DE202023105283U1 - Glasses, stereo glasses, projection system and stereo projection system - Google Patents

Abstract

Glasses (10) with a first spectacle lens (1a) with a first interference filter and with a second spectacle lens (1b) with a second interference filter with respective spectral transmission bands (BL,BR,GL,GR,RL,RR) and stop bands,
characterized,
that the spectacle lenses (1a, 1b) designed as interference filters are designed with at least three transmission bands (BL, BR, GL, GR, RL, RR) with an average bandwidth of less than or equal to 25 nm, with at least one transmission band in the primary colors red , green and blue is arranged,
that the lenses (1a, 1b) are designed as mineral interference filters
and that the lenses (1a, 1b) are curved and have a radius of curvature in the range of 100 mm.

Description

TECHNICAL FIELD

The invention relates to glasses, in particular stereo glasses for a stereo projection system operating using 3D wavelength division multiplex technology (WMT), as well as a corresponding projection system or stereo projection system.

STATE OF THE ART

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

To achieve this, two images are needed, one for the left and one for the right eye, taken from two different perspectives. These partial perspective images must be perceived simultaneously but separately by each eye in order to generate a spatial impression in the brain. In order to achieve 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 different types of stereo glasses 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 right eye filter and a cyan left eye filter (Deep Vision System), a blue right eye filter and a yellow/orange left eye filter (ColorCode 3-D), one green filter for the left eye and a magenta filter for the right eye, etc.

An almost color-neutral stereo projection system is provided through the use of interference filter glasses, in which the primary colors of the images for the left and right eyes 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 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 Al; 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. Here, color filters for the two partial perspective images to be formed are designed in such a way that the number of transmission bands is numerically reduced compared to the known prior art. The number of transmission bands is less than 5, these 5 or fewer transmission bands having no mutual overlap. At least one of the transmission bands has an arrangement in the range of two color perceptions of 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, i.e. blue or green or red. These transmission bands for color perception preferably have a bandwidth in the range of approximately 30 nm or significantly less, which enables a secure delimitation and arrangement within a color perception range and a secure demarcation or separation from the other transmission bands. Furthermore, the transmission bands are arranged in such a way that they are at a sufficient distance from one another. The above arrangement creates a particularly natural color sensation.

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

The disadvantage here is that although these glasses have considerable contrast, increased contrast reproduction is desirable.

DESCRIPTION OF THE INVENTION

The invention is based on the object of providing glasses, in particular stereo glasses, for a stereo projection system operating using 3D wavelength multiplex technology (WMT) and a corresponding stereo projection system, which provides the user or wearer with a very high-contrast representation of the environment Exercise that reproduced image information may contain.

The object is achieved according to the invention with glasses which have the features specified in claim 1, with a projection system which has the features specified in claim 12, and solved with a stereo projection system which has the features specified in claim 13.

Advantageous embodiments of the invention are the subject of the subclaims.

The glasses according to the invention are provided with a first lens with a first interference filter and with a second lens with a second interference filter, the interference filters each showing spectral transmission and stop bands. The spectacle lenses designed as interference filters are provided with at least three transmission bands with an average bandwidth of less than or equal to 25 nm, with at least one transmission band being arranged in the primary colors red, green and blue.

These extremely narrow transmission bands are accompanied by correspondingly large, wide blocking bands, which means that extensive frequency ranges of the ambient light are blocked when penetrating the lenses, resulting in a high-contrast impression for the user of these glasses. If there is an image projector in the visible environment for projection on a screen and/or a screen for displaying a 2D image, in which a 2D image is generated using laser light sources or other corresponding narrow-band light sources and in which the light of the very narrow-band light sources fall into a respective transmission band of the glasses, it is particularly possible to use the glasses to create a harmonious, colorful and very high-contrast impression for the user of the glasses. By extensively suppressing ambient light using the wide and pronounced stop bands, it is possible to limit the disruptive influence of this suppressed ambient light without suppressing the generated 2D images in any way. This means that the perception of the 2D images can be realized in a particularly high-contrast and color-fast manner. This design of the glasses is therefore particularly suitable in an environment with such a projection system. Such projection systems are used, among other things, in amusement parks. The same applies to analog applications in stereo projection systems that work using 3D wavelength multiplex technology (WMT).

