TW201426087A - Wide viewing angle optical apparatus and wide viewing angle optical lens thereof - Google Patents

Abstract

A wide viewing angle optical apparatus is disclosed, wherein two wide viewing angle optical lenses are combined in left and right ends of goggles. Each of the wide viewing angle optical lenses is a cylinder being narrow in the front and wide in the back, and having outer and inner lateral surfaces. A first free form surface and a second free form surface for correcting aberration are respectively formed on the outer lateral surface and the inner lateral surface of each wide viewing angle optical lens, such that an optical path of an incident light projecting from an outer side and diagonal back of each wide viewing angle optical lens toward the first free form surface would pass through the second free form surface for being projected onto the pupil of a wide viewing angle optical apparatus wearer's eye. According to the abovementioned structure, the present invention can refract light so as to allow the wearer to see scenes in a wider angle, thereby achieving the object of safety with a wide viewing angle.

Description

Wide viewing angle optical device and wide viewing angle optical lens

The invention relates to a wide viewing angle optical device, in particular to a wide viewing angle optical lens of a wide viewing angle optical device.

Generally, the horizontal angle of view of the human eyes at the same time is about 120 degrees at the same time. If a wider angle of view is required, only one eye can be turned to the outside to extend the viewing angle of one side backward to a viewing angle of 14 degrees behind the eyes, but Such a viewing method will sacrifice the viewing angle of the other eye. Due to such ergonomic limitations, the human eye is only sensitive to the positive dynamics, and the side scene often cannot be correctly identified or even omitted, let alone the scene behind the ear. It is completely impossible to see.

The existing sports or safety glasses are only provided with goggles and lenses in front of the eyeball, and the lens is used to cover the eyes to achieve the function of protection. However, such a structure is not specially designed for increasing the viewing angle, so the side is worn after being worn. The scene still depends on people to watch with the light of the eyes or the way the head is turned.

In order to solve the aforementioned problems, there are glasses provided with rearview mirrors on both sides of the goggles, so that the wearer can observe the rear view by the reflection of the rearview mirror, but such a structure has a dead angle such as a side and a diagonal rear. It is still impossible to make effective observations, so it is still assisted by optical lenses to increase the viewing angle of human beings on the side and behind the ears. It can increase the wearer's safety requirements for image recognition and acuity for various wearing occasions. .

Since existing sports or safety glasses lack an optical structure with a wide viewing angle, there is a disadvantage in use that does not provide a better viewing effect for a viewing angle. For this reason, the present invention has a configuration of wide viewing angle optical lenses on both sides of the goggles. By the side design, the structure of the viewing angle can be increased, and the light can be refracted to see a wider angle of view to achieve a wide viewing angle.

In order to achieve the above object, the present invention provides a wide viewing angle optical device, comprising: a goggle, two wide field of view projection areas are formed directly behind the left and right halves of the goggles, and the positions of the two fields of view projection area correspond to the wide viewing angle optical device. The pupil position of the two eyeballs of the wearer; and the optical lens of the second wide angle view, each of which is coupled to the left and right ends of the goggles, and forms a correction aberration on the outer side and the inner side of each wide-angle optical lens, respectively. a free curved surface and a second free curved surface, such that the light incident from the outer side of each wide viewing angle optical lens and the obliquely rearward toward the first free curved surface passes through the second free curved surface and is projected on the same side as the wide viewing angle optical lens Wide field of view projection area.

Preferably, the first free curved surface and the second free curved surface of each wide viewing angle optical lens of the present invention are aspherical curved surfaces concavely from the surface of the wide viewing angle optical lens.

Preferably, the first free curved surface and the second free curved surface of each of the wide viewing angle optical lenses of the present invention are Fresnel lens surfaces formed on the surface of the wide viewing angle optical lens, respectively.

When the user wears the invention, the goggles are located in front of the two eyes, and the wide-angle optical lens can be used to refract the left and right sides of the wearer and the oblique light behind the two sides into the pupil of the wearer's eyes. Inside, let the wearer look ahead The viewing angle is extended from the original 120 degrees to the left and right to a viewing angle of about 200 degrees or even 200 degrees.

