WO2007041904A1

WO2007041904A1 - Small viewing field lens

Info

Publication number: WO2007041904A1
Application number: PCT/CN2005/002297
Authority: WO
Inventors: Dengke Zhang
Original assignee: Dengke Zhang
Priority date: 2005-10-09
Filing date: 2005-12-23
Publication date: 2007-04-19
Also published as: CN1743901A

Abstract

A small viewing field lens is divided into a central visible area and a surrounding area, the dioptre of the central visible area is the normal dioptre obtained by optometry. The surrounding area includes a dioptre transition area and a surrounding blurring area, and visibility of a wearer is decreased by dioptre off-set, dioptre continuous variation, impurity addition and the like in the surrounding area. The central visible area is disposed at the center of the small viewing field lens, the surrounding blurring area is disposed at the periphery of the small viewing field lens, and the dioptre transition area is disposed at the area between the central visible area and the surrounding blurring area.

Description

Small field lens

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an ophthalmic lens technology, and more particularly to a lens that utilizes a refractive index of a lens or a radius of curvature of an inner and outer surface or a region in which an impurity is used to divide a region. Background technique

Social anxiety disorder is already a very common mental illness. At present, social anxiety disorder can be divided into psychological therapy and drug therapy. However, psychotherapy is only guided, and its role cannot be ascertained; the effect of drug therapy can only last for a while, and the cost is quite high. Many patients have been unable to get rid of problems for a long time, and social activities are severely restricted.

The existing progressive multifocal glasses divide the spectacle lens into upper and lower parts for viewing far and near, and this design is not and cannot be used to alleviate the condition of patients with social anxiety. Summary of the invention

The technical problem solved by the invention is to provide a small-field lens, so that a person suffering from social anxiety can effectively relieve the tension without affecting the vision, and can be cured as soon as possible by other means, and can also be overcome by the average person. Fear of the psychology of public speech. The technical solution of the present invention is as follows:

A small-field lens is divided into a central clear zone and a surrounding zone, and the central clear zone has a normal degree of diopter.

The peripheral zone includes a diopter transition zone and a peripheral blur zone, the diopter of the diopter transition zone being between the diopter of the central clear zone and the diopter of the surrounding blur zone. The central clear zone is disposed at a center of the small field lens, and the diopter transition zone is disposed at a periphery of the central clear zone. The central clear area is disposed at a center of the small-view lens, and the peripheral blurred area is disposed at a periphery of the small-view lens, and the diopter is The crossing area is disposed in an area between the central clear area and the surrounding blurred area. The change in diopter is achieved by a change in the radius of curvature of the inner and outer surfaces of the small field lens. The change in diopter is achieved by a change in the refractive index of the small field of view lens material. The surrounding area is made of a material to which impurities are added. 00D。 The absolute value of the difference between the highest value of the diopter and the minimum value is at least 3. 00D.

The beneficial effects of the present invention are as follows:

The surrounding area uses diopter deviation, rapid change of diopter, and impurities to reduce the visual clarity of the wearer. Therefore, if all or part of the central clear area is guaranteed to be in the effective field of view of the human eye, it can be reduced. An effective vision of the human eye. It should be noted that for non-contact mirrors, the entire lens is generally in the effective field of view of the human eye. For the contact lens, only the portion of the pupil area is within the effective field of view of the human eye. When the surrounding area adopts the diopter deviation method, the continuous change of the radius of curvature of the inner and outer surfaces of the lens or the refractive index of the lens material achieves a natural transition of diopter. Since the central part degree is consistent with the wearer's optometry or the difference is small, it can be normal and can ensure the normal operation of most social activities. Although the surrounding area can not be seen clearly, it can distinguish large objects and moving objects to ensure a certain vision. Sensitivity. In addition, the surrounding area can also reduce its light transmittance or transparency by adding impurities, and it is also possible to reduce the effective field of view while ensuring a certain visual sensitivity.

It can help users to complete their current social activities happily without psychological struggle or medication. Long-term use not only has no psychological burden, but also helps them establish a good mental order, confidently face life, and finally get rid of trouble.

DRAWINGS

Figure 1 is a lens division diagram of the present invention; Figure 2 is a longitudinal sectional view of the present invention;

Figure 3 is a diagram of a diopter function of one and two preferred embodiments of the present invention;

Figure 4 is a diagram of a three diopter function of a preferred embodiment of the present invention;

Figure 5 is a sharpness function diagram;

Figure 6 is an eye imaging schematic diagram;

Figure 7 is a diagram of a five diopter function of a preferred embodiment of the invention.

