DE102021126980A1 - Stereo glasses, stereo projection system and method for the combined generation and/or viewing of images - Google Patents

Abstract

The invention relates to stereo glasses for a stereo projection system using 3D wavelength multiplex technology (WMT), the stereo glasses (30) having a first lens (2) with a first interference filter and a second lens (2) with a second interference filter has respective spectral transmission and stop bands, the spectral stop bands of one interference filter encompassing the transmission bands of the other interference filter in the visible frequency range, the stereo glasses (30) also being provided with a first and a second imaging device (5), the first imaging device ( 5) arranged to generate a first virtual image on an inner side (7) of the first lens (2), and wherein the second imaging device (5) is arranged to generate a second virtual image on an inner side (7) of the second lens (2) to generate, wherein the spectral blocking bands of the respective interference filters of the first lens (2) and the second lens (2) are designed as reflection bands for the respective virtual images of the first and second imaging devices (5). Furthermore, the invention relates to a stereo projection system and a method for the combined generation and/or viewing of images that are generated using a stereo screen and of virtual images using stereo glasses.

Description

TECHNICAL AREA

The invention relates to stereo glasses for a stereo projection system that works using 3D wavelength-division multiplex technology (WMT), a corresponding stereo projection system, and a method for the combined generation and/or viewing of images.

STATE OF THE ART

Various types of stereo glasses are known from the prior art, which are used to generate a spatial depth effect in the human brain when viewing 3D films or 3D images.

In order to do this, two images, one each for the left and right eye, taken from two different perspectives, are required. These partial perspective images must be perceived simultaneously, but separately for each eye, in order to generate a spatial impression in the brain. In order to bring about a separate perception for each eye, appropriate filters are used so that each eye is only presented with the stereoscopic partial perspective image intended for that eye.

There are various types of stereo glasses fitted with appropriate filters. For example, stereo glasses for anaglyph separated imaging contain a red filter for the left eye and a green filter for the right eye. Other filter colors include, for example, a red filter for the right eye and a cyan filter for the left eye (Deep Vision System), a blue filter for the right eye and a yellow/orange filter for the left eye (ColorCode 3-D), a green filter for the left eye and magenta filter for the right eye, etc.

An almost color-neutral stereo projection system is provided by using interference filter glasses, in which the primary colors of the images for the left and right eye are reduced to different, non-overlapping wavelength ranges.

For this purpose, a technology using interference filter glasses for generating and reproducing optically three-dimensionally perceptible, stereoscopic images is known in the prior art, which is referred to as wavelength-division multiplex technology (WMT). Variants of this wavelength multiplex technology (WMT) are described, for example, in the following intellectual property rights: DE 198 08 264 Al; DE 199 24 167 B4 ; DE 100 05 335 C2 ; DE 100 57 102 B4 ; DE 102 49 815 B4 ; DE 103 59 788 B4 ; EP 2 399 165 A1 ; DE 10 2006 054 713 B4 .

For example, from the DE 10 2006 054 713 B4 a method for generating an optically three-dimensionally perceptible image reproduction is known, which offers good color reproduction and reliable perspective partial image separation. In this case, color filters for the two partial perspective images to be formed are designed in such a way that the number of transmission bands is reduced compared to the known prior art. The number of transmission bands is less than 5, and these 5 or less transmission bands have no mutual overlap. At least one of the transmission bands has an arrangement in the range of two color perceptions from blue (B), green (G) or red (R). The other transmission bands are arranged in the frequency spectrum in such a way that they are arranged in the range of a single color perception, ie blue or green or red. These transmission bands for color perception preferably have a bandwidth in the range of about 30 nm or significantly below, which allows reliable delimitation and arrangement within a range of color perception and reliable delimitation or separation from the other transmission bands. Furthermore, the transmission belts are arranged in such a way that they have a sufficient distance from one another. A particularly natural color perception is generated by the arrangement specified above.

The wavelength multiplex technology explained above for color-true three-dimensional reproduction and perception using appropriate stereo projection systems and stereo glasses is often used in amusement parks, cinemas, museums and many other facilities, with all users or wearers of the stereo glasses being sent the same image content.

The disadvantage here is that there is currently no possibility of providing the various users or wearers of the stereo glasses with user-specific image content at the same time.

On the other hand, virtual reality (VR) headsets are known in the prior art, which allow additional information to be displayed to the user. However, with such VR goggles or headsets it is not possible for the user or wearer of the headset or the goggles to directly obtain visual information from his or her real environment at the same time while he or she is wearing the goggles or the headset.

Furthermore, the so-called augmented reality (AR) glasses or headsets are known in the prior art, which enable the real environment of the user or wearer to be perceived and at the same time can reflect user-related VR content.

