CN103907047A

CN103907047A - Adjustable spectacles

Info

Publication number: CN103907047A
Application number: CN201280054051.1A
Authority: CN
Inventors: R.科克; G.德兹瓦特
Original assignee: Sas SELF ADJUSTABLE SPECTACLES BV
Current assignee: Sas SELF ADJUSTABLE SPECTACLES BV
Priority date: 2011-11-03
Filing date: 2012-11-05
Publication date: 2014-07-02
Anticipated expiration: 2032-11-05
Also published as: GB201118986D0; JP2014532900A; KR20140084332A; WO2013064679A3; GB2498171A; GB2509456A; GB2509456B; CN103907047B; JP6038943B2; GB201406869D0; WO2013064679A2

Abstract

A pair of spectacles (1) is provided with a frame (2) and a pair of combined lenses (66) carried by the frame. Each combined lens has an adjustable focal length and comprises two lens elements (66A, 66B) arranged one behind the other along an optical axis of the combined lens. An adjustment mechanism is arranged to move the two lens elements laterally relative to one another to vary the focal length whereby each lens element is movable in a direction opposite to the other lens element and transverse to the optical axis. In this manner the optical axis remains substantially fixed relative to the frame. The adjustment mechanism comprises at least one frame-connected rotatable element engaging at least one lens element and, when in use, urges a lateral movement of the at least one lens element, and a lever (62) for transferring the lateral movement of one lens element of the combined lens to a lateral movement of the other lens element in the opposite direction.

Description

Adjustable cheater

Technical field

The present invention relates in general to eyewear art.Particularly, the present invention relates to glasses, a pair of combined lens that it is provided with framework and is configured to have adjustable focal length.

Background technology

Glasses, are also called mirror or eyepiece, and normally framework is loaded with the form of eyeglass.Although other design is also known, eyes are worn before eyes and are supported on nose and on ear.Glasses are generally used for vision correction, eye protection or for preventing UV light.

Ametropia (refractive error) (as myopia, long sight or astigmatism) of eyes can be alleviated by corrective lens, and corrective lens changes effective focal length.Eyeglass according to its characteristic (as, thickness, convexity/concavity) limit specific focal length.For the patient's of correction of refractive errors eyesight and for it provides suitable eyeglass, oculist or eye Shi Bixu open the number of degrees of eyeglass according to every eyes of each patient.

More in the world as the position in underdeveloped region and poorer region does not have suitable equipment and/or technician provides its needed service for having the resident of visual problem.Estimate that this relates to worldwide several hundred million people.Make efforts to correct these people's visual problems, for example, by the low cost glasses of a series of focal lengths are provided.Although the glasses of this fixed focal length can be manufactured dirt-cheap, but be difficult to the logistics of the distribution of remote areas, so be difficult to guarantee that each one can finally receive the glasses for the abundant rectification of eyes.

The principle that changes the refracting power of two component combination eyeglasses by the lens component that relatively moves is known in the prior art.US3,617,116 and US3,507,565 disclose combined lens, and it is configured to arrange to obtain expectation sphere or the cylinder number of degrees within the scope of wider predetermined number of degrees with respect along optical axis before and after each other.These file instructions are in the time that the refracting power of expection is determined, these two lens elements can be by being fixedly secured as gluedd joint.

According to this principle, the possibility of affordable vision correction is to provide to adjustable cheater cheaply.Can produce in large quantities and provide this low cost adjustable cheater.Follow that unbred wearer can oneself arranges correct focal length for every eyes by moving lens chip part, thereby do not need housebroken oculist or optist.WO2006/098618 discloses a kind of glasses, and it is provided with combined lens, and wherein wearer can focus by the mechanism that eyeglass is moved past to another.By two lens elements are moved to same distance, the optical axis of eyeglass remains on same position with respect to frame.The mechanism of the disclosure requires with being forever connected, at least one cam member and at least one eyeglass to be interacted with the direct of groove of eyeglass by recess.This file discloses a mechanism, and it relative to each other moves lens element, but the design of mechanism does not provide the popular or design separately that the glasses of wearing are shown.This mechanism or large and significant in eyeglass design, makes it be easier to allow impurity or particle enter or around mechanism and opening thereof, and certain area in blockage mechanism or around.This will seriously hinder the work of mechanism, and therefore affects the function of glasses.This governor motion does not provide the adjusting more accurately of the focal length to glasses yet, only has manually and directly regulates.The present invention and embodiment thereof provide the one or more scheme in aforesaid drawbacks that solves.

