TWM595771U - A blind-free three-leaf vision len - Google Patents

Abstract

The device model relates to a blind-free three-leaf vision lens, wherein a circular lens with a surface which is divided into three regions by an upward arch and an upper arc, which are an upper leaf zone, a middle leaf zone and a lower leaf zone; The upper and lower leaves are fixed focus areas, the middle leaves are gradient zones, and the middle leaves contain the center of the lens; the effective area of the cut vision correction lens includes the above three areas. The utility model cleverly utilizes people's eye habits, whether it is nearsightedness or farsightedness, there are two most needed states of near vision and far vision, while the near and far visions adopt different luminosity numbers, and the gradation is smoothed by the luminosity gradation zone, and the vision is more for comfort, it satisfies the needs of myopia and hyperopia correction lenses; and it forms an arc shape that is upwardly arched, conforming to the eye habits of focusing near the range and wide vision, to reduce the visual deterioration caused by visual fatigue caused by correction. And slow down the progress of vision.

Description

Three-leaf vision control lens without blind area

The invention belongs to the field of vision correction lenses, and particularly relates to a tri-leaf vision control lens without blind areas.

Patent application No. 201521133615.8, discloses a core zoom lens, which has a core zoom area on one surface of the round lens, the diameter of the area is not more than 35mm, and there are more than 20 spherical rings with a gradual change of brightness in the core zoom area. The projection of the spherical ring has the same center of circle; the effective area of the cut vision correction lens contains more than half of the core zoom area. The structure is difficult to process and the core area gradually changes, resulting in severe parallax in the main viewing area. How to solve the problem of comfortable nearsightedness and farsightedness has become the goal pursued by the industry.

Patent application number 201620485691.3, which discloses an all-focus vision lens and an all-focus vision adjustment device, including a frame body and a strip on the frame body, the frame body includes a frame frame and a connecting piece connecting the frame; the frame is symmetrically mounted on the frame There are two vision control lenses, the two vision control lenses are concave lenses, the sheets are convex lenses, and the concave lenses are 360-degree all-focus vision lenses; the all-focus concave lens vision control lenses include a central optical region and a sub-central optical region 1. Side edge optical area and edge optical area; when one of the lenses is fixed, the adjustment device can be adjusted to achieve the fogging state, which can exercise the contraction of the ciliary muscle of the eye, drive the convexity of the lens to normal, and control the deepening of myopia. The new model prevents eyeball growth, and users can wear the new model for both work and study The effect of treatment is higher than that of single-focus and multi-focus lenses, which is a major update of vision correction.

The purpose of the present invention is to design a three-leaf vision control lens that divides three areas by an arc arched from two directions to form an upper and lower fixed focus area and a blind area in the middle.

The new technical solution is realized as follows: a blind-free three-leaf vision control lens, characterized in that the surface of a round lens is divided into three areas by the upper and lower arcs arched upward, which are the upper leaf area and the middle leaf respectively Area and lower leaf area; the upper and lower leaf areas are fixed focus areas, the middle leaf area is a gradual change area, and the middle leaf area contains the center of the lens; the effective area for cutting vision correction lenses includes the above three areas.

The center points of the upper arc line and the lower arc line both fall on the central axis of the circular lens, the distance between the center points of the two arc lines is not more than 22mm, and the distances between the two center points and the center of the lens are equal.

The photometric number of the upper leaf area is smaller than that of the lower leaf area, and the photometric number of the middle leaf area gradually increases from top to bottom. Suitable for processing into farsighted glasses.

The photometric number of the upper leaf area is greater than that of the lower leaf area, and the photometric number of the middle leaf area gradually decreases from top to bottom. Suitable for processing into myopia glasses.

The middle leaf area is processed with a gradient spherical ring no higher than twenty.

The other surface of the circular lens remains intact and concave.

The new type cleverly uses people's eye habits, whether it is myopia or hyperopia, there are two most needed states of nearsightedness and farsightedness, and nearsightedness and farsightedness use different luminosity. With the help of the gradual change of the photometric area, the vision is smoother and more visual Comfortable to meet the needs of corrective lenses for myopia and hyperopia; and it has an upwardly arched arc shape, which conforms to the eye habit of concentrated near-sighted range and wide visual field of farsightedness, so as to reduce the visual deterioration caused by visual fatigue caused by correction, and Slow down the progress of visual acuity.

1: round lens

2: Shangye District

3: Central area

4: Xiaye District

5: effective area

A: Center of lens

B: upper arc

C: Lower arc

D: bottom bracket

Figure 1 is a schematic diagram of orthographic projection of a three-leaf vision control lens without blind area.

Figure 2 is a schematic diagram of front projection and side projection of presbyopic lenses.

Figure 3 is a schematic diagram of front projection and side projection of myopic lenses.

Referring to Fig. 1, a blind lens tri-leaf vision control lens, its round lens (1) has a lens center (A), a surface is divided into three areas by the upper arc line (B) and the lower arc line (C) arched upward , Respectively, upper leaf area (2), middle leaf area (3), and lower leaf area (4); the upper and lower leaf areas (2), (4) are fixed focus areas, and the middle leaf area (3) is a gradual change area , The middle leaf area (3) is processed with a gradient spherical ring no higher than twenty, making it excessively natural and reducing the distortion of the object image; and the middle leaf area (3) contains the center of the lens (A); the effective area for cutting vision correction lenses (5) Containing the above three areas, the preferred solution is that the height of the effective area (5) on the central axis (D) of the lens is equivalent, that is, each takes up about one-third, so as to maintain the complete visual function of each zone. Moreover, when the glasses are cut, no matter presbyopia or myopia, the effective area (5) can retain the center area of the round lens (1), or keep the overlapping position of the pupil center and the lens center (A).