The utility model has the advantages that the wearer can not only protect the eyes with the goggles, but also expand the field of view on both sides by the wide-angle optical lens on the left and right sides, without rotating the eyeball or the head. Can see a wider angle of view, eliminating the blind spots that are not observed by the human side and the oblique rear, increasing the wearer's identification and acuity of images, and improving the safety requirements of the wearer's travel or movement. .

The invention provides a wide viewing angle optical device, which can be applied to safety protection of safety helmet goggles, goggles, sports glasses or vehicle devices. The first preferred embodiment shown in FIG. 1 is applied to safety helmet goggles. The form, its construction includes:

A goggle 10, which may be in the form of a goggle frame or a mirror surface, forms a wide field of view projection area 11 directly behind the left and right halves of the goggles 10, and the following description refers to " The front or the rear is the front or rear of the goggles 10 as the front or rear.

The second wide viewing angle optical lens 20 is a permeable transparent yoke disposed symmetrically left and right. Each wide viewing angle optical lens 20 is a front narrow and wide rear cylinder and is coupled to the visor 10 with a front end 23, such as a goggle frame or a mirror surface. At the left and right ends, a first free curved surface 21 is formed on the outer side of each of the wide viewing angle optical lenses 20, and the first free curved surface 21 is a concave aspherical curved surface, and is also on the inner side of each wide viewing angle optical lens 20. Forming a second free curved surface 22, which is a concave aspherical curved surface, each of the wide viewing angle optical lenses 20 The curvature of the first free curved surface 21 and the second free curved surface 22 can correct the aberration, so that the outer side of each wide viewing angle optical lens 20 and the light incident obliquely rearward toward the first free curved surface 21 pass through the second free curved surface 22, The wide field projection area 11 on the same side can be clearly projected.

When the user wears the present invention, as shown in FIG. 1 and FIG. 2, since the position of the two-field view projection area 11 is the pupil position corresponding to the wearer's two eyeballs, the wide-angle optical lens 20 can be worn by the wearer. The left and right sides and the oblique light behind the two sides are refracted into the pupils of both eyes of the wearer, so that the viewing angle of the wearer looking forward is extended from the original 120 degrees to the left and right to 200 degrees or even 200. Above the degree of viewing angle, the wearer can not only protect the eyes with the goggles 10, but also expand the field of view on both sides by the wide-angle optical lens 20 on the left and right sides, without rotating the eyeball or the head. Underneath, you can see a wider angle of view, increasing the wearer's security requirements for image recognition and acuity.

In addition to the first preferred embodiment of the present invention, the first free curved surface 21 and the second free curved surface 22 of the wide viewing angle optical lens 20 are set to be concave and aspherical curved surfaces, and the transparent transparent surface can also be widely used. The inner and outer side surfaces of the viewing angle optical lens 20 are configured as a type of lens, whereby the aberration of the image incident on the wide-field projection area 11 is corrected, as shown in the second preferred embodiment shown in FIGS. 3 and 4.

The second preferred embodiment of the present invention is also provided with a goggle 10, and two wide field of view projection areas 11 are formed directly behind the left and right halves of the goggles 10, and the two wide viewing angles are combined at the left and right ends of the goggles 10. The lens 20A; the second preferred embodiment is modified in comparison with the first preferred embodiment in that a first free curved surface 21A is formed on the outer side of each wide viewing angle optical lens 20A. The first free curved surface 21A is a Fresnel lens surface, and a second free curved surface 22A is formed on the inner side surface of each wide viewing angle optical lens 20A. The second free curved surface 22A is also a Fresnel lens surface. The curvature of the first free curved surface 21A and the second free curved surface 22A of each wide viewing angle optical lens 20A can correct the aberration, so that the outer side of each wide viewing angle optical lens 20A and the light incident obliquely rearward toward the first free curved surface 21A are worn. After passing through the second free-form surface 22A, the wide-field projection area 11 on the same side can be clearly projected. The aforementioned Fresnel lens surface can utilize the characteristics of the Fresnel microstructure to obtain a wide-angle optical lens. The 20A cylinder structure is thinned and maintains the same optical properties.

A third preferred embodiment of the present invention, as shown in FIG. 5, is an application mode in which the first preferred embodiment of the present invention is changed, and the configuration is applied to the glasses. In the third preferred embodiment of the present invention, the two-view optical lens 20 is provided with two mirror legs 30, and the two mirror legs 30 are respectively pivotally connected to the rear end 24 of each wide-view optical lens 20 by a front end. The rest of the configuration of the embodiment and the wearing effect that can be exerted are the same as those described in the first preferred embodiment, and thus the present invention is not described herein.

