SE543994C2

SE543994C2 - Electronic eyewear with ergonomic design

Info

Publication number: SE543994C2
Application number: SE1930272A
Authority: SE
Inventors: Stephen Palmer; Thierry Henkinet
Original assignee: Crystal Vision Sweden Ab
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2021-10-19
Also published as: SE1930272A1

Abstract

The present invention relates to electronic eyewear, and more specifically to the ergonomic design of such eyewear. It is disclosed that by positioning a power-supply system 9 in the back part behind the hinge 3 and with a controlling electronics 8 in the front, then the overall size of the front part can be minimized, thereby enabling for a good ergonomic design. Furthermore, by arranging for the hinge to comprise an electrically conducting material such as but not limited to metallic materials, then the voltage-signals generated by said power-supply system located in the back part can be arranged to pass through the material composing said hinge in order to reach the controlling electronics located in the front without the necessity of utilizing additional electrical cables, thereby further facilitating the ergonomic design of said electronic eyewear according to the teachings of the present invention.

Description

ELECTRONIC EYEWEAR WITH ERGONOMIC DESIGN Field of Invention The present invention relates to the design of electronic eyeWear, and morespecifically to the ergonomic design of electronic eyeWear such as but not lirnited tosWitchable sunglasses, three dimensional (3d) shutter glasses, and prescription glasses With dimmable lenses, etc.

Background art Electronic eyeWear products such as sWitchable sunglasses and 3d shutter glasseshave been on the market for many years. One example is described in US patent no.5,114,218 dated January 11th, 1991 and entitled “Liquid crystal sunglasses Withselectively color adjustable lenses”. Here, a pair of sWitchable sunglasses is describedthat comprise liquid crystal lenses Which can be sWitched between different coloredstates. Another example is found in US patent no. 8,542,326 dated November 17th, 2008and entitled “3D shutter glass for use With LCD displays”. Here, the use of 3d shutterglasses for the vieWing of time-multipleXed stereoscopic 3d images is described.

HoWever, the maj ority of electronic eyeWear products currently on the market arerelatively heavy and bulky in size, thereby providing for an unsatisfactory ergonomicdesign. This is particularly problematic for products such as dimmable sunglasses that aregenerally required to be fashion items.

Moreover, one of the biggest challenges has been the design of the electronics,and more specifically the challenge of incorporating the electronics into the eyeWearproduct in the most ergonon1ic Way possible. This is particularly hampered by the factmost eyeWear products require hinges that separate the temples (i.e. left and rightbranches at the back) from the front part Which comprises the lenses. Moreover, sincespace is usually very limited in the front part of the eyeWear product, then the controllingelectronics necessary to operate said product are typically located in the temples.

HoWever, this then results in the voltage-signals generated by said controlling electronics located in the back part being mandated to pass through the area of the hinge in order toreach the lenses located in the front.

Whilst this can be achieved either via the utilization of thin electrical Wires oralternatively a thin fleXible cable (i.e. ﬂexfilm) running through the area of the hingeaccording to the prior-art, the repeated movement of the hinge as the temples arecontinuously opened and closed may result in the premature failure or break of saidelectrical Wires or ﬂexfilm, thereby resulting in the product ceasing to function correctly.Additionally, the use of said electrical Wires or ﬂexfilm passing through the area of saidhinge is also undesirable from an ergonon1ic point-of-vieW.

Moreover, Whilst recent advancements in electronics has enabled the overall sizeof the controlling electronics to be rr1iniaturized, it is still nevertheless challenging todesign electronic eyeWear With a good ergonomic design When using technologies based on the prior-art.

Summary of Invention An object of the present invention is to provide electronic eyeWear possessing ahigh level of ergonomic design. A further object of the present invention is to providesWitchable sunglasses that are both lightWeight and small in size.

The invention is based on the insight that When the power-supply system islocated in the temples at the back and the electronic controlling system is simultaneouslylocated in the front, then the overall size of the front part can be rninirnized, therebyenabling for a good ergonomic design. Furthermore, by arranging for the hinge tocomprise an electrically conducting material such as but not limited to nickel, copper,iron, silver, gold, aluminum, chromium, brass, bronze, stainless steal or otherwise, then itis disclosed that the voltage-signals generated by said power-supply system located in theback part can be arranged to pass through the material composing said hinge in order toreach the electronic controlling system located in said front part thereof.