The spectacle lenses are formed as mineral interference filters and therefore typically with metal oxides, with spectacle lenses in particular being designed with a support made of mineral glass and being curved with a radius of curvature in the range of 100 mm. The mineral interference filter on a mineral glass carrier creates a very robust and stable lens whose optical and mechanical properties complement each other very harmoniously. In addition to a carrier made of mineral glass, plastic carriers have proven successful for the lenses.

The first and second spectacle lenses are each provided with a curvature, which is in particular cylindrical or spherical cap-shaped or spherical section-shaped. This leads to a spherical curvature of the lenses. It is noted that the terms “spherical cap-shaped” and “spherical section-shaped” are understood to be equivalent terms.

An advantage of providing the curvature is that the problems that occur with the interference filters can be prevented or at least reduced. For example, the wearer of the glasses does not always look straight ahead, i.e. vertically, through the lenses, but can also look towards the edges of the lenses. However, with such an oblique viewing angle, color distortions occur due to the non-central incident light without the curvature of the lenses, because the layers of the interference filters on the lenses have the same or essentially the same thickness over the surface of the lenses. They are transparent to certain frequencies or wavelengths and block other frequencies or wavelengths, which is related to the passage length for the light through the layers of the interference filters. If the wearer of the stereo glasses looks through the lenses at an angle instead of perpendicularly, then different passage lengths result and color distortions occur.

These color distortions are based in particular on a shift in the transmission bands of the lenses. These can be compensated for or at least reduced by the curved lenses.

This interaction of narrow-band transmission bands and curved mineral lenses makes it possible to achieve a good, particularly harmonious and colorful impression for the user of the glasses, which also proves to be very high-contrast. This is precisely due to the narrow transmission bands with the extensive ones in between Barrier bands are achieved without compromising the harmonious color impression. In addition, the image through the glasses is characterized by a low directional dependence, which leads to a very pleasant perception of the surroundings through the glasses. This low directional dependence is achieved precisely because the angle of incidence of the light on the lenses and thus on the interference filters is perpendicular or almost perpendicular and thus the deviation from the vertical is limited, so that the deviation has only a slight negative influence on the transmission of the light and the harmonic Color impression with high contrast can only have a small negative influence.

A particularly advantageous development of the glasses is characterized in that the glasses designed as interference filters are provided with at least three transmission bands with an average bandwidth of less than or equal to 15 nm, with at least one transmission band being arranged in the primary colors red, green and blue. This makes it possible, on the one hand, to achieve a particularly strong suppression of stray light caused by unwanted ambient light and, on the other hand, to enable an extremely high-contrast, harmonious and colorful impression for the user of the glasses in the context of a projection system according to the invention for 2D images or stereo projection system.

A special development of the invention shows stereo glasses for a stereo projection system operating 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 stop bands has, wherein the spectral stop bands of one interference filter include the transmission bands of the other interference filter in the visible frequency range. These stereo glasses prove to be particularly advantageous, especially when generating a 3D image using laser light sources or other corresponding narrow-band light sources in a stereo projection system that works using 3D wavelength multiplex technology (WMT). The design of the lenses of the stereo glasses allows them to be used for left-right separation of the 3D images or videos projected using the wavelength multiplex process, without creating a harmonious, colorful and very high-contrast impression for the user of the glasses neglect.

A particularly advantageous development of the glasses is characterized by the fact that the lenses have a radius of curvature between 90 and 120 mm. This choice of the radius of curvature, in particular for the entire spectacle lenses, makes it possible to keep the directional dependence of the incident light on the spectacles particularly low. With these radii of curvature, it is possible to keep the angle of incidence of the light on the lenses and thus on the interference filters vertical or almost vertical and thus significantly limit the annoying deviation from the vertical, so that a harmonious color impression with high contrast can be achieved.

A particularly advantageous development of the glasses is characterized by the fact that the bandwidth of the transmission bands of a lens increases with increasing wavelength. This makes it possible to achieve a particularly harmonious color impression with high contrast. In particular, different sensitivities in color perception are compensated for, especially when the light falls at an angle.