A fourth preferred embodiment of the present invention, as shown in Fig. 6, is an application mode in which the second preferred embodiment of the present invention is changed, and the configuration is applied to the glasses. In the fourth preferred embodiment of the present invention, the two-view optical lens 20A is provided with two mirror legs 30. The two mirror legs 30 are respectively pivotally connected to the rear end 24A of each wide-view optical lens 20A. The rest of the configuration of the embodiment and the wearing effect that can be exerted are the same as those described in the second preferred embodiment, and the present invention is not described herein.

10‧‧‧Goggles

11‧‧‧ Wide field projection area

20‧‧‧ Wide viewing angle optical lens

21‧‧‧First freeform surface

22‧‧‧Second freeform surface

23‧‧‧ front end

24‧‧‧ Backend

30‧‧‧Mirror feet

31‧‧‧ front end

20A‧‧‧ Wide viewing angle optical lens

21A‧‧‧First freeform surface

22A‧‧‧Second free surface

24A‧‧‧ backend

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top plan view of a first preferred embodiment of the present invention.

2 is a schematic view of an optical path of incident light rays in a first preferred embodiment of the present invention.

Figure 3 is a top plan view of a second preferred embodiment of the present invention.

4 is a schematic view of an optical path of incident light according to a second preferred embodiment of the present invention.

Figure 5 is a top plan view of a third preferred embodiment of the present invention.

Figure 6 is a top plan view of a fourth preferred embodiment of the present invention.

10‧‧‧Goggles

11‧‧‧ Wide field projection area

20‧‧‧ Wide viewing angle optical lens

21‧‧‧First freeform surface

22‧‧‧Second freeform surface

23‧‧‧ front end

Claims (9)

The invention relates to a wide viewing angle optical device, comprising: a goggle, a two-field projection area is formed directly behind the left and right halves of the goggle, and a position of the two-field projection area corresponds to a pupil position of the two-eye ball of the wide-angle optical device wearer; And a second wide viewing angle optical lens, each of which is coupled to the left and right ends of the goggles, and a first free curved surface and a second free surface respectively forming correcting aberrations on the outer side surface and the inner side surface of each wide viewing angle optical lens The curved surface is such that light rays incident from the outer side of each of the wide viewing angle optical lenses and the obliquely rearward toward the first free curved surface pass through the second free curved surface and are projected on the wide field of view projection area on the same side as the wide viewing angle optical lenses. The wide viewing angle optical device according to claim 1, wherein the first free curved surface and the second free curved surface of each of the wide viewing angle optical lenses are aspherical curved surfaces concave from a surface of the wide viewing angle optical lens, respectively. The wide viewing angle optical device according to claim 1, wherein the first free curved surface and the second free curved surface of each of the wide viewing angle optical lenses are respectively Fresnel lens faces formed on the surface of the wide viewing angle optical lens. The wide viewing angle optical device of claim 1, further comprising two mirror legs, each of which is pivotally connected at a rear end of each of the wide viewing angle optical lenses. The wide viewing angle optical device according to claim 1, wherein the two wide viewing angle optical lenses are arranged in a left and right symmetrical form, and each of the wide viewing angle optical lenses is a front narrow and wide rear cylindrical body. The wide viewing angle optical device of claim 1, wherein the wide viewing angle optical device is a safety protection for a safety helmet goggles, goggles, sports glasses, or a vehicle device. A wide viewing angle optical lens of a wide viewing angle optical device is a column that is transparent to light and has a front narrow and a wide width, and a first freedom for correcting aberrations is formed on the left and right sides of the wide viewing angle optical lens, respectively. The surface and a second freeform surface. The wide viewing angle optical lens of the wide viewing angle optical device of claim 7, wherein the first free curved surface and the second free curved surface are respectively concave aspherical surfaces from a surface of the wide viewing angle optical lens. The wide viewing angle optical lens of the wide viewing angle optical device of claim 7, wherein the first free curved surface and the second free curved surface are respectively Fresnel lens faces formed on a surface of the wide viewing angle optical lens.