Detailed ways

Because people with social anxiety are afraid to face the crowd, the most direct way is to reduce their effective vision and ease tension. A straightforward way to reduce the wearer's effective field of view is to see a blurred image through the surrounding area, which can be achieved in a number of ways. If the surrounding area adopts a non-flat surface, the diopter of the surrounding area deviates greatly, the diopter of the surrounding area changes rapidly, and impurities are added to the surrounding area. Each method must consider both the blur effect and the appearance.

According to the principle of glasses imaging, when the degree of spectacle lens and the degree of optometry of the human eye are quite different, when the eye is outside the adjustment range of the blurred focus of the human eye and the object distance is fixed, the human eye cannot see the scene in front, and the difference between the degrees is larger. The more blurred the scene is. Therefore, if the center of the lens adopts a normal degree and a degree of deviation is used in the periphery, the effective field of view of the human eye can be reduced. The degree used should be greater than the progressive addition of the progressive multifocal lens for the wearer. The transition between the center and the periphery can achieve a natural transition by a continuous change in the radius of curvature of the inner and outer surfaces of the lens or the refractive index of the lens material. It should be noted that on the one hand, the transition part is deviated due to the degree, and on the other hand, the visual focus is blurred due to the continuous change of the focus. Although the surrounding fuzzy area can not be seen clearly, it can distinguish large objects and moving objects to ensure a certain visual sensitivity. When the patient's field of view is reduced to a smaller area, Can effectively eliminate their nervousness. At the same time, since the central part degree is consistent with the wearer's optometry or the difference is small, it can be normal and can ensure the normal operation of most social activities.

Both the refractive index of the material and the change in the radius of curvature of the lens surface can change the diopter of the lens, so that different parts of the lens can be partitioned by changing the refractive index of the lens material and the radius of curvature of the lens surface. The shape and the shape of the lens can be selected from different shapes, but it is necessary to divide the lens into different areas according to the change of diopter, the transmittance of the lens or the change of transparency. The division of the lens is not necessarily divided from the inside out. In theory, as long as there are clear areas and blurred areas at the same time.

The spectacle lens is divided into a contact lens and a non-contact lens. The contact lens generally refers to an eye lens that is in contact with the cornea, that is, a so-called contact lens; the non-contact lens generally refers to a frame lens, and the present invention can be applied to a contact lens and a non-contact lens. The principles of the embodiments of the present invention can be applied to both contact lenses and non-contact mirrors.

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in Figures 1 and 2, a preferred embodiment of the invention employs a circular lens that is divided into three regions, radius r, by three concentric circles. Clear area represents the central area 1, area represents the radius of the transition region represented by 2 diopters, zone 3 blur radius r ₂ represents the surrounding area.

One of the preferred embodiments of the present invention

In a preferred embodiment of the present invention, the central clear area 1 is a flat mirror, and the peripheral blurred area 3 is a convex lens. Therefore, the central clear area 1 is selected to have a diopter of 0, and the peripheral blurred area 3 has a diopter based on the central clear area 1 diopter. When a larger degree is added, the absolute value of the difference in the diopter of the central clear zone 1 and the surrounding blurred zone 3 is preferably 3D or more. Refractive The diopter of the crossing area 2 is between the central clear area 1 and the ambiguity of the surrounding blurred area 3, and continuously changes to achieve a natural transition.

One of the preferred embodiments will now be described in detail with reference to Figure 3, a diopter function diagram of one of the preferred embodiments of the present invention, and a clarity function diagram of Figure 5.

In Fig. 3, the abscissa is represented by the lens radius r, which represents the radius of the preferred embodiment; and the vertical axis is represented by the function f(r), which represents the refracting power. The function curve above the horizontal axis indicates that the diopter is greater than or equal to zero, the central clear zone 1, the radius is r _Q , the flat mirror is used, that is, the diopter is zero; the radius of the surrounding blur zone 3 is r ₂ , the convex lens is selected, and the diopter is greater than zero. A value; the radius of the diopter transition zone 2 is _Γι , and the diopter is between the central clear zone 1 and the ambiguity of the surrounding blur zone 3, and continuously changes to achieve a natural transition.