This enables electronic eyeWear products to be developed that possess a smalloverall size and Which do not mandate the use of additional electrical cables or otherwise in order to transfer the necessary voltage-signals from the power-supply system located in the back part to the electronic controlling system located in the front part across the areaof the hinge. This therefore enables electronic eyeWear products to be developed thatpossess a higher level of ergonomic design as Well as a higher level of reliability as compared to eyeWear products based on other prior-art technologies.

Brief description of the draWingsThe present invention may be better understood and its objects and advantagesWill become apparent to one skilled-in-the-art by reference to the accompanying draWings, Wherein like reference numerals refer to like elements in several of the figures.

FIG. l: Typical design of conventional eyeWear according to the state-of-the-art.

FIG. 2: Typical design of a hinge according to the state-of-the-art.

FIG. 3: Typical design of electronic eyeWear according to the state-of-the-art.

FIG. 4: Alternative typical design of electronic eyeWear according to the state-of-the-art.FIG. 5: Design of electronic eyeWear according to the present invention.

FIG. 6: Detailed design of electronic eyeWear according to the present invention.

FIG. 7: Detailed design of a hinge according to the present invention.

FIG. 8: Design of a hinge according to a further embodiment of the present invention.

Description of the embodiments Fig. l shows the typical design of conventional eyeWear (i.e. eyeWear that doesnot incorporate any electronics, such as but not limited to photochrornic sunglasses, etc)according to the state-of-the-art. Here, there is provided a front part l comprising both theleft-eye lens la and the right-eye lens lb. There is also provided a back part 2 comprisingboth the left temple 2a and the right temple 2b. Additionally, there is at least one hinge 3located in-between said front part l and said back part 2 and arranged to mechanicallyhold said front and back parts together, Whilst also simultaneously allowing at least one of said temples 2a, 2b to be opened and closed a repeated number of times.

It will be understood by one skilled-in-the-art that in order to optimize theergonomic design of the eyewear product, it is desirable to minimize as much as possiblethe overall size of said front part l thereof. Moreover, for conventional eyewear this isrelatively easy to achieve since said front part l comprises only of said left-eye lens laand said right-eye lens lb, hence the ergonon1ic design for conventional eyewear such asbut not limited to photochromic sunglasses or otherwise is considered to be relativelysatisfactory according to the prior-art.

Fig. 2 shows the typical design of said hinge 3 according to the state-of-the-art.Here, said hinge 3 comprises a first part 3a and a second part 3b, with said first andsecond parts being arranged to make direct mutual physical contact. Furthermore, ascrew, bolt, rivet or likewise (not shown) is typically inserted into the hole denotedelement 5 in the present figure in order to hold said first and second parts 3a, 3bmechanically together and in direct physical contact, whilst simultaneously allowing saidhinge to be opened and closed. The hinge typically comprises a metallic material such asnickel or otherwise in order to provide the required mechanical strength. Moreover, saidfirst part 3a is typically bonded or riveted to the front part of said conventional eyewear(not shown), and said second part 3b is typically bonded or riveted to the back part ofsaid conventional eyewear thereof.

Fig. 3 shows an example of the typical design for electronic eyewear according tothe state-of-the-art. Electronic eyewear is defined as being eyewear that incorporateselectronic components, such as but not lirnited to 3d shutter glasses, electrochromicsunglasses, liquid crystal sunglasses and electrophoretic eyewear. Here, there is providedan electronic circuit board 6 located in the front part l, and both the left-eye lens la andright-eye lens lb each further comprise a stack of at least one electronically controlledoptical-filter (not shown) according to the prior-art. An electronically controlled optical-f1lter is defined as being any optical component whose optical transmission can becontrolled (i.e. switched) via application of an external voltage-signal, such as but notlirnited to at least one of a liquid crystal element, an electrochromic element oralternatively an electrophoretic element.

The electronic circuit board 6 generates the necessary voltage-signals required to operate at least one of said electronically controlled optical-filters and typically comprises one or more of the following elements; power-supply system (eg. battery, solar-cell,capacitor, etc), Printed Circuit Board (PCB), logic circuits, Integrated Circuits (IC),Application Specific Integrated Circuit (ASIC), microprocessor, liquid crystal drivers,and manual button or switch.