However, no stereo glasses system that also has augmented reality functionality is known in the prior art.

DESCRIPTION OF THE INVENTION

The invention is based on the object of providing stereo glasses for a stereo projection system that works using 3D wavelength multiplex technology (WMT), a corresponding stereo projection system and a method for the combined generation or viewing of images, which the user or wearer can use in addition to the viewing of 3D content at the same time provide user-specific content.

The object is achieved according to the invention with stereo glasses which have the features specified in claim 1, a stereo projection system which has the features specified in claim 14, and with a method for the combined generation and/or viewing of images which has the features specified in claim 15 features.

Advantageous configurations of the invention are the subject matter of the dependent claims.

According to the invention, stereo glasses are provided for a stereo projection system that works using 3D wavelength multiplex technology (WMT), the stereo glasses having a first lens with a first interference filter and a second lens with a second interference filter with respective spectral transmission and blocking bands, wherein the spectral stop bands of one interference filter include the transmission bands of the other interference filter in the visible frequency range, and wherein the spectacles are further provided with a first and a second imaging device, the first imaging device being arranged to project a first virtual image on an inner side of the first spectacle lens to generate, and wherein the second imaging device is arranged to generate a second virtual image on an inner side of the second lens, wherein the spectral stop bands of the respective interference filters of the first lens and the second lens as reflection bands for the respective virtual images of the first and second Imaging devices are configured.

Thus, according to the invention, glasses are realized with which a wearer or user of the glasses can on the one hand perceive the outside world including a 3D projection and on the other hand can also be presented with virtual reality content (AR), which can be reflected directly into his field of vision using the imaging devices . The spectacle lenses of the stereo spectacles according to the invention thus act simultaneously as a combiner and as a WMT filter. The imaging devices can be used to provide the user of the stereo glasses with individually user-specific information, while the 3D projection offers the same content for all users. The design of the glasses of the stereo glasses allows them to be used for the left-right separation of the 3D images or videos projected according to the wavelength multiplex method, but at the same time as a combiner for the augmented reality to be presented individually to the user of the stereo glasses (AR) serve.

The imaging devices are opposite the inside of the stereo lenses, i. H. arranged opposite the right or first lens and opposite the left or second lens that they are reflected for the eyes of the wearer or user of the stereo glasses in the respective lenses. The user can thus perceive the real world and the 3D projection as well as virtual images generated by reflection of the imaging devices through the spectacle lenses. Since different images can be displayed by the left and right or first and second imaging devices, the virtual images can also appear stereoscopic. All three "worlds" are superimposed in 3D.

It is furthermore particularly advantageous that the configuration according to the invention of stereo glasses provides color-true images over the entire color spectrum for all three light sources.

In addition, the AR and stereo images provided by the stereo glasses according to the invention are not only particularly true to color but also rich in contrast because the bandwidths of the transmission ranges are selected to be narrow, for example with an average bandwidth of <30 nm.

Furthermore, reliable image separation is achieved by means of the stereo glasses according to the invention in that the stop bands of one interference filter correspond to the transmission bands of the other interference filter.

Overall, the stereo glasses according to the invention thus offer a very pleasant and high-quality image experience for all three light sources for the wearer or user of the stereo glasses.

A further advantage of the stereo glasses according to the invention is that a third party who is standing opposite the wearer of the stereo glasses, for example, cannot see the AR content or AR images recorded on the inside of the glasses. The stereo glasses prevent the AR content from “shine through”, so to speak, since it is reflected on the barrier bands on the inside of the glasses and not transmitted. This results in a further advantage in that only little energy is required to provide a good image with regard to the AR content on the inside of the spectacle lenses.

According to a further preferred embodiment of the invention, the first and the second imaging device are each designed as a display, in particular as a liquid crystal display (LCD).

According to yet another preferred embodiment of the invention, the first and the second imaging device each comprise a projection device.

It is thus possible with the stereo glasses to implement both reflective and transmitting imaging devices, for example depending on the intended use or with regard to the costs of the stereo glasses.

The respective virtual images of the first and second imaging devices are preferably generated exclusively with light beams whose wavelengths lie in the stop bands of the respective stop bands of the associated interference filter. As already explained above, this embodiment is advantageous since the AR content played onto the inside of the spectacle lenses is not visible to third parties who are standing opposite the wearer of the stereo glasses. A “show through” is thus prevented.

Furthermore, the first and the second imaging device can be provided with interference filters whose spectral transmission and stop bands correspond to the spectral transmission and stop bands of the spectacle lenses. This entails a technically simple structure, better handling and the advantages already mentioned above with regard to the quality of the content or images viewed using the stereo glasses, which are particularly color-fast and high-contrast as a result. Furthermore, this also avoids the above-described “shine through” of the AR content played on the inside of the glasses of the stereo glasses.

