CN87102567A - The glasses that focal length positive-negative is adjustable - Google Patents
The glasses that focal length positive-negative is adjustable Download PDFInfo
- Publication number
- CN87102567A CN87102567A CN 87102567 CN87102567A CN87102567A CN 87102567 A CN87102567 A CN 87102567A CN 87102567 CN87102567 CN 87102567 CN 87102567 A CN87102567 A CN 87102567A CN 87102567 A CN87102567 A CN 87102567A
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- Prior art keywords
- lens
- focusing
- piston
- pump
- glasses
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- 239000011521 glass Substances 0.000 title abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000000314 lubricant Substances 0.000 claims 1
- 230000004438 eyesight Effects 0.000 abstract description 7
- 230000004379 myopia Effects 0.000 abstract description 5
- 208000001491 myopia Diseases 0.000 abstract description 5
- 208000002177 Cataract Diseases 0.000 abstract description 4
- 206010020675 Hypermetropia Diseases 0.000 abstract description 4
- 230000004305 hyperopia Effects 0.000 abstract description 4
- 201000006318 hyperopia Diseases 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 2
- 210000000695 crystalline len Anatomy 0.000 description 49
- 239000000463 material Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001886 ciliary effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Eyeglasses (AREA)
Abstract
一种焦距正负连续可调的眼镜。它具有内有调焦液的弹性镜膜腔和调焦装置。通过改变镜膜腔形状或调焦液量来改变镜膜曲率，达到焦距正负可调的目的。近视、远视患者和白内障术者均可配戴，本发明具有矫正青少年视力、预防近视、延缓中年人视力老化的功能，还能起到人的体外晶状体的作用。
The invention relates to glasses with continuously adjustable positive and negative focal lengths. It has an elastic mirror cavity with focusing fluid and a focusing device. The curvature of the mirror film can be changed by changing the shape of the mirror film cavity or the amount of focusing liquid, so as to achieve the purpose of adjusting the positive and negative focal lengths. Both myopia and hyperopia patients and cataract operators can wear it. The invention has the functions of correcting the eyesight of teenagers, preventing myopia, and delaying the aging of eyesight of middle-aged people, and can also function as a human extracorporeal lens.
Description
The invention relates to a pair of glasses with continuously adjustable focal length.
People often need to wear myopia glasses, distance glasses, plano glasses or combined glasses with lower part, far part and upper part (or near part) to achieve the purposes of correcting vision and protecting eyes in work, study and life. Unfortunately, an eyeglass can only be worn by one person, and has strict requirements on the positive and negative power of the eyeglass, the power is not appropriate, and the eyeglass cannot see objects clearly and also injures vision.
The invention aims to overcome the defects mentioned above and provide the spectacles with continuously adjustable positive and negative focal lengths, so that the spectacles can be adjusted to the optimal working state conveniently and rapidly by the hands of a wearer. The invention is realized by the following modes: the lens is an elastic lens film cavity with focusing liquid inside. Furthermore, there is a focusing device. The focusing device can be a liquid charging and discharging type focusing device which can draw out or press in the focusing liquid from the lens film cavity. The curvature of the lens film is changed under the action of atmospheric pressure, and the lens film can be thinned or thickened to bulge or recess the lens film.
In order to make the curvature change appropriate, the lens film chamber preferably has two lens films with single convex lens-shaped opposite convex surfaces, which are fixed on a lens film fixing ring, and the fixing ring has a focusing liquid inlet and outlet hole and an air outlet hole, wherein the inlet and outlet hole can also be used as an air outlet hole. In order to ensure the strength of the mirror film and prevent cracks, a circle of buffer groove is arranged on the mirror film close to the fixing ring. The focusing device capable of being filled with liquid comprises a pump, a piston and a piston rod, and leak-proof lubricating liquid is arranged between a telescopic pump leak-proof cover and the piston. The piston and pump have a fluid-tight fit with sufficient friction therebetween to overcome the spring force of the mirror film. The focusing device is connected with the lens film cavity through the liquid inlet and outlet tube of the pump, the piston rod is connected with a handle, the piston can be pressed down by one hand or pulled out by two hands, or the focusing device is provided with two levers, the middle of the two levers is hinged by a shaft to form an X shape, one end of one lever is connected with the pump, the corresponding end of the other lever is connected with the piston rod, the focusing device can be arranged on the glasses frame, but is preferably fixed on the left and right glasses legs or at a proper position in front of the chest, so that the operation is convenient, the two glasses can be independently arranged, and can also be made into a public structure.
