DE102018218987A1 - Spectacle lens for data glasses, data glasses and method for operating a spectacle lens or data glasses - Google Patents

Abstract

The invention relates to a spectacle lens (402) for data glasses (400). The spectacle lens (402) has an electrochromic layer (404), the spectacle lens (402) being set up and designed to be used in an AR mode or in a PR mode in a first state, which has a first transmittance , and in a second state, which has a second transmittance that is smaller than the first transmittance, to be used in a VR operation. The invention further relates to data glasses (400) which comprise: a spectacle lens (402); a first light source for emitting a first light beam (166); a second light source for emitting a second light beam (167); wherein the first light beam (106) is reflected by the AR deflection element (408) and the second light beam (167) by the VR deflection element (406); wherein the VR deflection element (406) arranged or arrangable on the spectacle lens (402) of the data glasses (400) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting the second light beam (107) in the direction of a The user’s eye lens (108) and / or by focusing the second light beam (167); wherein the AR deflecting element (408) arranged or arranged on the spectacle lens (402) of the data glasses (400) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting the first light beam (106) in the direction of a The user’s eye lens (108) and / or by focusing the first light beam (166); and wherein the AR deflecting element (408) is used in AR mode and the VR deflecting element (406) is used in VR mode; and a reflection element (112) for reflecting the first light beam (166) and the second light beam (167) onto the spectacle lens (402).

Description

The present invention relates to an eyeglass lens for data glasses, such data glasses and a method for operating such glasses or such data glasses.

State of the art

The development of helmet-mounted or head-mounted (HMD) or head-worn displays (HWD) has been an active area of research since the 1960s. One form is Virtual Reality (VR) systems. Above all, however, it is the development of augmented reality (AR) or mixed reality devices that offers interesting opportunities for situation-related and individualized information provision in work and everyday life. Due to high costs and bulky optics, HMDs are still primarily used in the military sector. However, civilian professional groups and consumers can benefit from a handy and inexpensive HMD device in everyday life and leisure. So far, however, no large-scale consumer product has been successfully placed on the market. A big challenge is e.g. mutually influencing requirements for the optical and mechanical specifications. There are currently two different types of HMDs on the market. On the one hand, these are light, handy HMDs whose imaging and sensory systems are kept as small as possible, which is why they only have a limited range of functions. On the other hand, there are HMDs with relatively voluminous optics, possibly in combination with several sensors and cameras, which enable more sophisticated image displays and interactions between the perception of the environment and the overlaid image information, but are significantly larger, heavier and less ergonomic to use.

In the publication DE 2016 201 567 A1 A projection device for data glasses is disclosed. The projection device comprises an image generation unit for generating at least one first light beam representing first image information and a second light beam representing second image information. The first light beam and the second light beam differ from one another in terms of beam divergence. Furthermore, the first image information and the second image information differ from one another in terms of perceptible image sharpness. Furthermore, the projection device comprises at least one deflection element which is designed to display the first image information using the first light beam within a first field of view of an eye and to display the second image information using the second light beam within a second field of vision of the eye located outside the first field of vision.

Disclosure of the invention

The spectacle lens is intended for use with data glasses. The spectacle lens has an electrochromic layer.

An electrochromic layer is understood to mean a layer which changes a light transmission through the layer when a voltage is applied. The term electrochromy is used to summarize the ability of molecules and crystals to change their optical properties through an external electric field or a current flow. The basis is the influencing of electron states (redox reaction). Typically one finds strong electrochromic effects with some transition metal oxides e.g. B. tungsten oxide, complex compounds z. B. Berlin blue and some conductive polymers. In the case of conductive polymers, the polymer backbone can be reversibly electrochemically oxidized and reduced; in the case of thin layers, the color of the conductive polymer depends on the oxidation state. Examples include 3,4-polyethylene dioxythiophene PEDOT and polyaniline.

Electrochromic materials are known in the prior art which, if they are in contact with a suitable ion source, change their optical properties when an external potential is applied. Possible materials are e.g. Tungsten oxide or the oxides of titanium, niobium, tantalum and molybdenum. The switching process is reversible and can be reversed by an opposite voltage. The transmittance can be changed by applying the voltage from transparent to a strongly colored state.