According to yet another preferred embodiment of the invention, the first and the second spectacle lens are each provided with a curvature, in particular are cylindrical or spherical cap-shaped or spherical segment-shaped. It is noted that the terms “spherical segment-shaped” and “spherical section-shaped” are understood to be equivalent terms.

Due to the curvature, the virtual images or the reflections of the imaging devices on the inside of the spectacle lenses are enlarged, so that the user or wearer of the stereo glasses perceives or can perceive a superimposition of the two images. The advantage of providing the curvature is that it can prevent or at least reduce the problems that occur with the interference filters. For example, the wearer of the glasses does not always look straight ahead, i. H. perpendicular, through the lenses, but can also look towards the edges of the lenses. With such a viewing angle, however, color distortions occur due to the light not falling centrally without the curvature of the lenses, because the layers of the interference filters on the lenses have the same thickness over the surface of the lenses. They are permeable for a certain frequency and block other frequencies, which is related to the passage length for the light through the layers of the interference filter. If the wearer of the stereo glasses looks through the lenses at an angle instead of perpendicularly, the penetration lengths are different and color distortions occur. These can be compensated for or at least reduced by the curved lenses.

As an alternative or in addition to providing the curvature of the lenses, the layer thickness of a coating on the lenses, which can comprise several layers, can be reduced towards the edges in order to compensate for the changed passage length when the light falls at an angle and thus color distortions and image distortions due to the edges compensate.

In addition, it is advantageous if the first imaging device is positioned above the first spectacle lens and the second imaging device is positioned above the second spectacle lens. In particular, the imaging devices can be positioned in such a way that, in combination with the spectacle lenses, they enable good visibility of the mirror images through the eyes of the user or wearer of the stereo glasses. Another advantage is that the distance between the respective imaging device and the eye can thereby be increased, which leads to an improvement in the imaging properties.

The first imaging device and the second imaging device are preferably arranged in or on a frame of the stereo glasses, especially fixed. This enables a compact configuration of the stereo glasses. Fixing the imaging devices on the frame or integrating them into the frame also ensures that the imaging devices are always correctly aligned with the respective inside of the spectacle lenses. In particular, it is advantageous if the imaging devices are arranged on the respective temples of the stereo glasses, which make up part of the frame. This has the advantage that the imaging devices can be exchanged with the bracket if required, for example in the event of a defect. In addition, the distance between the imaging device and the spectacle lens can be varied over the length of the arm, which has the advantage of being able to vary the projection distance. If the largest possible projection distance can be realized, then it is possible to provide simpler and therefore also more cost-effective optics for the imaging device.

Each temple is preferably connected in an articulated manner to the frame carrying the spectacle lenses via a respective hinge. This is particularly easy to maintain, and also enables secure positioning and inexpensive and good production of the stereo glasses.

The alignment of the imaging devices in relation to the spectacle lenses can be provided in such a way that the use of the stereo glasses is possible for different head sizes or eye distances, e.g. it is possible for both adults and children. For this purpose, the stereo glasses are preferably equipped with an adjusting device.

According to a further preferred embodiment of the invention, the interference filters are formed at least partially by coating the first and second spectacle lenses. This is advantageous with regard to production, since this is a simple and safe process, particularly when the spectacle lenses are made of glass.

Another advantage of coated lenses is that they are light and therefore do not make the stereo glasses heavy, so that they are comfortable to wear.

The interference filters can also be at least partially holographically generated interference filters. There are also any combinations, i. H. from coating generated and holographically generated filters.

Holographically generated interference filters are preferably used in conjunction with laser light sources, both on the 3D projection side and on the side of the imaging devices arranged on or in the frame of the stereo glasses. With holographically generated interference filters it is also possible to provide an optical function, e.g. B. a concave mirror function that enlarges the images of the imaging devices.

LED light sources can also be used for the imaging devices.

According to a further preferred embodiment of the invention, the stereo glasses have a transmission behavior of the first and second spectacle lenses designed as interference filters with at least three transmission bands with an average bandwidth of less than 30 nm, with at least one transmission band in each case being arranged in the primary colors red, green and blue , and wherein the wavelength ranges lying between the transmission bands of a spectacle lens are designed as stop bands serving as reflection bands. Three narrow transmission bands are preferably provided in each case. In particular with regard to laser projectors, a narrow-band implementation is advantageous and also important. A 6P laser, for example, conveys a perfect color impression with a very narrow band each for the colors red, green and blue. With such a configuration, high-quality images can be provided that are extremely rich in contrast and true to color. Furthermore, a reliable image separation is realized and a translucent effect of the images or AR content projected onto the inside of the spectacle lenses is efficiently avoided.