The lens film is made of optical plastic with good elasticity, strong toughness, high fatigue resistance and good anti-freezing performance. The coking liquid is made of material with high refractive index, small specific gravity, good fluidity, high volatilization point, low freezing point and no corrosiveness. The leak-proof cover is made of flexible materials. The piston and the pump should be made of wear-resistant, light and hard materials.
The invention has the following advantages:
the invention is suitable for all people suffering from myopia and hypermetropia with different degrees, in particular to the old people who suffer from hypermetropia and cataract, and because the crystalline lens of the old people is hardened or removed, the old people can not only see objects at the near position but also see objects at the far position even if wearing common glasses. Therefore, when the old people alternately watch objects at different distances, the old people need to take off the glasses and wear the glasses, which is very inconvenient, and the cataract patient needs to prepare a pair of glasses for watching the distance and the near, so that the old people can not watch the objects at the medium distance and the ultra-short distance.
If the invention is used by old people with hyperopia and cataract, the condition can be greatly improved, the problem that the glasses are frequently taken and exchanged is solved, objects at any distance can be seen clearly, and the vision of the old people is greatly improved by installing a pair of artificial in-vitro crystalline lenses on the glasses. In addition, the utility model has the function of preventing and correcting the vision of teenagers because the focal length is adjustable. The performance of the eye correction instrument is greatly superior to that of the popular SJ-1 type vision correction instrument developed by Shanghai modern information technology research institute, and the eye correction instrument can also play a role in delaying the visual aging of middle-aged people because ciliary muscles of a wearer can be exercised in the process of changing the degree of the glasses.
The following is further described with reference to the accompanying drawings and examples.
Fig. 1 is a front view of the lens, and fig. 2 is a plan view thereof.
Two lens membranes 1 which are in a single convex lens shape are bonded on a lens membrane fixing ring 2 through an adhesive, in order to prevent the lens membranes from being cracked when the lens membranes are deformed by pressure, a buffer groove 3 is arranged at a position close to the lens membrane fixing ring 2, the convex surfaces of the lens membranes are opposite and have a certain gap to form a lens membrane cavity 5 during bonding, a focusing liquid inlet and outlet pipe 4 is arranged on the fixing ring 2, and a liquid conveying pipe 8 is arranged on the pipe 4.
Fig. 3 is a front view of the charge and discharge type focusing device, and fig. 4 is a plan view thereof.
The pump 12 is provided with a piston 9 and a piston handle 16, the pump 12 is provided with a leak-proof rubber cover 13, leak-proof lubricating liquid 7 is arranged in the cover, the pump 12 is filled with focusing liquid 14, the piston and the pump are respectively fixed on levers 17 and 18 by screws 19 and 20, the lower side of the pump 12 is provided with a focusing liquid inlet and outlet pipe 10, and the pipe 10 is provided with a transfusion pipe 8.
Fig. 5 is an assembly view of the glasses with adjustable positive and negative focal lengths.
The two focusing devices are respectively fixed on the left and right temples of the spectacle frame 11 through nuts 6 and through-nails 15 shown in fig. 4, and the lens film cavity is communicated with the focusing devices through a perfusion tube 8.
Fig. 6, 7 and 8 are schematic views of the lens as a myopia lens, a plain lens and a presbyopic lens respectively.
The working process of the invention is as follows:
firstly, the lens cavities of two lenses and two pumps are filled with focusing liquid, and then the focusing liquid and the two pumps are connected by a liquid conveying pipe according to the sequence of a driving device, a lens and a driving device. At this time, there is no pressure in the lens film cavity, the outer surfaces of the two lens films are in a plane shape, the convex lens shape of the inner surfaces is counteracted by the focusing liquid, and the lens is in the condition shown in fig. 7, and is suitable for being a planoscopic lens.
When the heads of the levers 17 and 18 are manually pressed, the piston 9 descends to press the focusing liquid into the lens chamber 5, and the lens 1 is pressurized and expanded, so that the lens has a lenticular shape, as shown in fig. 8.