As shown in the sharpness function diagram of Fig. 5, the abscissa is represented by a radius r, which represents the radius of the preferred embodiment, and the ordinate is represented by V(r), which represents sharpness. When r is in the central clear zone 1, the maximum sharpness can be obtained; in the diopter transition zone 2, the sharpness of the change is obtained, and the sharpness changes from the maximum to a small value; when r is obtained in the surrounding blurred zone 3, a smaller The clarity.

The patient wearing the present invention can clearly see the target object through the central clear zone 1, while in the diopter transition zone 2, the surrounding blurred zone 3 sees an image that becomes increasingly blurred, so the effective field of view becomes smaller. The psychological tension of patients with social anxiety disorder is alleviated.

Preferred Embodiment 2 of the present invention

In a preferred embodiment of the invention, a flat mirror is used for the central clear zone 1 and a concave lens is used for the peripheral blur zone 3.

The central clear area 1 of the present invention selects a diopter of 0, and the diopter of the surrounding blurred area 3 is selected to be reduced by a large degree on the basis of the diopter of the central clear area 1, the central clear area. 00D以上。 Preferably, the absolute value of the difference between the diopter of the surrounding and the ambiguous region 3 is preferably 3. 00D or more. The diopter of the diopter transition zone 1 is between the central clear zone 1 and the ambiguity of the surrounding blur zone 3, and continuously changes to achieve a natural transition.

A preferred embodiment of the present invention will be described in detail with reference to Fig. 3, a first and second diopter function diagram, and a clarification function diagram of Fig. 5.

3 is a diagram showing a diopter function diagram of a preferred embodiment of the present invention, the abscissa is represented by r and represents the radius of the preferred embodiment; and the vertical axis is represented by a function f(r) representing diopter. The function curve below the horizontal axis indicates that the diopter is less than or equal to zero, and the radius of the central clear zone 1 is r. The flat mirror is used, that is, the diopter is zero; the area around the blur zone 3 is larger than less than r ₂ , the concave lens is selected, and the diopter is a value less than zero; the region of the diopter transition zone 2 is taken as ^ - r. The value between the diopter is between the central clear zone 1 and the ambiguity of the surrounding blur zone 3, and changes continuously to achieve a natural transition.

As shown in the sharpness function diagram of Fig. 5, the abscissa is denoted by r, representing the radius of the preferred embodiment, and the ordinate is represented by V(r), representing the sharpness. When r is in the central clear zone 1, the maximum sharpness is obtained; when r is in r, -r. The area between the diopter transition zone 2, in which the sharpness of the change is obtained, the sharpness changes from maximum to a small value; when r takes r ₂ - r, the value between them is blurred around Zone 3, getting a smaller definition in this area.

Note: The preferred embodiment 1 and 2 both assume that the wearer's optometry is 0D, that is, no correction is needed. The third preferred embodiment of the present invention

The third preferred embodiment will be described in detail with reference to the sharpness function diagram of Fig. 5 and the three diopter function diagram of the preferred embodiment of the present invention.

In the preferred embodiment of the present invention, the partitioning is also performed according to FIG. 1. The surrounding blurred area 3 is a convex lens, the central clear area 1 is a concave lens, and the inner and outer curvature radii of the diopter transition area 2 are continuously changed to realize the diopter in the central clear area 1 and the surrounding blurred area. A continuous transition between 3. Thus, the concave lens of the central clear zone 1 corrects the visual acuity when the wearer sees the number of the forces in correspondence with the degree of the foveal lens. The diopter transition zone 2 and the surrounding blur zone 3 are blurred vision regions, which can reduce the effective visual field and alleviate the psychological stress of patients with social anxiety.

Light entering through the central clear zone 1 is imaged on the retina, and the surrounding portion of the scene is not imaged on the retina.

As shown in the three diopter function diagram of the preferred embodiment of the present invention, the abscissa indicates the radius of the present invention, and the ordinate indicates the diopter. At r in r. When the diopter is less than zero, it means that the central clear zone 1 adopts a concave lens; when r is in the region between r ₂ - ^, the diopter is greater than zero, indicating that the surrounding blur zone 3 is a convex lens; when r is in the region between ^ - ^ , indicating that the diopter transition zone 2 has a diopter between the central clear zone 1 and the surrounding blur zone 3.