It will be understood by one skilled-in-the-art that with this typical designaccording to the prior-art, the electronic circuit board 6 can be electrically connecteddirectly to said electronically controlled optical-filters composing said left and right eyelenses la, lb thereof, hence enabling the necessary voltage-signals generated by saidelectronic circuit board to be directly applied to said electronically controlled optical-filters thereto. However, since the typical size of said electronic circuit board 6 isrelatively large, this will result in the overall size for said front part l also being relativelylarge, thereby making it difficult to achieve a good ergonomic design according to theprior-art. Furthermore, although recent developments in electronics have enabled the sizeof said electronic circuit board 6 to be miniaturized, the difficulties in achieving a goodergonomic design nevertheless still remains a principal problem for electronic eyewearbased on prior-art technologies.

Fig. 4 shows a second example of the typical design for electronic eyewearaccording to the state-of-the-art. Here, the electronic circuit board 6 is now located in theleft temple 2a composing said back part 2 behind said hinge 3, thereby enabling theoverall size of said front part l to be relatively small. This hence enables the ergonomicdesign of said electric eyewear to be optimized according to the prior-art.

However, in this case it is now necessary for the voltage-signals generated by saidelectronic circuit board 6 to pass through the area of said hinge 3 in order to reach theelectronically controlled optical-filters (not shown) composing said left and right eyelenses la, lb thereof located in said front part l. This is typically achieved via use of aﬂexible electrical cable 7 (i.e. ﬂexfilm) or otherwise that transfers the voltage-signalsgenerated by said electronic circuit board 6 from said back part 2 to said front part lacross the area of said hinge 3. However, the use of said ﬂeXible electrical cable 7 is notonly undesirable from an ergonomic point-of-view, but it also increases the risk of premature failure when the hinge is repeatedly opened and closed.

Fig. 5 discloses the design of electronic eyewear according to a preferredembodiment of the present invention. Here, there is provided an electronic controllingsystem 8 located in said front part l, and a power-supply system 9 located in at least oneof the temples, 2a, 2b composing said back part 2 thereof. The power-supply system 9comprises at least one of a battery, solar-cell, energy storing capacitor or likewise (notshown) and provides at least some of the electrical power necessary in order to operatesaid electronic controlling system 8. The electronic controlling system 8 comprises atleast one of a Printed Circuit Board (PCB), logic circuits, Integrated Circuits (IC),Application Specific Integrated Circuit (ASIC), microprocessor, photo-sensor or liquidcrystal drivers, but may or may not comprise an additional power-supply system such as abattery, solar-cell, energy storing capacitor or likewise. Furthermore, there is alsoprovided a hinge 4 located in-between said front part l and said back part 2 and arrangedto mechanically hold said front and back parts together, whilst simultaneously allowingone of said temples 2a, 2b to be opened and closed.

The front part l further comprises a left-eye lens la and a right-eye lens lb,wherein said left and right eye lenses each individually comprise a stack of one or moreelectronically controlled optical-filters (not shown) which can be switched between a firstand a second optical state in response to the ambient lighting conditions via use of aphoto-sensor, solar-cell or otherwise (not shown). An electronically controlled optical-filter is defined as being any optical component whose optical transmission can becontrolled (i.e. changed) via application of an external voltage-signal, such as but notlirnited to one of a liquid crystal element, an electrochromic element or alternatively anelectrophoretic element.

Furthermore, a preferred embodiment of the present invention is that saidelectronically controlled optical-filters composing each of said left and right eye lensesla, lb are electrically connected together through the nose-bridge l5, and additionallysaid electronic controlling system 8 is also electrically connected to at least one of saidelectronically controlled optical-filters composing one of said lenses la, lb thereof. Thenose-bridge l5 is defined as being the area in-between said lenses la, lb composing saidelectronic eyewear and is typically placed in close proXimity to the nose when the user is wearing the product.

In yet another preferred embodiment of the present invention, it is disclosed thatthe left and right eye lenses la, lb may alternatively be mutually joined together along acommon edge in order to form one larger lens (not shown) that simultaneously coversboth the left and right eyes instead of comprising two geometrically separate lenses.

Moreover, said electronic controlling system 8 is electrically connected (notshown) to a first side of said hinge 4, and said power-supply system 9 is electricallyconnected (not shown) to a second side of said hinge, wherein said first and second sidesare substantially on opposite edges of said hinge thereof. This enables the voltage-signalsgenerated by said power-supply system 9 located in said back part 2 to pass through thematerial composing said hinge 4 in order to reach said electronic controlling system 8located in said front part l thereto in accordance with the present invention.