A particularly advantageous development of the glasses is characterized by the fact that the average bandwidths of the transmission band in the basic color red are at least 10 nm wider than the average bandwidths of the transmission band in the basic color blue. This makes it possible to achieve a particularly harmonious color impression with high contrast to a particularly pronounced extent. In particular, different sensitivities in color perception are compensated for, especially when the light falls at an angle.

A particularly advantageous development of the glasses is characterized by the fact that the glasses are designed in such a way that the distance between the glasses and the eyeball with the eye lens is in the range between 20 and 30 mm. This allows the deviation between the focal point of the lenses and the center of the eyeball to be kept small and thus the risk or the degree of distortion in the harmonious color perception and contrast can be kept low.

A particularly advantageous development of the glasses is characterized in that the interference filters are at least partially formed by coating the first and second glasses lenses. Through this development, the interference filters and thus the glasses can be implemented particularly easily and efficiently or cost-effectively.

A particularly advantageous development of the glasses is characterized by the fact that the coatings of the interference filters of the glasses have different layer thicknesses depending on the position on the glasses, whereby the Layer thickness in the edge area of the lens is greater than in the central area of the lens. In addition to providing the curvature of the spectacle lenses, an increase in the layer thickness of a coating of the spectacle lenses, which can comprise several layers, is also realized towards the edges in order to accommodate the changed passage length when the light falls at an angle and thus color distortions and image distortions due to the oblique passage through the spectacle lenses respectively to compensate at least partially through the interference filters on the edges of the lenses and thereby enable a particularly harmonious color perception with high contrast.

A particularly advantageous development of the glasses is characterized by the fact that the layer thicknesses remain the same or increase, in particular steadily, from the central area to the edge. These layer thicknesses, which vary evenly depending on the direction of passage of the light, make it particularly possible to achieve a uniformly changed passage length when the light falls at an angle and thus color distortions and image distortions due to the oblique passage through the lenses or through the interference filters on the edges of the lenses are particularly uniform and to reduce harmoniously and thereby enable a particularly harmonious color perception with high contrast.

A particularly advantageous development of the glasses is characterized in that the glasses are held by a frame that at least partially blocks the incidence of light that does not shine through the glasses into the eye of the user of the glasses. This is preferably achieved in that the temples of the glasses are designed to be flat and limit the incidence of stray light from the side, or that the frame around the lenses is wide and extends in the direction of the wearer's face and prevents the incidence of stray light from above or from limited at the bottom or the bridge between the lenses is widened so that the incidence of stray light in the area of the bridge is limited. The reduced stray light enables improved color perception and improved contrast.

Furthermore, according to the invention, a projection system is provided which has at least one image projector and / or at least one screen for displaying a 2D image on a screen using laser light sources or other corresponding narrow-band light sources and at least one pair of glasses according to the invention with the features described above and the advantages already described includes. These glasses prove to be particularly advantageous when generating a 2D image using laser light sources or other corresponding narrow-band light sources, whose light falls into a respective transmission band of the lenses. This design of the lenses of the glasses as part of the projection system enables a harmonious and colorful and very high-contrast color impression for the user of the glasses.

Furthermore, according to the invention, a stereo projection system is provided, comprising at least one stereo image projector and / or at least one stereo screen for displaying a stereo image on a screen using 3D wavelength multiplex technology (WMT) and at least one pair of stereo glasses according to the invention with the above described features and the advantages already described. These stereo glasses prove to be particularly advantageous, especially when generating a 3D image using laser light sources or other corresponding narrow-band light sources in a stereo projection system that works using 3D wavelength multiplex technology (WMT). This design of the lenses of the stereo glasses allows them to be used for left-right separation of the 3D images or videos projected using the wavelength multiplex process, without neglecting the harmonious and colorful and very high-contrast color impression for the user of the glasses .

