TW202036103A - A type of non blind spot trivision lens - Google Patents

Abstract

This patent is about a three section myopia controlling lens without blind spot. There are two horizontal curves separating the sections into upper section, middle sectio and lower section. Upper and lower section are normal single vision lenses; middle section is progressive lens. The middle section also contains the lens center. All three sections are effective vision correcting. This patent accommodates both the human eye behaviors of looking near and looking far, satisfying both needs accordingly. The lens take on different powers for looking near and looking far, fully utilising the progressive section to make the transition of looking far and near more smooth. The convex curvature is also the right model for both concentration of near vision and wide angel far vision. All above properties will lessen the fatigue arising from vision correction and thus decrease the rate of myopia and hyperopia progression.

Description

Three-leaf visual control lens without blind spot

The utility model belongs to the field of corrective vision lenses, in particular to a three-leaf vision control lens without blind spots.

Patent Application No. 705200072 discloses a core zoom lens. A core zoom area is provided on one surface of the circular lens. The diameter of the area is not more than 35mm. In the core zoom area, there are more than 20 spherical rings with gradual gradation and plural spherical surfaces. The projection of the ring has the same center; the effective area of the cut vision correction lens contains 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 comfortable near and far vision problems 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, comprising 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, which can exercise the eye ciliary muscle contraction, drive the lens convexity to normal, and control the deepening of myopia. The utility model prevents the eyeball from growing, and the user can perform work and study as well as treatment when the user wears the utility model. The effect is higher than that of single-focus and multi-focus lenses, and it is a major update of vision correction.

The purpose of the utility model is to design a three-leaf vision control lens which is divided into three areas by two upwardly arched arcs to form upper and lower fixed focus areas, and a middle gradual change area.

The technical scheme of the utility model is realized as follows: a three-leaf vision control lens without blind area, 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 respectively the upper lobe area, The middle lobe area and the lower 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 lens center; 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 utility model cleverly utilizes people's eye habits. Whether it is nearsightedness or hyperopia, there are two most necessary states of near vision and distance vision. The near vision and distance vision use different luminosity, and the luminosity gradient area is smoothed and the vision is more For comfort, it satisfies the needs of corrective lenses for myopia and hyperopia; and it is in an upwardly arched shape, which conforms to the eye habit of concentrated near vision and wide vision of far vision, so as to reduce vision deterioration caused by visual fatigue caused by correction. And slow down the progress of vision improvement.

1: round lens

2: Upper leaf area

3: Middle leaf area

4: Lower leaf area

5: Effective area

A: Lens center

B: upper arc

C: lower arc

D: Central axis

The following is a further explanation of the utility model in combination with specific illustrations:

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 front projection and side projection of presbyopic lenses

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

among them

Referring to Figure 1, a three-leaf vision control lens without blind zone, its circular lens 1 has a lens center A, and a surface is divided into three regions by an upwardly arched upper arc line B and a lower arc line C, namely the upper lobe 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 a gradual change area. The middle leaf area 3 is processed with a gradual spherical ring no higher than twenty times to make it Excessively natural, reducing object image distortion; and the middle lobe area 3 includes the lens center A; the effective area 5 of the cut vision correction lens includes the above three areas, and 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 to keep the visual function of each partition intact. Moreover, when the eyeglasses are cut with glasses, regardless of presbyopia or myopia, the effective area 5 can retain the central area of the circular lens 1, or keep the pupil center and the lens center A overlapping.

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 22 mm, 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 luminosity of the upper lobe area 2 is smaller than that of the lower lobe area 4, and the luminosity of the middle lobe area 3 gradually increases from top to bottom; and the luminosity of the upper lobe area 2 can be zero. In other words, the effective area 5 of the cut lens is the minimum correction or flat light area when the eyes are lifted to see the distance. The line of sight falls into the upper lobe area 2, and the image of the distant object can be clearly seen without distortion, and it has a wider left and right. From the conversion process of hyperopia to near, the correction luminosity gradually increases when passing through the middle lobe area 3, and the vision can be smooth and excessively less abrupt. When the vision is near the lower lobe area, the line of sight is just in the lower lobe area 4, which can achieve the maximum correction. The fixed focus area can reduce the gradual distortion of the object image, and it is consistent with the concentration of the near vision, which meets the needs of the correction of the hyperopia.

For example, the luminosity of the upper lobe area 2 is 0 to +300, and the luminosity of the lower lobe area 4 is +50 to +600, and the middle lobe area 3 has a luminosity difference of 50 to 300, which forms a gradual transition, which can meet most of the correction needs.

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

For example, the luminosity of the upper lobe area 2 is -100 to -900, and the luminosity of the lower lobe area 4 is 0 to -600. Controlling the middle lobe area 3 to have a luminosity difference of 50 to 300 can meet most correction needs.

Regardless of presbyopia lenses or myopia lenses, the smaller the difference in luminosity between the upper lobe area 2 and the lower lobe area 4, the less 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 required for both near vision and distance vision. This solution can still be satisfied. As shown in Figure 2, the upper lobe area 2 can be designed with negative luminosity, or the lower lobe area in Figure 3 4 Designed to be positive brightness. In addition, the middle leaf area 3 adopts an arc-shaped ring design, which conforms to the central eye rule. The upper lobe area 2 meets the requirements of a wide field of vision and can observe a wide range of objects beyond 200cm, and has a fixed focus and decompression function; the middle lobe area 3 is responsible for viewing objects in the range of 50-200cm, located in a relatively concentrated area, and arc The luminosity of the shape gradually decreases, which greatly reduces the interference to the middle lobe area 3; while the lower lobe area 4 is focused on reading and writing and equipment operations within 50cm to avoid interference to the middle lobe area 3. This is also an upward arch The biggest advantage of arcing 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.

Claims (6)

A three-leaf vision control lens without blind zone, characterized in that: a surface of a round lens is 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 lower lobe area is the fixed focus area, the middle lobe area is the gradual change area, and the middle lobe area contains the center of the lens; the effective area of the cut vision correction lens includes the above three areas. 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, the center point of the two arcs is not more than 22mm apart, and the two center points The distance from the center of the lens is equal. The three-leaf vision control lens without blind spots according to claim 2, wherein the luminosity of the upper lobe area is smaller than that of the lower lobe area, and the luminosity of the middle lobe area gradually increases from top to bottom. The three-leaf vision control lens without blind spots according to claim 2, wherein the optical power of the upper lobe area is greater than the optical power of the lower lobe area, and the optical power of the middle lobe area gradually decreases from top to bottom. According to claim 1, 2, 3 or 4, a three-leaf vision control lens without blind area, characterized in that: the middle lobe area is processed with a gradual spherical ring no higher than twenty. According to claim 1, 2, 3 or 4, a three-leaf vision control lens without blind spots, wherein the other surface of the circular lens maintains a complete concave curve.

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