According to a further preferred embodiment of the invention, the stereo glasses have a transmission behavior of the first spectacle lens designed as an interference filter with a first spectral transmission band R1 starting from a wavelength between about 460 nm and a wavelength of about 480 nm, a second spectral transmission band R2 starting from a wavelength from about 540 nm to a wavelength of about 560 nm and a third spectral transmission band R3 starting from a wavelength of about 600 nm to a wavelength of about 625 nm, wherein the wavelength ranges in between are stop bands serving as reflection bands, and wherein the Stereo glasses a transmission behavior of the second designed as an interference filter lens with a fourth spectral transmission band L1 starting from a wavelength below 420 nm to a wavelength of about 455 nm runs out, a fifth spectral transmission band L2 out starting from a wavelength of about 487 nm to a wavelength of about 535 nm, a sixth spectral transmission band L3 starting from a wavelength of about 630 nm to a wavelength of about 685 nm and a seventh spectral transmission band L4 starting from a wavelength of about 570 nm up to a wavelength of about 590 nm, the wavelength ranges in between being stop bands serving as reflection bands.

The values or value ranges mentioned above have proven to be particularly advantageous. In addition, stereo glasses of this type can be produced inexpensively as universal glasses, since they can be produced uniformly with the above value ranges for all light sources.

Furthermore, the stereo glasses, which have the transmission bands for the wavelength ranges specified above, provide the wearer of the stereo glasses with an extremely high-contrast and true-color image. In addition, a reliable image separation for the partial images is realized and the AR content, which is projected on the inside of the spectacle lenses, is effectively prevented from "showing through", as already explained above.

Overall, by providing such a transmission behavior of the interference filters of the spectacle lenses, a universally usable, i. H. Stereo glasses that can be used for different light sources are provided.

Furthermore, a stereo projection system is provided according to the invention, comprising at least one stereo image projector or at least one stereo screen for displaying a stereo image on a screen using 3D wavelength multiplex technology (WMT) and stereo glasses with the features described above and the advantages already described.

According to the invention, in addition, a method for the combined generation and / or viewing of images generated by means of a stereo screen or by means of a stereo projection on a screen using a 3D wavelength multiplex technology (WMT) are displayed, and of virtual images by means of stereo glasses, which offer the advantages described above.

• 1 zeigt eine schematische Seitenansicht einer beispielhaften Stereobrille gemäß der Erfindung;
• 2 zeigt eine beispielhafte Filtercharakteristik der beiden Brillengläser einer beispielhaften erfindungsgemäßen Stereobrille beziehungsweise deren Abbildungsvorrichtungen,
• 3 zeigt eine andere beispielhafte Filtercharakteristik der beiden Brillengläser einer beispielhaften erfindungsgemäßen Stereobrille beziehungsweise deren Abbildungsvorrichtungen und
• 4 zeigt ein Systembild für eine beispielhafte Systemanordnung mit der in 1 gezeigten Brille.

The invention is explained below by way of example using preferred exemplary embodiments with reference to the figures. The invention is not limited to these preferred embodiments.

• 1 shows a schematic side view of exemplary stereo glasses according to the invention;
• 2 shows an exemplary filter characteristic of the two lenses of exemplary stereo glasses according to the invention or their imaging devices,
• 3 shows another exemplary filter characteristic of the two spectacle lenses of exemplary stereo spectacles according to the invention or their imaging devices and
• 4 shows a system image for an exemplary system arrangement with the in 1 glasses shown.

1 shows a schematic side view of an exemplary stereo glasses 30 according to the invention, which makes it possible to perceive a 3D projection on the one hand and virtual reality content on the other hand while using or while wearing the stereo glasses 30. The stereo glasses 30 shown here are designed in such a way that their glasses, which are identified here by the reference number 2, are used for left-right separation of possibly moving 3D images projected according to the wavelength multiplex method and at the same time as a combiner for the augmented Reality can be used. In principle, the spectacle lenses 2 equipped with interference filters can match the above in connection with the 2 until 3 described embodiments, ie the stereo glasses 30 can have glasses 2 whose interference filters are designed for viewing images from a special light source, for example a stereo projector, using the wavelength multiplex method (see 2 ), or glasses 2, whose interference filters are designed for the universal viewing of images from different light sources, for example a stereo projector according to the wavelength multiplex method (see 3 ).

