CN1250166A - Lens for rear-vision mirror of automobile - Google Patents

Abstract

The mirror body has the same thickness of action face and non-action face, and is one aspheric asymptote curved surface in both horizontal or lengthwise direction and vertical or widthwise direction. The mirror body may have one horizontal and vertical main mirror part as well as one horizontal side view expanding part and one vertical bottom view expanding part. The reference mirror with the mirror body has wide viewing angle and no dead angle and is easy to produce in large scale.

Description

The eyeglass body of automobile rearview mirror

The present invention relates to a kind of optical viewing arrangement, particularly relate to a kind of eyeglass body of automobile rearview mirror.

Automobile rearview mirror is can notice near the situation that driving is for the driver, to guarantee traffic safety.Generally speaking, automobile rearview mirror includes room mirror and the outer left and right sides rearview mirror of car, room mirror is the thing condition of looking the car rear in order to shine, the left and right sides rearview mirror then provides the thing condition at the oblique rear of car body, allow the driver driving change the track, about all can provide than wide visual field when changing one's profession into and moveing backward, to guarantee safe driving.As everyone knows, no matter be interior rearview or left and right sides rearview mirror, it all has certain limit according to the scope of looking, and exists the photograph that influences traffic safety and look the dead angle.Certainly, the safety of whether driving a vehicle, except that need are observed traffic rules and regulations by driver itself and are concentrated on constantly driving, undeniable, according to the outwardness of looking the dead angle, be often to cause to allow the reason of the unscheduled event that the people regrets, for example, the traveling vehicle desire changes the track and changes into, look dead range because the closely interior back car of oblique side is positioned at the photograph of rearview mirror just, the driver changes the track rashly under situation about can't discover, very easily cause the dangerous sign or phenomenon of front vehicle emergency brake, even dangerous traffic hazard such as can bump.If this kind phenomenon takes place on highway, then the harmfulness to personal safety is serious especially.Here it is because general automobile rearview mirror all exists according to looking the dead angle, and for fear of because of there is issuable danger in the dead angle, the little mirror of a sphere is installed additional in the driver regular meeting of having the inclination on rear-vision mirror face, to reduce according to the scope of looking the dead angle.Yet this kind utilizes the cemented little mirror of double faced adhesive tape, and not only easily because of the car body long-term vibration can drop, and it also hinders the attractive in appearance of car body after installing additional.

The objective of the invention is to realize by following technical scheme.

A kind of eyeglass body of automobile rearview mirror, it is characterized in that, the eyeglass body of this rearview mirror is the thickness Z n that is identical between acting surface and non-acting surface, the horizontal long side of aforementioned eyeglass body by Xo to XL section and vertical to wide side by Yo to YL section, it is to be that aspheric surface is finished primary mirror portion, side and expanded the portion of looking, the end and expand the portion of looking with gradual curved surface.

Purpose of the present invention can also adopt another technical scheme to realize.

A kind of eyeglass body of automobile rearview mirror, it is characterized in that, the eyeglass body of this rearview mirror the level of acting surface to long side section (Xo Xn) and vertical in wide side section (Yo Yn) areal extent, it forms a plane primary mirror portion, by the horizontal direction of the Xn of primary mirror portion section to XL, more extend into side and expand the portion of looking with gradual curved surface, by the Yn section of primary mirror portion vertical to YL, also be to extend into end expansion with gradual curved surface to look portion, the eyeglass body of previous constructions, its non-acting surface is the shape structure that is entirely identical to acting surface, and makes the eyeglass body be identical thickness Z n between acting surface and non-acting surface.

Concrete structure of the present invention is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is the eyeglass body structure schematic perspective view of first embodiment of the invention.

Fig. 2 is a right TV structure synoptic diagram of the present invention shown in Figure 1.

Fig. 3 is a plan structure synoptic diagram of the present invention shown in Figure 1.

Fig. 4, Fig. 5, Fig. 6 are the eyeglass body structure synoptic diagram of second embodiment of the invention.

Fig. 7 is that primary mirror portion, the side of eyeglass body of the present invention expands the portion of looking, the floor map of facing of portion is looked in end expansion.