An electrochromic layer system can have the following basic structure. A glass substrate is coated with a transparent, electrically conductive film (TCO). This film contains the actual electrochromic layer, which changes color when electrons from an external circuit and ions from the electrolyte are introduced. The electrolyte consists of a film of organic or inorganic, electrically insulating material with high ionic conductivity. The counter electrode is in contact with it, which in turn is usually applied to a glass pane with a conductive coating. The ions required to switch the electrode are stored in it. The application of a voltage in a range of, for example, less than 5 V between the electrodes leads to an ion exchange between the layers, which results in a change in the optical properties of the overall system. Electroless systems keep their coloring many hours, so that energy is only consumed during the switching process itself.

Market-ready products that can be colored electrochromically are e.g. intelligent building glazing, switchable car windows and roofs as well as switchable mirrors for cars, which are made of reflective material on which an electrochromic layer system is applied. This can then change the reflectance of the overall system by modulating its transmittance.

This means that electrochromic coating systems are already produced in a wide variety of sizes (small mirrors to large-format building glazing) and also in large quantities and are therefore also relatively inexpensive. This opens up other possible applications, such as switchable ski goggles or motorcycle helmets. Electrochromic eyeglass lenses are now on the market, and they will also be used for HMDs in the future.

An electrochromic device changes the light transmission properties depending on a voltage and thus enables control over the amount of light and heat that passes through the device. In an electrochromic window, the electrochromic material changes its opacity: it changes between a transparent and a colored state. A surge is required to change its opacity. However, if the change has been made, no current is needed to maintain the particular hue that has been achieved.

Data glasses can be understood as an HMD. The term data glasses should also be understood to mean video glasses, a helmet display or a VR helmet.

The spectacle lens is set up and designed to be used in an AR mode or in a PR mode in a first state, which has a first degree of transmission. The term AR stands for augmented reality (AR), and the term PR stands for "pure reality", i.e. for a state in which the light sources are switched off and the system is normal, in particular refractive, glasses. In the PR state, the lens can be used for sunglasses. In further embodiments, an electrochromic glass can also be switched in color if configured accordingly.

Furthermore, the spectacle lens is set up and designed to be used in a VR mode in a second state, which has a second transmittance which is smaller than the first transmittance. The term VR stands for virtual reality (VR).

Here, the first transmittance is greater than the second transmittance, since when using the glasses in VR mode or VR mode, the environment should preferably no longer be perceived. In VR mode, this means that the user of the data glasses or of the spectacle lens can preferably not see anything through the spectacle lens. The second transmittance is preferably partially transparent, particularly preferably impervious. In AR operation, it is necessary that the user can see something through the data glasses or through the glasses. It is therefore preferred that the first transmittance is partially transparent, particularly preferably transparent.

The spectacle lens and data glasses with such a spectacle lens have the advantage of a multifunctional system which has an increased number of possible uses. The advantages of AR data glasses and VR data glasses are combined in a single pair of data glasses. Furthermore, a user does not have to switch between AR and VR data glasses.

Furthermore, the electrochromic layer system has the advantage that only small voltages of less than 5 volts are required for controllable switching. The overall system is very efficient since the electrochromic layer system only requires energy when switching.

HMDs on the market usually have a very limited range of functions. They are usually either VR or AR devices and usually do not offer any additional functions such as sunglasses, e.g. can be disadvantageous when used in outdoor sports. In addition, a major weakness of today's HMDs is their size and weight. They look beefy and unattractive and offer limited comfort. The spectacle lens can be switched between the first and the second transmittance. This means that you can switch between AR mode and VR mode. The spectacle lens and data glasses with such a spectacle lens thus advantageously combine the advantages of AR data glasses and VR data glasses.

According to a preferred embodiment, the first transmittance is established by applying a first potential to the electrochromic layer in the electrochromic layer and the second transmittance is established by applying a second potential to the electrochromic layer in the electrochromic layer.

Thus, a change in the Transmittance of the lens can be achieved. A low level of transmission, at which the environment is no longer perceived by the user, is necessary for VR operation, a higher level of transmission, at which the environment is perceived by the user, is necessary for AR operation.