Summary of the invention

According to the present invention, a pair of glasses are disclosed, it is provided with framework and a pair of combined lens being carried by framework, each combined lens has adjustable focal length and comprises two lens elements, this lens element is configured to one in front and one in back arrange along the optical axis of combined lens, and governor motion, it is configured to two lens elements relative to each other laterally mobile to change focal length, each lens element can be contrary with another lens element and move transverse to the direction of the optical axis of lens element, substantially fixing with respect to framework thereby optical axis keeps.This governor motion comprises that at least one framework connects rotatable element, and it engages at least one lens element for promoting the transverse shifting of at least one lens element.

This governor motion also comprises at least one control lever, and it is connected in the framework of described glasses pivotly, for converting the transverse shifting of a lens element of combined lens to another lens element transverse shifting in the opposite direction.Control lever can be connected to the outward flange of each lens element of combined lens.In the time rotating rotatable element, one in lens element is moved in a lateral direction, and its bar being connected to is about its pivot rotation, makes in the opposite direction transverse shifting of another lens element.If each lens element is correctly shaped, this will cause optical axis to remain on identical relative position with respect to framework.Move two lens elements by opposite directions, regulated the focal length of combined lens.

This rotatable element is preferably circular, for example, be substantially configured as wheel, wherein the edge of wheel and the edge join of at least one lens element.The medial axis of rotatable element can be connected to the framework of glasses to allow rotation.The edge of wheel can engage with the outward flange of spectacles element by the friction between surface in contact.The mode that friction realizes can be different, and for example level and smooth or rough surface contacts with each other to produce enough frictions, thereby in the time that rotatable element is rotated, causes the transverse shifting of lens element.This rotatable element can comprise gear, itself and the edge join of at least one lens element with respective teeth.Can also be other rotatable element, as the sliding members engaging with lens element at its outward flange.

Rotatable element can comprise at least Part I and Part II, and wherein Part I engages with lens element, and Part II has adjusting part, regulates adjacent for manual adjustments combined lens one in the edge of part and framework.Part II regulates eyeglass for rotating rotatable element by hand.Part I is for being passed to lens element by the rotation of rotatable element.By changing the diameter of two parts, can change the degree of regulation of eyeglass.For example, when the diameter of the Part I engaging with lens element than the diameter of the Part II for being saved by hand adjustment more hour, the less transverse shifting of lens element will be caused by the larger rotation of rotatable element.This makes it easily realize the fine adjustment of eyeglass.

Rotatable element is preferably surrounded at least in part by the framework of glasses.This rotatable element is preferably arranged in framework, thereby visually cannot see this rotatable element in the time seeing glasses from front.The outward appearance that this has improved glasses, has reduced its chance moving unintentionally in the time not intending to regulate glasses, and protection mechanism is avoided dust and moisture infringement.This rotatable element is preferably and is configured such that at least 75% of rotatable element is hidden in framework.The feather edge that can be set up framework for the rotatable element of each combined lens is in combined lens below.Governor motion is arranged on the position that it can be regulated easily by this, for example by thumb rotate in rotatable element one or two with regulate combined lens.

This control lever preferably therein the heart about the point of fixity pivotable in framework, and be connected to two lens elements with its each end adjacent.In this configuration, in the time regulating, two eyeglasses of each combined lens can in the opposite direction move identical amount.This disposes the adjusting that helps the focal length of realizing eyeglass, the focal axis of eyeglass is remained on to the fixed position with respect to framework simultaneously.

At least one pin (stud) is arranged in the frame of at least two eyeglasses, for supporting and guide the transverse shifting of lens element.The pin that this is little or beam can extend in substantially vertical with the plane of eyeglass, parallel with optical axis direction.This pin does not stop the transverse shifting of lens element, but can aid in guide transverse shifting and the support structure to glasses is provided.

