Camera of a mobile device for creating a telephoto image

Abstract

A camera (20) of a mobile device (1) is described, which comprises at least two entrance apertures (2, 3) and at least two image sensors (6, 7), wherein a first entrance aperture (2) is assigned to a first image sensor (6) via a first imaging path (8) and a second entrance aperture (3) is assigned to a second image sensor (7) via a second imaging path (9), wherein the entrance apertures (2, 3) each have a light entry surface with a longitudinal direction (13) and a transverse direction (14) perpendicular to it, wherein the length (15) of the entrance aperture (2, 3) in the longitudinal direction (13) is at least 1.2 times greater than the width (16) of the entrance aperture (2, 3) in the transverse direction (14), and wherein the first imaging path (8) and the second imaging path (9) each comprise an anamorphic optic (4, 5).

Description

[0001] The present invention relates to a camera of a mobile device, a mobile device and a method for producing an image, in particular a telephoto image, by means of a camera.

[0002] The ability to capture high-quality telephoto images—that is, magnified images of distant objects—using cameras integrated into mobile devices is desirable from a consumer perspective, but presents a significant technical challenge for manufacturers. Cameras for capturing magnified images require specially designed lenses, particularly telephoto lenses, as well as a large aperture. In the context of cameras for typically very slim mobile devices, especially cell phones, the size of the aperture is severely limited by the available installation space, so that even with a folded optical path, the possible entry point is restricted.In the case of a square entrance opening, a mirror required for folding the beam path no longer fits into the housing of a common mobile device beyond a certain size of the entrance opening and thus also of the mirror in terms of its height.

[0003] While rectangular apertures increase the effective size or area of ​​the aperture, the larger aspect ratio, which in the case of a so-called slit aperture (i.e., a rectangular aperture with an aspect ratio of at least 3:2, for example 3:1 or higher), leads to diffraction-induced artifacts. Furthermore, a larger field of view (FOV) associated with a larger aperture implies a larger image sensor, which may not fit into a mobile device.

[0004] Currently, only telephoto cameras for mobile devices with a large focus length or focal length, which in their function correspond to a 35mm camera with a focal length of, for example, more than 200 mm, are known, whose images provide a comparatively small field of view and whose quality is limited by diffraction-related artifacts.

[0005] In the document Carles, G. and Harvey, AR: Multi-aperture imaging for flat cameras, in: Optics letters, Vol. 45, No. 22, pp. 6182-6185, dated 15.11.2020, flat cameras with one or more rectangular entrance apertures are described, whereby a plurality of image data transformed by means of Fourier transformation are combined into a common image data set and back-transformed.

[0006] Against the background described above, the object of the present invention is to provide an advantageous camera for a mobile device, an advantageous mobile device, and an advantageous method for producing an image, in particular a telephoto image, by means of a camera. These objects are achieved according to the independent claims. The dependent claims contain further advantageous embodiments of the invention.

[0007] The camera of a mobile device according to the invention comprises at least two entrance openings, in other words at least two apertures or light entry apertures, and at least two image sensors. A first entrance opening is assigned to a first image sensor via a first imaging path, and a second entrance opening is assigned to a second image sensor via a second imaging path. An imaging path defines the path of a light beam from an entrance aperture or opening to an image plane or an image sensor. The respective imaging path thus determines the respective beam path within the camera. In other words, light is directed from the first entrance opening to the first image sensor, and light is directed from the second entrance opening to the second image sensor.For telephoto cameras in the typically very flat mobile devices, especially mobile phones, the entrance aperture or aperture usually coincides with the entrance pupil due to the limited installation space. However, this is not necessarily the case; an internal aperture or aperture is also possible. For the present invention, it is only crucial that the entrance pupil of the entire optical path (including a deflecting prism and housing components) differs in two mutually perpendicular directions, meaning that the image quality (blurriness) differs in these two mutually perpendicular directions.