As shown in the sharpness function diagram of Fig. 5, the abscissa is denoted by r, representing the radius of the preferred embodiment, and the ordinate is represented by V(r), representing the sharpness. r gets the maximum sharpness in the central clear zone 1; when r is changed in the diopter transition zone 2, the clarity is clear The degree changes from the maximum to a smaller value; when r gets a smaller sharpness in the surrounding blur zone 3.

The fourth preferred embodiment of the present invention

The above embodiment has been described with reference to FIG. 3, a diopter function diagram of one of the preferred embodiments of the present invention, a third diopter function diagram of the preferred embodiment of the present invention, and a sharpness function diagram of FIG. The imaging schematic is described in detail with respect to the preferred embodiment.

In the preferred embodiment, the central clear area 1 is a concave lens, and the peripheral blurred area 3 is a convex lens. Central clear area 1 Select the best optometry of the patient, the degree of the selected blurring area 3 is greater than the best optometry, and the diopter of the surrounding blurred area 3 is greater than the diopter of the central clear area 1. More than 00D is appropriate.

As shown in the eye imaging schematic of Fig. 6, if the central diopter takes the patient's optimal diopter, the diopter transition zone 2, the surrounding blurred zone 3 is larger than the optimal diopter, and thus can be divided into the transition imaging zone 61 in the human eyeball. The clear imaging area 62 and the blurred imaging area 63 are three imaging areas. The clear imaging area 62 represents a partial area of the retina, the light from the central clear area 1 forms an image in this area, allowing the person to see the sharpest image; the transition imaging area 61 represents the area closer to the retina, from the diopter transition zone 1 The incoming image is imaged in this area, the image in the area makes the person look slightly blurred; the blurred imaging area 63 represents the area farther from the retina, and the image from the surrounding blurred area 3 is imaged in the area, the image in the area Make people look blurry and only see the outline of the object. The patient wearing the present invention can clearly see the target object through the central clear zone 1, while in the diopter transition zone 2, the surrounding blurred zone 3 sees an image that becomes increasingly blurred, so the effective field of view becomes smaller. The psychological tension of patients with social anxiety disorder is alleviated.

When the central clear area of the non-contact lens is different from the lens type of the surrounding blur area, a combination of glasses may be employed, that is, the wearer simultaneously wears a pair of ordinary contact lenses and a copy of the non-contact lens of the invention. For example, when the central clear area is a concave lens and the surrounding blurred area is a convex lens, the contact lens degree can be positive (non-gradient), and the entire non-contact mirror degree is negative (gradual change). This is equivalent to subtracting a fixed positive value from each region of the non-contact mirror lens, so that the lens power is generally negative.

Five of preferred embodiments of the present invention

The preferred embodiment will be described in detail below with reference to Figure 5, a fifth diopter function diagram of the preferred embodiment of the present invention, and a clarity function diagram of Figure 5.

The change in the diopter of the surrounding area is selected to be a non-monotonic change. In the preferred embodiment, the diopter changes according to a sinusoidal law. Referring to Figure 7, a fifth diopter function diagram of a preferred embodiment of the present invention, the abscissa is represented by r and represents the radius of the preferred embodiment; the vertical axis is represented by a function f(r) representing diopter. The function curve below the horizontal axis indicates that the diopter is less than or equal to zero, and the radius of the central clear zone 1 is r. Use a concave lens; the surrounding area is greater than r. The area, the diopter of the surrounding area changes in a manner similar to the sinusoidal wave, and the change in diopter lasts for at least 1/4 cycle. Of course, the diopter of the surrounding area can also be changed according to other laws such as triangular waves.

As shown in the sharpness function diagram of Fig. 5, the abscissa is denoted by r, representing the radius of the preferred embodiment, and the ordinate is represented by V(r), representing the sharpness. The value of r in the central clear zone 1 is at O - r. Between, the maximum sharpness can be obtained in the area; in the surrounding area, The value of r is -r, and the sharpness of the image is continuously changed due to the rapid change of the diopter, so the sharpness of the image is low in this region. In this case, the ambiguous elements include the amplitude of the diopter change and the frequency of change. In this case, a certain change frequency is ensured, and the change range is greater than 1. 00D, that is, the difference between the absolute values of the diopter in the lens is at least 1. 00D. .

The patient wearing the present invention can clearly see the target object through the central clear zone, while a blurred image is seen in the surrounding area, so that the effective visual field becomes smaller, and the psychological tension of the social anxiety patients is alleviated.

