CN203299468U - Lens device - Google Patents

Abstract

The utility model provides a lens device for a user to wear and for light rays to enter one eyeball of the user. The lens device comprises an optical area through which the light rays enter the optical area of the eyeball, and a marginal area surrounding the optical area, the marginal area comprises a plurality of radial extended prism sections, the radial extended prism sections are arranged on the outer surface of the lens device away from the eyeball, and each radial extended prism section is arranged from thin to thick clockwise or anti-clockwise, so as to enable the lens device to rotate, under the blink of the user, at a preset speed when being worn, and enable the optical area and the image formation position to rotate at a preset speed accordingly. Through the designation of the prism sections, the lens device rotates, under the blink of the user, at a preset speed when being worn, and the optical area rotates at a preset speed accordingly.

Description

Lens device

Technical field

The utility model relates to a kind of lens device, particularly relates to a kind of lens device of contact lenses.

Background technology

General contact lenses, smooth surface, however wear to eye and when nictation, action drove by eyelid, still unavoidably can uncontrolled rotation.Therefore, when some defects of vision for the treatment of need be used the eyeglass of aspheric surface symmetry, can use the contact lens with stablizing effect, for example in the thickening of eyeglass below, carry out counterweight.Yet, if when demand for make eyeglass with given pace more than rotation when obtaining specific effect, for example rotate the figure on the colored drawing contact lenses and produce special appearance effect, or demand that eyesight controls etc. is arranged, aforementioned existing eyeglass all can not meet this demand.Therefore, how to control the rotation of eyeglass, just becoming one is worth the theme of studying.

In addition, existing a kind of eyeglass for myopia control, comprise that the central optical zone and of a circle is around central optical zone peripheral Optical Region on every side, central optical zone and peripheral Optical Region have single curvature separately, wherein central optical zone is the person's of being used in conjunction with eyesight, with so that light clearly images on retina, peripheral Optical Region is to make image formation by rays in a preretinal picture point.Thus, can provide image clearly in visual field central authorities, the number of degrees due to peripheral visual field slightly have deficiency simultaneously, can delay or stop the situation of myopia development.

Each eyeglass that manufacturer makes, mainly being to provide different central optical zones selects according to its number of degrees to the user, to adopt the single curvature that reduces by default number of degrees than the number of degrees of central optical zone for peripheral Optical Region, so, in the situation that hypothesis people's eyeball is the body of rule, peripheral Optical Region makes the image formation by rays will be as estimated in expecting in preretinal picture point and amphiblestroid distance.Yet why, therefore the curvature selection of peripheral Optical Region can be a problem to the distance that present research it be unclear that aforesaid picture point and retina the best.In addition, people's eyeball and retina are not the body of absolute rule, and therefore aforesaid picture point and amphiblestroid distance actually might not be as in advance desired.Therefore, how the position of the imaging of peripheral Optical Region is designed and can be applicable to most people eyeball, reach the purpose that delays or stop myopia development of expection, just becoming another is worth the theme of research.

Summary of the invention

The purpose of this utility model is to provide a kind of lens device that can rotate more than given pace.

the utility model lens device, wear for a user, and supply light by entering this user's a eyeball, this lens device comprises one makes light by entering the Optical Region of this eyeball, this lens device also comprises a marginarium around this Optical Region, this marginarium comprise a plurality of this lens device one away from the prism section of radially extending on the outside surface of this eyeball, described prism section is all thick by being thinned in a clockwise direction, or all with counterclockwise thick by being thinned to, make this lens device rotate because of the action that the user blinks with predetermined speed when wearing.

Preferably, this lens device is a contact lens.

Preferably, this Optical Region comprises a central optical zone, with so that the image formation by rays by this central optical zone on this retina; This Optical Region also comprises:

The one peripheral Optical Region around this central optical zone, has the curvature section that multistage is connected, respectively this curvature section with so that the image formation by rays that passes through near this retina, the degree of crook of two adjacent curvature sections is different, and make the position of image formation by rays different from this amphiblestroid distance, and the position of described imaging all is positioned near this amphiblestroid the place ahead, or all is positioned near this amphiblestroid rear, and the position of this Optical Region and image formation by rays is with predetermined speed rotation.