As in 1 can be seen, the spectacle lenses 2 have a curvature, so that they are each designed essentially as a spherical cap. The light 3 originating from the environment or the outside world, which in particular comes from a projection surface (see 4 ) may originate passes through the respective left and right lenses 2 and then hits the human left and right eyes 1 of the user wearing the stereo glasses 30, so that the wearer recognizes a three-dimensional image or video. Furthermore, on the stereo glasses 30 are two imaging devices 5, for example a first imaging device 5 for an image to be viewed through the right eye 1 of the user and a second imaging device 5 for an image through the left eye 1 of the user viewing image provided. The imaging devices 5 can be designed, for example, as a liquid crystal display, LCD, or as a projector. Furthermore, the respective imaging devices 5 are arranged essentially above the respective eye 1 of the user or wearer of the stereo glasses 30 between the temples 6 of the stereo glasses 30 . That is, the first imaging device 5 is arranged above the user's right eye 1 and the second imaging device is arranged above the user's left eye 1 . The respective imaging devices 5 can be provided or fixed on or in the frame of the stereo glasses 30 . In the embodiment shown here, the imaging devices 5 are arranged on the respective brackets 6 , which are also part of the frame 9 . As can be seen here, each of the two temples 6 is connected in an articulated manner via a hinge 8 to the front frame 9 carrying the spectacle lenses 2 , which makes the stereo spectacles 30 particularly easy to maintain with regard to the imaging devices 5 . If these are defective or require maintenance, they can be easily separated from the frame 9 with the bracket 6 and then reattached to it. In addition, the brackets 6 offer the possibility of changing the position of the respective imaging device 5 over the length of the bracket 6 . As already explained above, with a greater projection distance, ie the distance between the imaging device 5 and the inside of the spectacle lens 2, it is possible to use simpler and therefore also more cost-effective optics for the imaging device.

The right imaging device 5 is provided to generate a first virtual image on the inside 7 of the first or right spectacle lens 2 and the second imaging device 5 to generate a second virtual image on the inside 7 of the second or left spectacle lens 2 . The spectral blocking bands of the respective interference filters of the first spectacle lens and the second spectacle lens are designed as reflection bands for the respective virtual images of the first and second imaging devices, so that the wearer of the stereo glasses 30 can see the transmitted 3D image on the one hand and the reflected virtual image on the other . The virtual images are enlarged by the curvature of the respective spectacle lenses 2, so that the wearer or user of the stereo glasses 30 perceives a superimposition of the two images.

Stereo glasses 30 are thus implemented, with which a wearer or user of the glasses 30 can, on the one hand, perceive the outside world including a 3D projection (stereo image information) and, on the other hand, can also be presented with virtual reality content (AR) that is projected directly into his field of vision using the Imaging devices 5 can be reflected. The spectacle lenses 2 of the stereo spectacles 30 according to the invention thus act simultaneously as a combiner and as a WMT filter. The imaging devices 5 can provide the user of the stereo glasses 30 with individually user-specific information, while the 3D projection offers the same content for all users. The design of the lenses 2 of the stereo glasses 30 allows them to be used for the left-right separation of the stereo images or stereo videos projected according to the wavelength multiplex method, but at the same time as a combiner for the augmented to be presented individually to the user of the stereo glasses 30 Reality (AR) serve. The real world, that is to say the concrete and objective surroundings, can still be perceived in full color through these stereo glasses 30 .

The imaging devices 5 are opposite the inside 7 of the stereo glasses 2, d. H. arranged opposite the right or first lens 2 and opposite the left or second lens 2 so that they are reflected in the respective lenses 2 for the eyes 1 of the wearer or user of the stereo glasses 30 . The user can thus perceive the real world and the stereo image projection as well as virtual images (AR) generated by reflection of the imaging devices 5 through the spectacle lenses 2 . Since different images (AR) can be displayed by the left and right or first and second imaging devices 5, the virtual images (AR) can also appear stereoscopic. All three “worlds” from the real world, the projected stereo images and the virtual images (AR) generated with the aid of the imaging devices 5, are superimposed here, and that in particular in 3D.

It is also particularly advantageous that this configuration of stereo glasses 30 according to the invention provides color-true images over the entire color spectrum for all three “worlds”. The wearer or user of the stereo glasses 30 has a very pleasant and high-quality image perception.

Furthermore, reliable image separation is realized by means of the stereo glasses 30 according to the invention in that the stop bands of one interference filter of one spectacle lens 2 correspond to the transmission bands of the other interference filter of the other spectacle lens 2 .

A further advantage of these stereo glasses 30 is that a third party who is standing opposite the wearer of the stereo glasses 30, for example, cannot see the AR content or AR images played on the inside 7 of the glasses 2 . The stereo glasses 30 thus prevent the AR content from “shine through”, so to speak, since these are attached to the blocking bands the inside 7 of the lenses 2 are completely reflected and not transmitted. This results in a further advantage in that only little energy is required to provide a good image with regard to the AR content on the inside 7 of the spectacle lenses 2 .