Spectacles element can have flat surfaces, and it faces with each other with syntople.In the past, in adjustable focal length eyeglass, known each eyeglass has flat surfaces and curved surface, and wherein curved surface is configured to face with each other.In this configuration, carry out the in fact clearance of the shape-variable between two eyeglasses of eyeglass of selectivity refraction.Configuration of the present disclosure is set together the flat surfaces of eyeglass, thereby the selective refraction of light mainly occurs in two outside surfaces.In adjustment process, flat surfaces can slide over each other.In the embodiment about the first embodiment of the present invention, lens element can be isolated by liquid or gel mould, preferably high viscosity liquid or gel, as, silicone oil or silicon gel.The closed interval of eyeglass believes that preventing that dust and particle from entering between eyeglass be favourable.This high viscosity liquid contributes to the composition surface between lubricated lens element, and provides stick-slip effect the position of lens element is kept fixedly prevent the adjusting that is not intended to of eyeglass.Liquid also contributes to prevent that dust from entering between lens element, and can be selected the change to reduce refractive index during by lens element and gap therebetween at light, and improves the light transmission between lens element.

One or more guide rail can be provided, and it links together two lens elements guide its transverse shifting.By being provided as the guide rail of part of combined lens, can realize improved guide structure, it can be independent of the shape of framework.In addition, before inserting framework, eyeglass can more easily combine, and can more be firmly held in together as a unit.Particularly, guide rail can move and can jointly move with one or two of lens element with respect to framework.In this context, guide rail is tending towards comprising the structure for guide in the horizontal another lens element with respect to a lens element.Conventionally, guide rail is straight, but does not get rid of guide rail bending or with angle.Guide rail at least partly can be by a carrying in lens element, and can there is channel cross-section, it receives (one or more) complementary projection carrying on another lens element.This complementary projection can also be the form of the track that mates with passage.Alternatively, projection can be the driven member (follower) of the form of one or more bolts or the suitable dimension that guided by passage.

This guide rail can form connect and connect lens element as linking.In this case, guide rail is arranged on the passage on first mirror piece element, and it can have C shape section, and this C shape section is connected with mushroom shaped projection or track on another element with snap fit arrangement.The molded those skilled in the art of plastics should understand realize this buckle or card coordinate desired must shape and tolerance.Therefore lens element being combined can be relatively simple.Should understand the alternate embodiment connecing as linking, can be by driven member being laterally moved on guide rail and by two lens element combinations.This connected mode can be used for dove tail formula embodiment.

The use of this guide rail allow its can with lens element at least one form.If eyeglass and track are made by casting process, this will be very simple.In the past, eyeglass is formed and is accurately ground to form intended shape by glass.Modern adjustable focal length eyeglass can be made and have enough accuracy with a fraction of cost by injection moulding.Preferred material for this technique is polycarbonate, and it will be understood by those skilled in the art that equivalent material and advantage thereof.

Can provide and be arranged at least two guide rails adjacent with the upper and lower edge of eyeglass.This track is configured to parallel to each other and guarantees all to have improved guiding and also kept better eyeglass.Top and bottom guide rail is identical.Alternatively, in track one can be used for guiding and another is additionally provided for Connection Element, as connect by as above linking.

In order to regulate the focal length of each combined lens, this governor motion can be included at least one movable actuator of framework outside.Movable actuator can grasp by user, and mobile until realize the focal length of expecting.Preferably, the mode that actuator is prevented from entering of dust and impurity and through framework, as pass through seal.Actuator can be less obvious, and it is not in use seen, and it is not easy by disturbance, and this disturbance meeting is upset and focused on.Alternatively, actuator can be configured to remove after initial setting up, makes then focal length be fixed and can not be continued to regulate.

In a form of governor motion, a bar is provided, Qi center is about the point of fixity pivotable on framework, and holds separately adjacent to be connected to two lens elements at it.This bar can then rotate to cause two lens elements relatively moving in opposite lateral about its pivot.If each lens element correctly forms, this will cause optical axis to remain on the identical relative position with respect to framework.Although movable actuator can be arranged in any position of eyeglass linkage, but the optimum position of actuator is the one end at bar.Therefore, this is can be by framework protruding and can be provided with handle or the handle for manual activation.