A particularly advantageous development of the projection system or the stereo projection system is characterized in that the light sources of the image projector or the screen or the stereo image projector or the stereo screen represent laser light sources or corresponding other narrow-band light sources with an average bandwidth of a few nm , whose light falls into a respective transmission band of the lenses. This is preferably done for all transmission bands in the area of the lower edge of the respective transmission band. This makes it possible to compensate for shifts in the transmission bands of the lenses in the direction of shorter wavelengths when the interference filters of the lenses are irradiated at different angles and greatly increases the possibility of perceiving images from the image projector or the screen or the stereo image projector or the stereo screen to ensure safe. This means that color distortions can be largely prevented and a harmonious, colorful and very high-contrast color impression can be achieved for the user of the projection system or stereo projection system.

• 1 zeigt eine schematische Darstellung einer beispielhaften Brille beziehungsweise Stereobrille im Zusammenhang mit den Augen eines Nutzers und damit im angezogenen Zustand gemäß der Erfindung;
• 2 zeigt eine schematische Darstellung einer beispielhaften Brille in einer Seitenansicht
• 3 zeigt in einer schematischen Darstellung eine beispielhafte Filtercharakteristik der beiden Brillengläser einer beispielhaften, erfindungsgemäßen Stereobrille beziehungsweise deren Abbildungsvorrichtungen.

The invention is described below with reference to preferred exemplary embodiments reference to the illustrations is explained as an example. The invention is not limited to these preferred embodiments.

• 1 shows a schematic representation of an exemplary pair of glasses or stereo glasses in connection with the eyes of a user and thus in the dressed state according to the invention;
• 2 shows a schematic representation of an exemplary pair of glasses in a side view
• 3 shows a schematic representation of an exemplary filter characteristic of the two lenses of an exemplary stereo glasses according to the invention or their imaging devices.

1 shows an exemplary stereo glasses 10 according to the invention for a stereo projection system operating using 3D wavelength multiplex technology (WMT), the stereo glasses 10 having a first lens 1a with a first interference filter and a second lens 1b with a second interference filter. The interference filters each have spectral transmission bands BL,BR,GL,GR,RL,RR and stop bands, the spectral stop bands of one interference filter comprising the transmission bands BL,BR,GL,GR,RL,RR of the other interference filter in the visible frequency range. The spectacle lenses 1a, 1b designed as interference filters are provided with at least three transmission bands BL, BR, GL, GR, RL, RR with an average bandwidth of less than or equal to 25 nm or 15 nm, with at least one transmission band in each of the primary colors red and green and is arranged in blue. The spectacle lenses 1a, 1b are designed as mineral interference filters, in particular with a carrier made of mineral glass and are curved with a radius of curvature in the range of 100 mm. The mineral interference filter on a mineral glass carrier creates a very robust and stable lens whose optical properties and mechanical properties complement each other very harmoniously.

The first and second spectacle lenses 1a, 1b are each provided with a curvature that is shaped like a spherical section and is therefore spherical.

An advantage of providing the curvature is that the problems that occur with the interference filters can be prevented or at least reduced. For example, the wearer of the glasses 10 does not always look straight ahead, that is, vertically, through the glasses 1a, 1b, but can also look towards the edges of the glasses 1a, 1b.

With such an oblique viewing angle, however, due to the light not incident centrally without the curvature of the lenses 1a, 1b, there are shifts in the transmission bands and thus color distortions, because the layers of the interference filters on the lenses 1a, 1b are the same or almost the same Thickness over the surface of the lenses 1a, 1b. They are transparent to a certain frequency or wavelength and block other frequencies or wavelengths, which is related to the passage length for the light through the layers of the interference filters. If the wearer of the stereo glasses 10 looks diagonally through the glasses 1a, 1b instead of perpendicularly, then different passage lengths result, which leads to shifts in the transmission bands of the glasses and color distortions occur. These can be compensated for or at least reduced by the curved lenses 1a, 1b.