2 shows an exemplary filter characteristic of the two interference filter units 13a, 13b of the stereo projection system of 4 or the interference filter of the spectacle lenses 2 of a pair of stereo glasses 30 1 an exemplary stereo projection system in which a total of 5 transmission bands L21, L22, L23, R21 and R22 are implemented. The transmission bands L21, L22 and R21 are implemented as narrow-band transmission bands in the blue perception range (L21 and R21) and in the green perception range (L22). These show a bandwidth of about 25 nm. L21 shows an average half-width in the range from 425 to 450 nm, R21 a bandwidth from 460 to 485 nm as half-width and in the green perception range the transmission band L22 shows a half-width from 500 to 525 nm.

Only the transmission band R22 is not located in a single color perception area of the eye. Rather, it contains parts of the red and green perception range and extends over a wavelength range from 535 to 626 nm. Separate and spaced apart from this, the transmission band L23 extends from a wavelength of 635 to over 690 nm and thus represents an open band.

The two transmission bands R21 and R22 are assigned to one perspective partial image for the right eye, while the other three transmission bands L21, L22 and L23 are assigned to the other perspective partial image and thus to the left eye.

The filter characteristic shows a reduced number of transmission bands and, in addition, a reduced number of steep edges or flanks. The number of transmission bands is reduced to a total of 5, while the number of steep edges is reduced to a total of 9. With this configuration, good color characteristics and increased brightness can be provided.

3 shows a schematic overview of the spectral intensity curves of various light sources that can be used for an exemplary further stereo projection system designed according to the wavelength multiplex method (WMT) and the corresponding transmission properties of the stereo glasses compatible with these display devices with appropriately designed interference filters.

The stereo glasses 30 described here can be used universally for different spectra of different projectors with different light sources. There are in the prior art working according to the WMT stereo projection system with differently designed light sources, such. B. 6P laser sources, laser phosphor light sources, LED light sources, high-pressure mercury vapor lamps or equipped with xenon light sources. The universally usable or uniform stereo glasses 30 for viewing the stereoscopic color images with the filter characteristics 3 has for this purpose different optical interference filters as spectacle lenses 2 for each field, which are designed in such a way that there are selective transmission and blocking areas for each field, which correspond to the associated complementary spectral bands (R1, R2, R3; L1, L2, L3, L4) of the different playback devices.

It is noted that with regard to the blocking areas, a blocking of 99% of the light is sufficient, since a small amount of residual light is not disturbing.

A first optical filter and thus the first spectacle lens 2 of the stereo glasses 30 for a first field has a first transmission band R1, which extends from a wavelength of approximately between 458.0 ... 462.3 nm to a wavelength of approximately between 477 6 ... 482.4 nm, in particular between about 460 nm and a wavelength of about 480 nm.

A second transmission band R2 extends from a wavelength of approximately between 537.5 to 542.7 nm to a wavelength of approximately between 559.2 to 564.8 nm, in particular between approximately 540 nm to a wavelength of approximately 560 nm. A third transmission band R3 extends, starting from a wavelength between approximately 595.0 ... 601.0 nm up to a wavelength between approximately 620.9 ... 626.5 nm, in particular between approximately 600 nm up to a wavelength of about 625 nm. This means that all other spectral ranges are largely suppressed.

The second optical filter and thus the other spectacle lens 2 of the stereo glasses 30 for the second field has at least four transmission bands (L1, L2, L3, L4) complementary to the three transmission bands (R1, R2, R3) of the first filter, which are are arranged for the first field suppressed spectral ranges.

The complementary transmission bands (L1, L2, L3, L4) of the second optical filter, ie of the second spectacle lens 2, encompass the spectral ranges suppressed for the first field such that the fourth transmission band L1 runs from a wavelength of 422.1 nm or less to a wavelength of approximately between 453.7 ... 458.0 nm, in particular from a wavelength below 420 nm to a wavelength of approximately 455 nm .

A fifth transmission band L2 extends from a wavelength of approximately 485.6 to 490.4 nm to a wavelength of approximately 532.3 to 537.5 nm, in particular from a wavelength of approximately 487 nm to one Wavelength of about 535 nm.

A sixth transmission band L3 extends, starting from a wavelength between approximately 626.5 .

A seventh transmission band L4 extends from a wavelength of approximately 568.1 to 573.9 nm to a wavelength of approximately 587.0 to 593.0 nm, in particular from a wavelength of approximately 570 nm to one Wavelength of about 590 nm.

The transmission bands R1, R2, R3 of the stereo glasses 30 assigned to the right-hand half-image capture both the emission lines in the spectral ranges C1... .C3, as well as the corresponding emission lines of a 6-laser light source. Likewise, the complementary transmission bands L1, L2, L3, L4 of the stereo glasses 30 capture both the emission components typically associated with the left field in the spectral ranges D1...D4 of the UHP and laser-phosphor light source, as well as the corresponding emission lines of a 6- laser light source.