[0008] The at least two entrance openings each have a light-entry surface with a longitudinal direction, e.g., a longitudinal axis of a local coordinate system referenced to the entrance opening, and a transverse direction perpendicular to it, e.g., a transverse axis of a local coordinate system referenced to the entrance opening. The longitudinal length of the entrance opening, i.e., its dimension in the longitudinal direction, is greater than its transverse width, i.e., its dimension in the transverse direction, by a factor of at least 1.2, preferably by a factor of 2. The aperture openings need not be rectangular; elliptical or other shaped aperture openings are also conceivable.

[0009] The first imaging path, i.e., the beam path between the first entrance aperture and the first image sensor, and the second imaging path, i.e., the beam path between the second entrance aperture and the second image sensor, preferably each comprise an anamorphic optical system, or in other words, at least one anamorphic lens. The anamorphic optical system can include at least one cylindrical optical element, e.g., at least one cylindrical lens or at least one cylindrical mirror. The cylindrical optical element can be refractive or diffractive.

[0010] The camera according to the invention, which can also be a camera system or a camera arrangement, enables the acquisition of image data for the generation of high-quality telephoto images in a very small installation space. The geometric design of the entrance apertures, i.e., their slit-like shape, allows the integration of at least two folded beam paths into a mobile device, e.g., a mobile phone. By combining the image data acquired by the at least two image sensors, virtually all the image information of a telephoto image can be generated. According to the prior art, this requires an entrance aperture and an image sensor, each of a size that cannot be integrated into a mobile phone. The use of anamorphic optics enables a larger field of view compared to previously known solutions, even at high magnifications and image sizes.This allows the use of narrower image sensors without reducing the field of view (FOV). Furthermore, Fourier transforms require minimal processing time and power to generate high-quality telephoto images.

[0011] The present invention provides a camera system with a highly effective entrance aperture, which enables the integration of lenses with a long focal length and a large field of view (FOV) into a mobile device, e.g., a mobile phone. Furthermore, the camera according to the invention offers a very high effective aperture, e.g., an f-number of 1.4 (f-number F = focal length f / aperture diameter D), which can be integrated into flat housings of mobile devices, particularly for achieving long focal lengths, e.g., f = 21 mm.

[0012] In an advantageous embodiment, the first and second entrance openings are geometrically arranged relative to each other such that the longitudinal direction of the first and second entrance openings form an angle between 70 and 110 degrees, particularly between 80 and 100 degrees, preferably 90 degrees. The perpendicular or nearly perpendicular arrangement of the longitudinal directions of the entrance openings relative to each other has the advantage of enabling a large field of view. Furthermore, almost all image information of a comparable telephoto image can be reconstructed, wherein the comparable telephoto image is captured with a square image sensor and a square entrance opening with a side length corresponding to the longitudinal length of the two entrance openings used here. The entrance openings can be arranged in a T-shape or an L-shape relative to each other.

[0013] Preferably, the camera includes an evaluation or image processing unit. The evaluation or image processing unit is configured to receive image data acquired from at least two image sensors, e.g., the first and second image sensors, to transform the received image data from the individual image sensors using Fourier transformation, to generate a common data set from the transformed image data (i.e., to combine the transformed image data into a single data set), and to transform the generated common data set back using Fourier transformation. In this way, high-quality telephoto images with a magnification that is normally not achievable in the available installation space can be produced using a camera that requires very little installation space.

[0014] In particular, the image processing unit can be configured to partially mask the transformed image data from the individual image sensors to generate the combined dataset, so that the transformed image data complement each other and / or partially overlap, e.g., are added together. Additionally or alternatively, the image processing unit can be configured to select, e.g., crop, the transformed image data from the individual image sensors to generate the combined dataset in such a way that the transformed image data complement each other and / or partially overlap, e.g., are added together. These variants enable a nearly complete image reconstruction to produce a high-quality telephoto image.