Through this interaction of narrow-band transmission bands BL, BR, GL, GR, RL, RR and curved mineral lenses 1a, 1b, it is possible to achieve a good, particularly harmonious and colorful impression for the user of the glasses 10, which is also very proves to be rich in contrast. This is achieved precisely by the narrow transmission bands BL, BR, GL, GR, RL, RR with the extensive stop bands in between, without affecting the harmonious color impression. In addition, the image through the glasses 10 is characterized by a low directional dependence, which leads to a very pleasant perception of the environment through the glasses 10. This low directional dependence is achieved precisely in that the angle of incidence of the light onto the spectacle lenses 1a, 1b and thus onto the interference filters is selected to be perpendicular or almost perpendicular and the deviation from the vertical is therefore limited, so that the deviation affects the transmission of the light only slightly have a negative impact and can only have a small negative impact on the harmonious color impression at high contrast.

In the 1 and 2 Stereo glasses 10 shown consist of the glasses 1a and 1b, which are held with the help of a glasses frame. The glasses frame consists of two brackets 2a for hanging behind the ears of a user and a bridge 2b, which connects the two glasses 1a, 1b, which are enclosed by a frame 2c. The two temples 2a are designed so that they limit the lateral incidence of stray light. The frames 2c around the lenses 1a, 1b are so wide and extend in the direction of the wearer's face that they limit the incidence of stray light from above or below. In ent Speaking of this, the bridge 2b between the lenses 1a, 1b is widened so that the incidence of stray light in the area of the bridge 2b is limited. The stray light reduced by this glasses frame 2a, 2b, 2c enables improved color perception and improved contrast.

The stereo glasses 10 is characterized in that the distance of the lenses 1a, 1b to the eyeball with the eye lens and thus to the eye 3a, 3b is in the range between 20 and 30 mm. This allows the deviation between the focal point 5a, 5b of the lenses 1a, 1b and the center 4a, 4b of the eyeball 3a, 3b to be kept small and thus the risk or the degree of distortion in the harmonious color perception and in the contrast can be kept low. The distance between the eye 3a, 3b and the lens 1a, 1b can be measured along the line 8a, 8b.

The line 7a, 7b represents a connecting line between the eye 3a, 3b or the focal point 5a, 5b of the spectacle lens 1a, 1b and the central area of the spectacle lens 1a, 1b, where the line 7a, 7b penetrates the spectacle lens 1a, 1b vertically and thus the incident light penetrates the interference filter of the lens 1a, 1b without distortion due to an oblique incidence. Here an ideal view is given through the glasses 10.

On the other hand, the line 6a, 6b, which represents a line from the point of penetration of the line 8a, 8b through the spectacle lens 1a, 1b to the focal point 5a, 5b of the left and right spectacle lenses 1a, 1b, respectively, shows that due to the falling apart of the center of the eyes 3a, 3b and the focal points 5a, 5b the light at the puncture point passes through the spectacle lenses 1a, 1b not perpendicularly but obliquely, in particular at different angles depending on the position of the puncture point on the spectacle lens 1a, 1b.

As a result, the light passes through the multiple coatings of the interference filters at different angles, which is accompanied by color distortions or different transmission or blocking behavior. In extreme cases, this can even lead to blocking and thus suppression of individual narrow bands of the light sources - especially with monochromatic lasers. An acceptable stereo color image can be lost if this is not counteracted by a sufficient degree of curvature of the lenses 1a, 1b and by the choice of the distance d between the lens 1a, 1b and the eye 3a, 3b as well as by a suitable design of the layer thicknesses of the interference filter coatings .

The stereo glasses 10 is characterized in that the interference filters of the lenses 1a, 1b are formed by coating the first and second lenses 1a, 1b. This means that the glasses 10 can be realized particularly easily and efficiently or cost-effectively.

The coatings of the interference filters of the spectacle lenses 1a, 1b are designed with different layer thicknesses depending on the position on the spectacle lens 1a, 1b, with the layer thickness in the edge region of the spectacle lens 1a, 1b being greater than in the central region of the spectacle lens 1a, 1b. In addition to providing the curvature of the spectacle lenses 1a, 1b, an increase in the layer thickness of a coating of the spectacle lenses 1a, 1b, which can comprise several layers, is also realized towards the edges in order to achieve a changed passage length when the light falls at an angle and thus color distortions and image distortions due to the oblique passage through the lenses 1a, 1b or through the interference filters on the edges of the lenses 1a, 1b to at least partially compensate and thereby enable a particularly harmonious color perception with high contrast.