The exemplary stereo projection system for the reproduction and viewing of stereoscopic color images thus shows stereo glasses 30 with a transmission behavior of the two spectacle lenses 2 designed as interference filters with a first spectral transmission band R1 starting from a wavelength between about 460 nm up to a wavelength of about 480 nm and a second spectral transmission band R2 starting from a wavelength of about 540 nm to a wavelength of about 560 nm and a third spectral transmission band R3 starting from a wavelength of about 600 nm to a wavelength of about 625 nm, a spectral transmission band L2 starting from a wavelength from about 487 nm to a wavelength of about 535 nm, a spectral transmission band L3 from a wavelength of about 630 nm to a wavelength of about 685 nm, and a spectral transmission band L4 from a wavelength of about 570 nm to a Wavelength of about 590 nm. The reproduction devices of the stereo projection system can be provided with different light sources, which include at least UHP light sources, LED light sources, laser light sources, xenon light sources and/or laser phosphor light sources.

4 shows a system image for an exemplary arrangement of a stereo projection system with stereo glasses 30, for example with the 1 stereo glasses 30 shown. The stereo projector 10 projects the image data fed to it onto a screen 20 by converting the stereo image data into perspective partial images in the stereo projector 10 and projecting them onto the screen 20 . The two separate partial perspective images together represent the stereo image or the three-dimensionally perceptible image. This is perceived by the user or wearer who wears stereo glasses 30 . With the aid of the stereo glasses 30 and the spectacle lenses arranged therein, the two partial perspective images are separated from one another and supplied to the left or right eye of the wearer in a differentiated manner. The wearer thus perceives the two stereoscopically differentiated partial perspective images and in this way has the perception of a three-dimensional structure.

The stereo projector 10 has all the important components for projecting the partial perspective images and an integrated color correction circuit 15 in one housing. A light source 11 in the form of a short-arc lamp is implemented for each partial perspective image, the emitted light of which is fed to an imaging unit 12, which is implemented as an LCD chip. The imaging unit 12 is controlled with the stereo image data or with the partial perspective image data assigned to it in such a way that the desired partial perspective image is generated from the broadband light supplied to it from the light source 11 and fed to the projection optics 14 and then to the screen 20 .

The stereo projector 10 also has an additional interference filter unit 13a and 13b for each partial perspective image. The arrangement of the interference filter unit 13a between the light source 11 and the imaging unit 12 creates a very robust and compact unit, while the alternative arrangement of the interference filter unit 13b in front of the projection optics 14 represents a very flexible arrangement.

The color correction circuit 15 integrated in the stereo projector 10 is connected to the image data source (not shown) for the stereo image data and corrects the stereo image data fed to it, in particular with regard to color and brightness, such that the through the selection of the transmission bands (passbands) of the interference filter units 13a, 13b Color shifts can be reduced or largely eliminated. In addition, the color correction circuit ensures that the differences in brightness and other color distortions due to the different transmission properties due to the different transmission bands of the various interference filter units 13a and 13b for the various partial perspective images are largely or completely corrected. Disturbances due to the projection optics 14 used or the light sources 11 are additionally corrected in the process. This makes it possible to project a very balanced, color-neutral stereo image that allows the user or wearer to view it very comfortably and thus reliably generates a three-dimensional perception.

In the example shown here, the interference filter units 13a, 13b are each Fabry-Perot interference filters, each of which has a filter characteristic that is orthogonal to one another.

Stereo glasses 30 and a stereo projection system are thus implemented, with which a wearer or user of the glasses 30 can, on the one hand, perceive the outside world including a stereo projection using the wavelength multiplex method (WMT) and, on the other hand, also present virtual reality content (AR) at the same time can get, which can be reflected directly into his field of vision by means of the imaging devices 5 and the eye 1 of the wearer or user of the glasses 30 . The spectacle lenses 2 of the stereo spectacles 30 according to the invention thus act simultaneously as a combiner and as a WMT filter. Consequently, image information from all three "worlds" can be perceived by the wearer or user with the aid of the stereo glasses 30 and this with very color-true images over the visible color spectrum.

The wearer or user of the stereo glasses 30 has a very pleasant and high-quality image perception. In addition, reliable image separation of the stereo image data is guaranteed.