Preferably, the intersection of described curvature section is discontinuous stepped or linking continuously.

Preferably, this central optical zone is low for the degree of crook of this periphery Optical Region.

The beneficial effects of the utility model are:, by the design of described prism section, make this lens device be subjected to rotate due to action that the user blinks with predetermined speed when wearing, and then make this Optical Region with predetermined speed rotation.

Description of drawings

Fig. 1 is a floor map, and the first preferred embodiment of the utility model lens device is described;

Fig. 2 is an elevational schematic view, and the prism section of this first preferred embodiment is described;

Fig. 3 is a floor map, and the second preferred embodiment of the utility model lens device is described; And

Fig. 4 is a light path schematic diagram, and this second preferred embodiment is described.

Embodiment

Below in conjunction with drawings and Examples, the utility model is elaborated.

Consult Fig. 1,2, the first preferred embodiment of the utility model lens device 2, wear for a user, and for light and by entering this user's a eyeball 3.This lens device 2 comprises an Optical Region 20 and a marginarium 23.This lens device 2 is a contact lens in the present embodiment.

This Optical Region 20 is main region of this lens device 2, makes light by entering this eyeball, is also in the enforcement aspect of colored drawing contact lenses, the main positions of graphic plotting.The non-emphasis of the present utility model of the mode of colored drawing contact lenses, but figure can stay in the dead ahead of pupil transparent part substantially, in order to avoid the excessive influence visual field.The pattern of colored drawing, can, from the color of Change Example such as iris in appearance, perhaps draw the spiral fashion figure and produce special visual effect.

This marginarium 23 is around this Optical Region 20, and comprise a plurality of this lens device 2 one away from the prism section 231 of radially extending on the outside surface of this eyeball 3, described prism section 231 is all thick by being thinned in a clockwise direction in the present embodiment, but not as limit, can be also all with counterclockwise thick by being thinned to, by difference in height distance, the gradient adjusted between thin and thick, make this lens device 2 rotate because of the action that the user blinks with predetermined speed when wearing, and then make the position of this Optical Region 20 and image formation by rays rotate with predetermined speed.Thus, the characteristic that can the coordinate Optical Region 20 for example figure on it produces special visual effect, perhaps coordinate Optical Region 20 other for the demand of controlling on eyesight, explanation after this part holds.

Consult Fig. 3 and Fig. 4, the second preferred embodiment and first embodiment of the utility model lens device 2 are roughly the same, its difference is in this Optical Region 20 and makes light by imaging near this retina 31 or this retina 31, and this Optical Region 20 comprises a central optical zone 21 and a peripheral Optical Region 22 around this central optical zone 21.

These central optical zone 21 use are so that the image formation by rays by this central optical zone 21 on this retina 31, and provides image clearly in visual field central authorities.

This periphery Optical Region 22 has the curvature section that multistage is connected, to have four curvature sections in the present embodiment, be respectively first curvature section 221, torsion section 222, the 3rd curvature section 223 and the 4th curvature section 224, but not as limit, can be also two, three, five and more than, or even 360 be curvature section of every degree.

Respectively this curvature section with so that the image formation by rays that passes through near this retina 31, the degree of crook of two adjacent curvature sections is different, and make the position of image formation by rays different from the distance of this retina 31, and in peripheral visual field, provide a plurality of images out of focus in various degree, the position that makes imaging near or the probability of position in the position with the retina optimum distance increase, and can be applicable to most people eyeball, reach the purpose that delays or stop the vision error heighten degree of expection.Coordinate again the rotation of the design control lens device 2 of prism section 231, avoid some part on retina 31 to continue, with the position of imaging, not good distance is arranged, and can be applicable to the eyeball 3 of most people, reach the purpose that delays or stop the vision error heighten degree of expection.

It should be noted that, the position of aforesaid image formation by rays is different from the distance of this retina 31, caused by the two different degree of crook of adjacent curvature section, because user's retina 31 is erratic body, in general, although this of the position of image formation by rays and this retina 31, apart from the more difficult prediction of meeting, still can increase the probability that the position of imaging is close or position occurs in this situation with the retina optimum distance.

