TWI719425B - 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 visual control lens without blind spot

The invention belongs to the field of corrective vision lenses, and particularly relates to a blind zone-free trilobe vision control lens.

Patent Application No. 201521133615.8 discloses a core zoom lens. A core zoom area is provided on one surface of the circular lens. The diameter of the area is no more than 35mm. In the core zoom area, there are more than 20 spherical rings with gradual luminosity. The projection of the spherical ring has the same center; the effective area of the cut vision correction lens includes more than half of the core zoom area. This structure is difficult to process, and the core area is gradual, resulting in serious parallax in the main viewing area. How to solve the problem of comfortable near and far vision has become the goal pursued by the industry.

Patent application number 201620485691.3 discloses a full-focus vision lens and a full-focus vision adjustment device, including a frame and a strip on the frame, the frame includes a connecting piece for the frame and the frame; the frame is symmetrically installed There are two vision control lenses, the two vision control lenses are concave lenses, the lenses are convex lenses, and the concave lenses are 360-degree all-focus vision lenses; the full-focus concave lens vision control lenses include a central optical area and a sub-central optical area , Side edge optical area, edge optical area; when one of the lenses is fixed, the adjusting device can be mobilized to reach the foggy state, can train the eye ciliary muscle contraction, drive the lens convexity to normal, and control the deepening of myopia. The present invention prevents the eyeball from growing, and the user wearing the present invention can both work and study and enter The effect of treatment is higher than that of single-focus and multi-focal lenses. It is a major update in vision correction.

The purpose of the present invention is to design a three-leaf vision control lens with no blind zone, which is divided into three areas by two upwardly arched arcs to form upper and lower fixed focus areas and a middle transition area.

The technical solution of the present invention is realized as follows: a three-leaf vision control lens without blind zone, which is characterized in that: a surface of a circular lens is divided into three areas by an upwardly arched upper and lower arc, which are the upper lobe area and the middle lobe area. The upper and lower lobe areas are fixed-focus areas, the middle lobe area is a gradual change area, and the middle lobe area includes the center of the lens; the effective area of the cut vision correction lens includes the above three areas.

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

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

The luminosity of the upper leaf area is greater than the luminosity of the lower leaf area, and the luminosity 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 gradual spherical ring no higher than twenty.

The other surface of the circular lens maintains a complete concave curved surface.

The present invention cleverly utilizes people's eye habits. Whether it is nearsightedness or hyperopia, there are two most necessary states of nearsightedness and farsightedness, while near and farsightedness adopts different luminosity, with the help of luminosity gradient zone to smoothly transition, the vision is more It is comfortable and meets the needs of corrective lenses for myopia and hyperopia; and it is formed into an upward arch shape, which conforms to the eye habit of concentrated near vision and wide vision of far vision, so as to reduce the deterioration of vision caused by visual fatigue caused by correction, and Slow down the progress of vision improvement.

1: round lens

2: Upper leaf area

3: Mid-leaf area

4: Lower leaf area

5: Effective area

A: Lens center

B: upper arc

C: lower arc

D: bottom bracket

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

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

Figure 3 is a schematic diagram of the front projection and side projection of the myopia lens.

Referring to Figure 1, a three-leaf vision control lens with no blind zone, the circular lens (1) has a lens center (A), and a surface is divided into three regions by an upwardly arched upper arc (B) and a lower arc (C) , Respectively, the upper leaf area (2), the middle leaf area (3) and the lower leaf area (4); the upper and lower leaf areas (2), (4) are fixed-focus areas, and the middle leaf area (3) is the transition area , The middle lobe area (3) is processed with a gradual spherical ring with no more than twenty tracks to make it excessively natural and reduce the distortion of the object image; and the middle lobe area (3) contains the lens center (A); cutting the effective area of the vision correction lens (5) Containing the above three areas, the preferred solution is that the effective area (5) has the same height on the central axis (D) of the lens, that is, each occupies about one-third, so as to keep the visual function of each partition intact. Moreover, when the eyeglasses are cut with glasses, no matter presbyopia or myopia, the effective area (5) can retain the central area of the round lens (1), or keep the pupil center and the lens circle center (A) overlapped.

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 distance between the two center points and the center of the lens is equal .