Reference List

1

eye of the user

2

glasses

3

light from the outside world

4

Light from the imaging device

5

imaging device

6

eyeglass temples

7

inside of the glasses

8th

Bracket joint / hinge

9

Frame

10

stereo projector

11

light source

12

imaging unit

13a, 13b

interference filter units

14

projection optics

15

color correction circuit

20

umbrella

30

stereo glasses

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of 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 19808264 [0006]
• DE 19924167 B4 [0006]
• DE 10005335 C2 [0006]
• DE 10057102 B4 [0006]
• DE 10249815 B4 [0006]
• DE 10359788 B4 [0006]
• EP 2399165 A1 [0006]
• DE 102006054713 B4 [0006, 0007]

Claims (15)

Stereo glasses (30) for a stereo projection system using 3D wavelength division multiplex technology (WMT), the stereo glasses (30) having a first lens (2) with a first interference filter and a second lens (2) with a second interference filter with respective spectral transmissions - Has and stop bands, the spectral stop bands of one interference filter encompassing the transmission bands of the other interference filter in the visible frequency range, characterized in that the stereo glasses (30) are further provided with a first and a second imaging device (5), the first imaging device ( 5) arranged to generate a first virtual image on an inner side (7) of the first lens (2), and wherein the second imaging device (5) is arranged to generate a second virtual image on an inner side (7) of the second lens (2) to generate, wherein the spectral blocking bands of the respective interference filters of the first lens (2) and the second lens (2) are designed as reflection bands for the respective virtual images of the first and second imaging devices (5). Stereo glasses (30) according to claim 1 , characterized in that the first and the second imaging device (5) are each designed as a display, in particular as a liquid crystal display (LCD). Stereo glasses (30) according to claim 1 , characterized in that the first and the second imaging device (5) each comprise a projection device. Stereo glasses (30) according to one of the preceding claims, characterized in that the respective virtual images of the first and second imaging device (5) are generated with light beams whose wavelengths lie in the stop bands of the respective stop bands of the associated interference filter. Stereo glasses (30) according to one of the preceding claims in particular claim 4 , characterized in that the first and the second imaging device (5) are provided with interference filters whose spectral transmission and stop bands correspond to the spectral transmission and stop bands of the spectacle lenses (2). Stereo spectacles (30) according to one of the preceding claims, characterized in that the first and the second spectacle lens (2) are each provided with a curvature, in particular are cylindrical or spherical cap-shaped. Stereo glasses (30) according to one of the preceding claims, characterized in that the first imaging device (5) is positioned above the first spectacle lens (2) and the second imaging device (5) is positioned above the second spectacle lens (2). Stereo glasses (30) according to one of the preceding claims in particular claim 7 , characterized in that the first imaging device (5) and the second imaging device (5) in or on a frame (9) of the stereo glasses (30), in particular in or on the temples (6) of the frame (9) of the stereo glasses (30) arranged, in particular fixed, are. Stereo glasses (30) according to one of the preceding claims, characterized in that the interference filters are formed at least partially by coating the first and second glasses (2). Stereo glasses (30) according to one of the preceding claims, characterized in that the interference filters are at least partially holographically produced interference filters. Stereo glasses (30) according to one of the preceding claims, characterized in that the stereo glasses have a transmission behavior of the first and the second spectacle lens (2) designed as an interference filter with at least three transmission bands with a mean bandwidth of less than 30 nm, with at least one transmission band in each case is arranged in the primary colors red, green and blue and wherein the wavelength ranges lying between the transmission bands of a spectacle lens (2) are designed as stop bands serving as reflection bands. Stereo glasses (30) according to one of the preceding Claims 1 until 11 , characterized in that the stereo glasses have a transmission behavior of the first spectacle lens (2) designed as an interference filter with a first spectral transmission band R1 starting from a wavelength between about 460 nm and a wavelength of about 480 nm, a second spectral transmission band R2 starting from a wavelength from about 540 nm to a wavelength of about 560 nm and a third spectral transmission band R3 starting from a wavelength of about 600 nm to a wavelength of about 625 nm, the wavelength ranges in between being stop bands serving as reflection bands, and that the stereo glasses have a transmission behavior of the second spectacle lens (2) designed as an interference filter with a fourth spectral transmission band L1 starting from a wavelength below 420 nm up to a wavelength of about 455 nm, a fifth spectral transmission band L2 starting from a wavelength of about 487 nm up to a wavelength of about 535 nm, a sixth spectral transmission band L3 from a wavelength of about 630 nm to a wavelength of about 685 nm and a seventh spectral transmission band L4 from a wavelength of about 570 nm to a wavelength of about 590 nm, the wavelength ranges in between being stop bands serving as reflection bands. Stereo glasses according to one of the preceding claims, characterized in that the stereo glasses (30) have an adjustment device. Stereo projection system comprising a stereo image projector (10) or a stereo screen for displaying a stereo image on a screen (20) using 3D wavelength multiplex technology (WMT) and stereo glasses (30) according to one of the preceding claims. Method for the combined generation and/or viewing of images generated by means of a stereo screen or by means of a stereo projection on a screen (20) using 3D wavelength-division multiplex technology (WMT), and of virtual images using a stereo glasses (30) according to one of Claims 1 until 13 .

Images