This governor motion can preferably stop by stopping configuration, to prevent the change unintentionally to lens position.This allows lens element can be arranged on selected position, and guarantees that it remains on this position.This stops that configuration can comprise the interlocking tooth being positioned on framework, is preferably located on its inside surface.This locking teeth can interact with other tooth being positioned on governor motion.Technician will understand, although with reference to multiple teeth, but can provide at least one interaction element, single tooth.This stops that configuration also comprises spring loading element, and it is configured to engage and separate with interlockable teeth.This spring loading element is preferably arranged on governor motion.

The invention is not restricted to its different embodiment, but the some or all of features of each embodiment can be combined in any way to improve other notable feature of function, profile or glasses.

Accompanying drawing explanation

With reference to the accompanying drawing that shows embodiments of the present invention, the features and advantages of the present invention will be significantly, wherein:

Fig. 1 is the skeleton view of a pair of glasses with movable actuator of first embodiment of the invention;

Fig. 2 is the plan view of the combined lens of the glasses of Fig. 1;

Fig. 3 is the cut-open view along line 3-3 of the combined lens of Fig. 2;

Fig. 4 is the skeleton view of a combined lens in the eyeglass of Fig. 1;

Fig. 5-7th, the cut-open view of the glasses of Fig. 1, shows the operation of combined lens;

Fig. 8 is the plan view of the part of the framework of Fig. 1;

Fig. 9 is the skeleton view of a pair of glasses with rotatable element second embodiment of the invention;

Figure 10 is the cut-open view of the half of the glasses of Fig. 9, shows rotatable element and control lever;

Figure 11 is the skeleton view more specifically of the control lever that is connected with two lens elements;

Figure 12 is the cut-open view of rotatable element, show with different-diameter be connected and with more details that are connected of lens element;

Figure 13 is the cut-open view of the glasses of Fig. 9, shows the interaction of two rotatable element and combined lens.

Embodiment

Subsequently be the explanation about some embodiments of the present invention, it is with reference to accompanying drawing and only as example.With reference to figure 1, show a pair of glasses 1 of first embodiment of the invention.Glasses 1 comprise framework 2, and it is included in hinge 6 places and is pivotally connected in a conventional manner the arm 4 of this framework 2.This framework 2 is loaded with eyeglass 8A and the 8B of combination.Eyeglass 8A, the 8B of combination are adjustable focal lengths, as hereinafter by explanation.Focus by the movable actuator 10A, the 10B that are positioned on the coboundary of framework 2.In order to understand better, shown actuator is larger, but it will be understood by those skilled in the art that in actual applications, so can be much smaller size because it seldom uses it.In addition, although shown actuator in framework 2 outsides, actuator can be positioned at framework 2, and can activate by suitable instrument.The eyeglass of this combination has optical axis 12A, 12B.As described hereinafter, in the adjustment process of focal length, the relative position of optical axis 12A and 12B keeps substantially constant.This is important, due to for proofread and correct vision, optical axis should with wearer's eye center between distance substantially align.

Fig. 2 shows the plan view of the possible embodiment of the combined lens 8A of Fig. 1.This eyeglass comprises two

lens elements

14,16, and it was arranged to one before another.Each

spectacles element

14,16 has gradient surface (graduated surface) 18 and flat surfaces 20.This flat surfaces 20 abuts each other with face-to-face relation.The film 22 of high viscosity liquid can be used between two lens elements.This liquid contributes to the composition surface between lubricated lens element and provides adhesion sliding effect to fix with the position that keeps lens element, avoids little shock to cause that the unexpected of eyeglass regulates.This liquid also contributes to prevent that dust from entering between lens element, and reduces the effect of the change of refractive index while being used in light by lens element and gap therebetween, and improves the light transmission between lens element.The governor motion 24 that comprises bar 40 and pivot 42 is connected to

lens element

14,16 by lug (lug) 44,46.As below will further illustrated, the displacement of governor motion 24 makes lens element 14 move at direction X, and lens element 16 moves same distance at direction Y, and vice versa.The eyeglass 8A of combination also can be made up of the lens element of the curved surface with face-to-face relation, rather than flat surfaces, or the lens element that all has gradient surface by two surfaces is made.