Refer to Figure 2 for an application example of presbyopic lenses. The upper leaf area (2) has a lower luminosity than the lower leaf area (4), and the middle leaf area (3) gradually increases its luminosity from top to bottom; and the upper leaf area ( 2) The luminosity can be zero, that is to say, the effective area (5) of the cut lens is the smallest when the eyes are lifted to see the distance. In the corrected or flat light area, the line of sight falls into the upper lobe area (2), and the undistorted distant object image can be clearly seen, and it has a wider field of vision on the left and right; and the conversion process of hyperopia and near, the corrected luminosity passes through the middle lobe area (3 ) Gradually becomes larger, the vision can be smooth and excessively less abrupt; to the near vision, the line of sight is just in the lower lobe area (4), which can achieve the maximum correction, and the fixed focus area can reduce the gradual distortion of the object image, and It is consistent with the concentration of near-sightedness, and meets the needs of corrective eyes for hyperopia.

For example, the luminosity of the upper leaf area (2) is from o to +300, while the luminosity of the lower leaf area (4) is from +50 to +600, and the middle leaf area (3) has a luminosity difference of 50 to 300, forming a gradual transition. Meet most of the correction needs.

Refer to Figure 3, which is an application example of myopia lenses, the upper lobe area (2) has a higher luminosity than the lower lobe area (4), and the middle lobe area (3) gradually decreases from top to bottom; and the lower lobe area (4) ) The optical power can be zero, that is to say, the effective area (5) of the cut lens can hardly be corrected when the eye is near-sighted, so as to avoid eye fatigue for myopia; and the conversion process of myopia-to-distance corrects the optical power. It gradually enlarges when passing through the middle lobe area (3), and when the eyes are lifted to see far, the line of sight is just in the upper lobe area (2), which not only achieves the maximum luminosity correction, but also reduces the gradual distortion of the object image, and the field of view is wider. Meet the needs of myopia correction eye.

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

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

For middle-aged people with myopia, there may be cases where correction is needed for both near vision and distance vision. This solution can still be satisfied. The upper lobe area (2) of Figure 2 can be designed to have a negative luminosity, or the bottom of Figure 3 The leaf area (4) is designed to have a positive luminosity. In addition, the middle leaf area (3) adopts an arc-shaped ring design, which is in line with the central use The rules of the eye. The upper lobe area (2) satisfies the requirements of a wide field of vision and can observe a wide range of objects beyond 200cm, and has the function of fixed focus and decompression; the middle lobe area (3) is responsible for the visual objects in the range of 50-200cm and is relatively concentrated. Area, and the arc-shaped luminosity gradually decreases, which greatly reduces the interference in the middle lobe area (3); while the lower lobe area (4) is the line of sight focusing on close reading and writing and equipment operations within 50cm, so as to avoid interference to the middle lobe due to gradual progress. Zone (3); this is also the biggest advantage of using an upward arched ring.

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

1: round lens

2: Upper leaf area

3: Mid-leaf area

4: Lower leaf area

5: Effective area

A: Lens center

B: upper arc

C: lower arc

D: bottom bracket

Claims (6)

A three-leaf vision control lens with no blind zone, comprising: a circular lens with one surface divided into three areas by an upwardly arched upper arc and a lower arc, which are respectively an upper lobe area, a middle lobe area and a lower lobe area; The upper lobe area and the lower lobe area are fixed focal areas, the middle lobe area is a gradual zone, and the middle lobe area includes a lens center; the effective area of the cut vision correction lens includes the above three areas, wherein the The middle leaf area is processed with a gradual spherical ring no higher than twenty. The blind-zone-free three-leaf vision control lens according to claim 1, wherein the center points of the upper arc and the lower arc both fall on the central axis of the circular lens, and the distance between the center points of the two arcs is not more than 22mm, and The distance between the center points of the two arcs and the center of the lens is equal. The blind-zone-free three-leaf vision control lens according to claim 2, wherein the luminosity of the upper lobe area is smaller than the luminosity of the lower lobe area, and the luminosity of the middle lobe area gradually increases from top to bottom. The blind-zone-free three-leaf vision control lens according to claim 2, wherein the luminosity of the upper lobe region is greater than the luminosity of the lower lobe region, and the luminosity of the middle lobe region gradually decreases from top to bottom. According to claim 1, 2, 3, or 4, the blind-zone-free tri-lobe vision control lens, wherein the number of the progressive spherical ring is twenty. According to claim 1, 2, 3, or 4, the blind-zone-free tri-lobe vision control lens, wherein the other surface of the circular lens maintains a complete concave curve.

Images