See also Fig. 1,2,3, and it is shown in Figure 7, the eyeglass body that these accompanying drawings disclosed is the first embodiment of the present invention, the eyeglass body is to have acting surface 1 and non-acting surface 2, acting surface 1 is the face of facing that the driver inspects, 2 of non-acting surfaces are that the back of the body that can allow image be shown by acting surface 1 through handling is looked face, and according to the topmost forward of rearview mirror, the lateral, the end to usability, eyeglass body in this manual can be divided into primary mirror portion 3, portion 4 is looked in the side expansion and portion 5 is looked in end expansion, as Fig. 1, utilize hypothetical dashed region branch to express aforementioned primary mirror portion 3 among Fig. 4 and Fig. 7, portion 4 is looked in the side expansion and the portion 5 of looking is expanded at the end.The scope that the eyeglass body is constituted to wide side (Yo YL) to long side (Xo XL) and vertical in level, it can generally divide serve as reasons (Xo Xn) length and (Yo Yn) primary mirror portion 3 that width constituted, be expanded the portion 4 of looking, is expanded and look portion 5 etc. and shine viewed area for (Xn XL) end that (Yn YL)/2 homalographics constituted by (Yn YL) (Xo Xn) and summary for (Xn XL) side that (Yn YL)/2 homalographics constituted by (Xn XL) (Yo Yn) and summary.Aforementioned eyeglass body has identical thickness Z n to long side (Xo XL) and vertical to acting surface 1 and 2 of the non-acting surfaces that wide side (Yo YL) all forms aspheric gradual curved surface and eyeglass body towards level by starting point (Xo Yo).The eyeglass body structure that has same thickness Zn and gradual curved design by this kind, side and end quadrature angle can not only increase, also because the eyeglass body is to adopt gradual curved design, primary mirror portion 3, side expand the portion 4 of looking, boundary line between portion 5 three positions is looked all unsubstantial in end expansion, make the scenery also can clear manifesting and do not have and wreck and the phenomenon of torsional deformation, further can allow the manufacturing of optical mould can be simple and easy fast, can keep product property and mass production.

Because the eyeglass body is gradual curved design, not only allow the driver see general scenery clearly by primary mirror portion 3 according to angle, obviously also shine the scene of looking and slightly have and amplify functions of use clearly, also can not cause the phenomenon generation of the obvious torsional deformation of image as spherical mirror than general closed planar mirror.When expanding, gradual surface extension to side looks portion 4 and the portion 5 of looking is expanded at the end, accurately reaching under the pragmatic curvature design, this side expands looks angle and the scope that scenery can be reflected in 4 in portion, can stop driver's photograph and look the dead angle, and the scene that is manifested can not produce the drawback superimposed and distortion of wrecking.Expand the gradual curved surface look portion 5 and then can see near the automobile back wheel scenery clearly at the end, helps the carrying out of moveing backward, and can avoid automobile rear to hit lower hardware thing, for example is the cement base of electric power case or hose saddle, safety island revetment or the like.

Another preferable feasible embodiment of the present invention, can be as Fig. 4 to shown in Figure 6, the level of eyeglass body acting surface 1 is to form a plane primary mirror portion 3 to long side section (Xo Xn) and vertical to wide side section (Yo Yn), by the Xn section of primary mirror portion 3 horizontal direction to XL, extend into side with gradual curved surface again and expand the portion 4 of looking, by the Yn section of primary mirror portion 3 vertical to YL, also be to extend into end expansion with gradual curved surface to look portion 5, with identical thickness Z n, make non-acting surface 2 identical and be parallel to the shape structure of acting surface 1, can finish one and can remove according to the eyeglass body of looking the dead angle and being easier to mold developing and making in batches.

The present invention utilizes the design of gradual curved surface to finish the eyeglass body, the eyeglass body of the gradual curved surface of this kind is same as sphere footpath eyeglass body anything but, in actual use, rearview mirror is applied to the vehicle right and left side, its volume size has restriction to a certain degree, and the eyeglass body can not have the too big apparent area that shines, if utilize the spherical mirror of certain R value curvature, can make and take the seeing image picture and produce significantly extrusion torsional deformation, be difficult for seeing clearly and the far and near distance of identification scenery.The eyeglass body of the gradual curved surface of the present invention be except that can expanding according to the angle, shine the image of looking and more do not have torsional deformation, image phenomenon such as wreck.

In sum, the present invention finishes one in integrally moulded mode to have and can expand according to angle and overcome driving according to the eyeglass body of automobile rearview mirror of looking the dead angle, really has its practicality, and has identical thickness between the acting surface of eyeglass body and non-acting surface, make the eyeglass body that presents gradual curved surface, not only comparatively simple and easy in the optical mould performance history, and more can not produce the phenomenon that causes the image distortion distortion because of the curvature drop, than commonly using product, the present invention obviously has novelty, creativeness, practicality.

Claims (2)

1, a kind of eyeglass body of automobile rearview mirror, it is characterized in that, the eyeglass body of this rearview mirror is the thickness Z n that is identical between acting surface and non-acting surface, the horizontal long side of aforementioned eyeglass body by Xo to XL section and vertical to wide side by Yo to YL section, it is to be that aspheric surface is finished primary mirror portion, side and expanded the portion of looking, the end and expand the portion of looking with gradual curved surface.

2, a kind of eyeglass body of automobile rearview mirror, it is characterized in that, the eyeglass body of this rearview mirror the level of acting surface to long side section (Xo Xn) and vertical in wide side section (Yo Yn) areal extent, it forms a plane primary mirror portion, by the horizontal direction of the Xn of primary mirror portion section to XL, more extend into side and expand the portion of looking with gradual curved surface, by the Yn section of primary mirror portion vertical to YL, also be to extend into end expansion with gradual curved surface to look portion, the eyeglass body of previous constructions, its non-acting surface is the shape structure that is entirely identical to acting surface, and makes the eyeglass body be identical thickness Z n between acting surface and non-acting surface.

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