Since the electronic controlling system 8 is not mandated to comprise a battery,solar-cell, energy storing capacitor or other power generating system, then it will beunderstood by one skilled-in-the-art that the overall size of said electronic controllingsystem can be rr1iniaturized, thereby allowing the overall size of said front part l to alsobe miniaturized accordingly and thus enabling for a good ergonomic design according tothe disclosed invention. Furthermore, since the voltage-signals required to power saidelectronic controlling system 8 traverse through the material composing said hinge 4,then it is to be understood that no additional fleXible electrical cable or likewise isrequired in order to transport the required voltage-signals from said back part 2 to saidfront part l thereof, thereby further facilitating the ergonomic design of the electroniceyewear product according to the teachings of the present invention.

It will also be understood by one skilled-in-the-art that the magnitude of thevoltage-signals generated by said power-supply system 9 can be arranged to be relativelylow, thereby eliminating any potential hazard associated with the voltage-signals passingthrough the material composing said hinge 4. For example, if said power-supply system 9comprises the commercially available lithium coin-battery denoted CRl025 (not shown),then the voltage-signals will only comprise of 3.0 volt Direct Current (DC). Alternatively,if said power-supply system 9 instead comprises the commercially available silver-oXidecoin-battery denoted SR5l6 (not shown), then the voltage-signals will in this case comprise of only 1.5 volt DC. Moreover, it will be understood by one skilled-in-the-art that low Voltages less than 12 Volt are completely harn1less and will pass through thehinge without creating any associated risk to the user. Therefore, a further embodiment ofthe present invention is that the Root-Mean-Squared (RMS) magnitude of the Voltage-signals passing through said hinge 4 are less than 12 Volt, and more preferablysubstantially equal to 3.0 Volt or alternatively substantially equal to 1.5 Volt.

Fig. 6 discloses further details for the design of electronic eyewear according toadditional embodiments of the present invention. Here, said hinge 4 comprises a firsthinge-element 4a and a second hinge-element 4b, wherein said first and second hinge-elements 4a, 4b are electrically isolated from each other (i.e. electricity is not able to passbetween said first hinge-element 4a and said second hinge-element 4b). Furthermore, saidpower-supply system 9 is electrically connected to a first side of said first hinge-element4a Via an electrical connection 10 such as but not lirnited to an electrical cable, and saidelectronic controlling system 8 is electrically connected together to a second side of saidfirst hinge-element 4a Via an electrical connection 11. Moreover, said power-supplysystem 9 is also electrically connected to a first side of said second hinge-element 4b Viaan electrical connection 12, and said electronic controlling system 8 is also electricallyconnected together to a second side of said second hinge-element 4b Via an electricalconnection 13. This hence allows the Voltage-signals generated by said power-supplysystem 9 located in said back part of said electronic eyewear to traverse through thematerial composing said first and second hinge-elements 4a, 4b thereof in order to be ableto provide electrical power to said electronic controlling system 8 located in said frontpart.

It will be understood by one skilled-in-the-art that in order for the materialcomposing said first and second hinge-elements 4a, 4b to be able to transport saidVoltage-signals, then said material is mandated to be electrically conducting, such as butnot lirnited to metallic materials. Moreover, suitable metallic materials may or may notinclude one of nickel, copper, iron, silver, gold, aluminum, chromium, brass, bronze,stainless steal, or any combination thereof.

Fig. 7 shows further details of the design for said hinge 4 according to the presentinvention. Here, it is disclosed that said hinge 4 comprises at least a first hinge-element 4a and a second hinge-element 4b, wherein said first and second hinge-elements are electrically isolated from each other (i.e. electricity is not able to pass between said firsthinge-element 4a and said second hinge-element 4b). Additionally, said first hinge-element 4a further comprises at least a first part 4al and a second part 4a2, wherein saidfirst and second parts are electrically connected together in series (i.e. electricity is able tofreely pass between said first part 4al and said second part 4a2). Moreover, said secondhinge-element 4b also further comprises at least a first part 4b1 and a second part 4b2,wherein said first and second parts are once again electrically connected together inseries.

It will be understood by one skilled-in-the-art that since each of said hinge-elements 4a, 4b each individually further comprise at least two separate parts 4al, 4a2and 4b1, 4b2 respectively according to the present invention, then said hinge-elementscan be arranged to allow said temples to be mechanically opened and closed whilst stillenabling electrical power to pass through the material composing said hinge-elements 4a,4b thereof. This therefore enables said power-supply system located in said back part toprovide electrical power to said electronic controlling system located in said front partwithout the mandated requirement of using an additional ﬂexible electrical cable orlikewise, thereby improving the ergonomic design in accordance with the objectives ofthe present invention.

In one preferred embodiment of the present invention, said power-supply systemcomprises a coin-battery (not shown), such as but not lirnited to the commerciallyavailable lithium coin-battery denoted CR1025 which delivers 3.0 volt DC. In this case,said first hinge-element 4a can be arranged to transfer +3.0 volt (i.e. positive voltage)from said power-supply system to said electronic controlling system via electricalconnections denoted 10 and 11, and said second hinge-element 4b can be arranged totransfer -3.0 volt (i.e. negative voltage or alternatively the common drain GND) fromsaid power-supply system to said electronic controlling system via electrical connectionsdenoted 12 and 13 thereto.

It will be understood by one skilled-in-the-art that in order for said hinge 4 to beable to transfer the required voltage-signals between said power-supply system and saidelectronic controlling system, it is mandated that the first and second hinge-elements 4a, 4b are electrically isolated from each other. Furthermore, it is also mandated that the two separate parts 4a1, 4a2 composing said first hinge-element 4a are electrically connectedtogether in series, and additionally it is further mandated that the two separate parts 4b1,4b2 composing said second hinge-element 4b are also electrically connected together inseries.

In order to ensure said separate parts 4a1, 4a2 composing said first hinge-element4a are electrically connected together in series at all times, an additional spring element14 may or may not be included as shown in fig. 8 according to a further preferredembodiment of the present invention. A spring element is defined as being any object thatpossesses elastic potential energy as a result of the elastic deformation of said object.Moreover, it will be understood by one skilled-in-the-art that said spring element 14 willresult in said separate parts 4a1, 4a2 being mechanically pressed tightly together, therebyensuring said separate parts maintain direct physical contact with each other at all times.A similar spring element can also be included in-between separate parts 4b1, 4b2composing said second hinge-element 4b (not shown) in order to ensure said separateparts also maintain electrical contact with each other as required herein.

A further preferred embodiment of the present invention is that there is providedan additional mechanical button, switch or likewise (not shown) located within the backpart 2 of said electronic eyewear according to the present invention. Furthermore, saidmechanical button may either be incorporated within said power-supply system 9, oralternatively located in close proXimity to said power-supply system thereof. Moreover,said mechanical button may be configured, for example, so as to be able to manuallyswitch the electronically controlled optical-filters (not shown) composing said lenses la,lb between different optical states. In other embodiments, said mechanical button mayalternatively be configured to trigger other physical responses such as but not lirnited toswitching said electronic eyewear between different operational modes without departingfrom the inventive ideas disclosed herein.

It will be understood by one skilled-in-the-art that by positioning said mechanicalbutton in the back part 2 of said electronic eyewear according to the present invention,then the overall size of said front part 1 can be maintained at a low level, thereby furtherfacilitating the ergonomic design of said electronic eyewear in accordance with the objectives of the present invention.

However, since it is undesirable from an ergonomic point-of-view to haveadditional ﬂexible electrical cables or likewise in order to transport voltage-signals fromsaid back part 2 to said front part 1 across the area of said hinge 4, it is further disclosedthat said power-supply system 9 can be arranged so as to generate one or more Voltage-spikes in rapid succession when said mechanical button is pressed. A voltage-spike isdefined as being a temporary and rapid change in the voltage-signal passing though saidhinge and is characterized by a value of peak voltage (i.e. the maximum magnitude ofsaid voltage-spike), as well as a time duration period for said voltage-spike (i.e. FullWidth at Half Maximum, often abbreviated to FWHM). Furthermore, it will beunderstood by one skilled-in-the-art that said voltage-spike can either comprise atemporary and rapid surge (i.e. increase) in said voltage-signal passing through saidhinge, or alternatively said voltage-spike may comprise a temporary and rapid drop (i.e.decrease or voltage-dip) in said voltage-signal without departing from the inventive ideasdisclosed herein.

Moreover, said voltage-spikes will then pass through the material composing saidhinge 4 and hence reach said electronic controlling system 8 located in said front part 1.Additionally, if said electronic controlling system 8 is arranged to be able to count thenumber of voltage-spikes received, then this provides a method for triggering saidelectronic controlling system located in said front part 1 via pressing of said mechanicalbutton located in said back part 2 without the necessity of incorporating additionalelectrical connections across the area of said hinge 4 according to a further embodimentof the present invention.