The layer thicknesses are constantly increasing from the central area to the edge of the interference filters of the lenses 1a, 1b. These layer thicknesses, which vary evenly depending on the direction of passage of the light, make it particularly possible to achieve a uniformly changed transmission length when the light falls at an angle, which is accompanied by uniformly different shifts in the transmission bands of the spectacle lenses, and thus color distortions and image distortions due to the oblique passage through the spectacle lenses 1a, 1b or through the interference filters on the edges of the lenses 1a, 1b to reduce particularly evenly and harmoniously and thereby enable a particularly harmonious color perception with high contrast.

In 3 the spectral distribution of the optical transmittance and thus the transmission bands BL, BR, GL, GR, RL, RR and stop bands of the interference filters of the lenses 1a, 1b as well as the spectral distribution of the light generated by the light sources for the stereo images of the stereo projection system are shown.

The light sources are implemented as monochromatic lasers with different wavelengths, of which two lasers in the spectral range B1, B2 of the primary color blue or the blue perception range of the eye emit monochromatic light, two lasers in the spectral range G1, G2 of the primary color green Depending on the green perception area of the eye, emit monochromatic light and two lasers in the spectral range R1, R2 of the primary color red or the red perception area of the eye emit monochromatic light.

The stereo glasses 10 are characterized in that the bandwidth of the transmission bands BL, BR, GL, GR, RL, RR of a lens 1a, 1b increases with increasing wavelength. The blue transmission bands BL,BR show an average bandwidth of the transmission band in the range of 14 nm or 5 nm. The green transmission bands GL,GR show an average bandwidth of the transmission band in the range of 20 nm or 12 nm. The red transmission bands RL,RR show a average bandwidth of the transmission band in the range of 25 nm or 15 nm.

This makes it possible to achieve a particularly harmonious color impression with high contrast. In particular, different sensitivities in color perception are compensated for, especially when the light falls at an angle.

Furthermore, the stereo glasses 10 are characterized in that the average bandwidths of the transmission band RL, RR in the basic color red are at least 10 nm wider than the average bandwidths of the transmission band BL, BR in the basic color blue. This makes it possible to achieve a particularly harmonious color impression with high contrast to a particularly pronounced extent. In particular, different sensitivities in color perception are compensated for, especially when the light falls at an angle.

The interference filters of the lenses 1a, 1b each have spectral transmission bands BL, BR, GL, GR, RL, RR and stop bands, whereby the spectral stop bands of one interference filter of one lens 1a have the transmission bands BR, GR, RR of the other interference filter of the other lens 1b in the visible frequency range. In addition, each transmission band BL,BR,GL,GR,RL,RR is assigned exactly one spectral range B1,B2,G1,G2,R1,R2 of a single laser of the stereo projection system in such a way that one spectral range B1,B2,G1,G2, R1, R2 is encompassed by a single transmission band BL,BR,GL,GR,RL,RR and is blocked from all other transmission bands BL,BR,GL,GR,RL,RR. This creates the possibility of implementing a stereo projection system that works using 3D wavelength multiplex technology (WMT).

The wearer or user of the stereo glasses 10 and the stereo projection system experiences a very pleasant and high-quality image perception, which is characterized by a harmonious color perception and a high contrast. In addition, reliable image separation of the stereo image data is guaranteed.

Reference symbol list

1a

left lens, interference filter

1b

right lens, interference filter

2a

Temple of the glasses frame

2 B

Bridge of the glasses frame

2a

Glasses frame frame

3a

eye of the user

3b

eye of the user

4a

center of the eye

4b

center of the eye

5a

Focal point of the left lens

5b

Focal point of the right lens

6a

Line to the focal point of the left lens

7a

Line through the central area of the left lens

8a

Line to the center of the left eye

6b

Line to the focal point of the right lens

7b

Line through the central area of the right lens

8b

Line to the center of the right eye

10

Stereo glasses

d

Distance of the lens to the eye

B1

Laser Blue Left

B2

Laser Blue Right

G1

Laser Green Left

G2

Laser Green Right

R1

Laser Red Left

R2

Laser Red Right

BL

Transmission band blue left

BR

Transmission band blue right

GL

Transmission band green left

GR

Transmission band green right

R.L

Transmission band red left

RR

Transmission band red right

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed 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.