Further, the center points of the upper arc line (B) and the lower arc line (C) both fall on the central axis (D) of the circular lens, the distance between the center points of the two arc lines is not more than 22mm, and the distances between the two center points and the center of the lens circle are equal .

Referring to FIG. 2, for the application example of presbyopic lenses, the photometric number of the upper leaf area (2) is smaller than that of the lower leaf area (4), and the photometric number of the middle leaf area (3) gradually increases from top to bottom; and the upper leaf area ( 2) The luminous power can be zero, that is to say, the effective area of the lens after cutting (5) is the minimum correction or flat light area when the eye is raised, and the line of sight falls into the upper lobe area (2), which can be clearly seen Undistorted distant objects, and It has a wider left and right field of view; while the conversion process from hyperopia to nearsight, the corrected luminosity gradually becomes larger when passing through the middle lobe area (3), and the vision can be smooth and excessively less sudden; when the penetrating eye is near, the line of sight is exactly in the lower lobe area ( 4) The maximum correction can be achieved, and the fixed focus area can reduce the distortion of the object image that appears gradually, and it is consistent with the near vision and near vision, which meets the needs of hyperopia correction.

For example, the luminous power of the upper leaf area (2) is 0 to +300, and the luminous power of the lower leaf area (4) is +50 to +600, and the luminous power difference of the middle leaf area (3) is 50 to 300. Satisfy most correction needs.

Referring to FIG. 3, for an application example of myopia lenses, the luminous power of the upper lobe area (2) is greater than that of the lower lobe area (4), and the luminous power of the middle lobe area (3) gradually decreases from top to bottom; and the lower lobe area (4) ) The luminous power can be zero, that is to say, the effective area of the lens after cutting (5) can be used almost without correction to avoid eye fatigue when myopic eyes are near; but the conversion process from near to far vision corrects the luminous power It gradually becomes larger when passing through the middle lobe area (3), and when the eye is raised far away, the line of sight is exactly in the upper lobe area (2), which not only realizes the correction of the maximum luminosity, but also reduces the distortion of the object image that appears gradually, and the field of view is wider. Meet the needs of myopia correction eyes.

For example, the upper leaf area (2) has a luminosity of -100 to -900, the lower leaf area (4) has a luminosity of 0 to -600, and the middle leaf area (3) has a difference of 50 to 300 luminosity, which can meet most correction needs. .

Regardless of presbyopic lenses or myopic lenses, the smaller the difference in luminosity between the upper leaf area (2) and the lower leaf area (4), the smaller the number of gradient spherical rings in the middle leaf area (3), forming a uniform gradient gradient.

For middle-aged people with myopia, there may be situations where both myopia and hyperopia need to be corrected, and this solution can still be satisfied. As shown in Figure 2, the upper lobe area (2) can be designed to have negative luminosity, or Figure 3, lower and middle The leaf area (4) is designed with positive luminosity. In addition, the mid-leaf area (3) adopts a curved ring design, which complies with the central eye rule. The upper leaf area (2) meets the requirements of wide field of vision and far vision, and can observe objects in a large range beyond 200cm Like, with fixed focus decompression function; the middle leaf area (3) is responsible for the vision in the range of 50-200cm, which is in a relatively concentrated area, and the arc shape luminosity gradually decreases, greatly reducing the interference of the middle leaf area (3); and the lower leaf The area (4) is focused on close reading and writing and equipment operation within 50cm, so as to avoid disturbing the middle leaf area (3) gradually; this is also the biggest advantage of adopting an upward arched arc ring.

In addition, on the other surface of the circular lens (1), a complete concave curved surface is maintained to facilitate the processing of astigmatism lenses.

1: round lens

2: Shangye District

3: Central area

4: Xiaye District

5: effective area

A: Center of lens

B: upper arc

C: Lower arc

D: bottom bracket

Claims (6)

A three-leaf vision control lens without blind area, comprising: a surface of a circular lens is divided into three areas by an upper arc line and a lower arc line arched upward, which are an upper leaf area, a middle leaf area and a lower leaf area; The leaf area is a fixed focus area, the middle leaf area is a gradual change area, and the middle leaf area contains the center of the lens; the effective area for cutting vision correction lenses contains the above three areas. A three-leaf vision control lens without blind zone according to claim 1, wherein the center points of the upper and lower arcs fall on the central axis of the circular lens, the distance between the center points of the two arcs is not more than 22mm, and the two center points and the center of the lens The distance is equal. The three-leaf vision control lens without blind area according to claim 2, wherein the luminous power of the upper lobe is smaller than the luminous power of the lower lobe, and the luminous power of the middle lobe gradually increases from top to bottom. The three-leaf vision control lens without blind zone according to claim 2, wherein the luminous power of the upper lobe is greater than the luminous power of the lower lobe, and the luminosity of the middle lobe gradually decreases from top to bottom. A three-leaf vision control lens without blind areas according to claim 1, 2, 3 or 4, wherein the middle leaf area is processed with a gradient spherical ring no higher than twenty. A three-leaf vision control lens without blind zones according to claim 1, 2, 3 or 4, wherein the other surface of the circular lens remains intact concave curved surface.

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