Sixth preferred embodiment of the invention

It is also possible to partition the lens by adding impurities in different regions of the lens, so that the transmittance or transparency of different regions of the lens is different, and the lens is segmented.

In the sixth embodiment of the preferred embodiment, referring to FIG. 1, the diopter of the central clear zone 1 is a normal degree, and this part does not add impurities; the surrounding area can reduce the transmittance of the portion by adding the impurities of the hook or by adding Non-uniform impurities to reduce the transparency of this part. Wherein, adding uniform colored impurities is equivalent to dyeing the lens, which can reduce the transmittance of the portion, that is, reduce the imaged brightness of the light passing through the region, and the effect is higher when the degree of dyeing is high; adding non-uniform impurities On the one hand, it can reduce the light transmittance of this part, on the other hand, it will cause light to scatter, reduce the transparency, and blur the image formed by the light in the area.

In the preferred embodiment, the central clear zone 1 has the highest light transmittance and transparency, so that the user can see the clearest target object in this region; the transmittance or transparency of the diopter transition zone 2 and the surrounding blur zone 3 Compared with the central clear zone 1, the sharpness of the object seen by the user is lower than that of the clear zone 1, and the purpose of narrowing the field of view is achieved. When a uniform impurity is added to the surrounding area to reduce the visible light transmittance, only the brightness of the image is changed, and the image is not deformed. If the contact lens is selected, the diameter of the central clear zone 1 is less than 3 mm, and the visible light transmittance of the unit area of the diopter transition zone 2 and the surrounding blurred zone should be less than 1/3 of the central clear zone. When the method of reducing the transparency of the surrounding area by adding non-uniform impurities is used, the entire lens can be kept substantially colorless by selecting a suitable material.

The patient wearing the present invention can clearly see the target object through the central clear zone 1, and in the diopter transition zone 2, the surrounding blur zone 3 sees an image that becomes increasingly blurred, so the effective field of view becomes smaller. , the psychological tension of patients with social anxiety disorder is alleviated.

In the above embodiments, the size of the central clear zone 1 and the diopter transition zone 2, the blurriness of the surrounding blur zone 3 should be determined according to the specific conditions of the wearer (patient) mental state. In general, when the wearer's social anxiety level is high, it should be equipped with a lens with a clearer central 1 area, a diopter transition zone 2, and a blurred area around the lens. With the relief of the social anxiety of the wearer, the area of the central clear area 1 can be gradually increased, and the blurring of the blurred area can be reduced until it is the same as ordinary glasses.

Claims

Rights request

A small-field lens, characterized in that the small-field lens is divided into a central clear area and a surrounding area, and the central clear area has a normal degree of diopter.

2. The small field lens of claim 1, wherein the peripheral region comprises a diopter transition zone and a peripheral blur zone, the diopter of the diopter transition zone being diopter in the central clear zone and surrounding blur zone Between diopter.

The small-field lens according to claim 1, wherein the central clear area is disposed at a center of the small-view lens, and the peripheral area is disposed at a periphery of the central clear area.

The small field lens according to claim 2, wherein the central clear area is disposed at a center of the small field lens, and the peripheral blurred area is disposed at a periphery of the small field lens, the diopter A transition zone is provided in an area between the central clear zone and the surrounding blur zone.

The small-field lens according to any one of claims 1 to 4, wherein the change in diopter is achieved by a change in a radius of curvature of an inner surface and an outer surface of the small-field lens.

The small-field lens according to any one of claims 1 to 4, wherein the change in diopter is achieved by a change in refractive index of the small-field lens material.

The small-field lens according to any one of claims 1 to 2, wherein the peripheral region is made of a material to which impurities are added.

00D。 The absolute value of the difference between the highest value of the diopter and the lowest value is at least 3. 00D.

The small field lens according to claim 5, wherein the central clear area and the surrounding blurred area are concave lenses.

The small-field lens according to claim 5, wherein the central clear area adopts a concave lens, and the surrounding blurred area uses a convex lens.

The small-field lens according to claim 1, wherein the diopter of the surrounding area changes according to a sine wave or a triangular wave law.

The small field lens according to claim 11, wherein the change in the diopter of the peripheral region is at least 1/4 cycle.

The small-field lens according to claim 11, wherein the diopter of the peripheral region has a variation amplitude of at least 1.00D.

14. The small field lens of claim 11, wherein the ambiguity of imaging of the surrounding area is achieved by a magnitude or frequency of change in diopter.