For example, said power-supply system 9 may be arranged to provide asuccession of voltage-spikes when said mechanical button is pressed, wherein eachvoltage-spike has a peak magnitude of 6.0 volt and a time duration (i.e. Full Width atHalf Maximum) of 10 microseconds (us), and furthermore the time period betweensuccessive voltage-spikes may be arranged to be 20 milliseconds (ms). Moreover, byconfiguring said power-supply system 9 to provide a continuous rapid succession of saidvoltage-spikes When the mechanical button is held in the depressed position, this thenenables the electronic controlling system 8 located in said front part 1 to distinguish between, for example, a short and a long press of said mechanical button thereof. This therefore enables said electronic controlling system 8 to provide different physicalresponses to said long and short presses of said mechanical button thereof in accordancewith the present invention.

A further preferred embodiment of the present invention is that the peakmagnitude of said voltage-spikes lies in the interval between 1.5 volt and 12 volt, and thetime duration period (i.e. Full Width at Half Maximum) for each individual voltage-Spikelies in the interval between 10 nanoseconds (ns) and 250 microseconds (us). Furthermore,the time period between successive voltage-spikes is arranged to be in the intervalbetween 0.1 rnilliseconds (ms) and 250 milliseconds (ms).

Whilst preferred embodiments of the present invention have been shown anddescribed herein, various modifications may be made thereto without departing from theinventive ideas of the present invention. Accordingly, it is to be understood that the present invention has been described by way of illustration and not limitation.

Claims

1. Electronic eyewear comprisíng a front part 1 and a back part 2, with said front partfurther comprisíng an electronic controlling system 8 and said back part furthercomprisíng a power-supply system 9, and with there being a hinge 4 located in-betweensaid front and back parts which is arranged to mechanically hold said parts together, andwith said electronic controlling system being electrically connected to a first side of saidhinge and said power-supply system being electrically connected to a second side of saidhinge, and with said hinge comprising a first hinge-element 4a and a second hinge-element 4b with said ﬁrst and second hinge-elements being electrically isolated fromeach other, and with said power-supply system providing an electrical voltage that passesthrough said hinge in order to provide power to said electronic controlling system, andwith said power-supply system further being arranged to generate one or more voltage-spikes in rapid succession in response to the pressing of a mechanical button located inthe back part, wherein said voltage-spikes pass through said hinge in order to reach saidelectronic controlling system and thereby providing a signal to said electronic controlling system thereof via the pressing of said mechanical button.

2. Electronic eyewear according to claim 1 wherein said voltage-spikes eachindividually possess a peak voltage in the range between 1.5 volt and 12 volt, and with atime duration period (i.e. Full Width at Half Maximum) in the range between 10 nanoseconds (ns) and 250 microseconds (ps).

3. Electronic eyewear according to clairn 1 wherein the time period between successivevoltage-spikes is in the range between 0.1 rnilliseconds (ms) and 250 milliseconds (ms).

4. Electronic eyewear according to claim 1 wherein said ﬁrst and second hinge-elementscomposing said hinge substantially comprise one of nickel, copper, iron, silver, gold,aluminum, chromium, brass, bronze, stainless steal, or any combination thereof.

5. Electronic eyewear according to clairn 1 wherein said ﬁrst hinge-element 4a furthercomprises a ﬁrst and second part 4al, 4a2, and with said ﬁrst and second parts beingelectrically connected together in series.

6. Electronic eyewear according to claim 5 wherein there is at least one spring element14 located in-between said ﬁrst and second parts 4al , 4a2 composing said ﬁrst hinge-element 4a.

7. Electronic eyewear according to clairn 1 wherein said front part 1 further comprises aﬁrst lens la and a second lens lb.

8. Electronic eyewear according to claim 7 wherein said ﬁrst and second lenses aremutually jointed together along a common edge in order to create one single geometricallens that sirnultaneously covers both the left and right eyes.

9. Electronic eyewear according to clairn 7 wherein at least one of said lenses comprisesat least one electronically controlled optical-ﬁlter such as but not limited to a liquidcrystal element, an electrochromic element or altematively an electrophoretic element,and with said electronic controlling system being electrically connected to saidelectronically controlled optical-filter.

10. Electronic eyewear according to clairn 9 wherein said electronic controlling systemswitches said electronically controlled optical-filter between at least two different optical-states in response to the ambient lighting conditions.

11. Electronic eyewear according to claim 7 wherein said ﬁrst lens compríses at least aﬁrst electronjcally controlled optical-flter, and said second lens comprises at least asecond electronically controlled optical-ﬁlter, and with said ﬁrst and secondelectronically controlled optical-ﬁlters being electrically connected together through the nose-bridge 15.