According to a further preferred embodiment, the spectacle lens has a VR deflection element which is used to project an image onto a retina of a user of the data glasses by deflecting a light beam in the direction of a user's eye lens and / or focusing the light beam. The VR deflection element is used here in VR mode. In this way, it is advantageously achieved that the spectacle lens can be deflected to the eye of the user by a light beam which strikes the VR deflection element and, for example, only interacts with the VR deflection element.

The light beam can preferably be a laser beam. This is preferably generated by a laser source.

The deflecting element can e.g. be a holographic element or a free-form mirror.

A holographic element can be understood to mean, for example, a holographic-optical component, or HOE for short, which, for example, can perform the function of a lens, a mirror or a prism. Depending on the embodiment, the holographic element can be selective for certain colors and angles of incidence. In particular, the holographic element can perform optical functions that can be imaged into the holographic element with simple point light sources. As a result, the holographic element can be produced very inexpensively.

The holographic element can be transparent. This allows image information to be overlaid with the environment.

By means of a holographic element arranged on a spectacle lens of data glasses, a light beam can be directed onto a retina of a wearer of the data glasses in such a way that the wearer perceives a sharp virtual image. For example, the image can be written directly onto the retina by scanning a laser beam via a micromirror and the holographic element.

Such a projection device can be implemented comparatively inexpensively in a small installation space and makes it possible to bring an image content into a sufficient distance from the carrier. This enables the contact-analogous overlay of the image content with the surroundings. Because the image can be written directly onto the retina using the holographic element, a flat display element such as e.g. an LCD or DMD based system. Furthermore, a particularly large depth of field can be achieved.

As a rule, the deflection behavior on the surface of the holographic element is different at every point. As already mentioned above, it is generally not the case that the angle of incidence is equal to the angle of reflection. The portion of the surface of the holographic element which serves to deflect the light beam to the eye of a user is referred to as the functional region.

One advantage of using an HOE is that the optical function can be implemented independently of the surface normal. In principle, some optical functions can also be realized with a free-form mirror instead of with an HOE. For example, an ellipsoid segment can be interpreted as a free-form mirror that focuses light from a point source in the first focal point into the second focal point. The surface normal of such a free-form mirror changes locally, since the reflection law must apply locally here. In contrast, a comparable optical function can be realized with a volume hologram on a flat substrate. In this case, the surface normal remains constant over the entire substrate surface. Instead, the lattice vector of the local Bragg structure changes over the substrate.

According to yet another preferred embodiment, the spectacle lens has an AR deflection element which is used to project an image onto a retina of a user of the data glasses by deflecting the one light beam in the direction of an eye lens of the user and / or focusing the one light beam. Here, the AR deflecting element is used in AR mode. In this way, it is advantageously achieved that the spectacle lens can be deflected to the eye of the user by a light beam which strikes the AR deflection element and, for example, only interacts with the VR deflection element.

In the case of data glasses, it is the rule that the light is deflected by a reflection element, for example a micromirror, by a scanning movement into a conical spatial area and is thus scanned via the spectacle lens as a deflection element. In order to generate an image on the retina by means of this scanning movement, the incident light must be deflected locally by the deflecting element in order to produce a second cone, the vertex of which preferably coincides with the pupil of the eye under observation in order to generate a maximum angular range. Because the necessary Deflection directions both in plane-parallel, ie neutral, glasses and in curved glasses, for example correction glasses, can deviate from the angular condition of the reflection law, the deflection elements are preferably implemented as HOE. The VR deflecting element and / or the AR deflecting element thus preferably each have an HOE or consist of one. Another advantage of using volume holograms is the wavelength selectivity, which allows a holographic surface to be scanned with light of different wavelengths and the effect of the deflector to be designed to be wavelength-specific by combining different holographic structures.

One approach to realizing sophisticated imaging with a space-saving design is a laser-based retina scanner. In contrast to most other concepts, an imaging optic is not used here, which fades an image of a display area into the user's field of vision via an imaging system. Instead, a beam is generated here by means of at least one, in the case of polychromatic systems also by means of a plurality of laser sources, which beam is directed via a MEMS (micro-electro-mechanical system) mirror and can be scanned by deflecting the mirror over the retina. Due to the latency in the human visual system, the impression of a flat image or of superimposed image contents can thus be generated by specifically controlling the mirror and laser source. The advantage of this system concept is the small number of optical components, which also take up little space.

One way of realizing a full-color RSD is to light multiple colors, e.g. red, green and blue, to form a beam that then falls on the MEMS mirror. The switching of the individual light sources is synchronized with the movement of the mirror. One way to operate the eye from any direction is to create multiple eye boxes. This can e.g. can be achieved by using wavelength-specific deflection elements applied to the spectacle lens. For this, per color, e.g. red, green and blue, as many different wavelengths are used as eye boxes are to be created. The wavelengths for a color should be so similar that they cannot be distinguished visually.

According to a further embodiment, the spectacle lens is designed and set up to set the first transmittance and / or the second transmittance automatically or manually.

These possibilities not only offer design freedom in terms of aesthetics and fashion aspects, they also make it possible to adaptively design the spectacle lens. It can be individually adapted to the visual situation as well as to the user and his current state of health. The spectacle lens or the control unit of the spectacle lens can be designed so that the adjustment is carried out automatically, manually or in combination. For example, a sensor, e.g. a photodiode can be used to determine the ambient brightness and to automatically darken the glasses in AR and PR mode. At the same time, devices can be attached which enable the user to change the automatically set brightness. The control unit of the spectacle lens could also be able to get to know and save the preferences of the user and to take them into account during the automatic setting.

These adaptation options can not only increase comfort, but can also be safety-relevant. For example, glare effects can be avoided by the transmittance being reduced so quickly when the intensity of an incident light beam increases rapidly that the user is not dazzled. With a suitable coloring, the contrast vision can possibly be improved. There are also opportunities to save energy if darkening is partially used in AR mode. The light sources are then less bright so that the information to be faded in is clearly visible against a bright background.

Thus, there is advantageously increased security due to the expanded customization option. There are fewer accidents due to glare.

According to a further embodiment, the spectacle lens has a layer for generating electrical current to supply or support an energy requirement of the data glasses. Here, the layer has at least one transparent solar cell. The at least one solar cell is preferably an organic solar cell. This advantageously results in a power saving for the power supply to the spectacle lens.

In addition to the above-mentioned spectacle lens, the data glasses have a first light source for emitting a first light beam, a second light source for emitting a second light beam and a reflection element for reflecting the first light beam and the second light beam onto the spectacle lens.

A light source can be understood to mean a light-emitting element such as a light-emitting diode, in particular an organic light-emitting diode, a laser diode or an arrangement of several such light-emitting elements. In particular, the light source can be designed to emit light of different wavelengths. The light beam can be used to generate a plurality of pixels on the retina, wherein the light beam sweeps over the retina, for example in rows and columns or in the form of Lissajous patterns, and can be pulsed accordingly. An eyeglass lens can be understood to mean a pane element made of a transparent material such as glass or plastic. Depending on the embodiment, the spectacle lens can be shaped as a correction lens or have a tint for filtering light of certain wavelengths, such as UV light.

Since laser light can also be used, a light beam in the paraxial approximation can also be understood as a Gaussian beam.

A reflection element can be understood to mean, for example, a mirror, in particular a micromirror or an array of micromirrors, or a hologram. A beam path of the light beam can be adapted to given spatial conditions by means of the reflection element. For example, the reflection element can be implemented as a micromirror. The micromirror can be designed to be movable, for example have a mirror surface that can be tilted about at least one axis. Such a reflection element offers the advantage of a particularly compact design. It is also advantageous if the reflection element is designed to change an angle of incidence and, additionally or alternatively, a point of incidence of the light beam on the holographic element. As a result, the deflecting element can be swept across the surface, in particular approximately in rows and columns, with the light beam.

Furthermore, the reflection element can be a mirror with a deformable surface. This has the advantage that the reflection element can not only deflect the light beam, but can also change beam parameters. As a result, the number of optical elements can be reduced and, alternatively or additionally, the perceived image quality can be influenced.

The first light beam is reflected by the AR deflection element and the second light beam by the VR deflection element. Furthermore, the VR deflection element which is arranged or can be arranged on the spectacle lens of the data glasses serves to project an image onto a retina of a user of the data glasses by deflecting the second light beam in the direction of an eye lens of the user and / or by focusing the second light beam, and this on the spectacle lens AR deflection element arranged or to be arranged in data glasses, projecting an image onto a retina of a user of the data glasses by deflecting the first light beam in the direction of an eye lens of the user and / or by focusing the first light beam.

In addition, the AR deflection element is used in AR operation and the VR deflection element in VR operation.

The spectra of the first and second light beams and the AR deflecting element and the VR deflecting element are such that the first light beam interacts with the AR deflecting element but does not interact with the VR deflecting element and the second light beam interacts with the VR deflecting element. but not with the AR deflecting element. This advantageously ensures that the function of the AR mode is performed by the AR deflecting element and the first light beam and the function of the VR mode is performed by the VR deflecting element and the second light beam and thus the functions of the AR mode and the VR mode are separated from each other. It is therefore preferred that only the first light source and not the second light source is used in AR operation. It is also preferred that only the second light source and not the first light source is used in VR operation.

Such data glasses can be used in a VR operation in which only the second light source is used and interacts with the VR deflection element, in an AR operation in which only the first light source is used and interacts with the AR deflection element, as well as in VR operation in which no light source is used.

The data glasses thus have the same advantages as the above-mentioned spectacle lens and also the advantages that the three above-mentioned different operating modes (AR, VR, PR operation) can be used.

According to yet another embodiment, the data glasses further have a third light source for emitting a third light beam and a fourth light source for emitting a fourth light beam, a second AR deflecting element and a second VR deflecting element. Here, the first light source, the second light source, the AR deflection element and the VR deflection element operate a first eyebox and operate the third light source, the fourth light source, the second AR deflection element and the second VR deflection element a second eyebox.

The third light beam is reflected by the second AR deflection element and the fourth light beam by the second VR deflection element. Here the spectra of the third and fourth light beam and the second AR deflection element and the second VR deflection element are such that the third light beam interacts with the second AR deflection element, but not with the second VR deflection element and the fourth light beam with the second VR Deflection element interacts, but not with the second AR deflection element. This advantageously ensures that the function of the AR operation is accomplished by the second AR deflection element and the third light beam and the function of the VR operation by the second VR deflection element and the fourth light beam and thus the functions of the AR operation and the VR -Operation are separated from each other. Furthermore, it goes without saying that the light rays and the deflection elements of the first and the second eyebox do not interact with one another. This advantageously ensures that two eyeboxes can be operated.

Alternatively, using the sharp and unsharp field of vision of the human eye and, alternatively or additionally, an adaptive beam of rays can also be used with fewer light sources and deflection structures.

If polychromatic, e.g. working with RGB light, two light sources and two deflection structures are used for each color or wavelength used.

The method is used to operate an eyeglass lens described above or to operate data glasses described above.

According to the method, a switch is made from AR mode or from PR mode to VR mode or from VR mode to AR mode or PR mode.

Here, the spectacle lens can be used in a first state, which has a first transmittance, in an AR mode or in a PR mode, and the spectacle lens in a second state, which has a second transmittance, which is smaller than the first transmittance , usable in a VR operation.

When switching from AR or PR to VR operation, on the one hand the electrochromic layer is darkened or switched to opaque and on the other hand the light sources intended for AR operation are switched off and the light sources intended for VR operation switched on so that the other deflection structure acts. The design of the VR deflection structure influences the distance at which the user perceives the displayed image content, at least when viewed monoscopically. In stereo mode, the depth indication of the binocular disparity can advantageously also be used to convey depth information.

The advantages of the method have already been explained above in connection with the spectacle lens and the data glasses.

Figure list

• 1 zeigt eine schematische Darstellung eines Brillenglases für eine Datenbrille gemäß einer Ausführungsform.
• 2 zeigt eine schematische Darstellung einer elektrochromen Schicht, wie sie in einem Brillenglas oder einer Datenbrille gemäß Ausführungsformen der Erfindung verwendet wird.
• 3 zeigt eine schematische Darstellung einer Datenbrille gemäß einer Ausführungsform.

Embodiments of the invention are shown in the drawings and are explained in more detail in the following description.

• 1 shows a schematic representation of a spectacle lens for data glasses according to an embodiment.
• 2nd shows a schematic representation of an electrochromic layer, as it is used in an eyeglass lens or data glasses according to embodiments of the invention.
• 3rd shows a schematic representation of data glasses according to an embodiment.

Embodiments of the invention

1 shows an eyeglass lens 402 for data glasses, the data glasses in 2nd is shown. The spectacle lens 402 has an electrochromic layer 404 on. Furthermore, the spectacle lens 402 a layer 410 which has transparent organic solar cells to support the energy supply of the data glasses. The layer 410 points away from the user of the data glasses so that sunlight can be captured well.

On the user side of the electrochromic layer 404 there is a redirection layer 130 which is a VR deflecting element 406 and an AR deflector 408 has, the AR deflecting element 408 is closer to the user's eye.

Here are the VR deflecting element 406 and the AR redirector 408 such that a first beam of light 166 only from the AR deflecting element 408 , but not from the VR deflecting element 406 and a second beam of light 167 only from the VR deflecting element 406 and not from the AR deflecting element 408 is reflected.

The lens is in a first state 402 , especially the electrochromic layer 404 , transparent and is used in an AR operation. The lens is in a second state 402 opaque, i.e. not transparent, and is used in a VR operation. The different degree of transmission of the lens 402 can be done by applying different voltages to the electrochromic layer 404 can be achieved. This is in 2nd explained in more detail.

2nd shows a basic structure of the electrochromic layer 404 , which can also be called an electrochromic window. The electrochromic layer 404 itself consists of a multi-layer system in which a coloring electrode, namely an actual electrochromic layer 420 through an ion conductor 422 from an ion storage layer 424 is separated.

The structure of the electrochromic layer 404 is written from right to left. A substrate made of glass 414 is with a transparent, electrically conductive film (English: transparent conductive oxide, TCO) 416 coated. On the conductive film 416 is the actual electrochromic layer 420 that occur when electrons from the external circuit and ions from the ion conductor are introduced 422 colors. The ion guide 422 is alternatively called electrolyte. The ion guide 422 has a film of organic or inorganic, electrically insulating material with high ionic conductivity.

The ion storage layer acting as the counter electrode 424 , which deals with the ion conductor 422 is in contact, is in turn on a substrate realized by a further glass pane 414 with conductive coating 416 upset.

In the ion storage layer 424 the ions required to switch the electrode are stored. It is optimal for the switching properties of the overall system if the counterelectrode has electrochromic properties complementary to the electrode, ie cathodic or anodic electrochromic, since in this case both layers become discolored and decolored at the same time and ensure a larger transmission stroke of the overall system.

Applying a voltage in the range less than 5 V between the coatings functioning as electrodes 416 leads to an ion exchange between the layers, which results in a change in the optical properties of the overall system. The switching time until complete dyeing or bleaching is for most material combinations in the range of up to 10 minutes. Electroless cells last for many hours so that energy is only consumed during the switching process.

3rd shows smart glasses 400 which is a projection device 100 and an eyeglass lens 402 having. The spectacle lens 402 exhibits the electrochromic layer 404 as well as the layer 410 which has transparent organic solar cells to support the energy supply of the data glasses. The projection device 100 has one in a housing 105 arranged light source 104 , a collimation element 114 , a reflection element 112 as well as a deflection layer 130 on. The deflection layer 130 has the VR deflecting element 406 and the AR redirector 408 on. Both the VR deflecting element 406 as well as the AR deflecting element 408 are designed as HOE.

One from a light source 104 emitted light beam 106 is using a lens as a collimation element 114 collimated and in the direction of a micromirror as a reflection element 112 guided. Here, the light source 104 emit a first light beam and a second light beam, between which it is possible to switch. In 3rd is for the sake of clarity only a single light beam, namely light beam 106 , shown. The reflection element 112 directs the light beam 106 towards the redirection layer 130 around. The deflection layer 130 is on the lens 402 , namely on the electrochromic layer 404 , applied. If the first light beam hits the deflection layer 130 falls, this is from the AR deflecting element 408 deflected towards the user's eye. If the second light beam on the deflection layer 130 falls, it is from the VR deflecting element 406 deflected towards the user's eye.

The one from the redirection layer 130 deflected beam of light 106 then meets an eye lens 108 of the eye from where the light beam 106 on the retina 110 an eyeball 107 of a user is focused.

The light source 104 is in one on the glasses frame 120 attached housing 105 arranged. At the exit of the housing 105 is the collimation element 114 arranged. The light source 104 , the collimation element 114 and the reflection element 112 can be accommodated in a common housing, not shown, the one from the reflection element 112 reflected light beam 106 is coupled out through a window arranged on one side of the housing. This housing can be on the temple 118 or on the glasses frame 120 be attached.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for better information for the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 2016201567 A1 [0003]

Claims (10)

Spectacle lens (402) for data glasses (400), characterized in that the spectacle lens (402) has an electrochromic layer (404), the spectacle lens (402) being set up and implemented in a first state which has a first transmittance, to be used in an AR operation or in a PR operation; and in a second state having a second transmittance that is less than the first transmittance, to be used in a VR operation. Spectacle lens (402) after Claim 1 , characterized in that the first transmittance is established in the electrochromic layer (404) by applying a first potential to the electrochromic layer (404) and in the electrochromic layer (404) by applying a second potential to the electrochromic layer (404) the second transmittance sets. Spectacle lens (402) after Claim 1 or 2nd , further comprising: a VR deflection element (406) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting a light beam (106) in the direction of an eye lens (108) of the user and / or focusing the one Light beam (106), wherein the VR deflection element (406) is used in VR mode. Spectacle lens (402) after Claim 1 , 2nd or 3rd , further comprising: an AR deflecting element (408) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting a light beam (106) in the direction of an eye lens (108) of the user and / or focusing the one Light beam (106), the AR deflecting element (408) being used in AR mode. Spectacle lens (402) after Claim 3 or 4th , characterized in that the VR deflection element (406) and / or the AR deflection element (408) has an HOE. Spectacle lens (402) according to one of the preceding claims, characterized in that the spectacle lens (402) is designed and set up to set the first transmittance and / or the second transmittance automatically or manually. Spectacle lens (402) according to any one of the preceding claims, further comprising: a layer (410) for generating electrical current for supplying or supporting an energy requirement of the data glasses (402), the layer (410) having at least one transparent solar cell. Data glasses (400) comprising: an eyeglass lens (402) according to any one of the preceding claims; a first light source for emitting a first light beam (166); a second light source for emitting a second light beam (167); wherein the first light beam (106) is reflected by the AR deflection element (408) and the second light beam (167) by the VR deflection element (406); wherein the VR deflection element (406) arranged or arranged on the spectacle lens (402) of the data glasses (400) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting the second light beam (107) in the direction of a The user’s eye lens (108) and / or by focusing the second light beam (167); wherein the AR deflecting element (408) arranged or arranged on the spectacle lens (402) of the data glasses (400) for projecting an image onto a retina (110) of a user of the data glasses (400) by deflecting the first light beam (106) in the direction of a The user’s eye lens (108) and / or by focusing the first light beam (166); and wherein the AR deflecting element (408) is used in AR mode and the VR deflecting element (406) is used in VR mode; and a reflection element (112) for reflecting the first light beam (166) and the second light beam (167) onto the spectacle lens (402). Data glasses (400) after Claim 8 further comprising: a third light source for emitting a third light beam and a fourth light source for emitting a fourth light beam; and a second AR deflecting element and a second VR deflecting element; wherein the first light source, the second light source, the AR deflecting element and the VR deflecting element operate a first eyebox; and the third light source, the fourth light source, the second AR deflecting element and the second VR deflecting element operate a second eyebox. Method for operating a spectacle lens according to one of the Claims 1 to 7 or to operate data glasses according to one of the Claims 8 or 9 , the method comprising: switching from AR mode or from PR mode to VR mode or switching from VR mode to AR mode or to PR mode.

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