Fig. 3 is that wherein eyeglass comprises induction element along the sectional elevation that passes through combined lens 8A of the line 3-3 of Fig. 2.As shown in the figure, in this embodiment, this lens element 16 has the guiding channel 28 adjacent with the coboundary 30 of eyeglass 8A.This guiding channel 28 receives the coupling projection 32 on lens element 14.The xsect of this guiding channel 28 is C shapes, and projection 32 has the shape of mushroom slightly.Passage 28 and projection 32 are extended on the basic transverse width completely of

lens element

14,16 and as guide rail separately at it.In addition,, due to C shape xsect, guiding channel 28 is also as

lens element

14 and 16 is kept together.Adjacent with the lower limb 34 of combined lens 8A, two lens elements are all provided with and engage guide rail 36,38.Guide rail the 36, the 38th, the xsect of part dove tail shape and extending in whole length of eyeglass.It will be understood by those skilled in the art that, as long as realize enough guiding functions, there is no need to extend on whole width for each track, passage or projection, C shape and dove tail shape induction element can together with or use separately, maybe can use the induction element of other shape or type, or induction element can omit completely, particularly in the time that framework 2 is enough to carry out guiding function.

Fig. 4 shows the skeleton view of combined lens 8A, wherein shows the interaction between guiding channel 28, projection 30 and

guide rail

36,38, and shows governor motion 24.As shown in the figure, governor motion comprises bar 40, and it has the pivot 42 that approaches its center.Be provided with actuator 10B in the top of bar 40.Lug 44 is positioned at the top of bar 40, and is connected to lens element 14.Another lug 46 (part is blocked) is positioned at the lower end of bar 40 and is connected to lens element 16.

Lug

44,46 can be connected to lens element by the familiar different modes of those skilled in the art.Most preferably, this connection is to allow counterrotating pin to be connected with hole.This pin can be molded integratedly with lens element, and lug can slightly be recessed in lens element to reduce required space in framework 2.

Enter the operation of an explanation governor motion 24 with reference to Fig. 5-7.According to Fig. 5, wherein show Fig. 4 combined lens 8B observing with user's view directions.Eyeglass 8B is installed in framework 2, and framework 2 is partly cut to expose governor motion 24.Pivot 42 is installed on the pin 50 being arranged in framework 2.This pin 50 can be molded integratedly with framework 2, or can be independent parts, as, for the metallic pin of plastic frame.This pin 50 allows bar 40 in pivot 42 places rotation.Shown guiding channel 28 and

track

36,38 are adjacent with upper and

lower edge

30,34 respectively.According to the position of Fig. 5, actuator 10B mediates (neutral position) and bar 40 is substantially vertical.This can corresponding have the setting of-3 dioptric lens elements.

In Fig. 6, actuator 10B is moved into right side, and bar 40 is turned clockwise about pin 50.Lug 44 promotes lens element 14 towards the right.Lug 46 pulls lens element 16 towards the left side with identical amount.This makes the diopter of combined lens 8B be increased to the value of maximum-6.

In Fig. 7, actuator 10B is moved towards the left side along contrary direction.This rotates in a counter-clockwise direction bar 40.In this case, lug 44 pulls lens element 14 towards the left side, and lug 46 promotes lens element 16 towards the right with identical amount.This makes the diopter of combined lens 8B be decreased to approximately-0.5 value.Carry out in a similar manner the adjusting to combined lens 8A.