When the end of the levers 17, 18 are manually pressed, the piston 9 rises, the focusing fluid flows from the primary circuit back into the pump 12, the mirror membrane 1 contracts under atmospheric pressure, and the mirror becomes biconcave, as shown in fig. 6.
The continuous adjustment of the positive and negative degrees of the lens can be realized by the continuous action of hands.
The focusing device on the right side of the glasses of the invention is arranged for fixing the focal length of the glasses within a certain range. The addition of the focusing liquid in the right focusing device can enable the degree of the lens to approach to the negative direction, and otherwise, the lens approaches to the positive direction. The focusing device on the left temple is used for changing the positive and negative degrees of the lens within the range selected by the right focusing device. Since these operations are based on the best visibility of the wearer of the spectacles, no identification mark has to be added to the focusing device.
Fig. 9 is a schematic structural view of a thickness focusing apparatus.
The lens film cavity in the figure is composed of a single-sided convex lens film 1, a foldable film 21 and water 7 which are adhered together. The periphery of a mirror film is bonded with the movable mirror frame 22, the fixed mirror frame 24 is provided with a lens limiting ring 25, the mirror film cavity is prevented from expanding all around, the gap between the two mirror frames can be adjusted through the adjustable screw 23, the two lenses of the screw 23 are arranged together 6, and the purpose of adjusting the focal length of the lenses is achieved by adjusting the thickness of the lenses. The saline for the focusing liquid can also be other low-melting-point non-volatile transparent liquid, and the lens film is made of organic glass and the like.
Claims (6)
1. An eyeglass with a frame. It is characterized by comprising an elastic lens film cavity 5 with focusing liquid and a focusing device.
2. The spectacles as defined in claim 1, wherein the lens housing 5 has two single convex lens-shaped lens membranes 1 with opposite convex surfaces, which are fixed to a lens membrane holder 2 having focusing fluid inlet and outlet holes and air vent holes.
3. The eyeglasses according to claim 2, wherein said membrane 1 has a circumferential relief groove 3 adjacent to said retainer 2.
4. Spectacles as defined in claim 1, wherein the focusing means comprises a pump 12, a piston 9 and a piston rod 16, a leak-proof lubricant 7 is provided between a leak-proof cover 13 of the telescopic pump and the piston 9, a fluid-tight friction force is provided between the piston 9 and the pump sufficient to overcome the resilient engagement of the lens membrane 1, the piston rod is connected to a piston compression mechanism, and the focusing means is connected to the chamber of the lens membrane via a pump focus inlet/outlet tube 10 and a fluid line 8.
5. The eyeglasses according to claim 4, characterized in that said piston-compression-and-pull mechanism comprises two levers, hinged by a shaft in the middle, forming an X-shape, one of the levers being connected at one end to the pump 12 and the other lever being connected at the opposite end to the piston rod 16.
6. The eyeglasses according to claim 1, 2, 3, 4 or 5, wherein said focusing means are fixed to the left and right temples or are placed in position in front of the chest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102567 CN87102567A (en) | 1987-04-02 | 1987-04-02 | The glasses that focal length positive-negative is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102567 CN87102567A (en) | 1987-04-02 | 1987-04-02 | The glasses that focal length positive-negative is adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87102567A true CN87102567A (en) | 1988-01-06 |
Family
ID=4814030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102567 Pending CN87102567A (en) | 1987-04-02 | 1987-04-02 | The glasses that focal length positive-negative is adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87102567A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241201B (en) * | 1998-03-19 | 2012-07-18 | 约瑟华·戴维·西尔弗 | Improvements in variable focus optical devices |
| CN102636885A (en) * | 2011-02-14 | 2012-08-15 | 张晟廷 | Presbyopic and myopic dual-purpose spectacles with diaphragm regulation liquid |
-
1987
- 1987-04-02 CN CN 87102567 patent/CN87102567A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241201B (en) * | 1998-03-19 | 2012-07-18 | 约瑟华·戴维·西尔弗 | Improvements in variable focus optical devices |
| CN102636885A (en) * | 2011-02-14 | 2012-08-15 | 张晟廷 | Presbyopic and myopic dual-purpose spectacles with diaphragm regulation liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |