Display device having a holding device which can be placed on the head of a user

Abstract

The invention relates to a display device comprising: a holding device (2), which can be placed on the head of a user; a first and a second image-generating module (5, 6), which are fastened to the holding device (2) and generate a first and a second image; and a first and a second spectacle lens (3, 4) fastened to the holding device (2); wherein, in the state in which the holding device (2) is placed on the head, the generated first image is presented to the user via the first spectacle lens (3) in the form of a first virtual image (B1) and the generated second image is presented to the user via the second spectacle lens (4) in the form of a second virtual image (B2); and wherein the first and the second virtual image (B1, B2) are presented to the user such that the images do not together impart a three-dimensional image display.

Description

[0001] Display device with a holder that can be placed on the head of a user

[0002] The present invention relates to a display device having a holding device that can be placed on the head of a user, a first and second image generation module that is fastened to the holding device and generates a first and a second image, and a first and second spectacle lens that is fastened to the holding device, wherein the generated first image is presented to the user via the first spectacle lens as a first virtual image and the generated second image is presented to the user via the second spectacle lens as a second virtual image when the holding device is placed on the head.

[0003] With such display devices, the two virtual images are presented to the user in such a way that a three-dimensional image impression is created. While this is very impressive for the user, it places high demands on the optics and manufacturing tolerances to ensure the desired three-dimensional image impression.

[0004] Based on this, it is the object of the invention to further develop such a display device in such a way that lower demands can be placed on the optics and the manufacturing tolerances.

[0005] The invention is defined in independent claim 1. Advantageous further developments are specified in the dependent claims.

[0006] The display device according to the invention can comprise a holding device that can be placed on the head of a user, a first image generation module fastened to the holding device, which generates a first image, a second image generation module fastened to the holding device, which generates a second image, a first spectacle lens fastened to the holding device, which has a first deflection section, and a second spectacle lens fastened to the holding device, which has a second deflection section. Furthermore, in the display device according to the invention, the generated first image can be deflected at the first deflection section such that the user can perceive it as a first virtual image with a first eye when the holding device is placed on the head.Similarly, the generated second image can be deflected at the second deflection section such that the user, with the holding device placed on the head, can perceive it with a second eye as a second virtual image. According to the invention, the display device can present the first and second virtual images to the user in such a way that, together, they do not provide a three-dimensional image representation for the user.

[0007] Thus, there is no three-dimensional image representation. Instead, different (and preferably non-overlapping) virtual images can be deliberately displayed to the right and left eyes. Similar to a purely monocular case, in which the user is presented with only one image through one of the lenses, the user is not consciously aware of the one-sided display of the images. For the user, the dual monocular design effectively results in a larger field of view (FOV) – twice as large as in the monocular case, when both virtual images are the same size. Since no binocular image impression is to be created, no vergence condition needs to be observed, which makes system design (especially from an optical perspective) much simpler and significantly reduces risks regarding user comfort.

[0008] Presenting the first and second virtual images in such a way that they together do not provide the user with a three-dimensional image representation is understood here in particular to mean that this is achieved by the relative position of the two virtual images to one another, a non-existent vergence condition and / or by the image contents of the two virtual images.

[0009] In the display device according to the invention, the first and second virtual images can be presented to the user at a distance from one another such that a gap exists between them. This particularly means that the displayed contents of the two virtual images do not overlap. However, it is entirely possible for the displayed contents of the two virtual images to partially overlap. In this case, the partial overlap is preferably less than 20%, 15%, 10%, 5%, 4%, 3%, 2%, or 1% of the area of ​​the first and / or second virtual image.

[0010] In the display device according to the invention, both the first image generation module together with the first spectacle lens and the second image generation module with the second spectacle lens can each be designed as a monocular basic system. This is understood here in particular that with the two monocular basic systems the first virtual image for the right eye and the second virtual image for the left eye are presented to the user in such a way that the two virtual images are spaced apart from one another, so that there is a gap between the two images. In particular, different images or image contents can be displayed with the two virtual images. Preferably, the display can be such that the user cannot perceive the two virtual images as just a single image at a certain distance.

[0011] The display device can present or reflect the first and second virtual images to the user at a distance from each other in the horizontal direction. Furthermore, the display device can display or reflect the first and second virtual images to the user at a distance from each other in the vertical direction.

[0012] The display device according to the invention can be designed such that the first and second virtual images are presented in the same focal plane or in different focal planes (which preferably have different distances from the respective eye pupil).

[0013] In the display device according to the invention, the first and / or second generated image can be guided to the deflection section, for example, by at least one reflection in the corresponding spectacle lens. For this purpose, the first spectacle lens can have a first entrance section, a first deflection section spaced therefrom, and a first exit section, and the second spectacle lens can have a second entrance section, a second deflection section spaced therefrom, and a second exit section.Thus, in the display device according to the invention, the generated first image can be coupled into the first spectacle lens via the first entry section, guided in the first spectacle lens by at least one reflection to the first deflection section and decoupled from the first spectacle lens via the first exit section by deflection at the first deflection section in such a way that the user can perceive it as a first virtual image with a first eye when the holding device is placed on the head.In the same way, the generated second image can be coupled into the second spectacle lens via the second entry section, guided in the second spectacle lens by at least one reflection to the second deflection section and decoupled from the second spectacle lens via the second exit section by deflection at the second deflection section in such a way that the user can perceive it as a second virtual image with a second eye when the holding device is placed on the head.

[0014] Instead of such a guide in the first or second spectacle lens, the display device according to the invention can be designed such that the first and / or second generated image is directed (preferably directly) onto the first or second deflection section, respectively, which effects the desired deflection. Such a configuration can be referred to as a free-space combiner. The first deflection section and the second deflection section can effect the desired deflection reflectively, refractively and / or diffractively. Thus, the first deflection section can be designed as a reflective, refractive and / or diffractive deflection section. The same applies to the second deflection section. A diffractive deflection section can, for example, have a surface grating or a volume hologram. Furthermore, a diffractive deflection section can, for example, be designed as a surface grating or as a volume hologram.

[0015] A sensor can be arranged on the holding device which measures the inclination of the holding device, wherein, depending on the measured inclination, either only the first virtual image or only the second virtual image is presented.

[0016] The display device may provide the user with an input interface through which the user may specify to the display device that only the first virtual image or only the second virtual image is displayed.

[0017] The display device can present the first virtual image to the user's right eye and the second virtual image to the user's left eye in such a way that the two images do not overlap. The possible FOV depends on the geometric design of the display device (depending on the user's interpupillary distance, the focal plane of the virtual images, the axis in which the virtual images appear (line of sight, LOS), and the desired orientation of the two virtual images relative to each other).

[0018] In the first and / or second spectacle lens, the deflecting section can have a single reflective deflecting element or several reflective deflecting elements arranged next to one another. With several reflective deflecting elements arranged next to one another, a desired deflecting function and, if appropriate, a certain imaging function of the deflecting section can be realized, for example, in a Fresnel-like manner (this can of course also be realized with a single reflective deflecting element). The reflective deflecting elements can be reflective surface pieces, which can also be referred to as reflective facets. The reflective surface pieces can each be flat. However, it is also possible for the reflective surface pieces themselves to be curved (e.g., spherically or aspherically curved). Similarly, the single reflective deflecting element can be flat or curved (e.g., spherically or aspherically curved).

[0019] The reflectivity of the respective reflective deflection elements (or the only reflective

[0020] The reflectance of the deflection element can, for example, be in the range of 2 - 100% (including the limits of the range) for the respective wavelength or color. Thus, the reflective deflection elements can be partially reflective or reflective.

[0021] The first and / or second spectacle lens may, in particular, have a curved rear side and / or a curved front side. The entrance section may be formed in the rear side.

[0022] The light beams of the corresponding image generation module are preferably guided to the deflection section by one or more reflections (in particular total internal reflections). The one or more reflections or total internal reflections can be caused, for example, at the front and / or back of the first or second spectacle lens. However, it is also possible for at least one of the reflections or total internal reflections to be caused by a layer buried in the first or second spectacle lens, which is spaced apart from the front and back.

[0023] The first or second image generation module can generate a single-color first or second image or a multi-color first or second image.

[0024] The display device may include a control unit that controls the first and second image generation modules. In particular, the control unit may control the first and second image generation modules based on supplied image data.

[0025] The first and / or second image generation module (or the corresponding image generator unit of the respective image generation module) can, in particular, comprise a planar image generator, such as an LCD module, an LCoS module, an OLED module, a pLED, or a tilting mirror array. Each image generator can comprise a plurality of pixels, which can be arranged, for example, in rows and columns. Each image generator can, for example, be self-luminous or non-self-luminous.

[0026] Each imager can preferably produce a monochromatic image, with different imagers producing monochromatic images at different wavelengths.

[0027] The first and / or second image generation module can, for example, comprise a polychromatic imager, a combination of two or more monochromatic imagers, or a combination of a duochromatic imager and a monochromatic imager. Typical configurations of such image generation modules with multiple imagers comprise an overlay unit that overlays the light beams of the multiple imagers into a common light beam. Such an overlay unit can be implemented, for example, as a beam splitter cube (also called an X-cube) or as a so-called rod combiner, which are known to those skilled in the art.

[0028] Since the outcoupling deflection section should be as invisible as possible and also impair the light coming from the surroundings to the viewer's eye as little as possible, deflection sections are generally preferred that have high transmission in the transparent state and thus low reflectivity for the outcoupling light beam of the at least two-color image. Typical values ​​for the ratio of reflection to transmission are 50%, 30%, 10%, or 2%, uniformly across the visible wavelength range.

[0029] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations indicated, but also in other combinations or on their own, without departing from the scope of the present invention.

[0030] The invention is explained in more detail below using exemplary embodiments with reference to the attached drawings, which also disclose features essential to the invention. These exemplary embodiments are for illustrative purposes only and are not to be interpreted as restrictive. For example, a description of an embodiment with a large number of elements or components should not be interpreted to mean that all of these elements or components are necessary for implementation. Rather, other embodiments may also contain alternative elements and components, fewer elements or components, or additional elements or components. Elements or components of different embodiments may be combined with one another unless otherwise stated. Modifications and variations described for one of the embodiments may also be applicable to other embodiments.To avoid repetition, identical or corresponding elements in different figures are designated by the same reference numerals and are not explained more than once. The figures show:

[0031] Fig. 1 is a schematic perspective view of an embodiment of the display device according to the invention;

[0032] Fig. 2 is an enlarged partial sectional view of the first spectacle lens including a schematic representation of the first image generation module;

[0033] Fig. 3 is an enlarged partial sectional view of the second spectacle lens including a schematic representation of the second image generation module;

[0034] Fig. 4 is a diagram illustrating a possible arrangement of the first and second virtual images; Fig. 5 is a schematic diagram of an embodiment of the display device according to the invention;

[0035] Fig. 6-10 representations to explain possible arrangements of the first and second virtual image; and

[0036] Fig. 11 is an enlarged partial sectional view of the first spectacle lens including a schematic representation of the first image generation module according to a further embodiment of the display device according to the invention.

[0037] In the embodiment shown in Fig. 1, the display device 1 according to the invention comprises a holding device 2 which can be placed on the head of a user and which can be designed, for example, in the manner of a conventional spectacle frame, as well as a first and a second pair of spectacle lenses 3, 4 which are fastened to the holding device 2. The holding device 2 with the spectacle lenses 3, 4 can be designed, for example, as sports glasses, sunglasses, and / or glasses for correcting ametropia, wherein a virtual image can be projected into the user's field of vision via the first and second spectacle lenses 3, 4, which can each also be referred to as multifunctional lenses, as described below.

[0038] For this purpose, the display device 1 comprises a first image generation module 5, which can be arranged in the region of the right temple of the holding device 2, and a second image generation module 6, which can be arranged in the region of the left temple of the holding device 2, as shown schematically in Fig. 1.

[0039] The first image generation module 5 can have a first image generator unit 7 for generating a first image, as shown schematically in Fig. 2. For this purpose, the image generator unit 7 comprises a first planar image generation element 8, downstream of which a first image generator optics 9 is arranged. Alternatively, the first image generator optics 9 can be integrated in the first spectacle lens 3 (not shown). The first planar image generation element 8 can have, for example, an OLED element, a pLED, an LCD element, an LCoS element or a tilting mirror matrix, each of which comprises a multiplicity of pixels arranged, for example, in rows and columns. A single light beam L1 is shown schematically as a representative of the light beams emitted by the first planar image generation element 8.

[0040] As can further be seen from Fig. 2, a control unit 10 with, for example, a processor P and a memory M is provided for controlling the first image generation module 5. The control unit 10, which can be arranged, for example, on the holding device 2, controls the first image generation module 5 and in particular the first image generation element 8 as a function of supplied image data such that a first image is generated in accordance with the image data. The light beams L1 emitted by the first image generation element 8 pass through the first imaging optics 9 and then enter the first spectacle lens 3 via a curved rear side 11 of the latter. The region of the entrance on the rear side 11 can also be referred to as the entrance section 12.

[0041] The first spectacle lens 3 further comprises a curved front side 13 and a first deflection section 14 formed buried in the first spectacle lens 3. The first deflection section 14 comprises a first reflective deflection structure 15 with a plurality of first reflective deflection elements 16, which can also be referred to as first reflective facets.

[0042] As already described, the light beams L1 enter the first spectacle lens 3 via the entrance section 12 in the rear side 11. The light beams L1 are then guided in the first spectacle lens 3, e.g. by total internal reflection at the rear side 11 and front side 13, to the first deflection section 14, so that a first light guide channel 17 is present from the entrance section 12 to the first deflection section 14. The first deflection section 14 then deflects the light beams L1 towards the rear side 11 in such a way that the deflected light beams L1 exit the first spectacle lens 3 via the rear side 11. The area through which the light beams L1 exit can also be referred to as the exit section 18.

[0043] The second image generation module 6 can, as shown schematically in Fig. 3, have a second image generator unit 20 for generating a second image. For this purpose, the second image generator unit 20 comprises a second planar image generation element 21, downstream of which a second image generator optics 22 is arranged. The second planar image generation element 21 can, for example, have an OLED element, a pLED, an LCD element, an LCoS element or a tilting mirror matrix, each of which comprises a multiplicity of pixels arranged, for example, in rows and columns. A single light beam L2 is shown schematically as a representative example of the light beams emitted by the second planar image generation element 21.

[0044] As can be further seen from Fig. 3, the control unit 10 is also provided for controlling the second image generation module 6. The control unit 10 controls the second image generation module 6 and in particular the second image generation element 21 as a function of supplied image data such that a second image is generated in accordance with the image data. The light beams L2 emitted by the second image generation element 21 pass through the second imaging optics 22 and then enter the second spectacle lens 4 via a curved rear side 23. The entry region at the rear side 23 can also be referred to as the entry section 24. The second spectacle lens 4 further has a curved front side 25 and a second deflection section 26 buried in the second spectacle lens 4.The second deflection section 26 comprises a second reflective deflection structure 27 with a plurality of second reflective deflection elements 28, which can also be referred to as second reflective facets.

[0045] As already described, the light beams L2 enter the second spectacle lens 4 via the entrance section 24 in the rear side 23. The light beams L2 are then guided in the second spectacle lens 4, e.g. by total internal reflection at the rear side 23 and front side 25, up to the second deflection section 14, so that a second light guide channel 29 is present from the entrance section 24 to the second deflection section 26. The second deflection section 26 then deflects the light beams L2 towards the rear side 23 in such a way that the deflected light beams L2 exit the second spectacle lens 4 via the rear side 23. The area through which the light beams L2 exit can also be referred to as the exit section 30.

[0046] The first image generation module 5 and the first spectacle lens 3 as well as the second image generation module 6 and the second spectacle lens 5 are designed such that a user wearing the display device 1 according to the invention on his head can perceive the first image generated by means of the first image generation module 5 as a first virtual image B1 with his first eye (here the right eye) and the second image generated by means of the second image generation module 6 as a second virtual image B2 with his second eye (here the left eye), as shown schematically in Fig. 4.

[0047] In the display device 1 according to the invention, both the first image generation module 5 together with the first spectacle lens 3 and the second image generation module 6 with the second spectacle lens 5 are each designed as a monocular basic system. This is understood here in particular to mean that with the two monocular basic systems, the first virtual image B1 for the right eye and the second virtual image B2 for the left eye are presented to the user in such a way that the two virtual images B1 and B2 are spaced apart from one another, so that there is a gap between the two images, as schematically shown in Fig. 4. In particular, different images can be displayed with the two virtual images B1 and B2. Preferably, the display is such that the user cannot perceive the two virtual images B1 and B2 as just a single image at a specific distance. There is therefore no three-dimensional image display.Instead, different, non-overlapping virtual images B1 and B2 can be deliberately displayed to the right and left eyes. Similar to a purely monocular case, in which the user is presented with only one image through one of the lenses, the user does not consciously perceive the one-sided display of images B1 and B2. For the user, the dual monocular design effectively results in a larger field of view – twice as large as in the monocular case, when both virtual images B1 and B2 are of equal size. Since no binocular image impression is to be created, no vergence condition needs to be observed, which makes system design (especially from an optical perspective) much simpler and significantly reduces risks related to user comfort.

[0048] A feature of the display device 1 according to the invention can thus be a deliberate separation of the virtual images B1 and B2 presented to the right and left eyes. A deliberate distance should exist between the virtual images B1 and B2, since even an exact abutment of the virtual images B1 and B2 would place very high demands on the tolerances of the display device 1. Unavoidable differences in user physiognomies (head width, interpupillary distance, etc.) between different users also place high demands on the design of the optical system. This can be deliberately avoided by separating the areas in which the two virtual images B1 and B2 are displayed.

[0049] If an overlap of the virtual images B1 and B2 is to be prevented, in the case of a horizontal spacing of the virtual images B1, B2, half the horizontal FOV (horizontal

[0050] FOV = HFOV) must not be larger than:

[0051] 1

[0052] — HFOV < 90° — arc

[0053] 2 where

[0054] VID: distance between the pupil of the eye and the center M1, M2 of the virtual image B1, B2;

[0055] PD: interpupillary distance between both eye pupils; ßi_os: angle between the straight-ahead viewing direction G1, G2 and the direction VID1, VID2 in which the user looks at the center of the virtual image B1, B2.

[0056] This applies to the right and left eye if the focal planes of the two virtual images B1 and B2 are identical.

[0057] However, the focal planes for the two virtual images B1 and B2 presented to the right and left eyes do not necessarily have to be identical. If different planes are intentionally displayed, as schematically shown in Fig. 5 (where the corresponding variables are distinguished by the suffix "1" or "2", such as VID1 and VID2), different VIDs (namely VID1 and VID2) must be set for the right and left eyes.

[0058] Since the two basic monocular systems (first image generation module 5 together with the first spectacle lens 3 on the one hand, and second image generation module 6 with the second spectacle lens 5 on the other hand) are each designed to be monocular, the display device 1 according to the invention can also be configured by a user in such a way that the user can specify, for example via the control unit 10, whether only the first virtual image B1 or only the second virtual image B2 is to be generated and displayed. Normally, every person has a so-called dominant eye. This eye determines the direction which the other eye then follows. The user can therefore select the side of the eye with which they can better perceive the monocular virtual image B1 or B2.

[0059] To select the appropriate monocular base system, a corresponding input interface can be provided by the control module 10 itself or by separate software that can communicate with the control module 10. For example, a corresponding program can be provided that runs on a computer and / or a so-called smartphone.

[0060] In the embodiment described so far, the display device 1 was designed such that the two virtual images B1 and B2 for the left and right eye are at the same horizontal height (seen in the x-direction) and that both virtual images B1, B2 have a constant horizontal extent (in the y-direction). However, it is also possible for the two virtual images B1, B2 not to have a constant horizontal extent, as shown schematically in Fig. 6. Both virtual images B1, B2 each have two different horizontal extents HFOV11, HFOV12, HFOV2i, HFOV22 and are arranged such that they do not overlap. There is always a distance or gap between the two virtual images B1, B2.

[0061] However, it is also possible to align the virtual images B1 and B2 differently vertically, as shown schematically in Fig. 7. With this alignment, the left virtual image B2 is positioned vertically lower than the right virtual image B1. Of course, this can also be reversed.

[0062] For example, the user's head may be tilted horizontally or downwards. This would change the optimal positioning of the virtual image compared to the outside world. The described design therefore allows the data to be displayed higher or lower depending on the usage situation. In particular, a sensor 32 (Fig. 1) can be provided on the display device 1, which measures the orientation of the display device 1 and thus of the user's head and transmits it to the control unit 10, which, depending on this, displays the corresponding data as a first virtual image B1 or as a second virtual image B2.

[0063] In the embodiment of the display device 1 shown schematically in Fig. 7, the two virtual images B1 and B2 are shifted in the vertical direction (x-direction) such that both images B1 and B2 have partially identical vertical values. However, it is also possible for the two virtual images B1 and B2 to not have identical values ​​in the vertical direction, as shown schematically in Fig. 8.

[0064] Furthermore, the two virtual images B1 and B2 can be displayed such that they are spaced apart from each other in the vertical direction, but cover the same viewing angles in the horizontal direction, as shown in Fig. 9. Of course, it would also be possible to arrange the two virtual images B1 and B2 according to Fig. 9 such that they are offset from each other in the horizontal direction.

[0065] Of course, the orientation of images B1 and B2 can also be changed, as shown schematically in Fig. 10. In this case, the aspect ratio (ratio of the extension in the x-direction to the extension in the y-direction) is chosen differently.

[0066] The imaging units 7 and 20 can be configured to generate and output a monochromatic (and thus single-color) image. However, they can also be configured to output a multicolor image.

[0067] Furthermore, it is possible to provide a plurality of image generator units 7, 7' and 7" (Fig. 11 ), which, for example, generate and output a red, green and blue partial image, which is then superimposed by means of a superposition unit 35 (for example a color donor cube) to form a common beam L1, as shown for the first image generation module 5 in Fig. 2. Of course, if desired, the second image generation module 6 can be designed in the same way or only alternatively in the manner described.

[0068] Depending on the reflectivity of the first or second deflection elements 16, 28, the first or second virtual image B1, B2 can be perceived by the user in superimposition with the surroundings. With a very high reflectivity, and in particular with a reflectivity of 100%, the user can only perceive the first or second virtual image B1, B2 and not the surroundings, at least in the area of ​​the first or second deflection section 14, 26, if a certain distance between the first and second deflection elements 16, 28 is not exceeded. If the certain distance between adjacent deflection elements 16 or 28 is exceeded, ambient light can reach the eye unhindered between them, so that even with 100% reflectivity of the deflection elements 16 or 28, a view of the surroundings is possible, resulting in a quasi-perforated / segmented 100% mirror.

Claims

Patent claims 1. A display device comprising a holding device (2) that can be placed on the head of a user, a first image generation module (5) attached to the holding device (2) that generates a first image, a second image generation module (6) attached to the holding device (2) that generates a second image, a first spectacle lens (3) attached to the holding device (2) that has a first deflection section (14), and a second spectacle lens (4) attached to the holding device (2) that has a second deflection section (26), wherein the generated first image is deflected at the first deflection section (14) such that the user, when the holding device (2) is placed on the head, can perceive it with a first eye as a first virtual image (B1), wherein the generated second image is deflected at the second deflection section (26) such thatthat the user can perceive it with a second eye as a second virtual image (B2) when the holding device (2) is placed on the head, and wherein the first and second virtual images (B1, B2) are presented to the user in such a way that together they do not provide the user with a three-dimensional image representation.

2. Display device according to claim 1, wherein the first and second virtual images (B1, B2) are presented to the user at a distance from one another such that there is a gap between them.

3. Display device according to claim 1 or 2, wherein the first and second virtual images (B1, B2) are presented to the user spaced apart from each other in the horizontal direction.

4. Display device according to one of the above claims, wherein the first and second virtual images (B1, B2) are presented to the user spaced apart from one another in the vertical direction.

5. Display device according to claim 4, wherein a sensor (32) is arranged on the holding device (3) which measures the inclination of the holding device (2), wherein, depending on the measured inclination, either only the first virtual image (B1) or only the second virtual image (B2) is presented, 6. Display device according to one of the above claims, wherein the first and second virtual images (B1, B2) are presented in the same focal plane.

7. Display device according to one of claims 1 to 5, wherein the first and second virtual images (B1, B2) are presented in different focal planes.

8. Display device according to one of the above claims, wherein the user specifies via an input interface of the display device to present only the first virtual image (B1) or only the second virtual image (B2).

9. Display device according to one of the above claims, in which the first spectacle lens (3) has a first entry section (12), the first deflection section (14) spaced therefrom, and a first exit section (18), the second spectacle lens (4) has a second entry section (24), the second deflection section (26) spaced therefrom, and a second exit section (30), wherein the generated first image is coupled into the first spectacle lens (3) via the first entry section (12), guided in the first spectacle lens (3) by at least one reflection to the first deflection section (14), and decoupled from the first spectacle lens (3) by deflection at the first deflection section (14) via the first exit section (18) such that the user can perceive it with a first eye as the first virtual image (B1) when the holding device (2) is placed on the head.and wherein the generated second image is coupled into the second spectacle lens (4) via the second entry section (24), guided in the second spectacle lens (4) by at least one reflection to the second deflection section (26) and decoupled from the second spectacle lens (4) by deflection at the second deflection section (26) via the second exit section (30) in such a way that the user can perceive it with a second eye as the second virtual image (B2) when the holding device (2) is placed on the head.

Images