Fig. 8 shows the top view of a part for framework 2, and wherein actuator 10B is removed.The top of bar 40 is divided via groove 52 projections through framework 2.Groove 52 is provided with optional interlocking tooth (interlocking teeth) 54 and is provided with flexible seals 56 along opposite side along one side.This bar 40 also can be provided with multiple teeth 58.In use, the side that bar 40 is pressed against groove 52 by flexible seals makes tooth 58 engage with interlocking tooth 54.Once engage,

tooth

54,58 prevents the unwanted movement of regulating device.In order to regulate the focal length of combined lens 8B, must be at the pressure of the direction opposing seal 56 of arrow Z and mobile detent 10B.The seal 56 also helps to keep groove 52 closures, prevents that impurity from entering framework 2 inside.

Fig. 9 shows a pair of glasses 1 second embodiment of the invention.Glasses 1 comprise framework 2, and it has the arm 4 that is pivotally connected in a usual manner this framework 2 at hinge 6 places.Framework 2 is loaded with combined lens 65A and the 65B of adjustable focal length.This can be according to the first embodiment, and consist of the some or all of features shown in above-mentioned and Fig. 2-4 kind, but have as hereinafter by the governor motion of explanation.Carry out the adjusting of focusing by rotating rotatable element 60A and 60B.Notice that the rotatable element 60A and the 60B that illustrate in the drawings have relatively large size, so but can be much smaller size because it only needs to use rarely it in practice.Rotatable element 60A, 60B can be made enough little and be recessed in framework, thereby its overhang below the edge of framework is little or completely outstanding.This prevents that rotatable element position from leaning against on wearer's cheek, or additionally becomes obstacle, and covers rotatable element it is not seen, the outward appearance that can not affect glasses thereby glasses have that attractive outward appearance and governor motion are blocked.This combined lens has optical axis 12A, 12B.In the adjustment process of focal length, the relative position of eyeglass axis 12A, 12B keeps substantially constant as described hereinafter.This is important, due to for correct vision, optical axis should with wearer's eye center between distance substantially align.

Figure 10 shows the rear view (from wearer's visual angle) of the half of this pair of glasses 1, and it is separated by line A-A ' and framework is cut open to illustrate inner structure.A lens element 66A is connected to control lever 62 at tie point 62A place, and a lens element 66B is connected to 62B.This control lever 62 is about the some 62C pivotable of the centre between tie point 62A and 62B.By this structure, the transverse shifting of a lens element will cause another lens element transverse shifting in the opposite direction.Preferably, the transverse shifting amount of each lens element is identical and lens light axis is maintained at the same position with respect to framework.

Lens element 66A interacts with rotatable element 60A via interlocking tooth 68 and 70A, and wherein tooth 68 is formed on the lower limb of lens element 66A, and tooth 70A is formed on rotatable element 60A.Therefore, the rotation of rotatable element 60A is converted into the transverse shifting of lens element 66A.In this embodiment, rotatable element 60A has two parts of different-diameter, and wherein tooth 70A is formed on interior small diameter portion 72A above, and tooth 70B is formed in the adjusting part of outer major diameter part 72B.The lower part of rotatable element 60A is outstanding slightly below the feather edge of framework, thus user can Contact Tooth 70B manually to rotate rotatable element 60A.This can engage with tooth 70B and the realization of most convenient ground by user's thumb.This rotatable element also can be configured such that its lower part with tooth 70B is outstanding but recessed slightly below framework, thus user's thumb (or finger) still can by press framework lower limb and and indented joint.Rotating element 60A rotates about pin 61, and this pin 61 is connected to framework 2.

Multiple pins (stud) 3 as shown in the figure, it allows the transverse shifting of lens element simultaneously with support lenses element from frame part 2a to inner process.Can provide to the quantity of the pin 3 of glasses 1 and be not limited to the quantity shown in Figure 10.The size of element is also not limited to the size of the element using in Figure 10.