What in Fig. 4, signal presented primary importance P1 that first curvature section 221 in the present embodiment makes image formation by rays and retina 31 makes the different apart from d3 of the 3rd position P3 of image formation by rays and retina 31 apart from d1 and the 3rd curvature section 223.In the present embodiment, the degree of crook of this four curvature section is all not identical, they but, not as limit, can be also for example that first curvature section 221 is identical with the 3rd curvature section 223, torsion section 222 is identical with the 4th curvature section 224, and first curvature section 221 be different from torsion section 222.

Need to prove, the utility model lens device 2 is feasible on making, as described in european patent number EP0872307, mainly to use the turning method to add the vibrations of fixing a cutting tool, its principle is to make the vibrations of cutter accurately to coordinate the rotation of the rotating shaft of lathe, therefore revolve in the process that turns around in rotating shaft, the degree of depth of cutter cutting can change according to the angle of rotation, and can produce nonaxisymmetrical eyeglass.

It is worth mentioning that, in the present embodiment, the position of described imaging all is positioned near the place ahead of this retina 31, or all is positioned near the rear of this retina 31.

More specifically, the degree of crook of this periphery Optical Region 22 or rectification number of degrees that provide are provided this central optical zone 21 is low, that is to say, during wish treatment myopia, user's image-forming range before being corrected is too short, and after putting on this lens device 2, light can be imaged on retina 31 after this central optical zone 21 is corrected, and light can image near the place ahead of this retina 31 after this periphery Optical Region 22 is corrected.On the contrary, during wish treatment long sight, user's image-forming range before being corrected is long, and after putting on this lens device 2, light can be imaged on retina 31 equally after central optical zone 21 is corrected, and light can image near these retina 31 rears after this periphery Optical Region 22 is corrected.

What remark additionally is, it is discontinuous stepped that the intersection of described curvature section can be, and can be also continuously, progressively be connected, and dual mode is all feasible, visual demand is used different designs, for example can select according to the restriction on making or the restriction of optic diameter size.

In sum,, by the design of described prism section 231, make this lens device 2 rotate because of the action that the user blinks with predetermined speed when wearing, and then make this Optical Region 20 with predetermined speed rotation; Make near the position of image formation by rays a plurality of different distance this retina 31 of passing through by this periphery Optical Region 22, the position that makes imaging near or the probability of position in the position with retina 31 optimum distances increase, coordinate again the rotation of lens device 2, avoid some part on retina 31 to continue, with the position of imaging, not good distance is arranged, therefore really can reach the purpose of the utility model.

As described above, it is only the preferred embodiment of the utility model, when not limiting with this scope of the utility model enforcement, the simple equivalence of namely generally according to the utility model claim and utility model description, being done changes and modifies, and all still belongs to the scope that the utility model is contained.

Claims (5)

1. lens device, wear for a user, and supply light by entering this user's a eyeball, this lens device comprises one makes light by entering the Optical Region of this eyeball, it is characterized in that: this lens device also comprises a marginarium around this Optical Region, this marginarium comprise a plurality of this lens device one away from the prism section of radially extending on the outside surface of this eyeball, described prism section is all thick by being thinned in a clockwise direction, or all with counterclockwise thick by being thinned to, make this lens device rotate because of the action that the user blinks with predetermined speed when wearing.

2. lens device according to claim 1, it is characterized in that: this lens device is a contact lens.

3. lens device according to claim 1 and 2, it is characterized in that: this Optical Region comprises a central optical zone, with so that the image formation by rays by this central optical zone on this retina; This Optical Region also comprises:

The one peripheral Optical Region around this central optical zone, has the curvature section that multistage is connected, respectively this curvature section with so that the image formation by rays that passes through near this retina, the degree of crook of two adjacent curvature sections is different, and make the position of image formation by rays different from this amphiblestroid distance, and the position of described imaging all is positioned near this amphiblestroid the place ahead, or all is positioned near this amphiblestroid rear, and the position of this Optical Region and image formation by rays is with predetermined speed rotation.

4. lens device according to claim 3 is characterized in that: the intersection of described curvature section is discontinuous stepped or be connected continuously.

5. lens device according to claim 3, it is characterized in that: the degree of crook of this periphery Optical Region this central optical zone is low.

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