reduction ratio becomes smaller. Since the imaginary focal position of the convex mirror is on the opposite side of the mirror as shown in the figure, the image is not reversed depending on the viewing position because it is always viewed after the focal point.
Although the concave mirror appears large, if the image is further bent into a concave shape, the image becomes larger and the enlargement ratio increases, and if it is returned, the enlargement ratio decreases. Since the focal position of the concave mirror is on the side of the mirror as shown in the figure, the image is inverted depending on the viewing position as on the left and right of the focal point.

FIG. 4 is a perspective view in which the vertical or horizontal plane of the reflecting surface of the objective mirror or eyepiece is bent.
The horizontal direction of the reflecting surface, the horizontal plane 10 is a straight line, the plane is the vertical direction of the reflecting surface, the vertical surface 11 is a curved line curved outward or inward, curved surface.
Horizontal surface of reflecting surface, horizontal surface 10, vertical direction, vertical surface 11 and curved surface bent outward or inward.

FIG. 5 shows the apparatus installed in a motorcycle or automobile.
A holding frame 13 is installed on a handle 12 such as a two-wheeled vehicle, and an objective mirror 14 and an eyepiece 15 are attached thereto. It is desirable that the objective mirror 14 is at a position where the rear image can be seen on the driver's head, and the eyepiece 15 is at a position where the driver sees the head so as not to shake his head. The handle 12 is inserted and fixed with screws 16 so that the angle of the holding frame 13 can be rotated and adjusted. The height of the objective mirror 14 is fixed by screws 17 so as to change the height. The device is fixed with screws 18 so as to be detachable. A side mirror 19 may be installed for safety. If this device is installed, it is not necessary to prepare a helmet with this device every time you get on. Convenient, safe and fun if accessories such as umbrella, watch, car radio, car TV, car navigation are attached to the holding frame 13
Reflection of objective mirror 14-2 with objective mirror 14-1 and eyepiece 15-1 installed outside the automobile, objective mirror 14-2 installed outside the automobile, and eyepiece 15-2 installed indoors The part where the image hits the roof may be cut off, or the cutout part of the roof may be closed with a transparent material such as glass, or the roof may be made of a transparent material.

This device is a rear-view mirror / side-mirror device that can be viewed without feeling uncomfortable with the rear image facing forward, and can be used in the field of surveillance and safety purposes.

This device is mounted on a helmet. The curved surface of the mirror is used as a paraboloid. It is a figure which obtains an erect image which is not left-right or upside down by combining two mirrors of a curved surface or a plane. It is the perspective view which bent the vertical surface or horizontal surface of the mirror. This device is mounted on a motorcycle, bicycle, automobile or the like.

DESCRIPTION OF SYMBOLS 1 This apparatus incorporating an objective mirror and an eyepiece 2 Helmet 3 Adjustment bracket 4 Adjustment bracket 5 Fixed screw 6 Fixed screw 7 Plane mirror 8 Parabolic mirror, concave mirror 8-1, 8-2 Concave mirror 9-1, 9-2 Convex mirror 10 horizontal plane 11 vertical plane 12 handle 13 holding frame 14, 14-1, 14-2 objective mirror 15, 15-1, 15-2 eyepiece 16, 17, 18 fixed screw 19 side mirror

Claims (7)

In order for the observer to see the rear image of the erect image, the reflector of the objective mirror is directed to the rear image at the position where the rear image is visible, and the reflector of the eyepiece is directed to the observer at the position where the observer can see Install the mirrors so that they face each other, make the reflecting mirror of the inverted part of the rear image of the objective mirror a concave mirror, and invert the inverted part of the image after the incident so that the concave mirror is focused in front of the eyepiece. In order to prevent the incident image from being inverted by the reflecting mirror of the eyepiece, the reflecting mirror of the inverted image of the rear image of the eyepiece should be focused on the plane mirror, convex mirror, or concave mirror behind the observer's eyes. Reflected as a concave mirror bent into a concave mirror, or the inverted mirror of the rear image of the objective mirror as a concave mirror with the plane mirror or convex mirror or concave mirror focused on the back of the eyepiece, and inverted the inverted portion of the incident rear image Without incident, and the inverted part of the rear image of the incident image is the eyepiece. As inverted by the reflecting mirror, the reflecting mirror inverted portion of the image after the eyepiece as a concave mirror, a rearview mirror which is to be the focal point of the concave mirror in front of the viewer's eyes, the side mirror device A horizontal rotation axis is attached to the objective mirror so that the angle of incidence or reflection of the image on the vertical or horizontal plane of the image can be changed within a range that does not deviate from the image, and this is connected to the holding frame or barrel of the objective mirror. Rotate within the range that does not deviate, or attach a horizontal rotation axis to the eyepiece, connect it to the eyepiece holding frame or barrel and rotate it within the range where the image does not come off, or hold the objective frame or barrel 2. The holding frame or the lens barrel of the eyepiece can be bent up and down about a common horizontal axis, or the plane cross-sectional shape of the holding frame or the lens barrel of the objective mirror and the eyepiece can be rotated like a circle. Rearview mirror, side mirror device In order for the observer to see the rear image of the erect image, the reflecting surface of the objective mirror is directed to the rear image at the position where the rear image is visible, and the reflective surface of the eyepiece is directed to the observer at the position where the observer can see , The inverted part of the rear image of the objective mirror and eyepiece is a parabolic reflector, and the focal point of the objective mirror and the reflector of the eyepiece is approximately matched, and the rear image is A rearview mirror or side mirror device that reflects and enters the reflecting mirror so that the reflected image is inverted at the focal point, and the inverted reflected image is incident and reflected on the reflecting mirror of the eyepiece. In order to change the image incident angle of the objective mirror or the image reflection angle of the objective mirror, the objective mirror or the reflector of the eyepiece is moved up and down or left and right around the focal point where the focal points of the objective mirror and the reflector of the eyepiece are roughly matched. The rearview mirror and side mirror device of claim 3 In order to prevent the upright part of the rear image seen by the observer from being inverted, the reflecting surface of the upright part of the rear image of the objective mirror is a flat mirror or a concave mirror bent so that the focal point of the concave mirror is behind the eyepiece. The reflecting surface of the upright part of the rear image of the spectacles is a plane mirror, a convex mirror, or a concave mirror in which the focus of the concave mirror is behind the observer, or the upright part of the rear image seen by the observer is not inverted. A concave mirror with the reflecting surface of the erect part bent so that the focal point of the concave mirror is in front of the eyepiece, and the reflecting surface of the erecting part of the eyepiece is such that the concave mirror is in front of the observer The rearview mirror and the side mirror device according to claim 1 or claim 2 or claim 3 or claim 4 The vertical surface or horizontal surface of the reflecting surface of the objective mirror or eyepiece is bent into a convex shape or a concave shape so as to be enlarged or reduced within a range in which an image seen by an observer is not inverted. The rearview mirror and the side mirror device according to claim 4 or 5 The objective mirror is installed at a position where the head or the handle of the two-wheeled vehicle or the rear image outside the vehicle can be seen, and the eyepiece is installed in front of the face where the observer can see, or the handle of the two-wheeled vehicle or the position inside or outside the vehicle. The rearview mirror and the side mirror device according to claim 3 or claim 4 or claim 5 or claim 6

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