Figure 11 show two lens element 66A and 66B with and how to be connected to the skeleton view with more details of control lever 62.This control lever 62 is pivotally connected to by the pin 74 of the medial axis hole 62C through control lever 62.This pin 74 is connected to the frame part 2a of glasses 1.Align along axis X 1 in this pin 74 and medial axis hole.Lens element 66A is pivotally connected to control lever 62 by pin 76C, and this pin 76C is through the hole 62A of control lever 62 and be connected to the hole 76A in the projection 78A of lens element 66A.Hole 62A and 76A and pin 76C align along axis X 2.Lens element 66B is pivotally connected to control lever 62 by pin 76D, and this pin 76D is through the hole 62B of control lever 62 and be connected to the hole 76B in the projection 78B of lens element 66B.Hole 62B and 76B and pin 76D align along axis X 3.Hole 62A, 62B, 62C, 76A, 76B, control lever 62, projection 78A and 78B, pin 74,76C, 76D, and the size of lens element 66A and 66B, as the framework 2 of glasses 1 is not limited to the size as shown in figure or configuration.

In order to regulate this glasses, user rotates rotatable element 60A, and it is done in order to mobile spectacles element 66A laterally.In the time that lens element 66A laterally moves to right side, control lever 62 is rotated counterclockwise, thereby promotes lens element 66B transverse shifting respective amount to the left, as understood from Figure 11.Similarly, lens element 66A to the left transverse shifting will make lens element 66B move to the right.

Figure 12 shows by the sectional elevation of the axis of rotatable element 60A, shows the more details of different piece 61A and the 61B of rotatable element, and lens element 66A and the framework 2 that is all arranged in glasses 1 being connected of rotatable element 60A.The axis of rotatable element 60A is depicted as axis X 4.Rotating element 60A has two parts 72A and the 72B of different-diameter, and wherein the diameter of part 72A is less than the diameter of 72B.Part 72A has tooth 70A, and it interlocks with the tooth 68 that is connected to or is formed on lens element 66A.Part 72B also has the part of adjusting 70B, thereby focuses for manually rotating rotating element.This adjusting part 70B can comprise tooth, or is applicable to the coarse or level and smooth surface of manual adjustments.Part 72A and 72B are rotationally attached to framework 2 via pin 61.The shape of element and distance are therebetween not limited to shown in Figure 12.

In the time that user regulates glasses by rotating rotatable element 60A, part 72A and 72B rotate jointly, but the difference of the diameter between two parts causes compared with regulating the movement of part 70B, lens element moves small distance, thereby the meticulous adjusting of eyeglass can be undertaken by the more rough adjusting of rotatable element 60A.By changing two-part diameter ratio, controllable adjustable precision, the i.e. relative transversal displacement of lens element.Although only show two parts 61A and 61B in Figure 12, but the invention is not restricted to only two parts or minimum two parts.For example, can use the combination of rotatable element, the rotatable element of for example interlocking 80 and 90, it is arranged on through the relative tilt line D-D ' of its

axis

81,91 upper, as shown in Figure 13.

Governor motion is illustrated for a combined lens, is provided with governor motion but should understand each combined lens, thereby two eyeglasses can regulate to meet the each eyes that adorn oneself with independently.

Therefore, describe the present invention with reference to above-mentioned embodiment.Should be understood that these embodiments can be modified to various deformation and optional form by mode well known by persons skilled in the art, and also can be used for other embodiment about the feature of an embodiment of the invention explanation.For example, the lens element of the second embodiment can have gradient surface and flat surfaces, and wherein flat surfaces abuts each other with aspectant relation.High viscosity liquid or gel film can be used on (no matter whether it has the flat surfaces of abutting) between two lens elements, to lubricate the composition surface between lens element and to provide stick-slip effect to prevent from by mistake regulating eyeglass to keep the position of lens element to fix.Can select liquid or gel to mate more nearly the refractive index of lens element, to improve the light transmission by eyeglass.Although show the lens shape of general rectangular, but can change eyeglass and framework 2 into various shape, comprise circle, ellipse and microscler.

Except above-mentioned, also can further revise and not depart from the spirit and scope of the invention the structure of explanation here and technology.Therefore, although embodiment has been described, but these are not only for example limits the scope of the invention.