Cited patent literature

• 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 [0006]
• DE 102006054713 B4 [0006, 0007]

Claims (14)

Glasses (10) with a first spectacle lens (1a) with a first interference filter and with a second spectacle lens (1b) with a second interference filter with respective spectral transmission bands (BL,BR,GL,GR,RL,RR) and stop bands, characterized in that the spectacle lenses (1a, 1b) designed as interference filters are designed with at least three transmission bands (BL, BR, GL, GR, RL, RR) with an average bandwidth of less than or equal to 25 nm, with at least one transmission band in the primary colors red , green and blue, that the lenses (1a, 1b) are designed as mineral interference filters and that the lenses (1a, 1b) are curved and have a radius of curvature in the range of 100 mm. Glasses (10) accordingly Claim 1 , characterized in that the spectacle lenses (1a, 1b) designed as interference filters are designed with at least three transmission bands (BL,BR,GL,GR,RL,RR) with an average bandwidth of less than or equal to 15 nm. Glasses (10) accordingly Claim 1 or 2 , characterized in that the glasses are designed as stereo glasses (10) for a stereo projection system operating using 3D wavelength division multiplex technology (WMT) and that the spectral stop bands of one interference filter are the transmission bands (BL,BR,GL,GR,RL,RR ) of the other interference filter in the visible frequency range. Glasses (10) according to one of the preceding claims, characterized in that the glasses (1a, 1b) have a radius of curvature between 90 and 120 mm. Glasses (10) according to one of the preceding claims, characterized in that the bandwidth of the transmission bands (BL, BR, GL, GR, RL, RR) of a spectacle lens (1a, 1b) increases with increasing wavelength. Glasses (10) accordingly Claim 5 , characterized in that the average bandwidths of the transmission band (RL, RR) in the basic color red are at least 10 nm wider than the average bandwidths of the transmission band (BL, BR) in the basic color blue. Glasses (10) according to one of the preceding claims, characterized in that the glasses (10) are designed such that the distance (d) of the glasses (1a, 1b) to the eyeball of the eye (3a, 3b) is in the range between 20 and 30 mm. Glasses (10) according to one of the preceding claims, characterized in that the interference filters are at least partially formed by coating the first and second glasses (1a, 1b). Glasses (10) accordingly Claim 8 , characterized in that the coatings of the interference filters of the spectacle lenses (1a, 1b) have different layer thicknesses depending on the position on the spectacle lens (1a, 1b), the layer thickness in the edge region of the spectacle lens (1a, 1b) being greater than in the central region of the lens (1a, 1b). Glasses (10) accordingly Claim 9 , characterized in that the layer thicknesses remain the same or increase, in particular steadily, from the central area to the edge. Glasses (10) according to one of the preceding claims, characterized in that the spectacle lenses (1a, 1b) are held by a frame (2a, 2b, 2c) which prevents the incidence of light that does not shine through the spectacle lenses (1a, 1b). , at least partially blocks the eye (3a, 3b) of the user of the glasses (10). Projection system comprising an image projector or a screen for displaying an image on a screen and glasses (10) according to one of the preceding Claims 1 , 2 and 4 until 11 , whose lenses (1a, 1b) correspond in their spectral transmission bands (BL,BR,GL,GR,RL,RR) and stop bands. Stereo projection system, comprising a stereo image projector or a stereo screen for displaying a stereo image on a screen using 3D wavelength multiplex technology (WMT) and stereo glasses (10) according to one of the preceding Claims 3 until 11 . projection system Claim 12 or stereo projection system Claim 13 , characterized in that the light sources of the image projector or the screen or the stereo image projector or the stereo screen represent laser light sources or other very narrow-band light sources, the light of which falls into a respective transmission band of the spectacle lenses, in particular in the area the lower edge of a transmission belt.

Images