Claims

1. glasses (1), it is provided with framework (2) and a pair of combined lens (66A, 66B) by described framework (2) carrying, and each combined lens (8,66) has adjustable focal length and comprises:

Two lens elements (8A, 8B, 66A, 66B), its optical axis along described combined lens (8,66) (Y1, Y2) is arranged in tandem; With

Governor motion, its be arranged to by described two lens elements (8A, 8B, 66A, 66B) relative to each other transverse shifting to change described focal length, each lens element (8A, 8B, 66A, 66B) can oppositely and transverse to the side of the optical axis (Y1, Y2) of described lens element (8A, 8B, 66A, 66B) move up with another lens element (8A, 8B, 66A, 66B), thereby described optical axis (Y1, Y2) remains substantially stationary with respect to described framework (2); Described governor motion comprises:

At least one framework-connection rotatable element (40,60A, 60B), it engages the transverse shifting that is used for promoting described at least one lens element (8A, 8B, 66A, 66B) with at least one lens element (8A, 8B, 66A, 66B); With

At least one control lever (44,46,62), it is connected in the described framework (2) of described glasses (1) pivotly, for the transverse shifting of a lens element of described combined lens is translated into another lens element transverse shifting in the opposite direction.

2. glasses according to claim 1, is characterized in that described control lever is connected to the outward flange of each lens element of combined lens.

3. glasses according to claim 1 and 2, is characterized in that described rotatable element (60A, 60B) is configured as wheel, the edge of wherein said wheel and the edge join of at least one lens element substantially.

4. according to glasses in any one of the preceding claims wherein, it is characterized in that described rotatable element (60A, 60B) comprises gear, this gear and at least one lens element have the edge join of respective teeth.

5. according to the glasses described in any one in aforementioned claim, it is characterized in that described rotatable element is have central shaft substantially circular, wherein said central shaft is connected to the framework of described glasses pivotly.

6. according to glasses in any one of the preceding claims wherein, it is characterized in that described rotatable element has at least Part I (61A) and Part II (61B), wherein said Part I (61A) engages with described lens element, and described Part II (61B) has the part of adjusting (70B), adjacent for combined lens described in manual adjustments one in the described edge that regulates part (70B) and described framework.

7. according to glasses in any one of the preceding claims wherein, it is characterized in that described rotatable element surrounded at least in part by the described framework of described glasses.

8. according to glasses in any one of the preceding claims wherein, it is characterized in that the described rotatable element of each combined lens is positioned in the feather edge place of the described framework of described combined lens below.

9. according to glasses in any one of the preceding claims wherein, the heart can pivotable about the point of fixity in described framework therein to it is characterized in that described control lever, and is connected with described two lens elements at its each end adjacent.

10. according to glasses in any one of the preceding claims wherein, it is characterized in that at least one pin (3) is arranged in the framework of described glasses around described at least two lens elements, for supporting and guide the transverse shifting of described lens element.

11. according to glasses in any one of the preceding claims wherein, it is characterized in that each combined lens comprises at least one guide rail (36,38), this at least one guide rail (36,38) links together described two lens elements guide its transverse shifting.

12. glasses according to claim 10, it is characterized in that at least part of carrying by described lens element of described guide rail, and have channel cross-section (28), this channel cross-section (28) receives the complementary projection (32) of being carried by another lens element.

13. according to glasses in any one of the preceding claims wherein, it is characterized in that described governor motion can be blocked configuration and stop, to prevent from by mistake changing lens position.

14. glasses according to claim 13, stop described in it is characterized in that configuration comprises the interlocking tooth being positioned on described framework.

15. according to glasses in any one of the preceding claims wherein, it is characterized in that described lens element has the relation of abutting flat surfaces facing each other.

16. according to glasses in any one of the preceding claims wherein, it is characterized in that described lens element separates by the film of liquid or gel.

17. glasses according to claim 16, is characterized in that the liquid or the gel that separate described lens element comprise high viscosity liquid or gel.

18. according to the glasses described in claim 16 or 17, it is characterized in that the described liquid or the gel that separate described lens element provide stick-slip effect, are not regulated unintentionally with the position that keeps described lens element.

19. according to the glasses described in any one in claim 16-18, it is characterized in that the liquid of the lens element that separates described eyeglass or gel are suitable for minimizing by the change of the refractive index of the light in the gap between described lens element and described lens element.

20. according to glasses in any one of the preceding claims wherein, it is characterized in that described eyeglass is polycarbonate.