[0015] In a further advantageous embodiment, the image processing device can be designed to correct artifacts and / or aberrations in an image or image file generated using the back-transformed image data, and / or to supplement image data in Fourier spectral regions not captured by the image sensors, e.g., a blurred image of object structures that are obliquely oriented to the two longitudinal directions of the aperture or entrance opening. This can improve the quality of the generated telephoto image. Preferably, the image processing device for correcting artifacts and / or aberrations and / or supplementing image data in an image generated using the back-transformed image data can be designed using a neural network. This can further improve the quality of the generated telephoto image.

[0016] The image processing unit can be configured for pixel binning. This allows for the implementation of a zoom function and / or the reduction of magnification and / or the increase of the field of view (FOV).

[0017] Optionally, the first imaging path, in particular the beam path between the first entrance aperture and the first image sensor, and / or the second imaging path, in particular the beam path between the second entrance aperture and the second image sensor, can include a telephoto lens. In principle, the beam paths, i.e., the beam path between the first entrance aperture and the first image sensor and / or the beam path between the second entrance aperture and the second image sensor, can be designed as folded structures. This reduces the required installation space.

[0018] In another variant, the first imaging path and / or the second imaging path can each comprise an optical system, each designed in such a way that, for objects at a distance less than 100 times the smaller of the two focal lengths of the anamorphic system, the parallax error caused by the positioning of the entrance apertures, or in other words, by the different installation location of the imaging paths, is reduced, in particular compensated.

[0019] Specifically, the parallax error can be compensated for as follows. The two imaging paths for generating an image of the same object can be routed separately in independent "off-axis" systems and directed to individual image sensors. This allows for the separation of the image data acquired via the individual imaging paths, for example, by beam deflection elements such as mirrors, prisms, or other suitable refractive or diffractive optical elements. Between the respective optical element used for beam deflection and the respective image sensor, further optical elements, such as mirrors or prisms, can be arranged to convolve the beam path. The images or image data separated in this way exhibit different diffraction effects and can be processed individually. In particular, the image data can be stretched or compressed independently to align them.

[0020] The camera according to the invention can have a field of view (FOV) of at least 10 degrees, for example a square FOV of 16 degrees by 16 degrees (16°x16°). This represents a significant improvement compared to the prior art cited at the outset, where, at the same magnification, only an FOV of 6.1 degrees by 3.8 degrees is achieved. In particular, according to the invention, a square FOV can be realized using, for example, two rectangular entrance apertures and two rectangular image sensors.

[0021] The at least two inlet openings and / or the at least two image sensors can have a rectangular cross-sectional area. This is advantageous from a manufacturing perspective and allows for a maximum opening area under given geometric constraints. A rectangular cross-sectional area with rounded corners or another slot-like shape is also possible. The at least two inlet openings can have geometrically different cross-sectional areas. These do not have to be rectangular.

[0022] The mobile device according to the invention comprises a camera according to the invention as already described. The mobile device according to the invention has the features and advantages of the camera according to the invention as already described. The mobile device according to the invention can be a mobile phone, tablet, notebook, smartwatch, netbook, etc.

[0023] The inventive method for generating an image, in particular a telephoto image or magnified image, using a camera according to the invention described above, comprises the following steps: capturing image data using at least two image sensors; transforming the captured image data by means of a Fourier transform; generating a common data set from the transformed image data, i.e., the image data transformed by means of a Fourier transform; and inversely transforming the generated common data set by means of a Fourier transform. Preferably, an image, in particular a telephoto image, can be generated from the inversely transformed image data. The inventive method has the advantages already described in connection with the camera according to the invention.

[0024] Generating a unified dataset from the transformed image data can involve merging, masking, cutting, selecting, and / or overlaying specific data or data ranges. This eliminates imaging errors and improves image quality.

[0025] Artifacts and / or aberrations in the generated image can be corrected, and / or image information not captured in the frequency domain can be augmented. Correction and / or augmentation can be performed using neural networks. Common, readily available neural networks can be used for this purpose. Artifacts and / or aberrations can occur in the generated image, particularly in areas where image data has been appended, superimposed, or augmented. In overlapping image areas, frequencies can be weighted and / or normalized. Furthermore, frequency edges or frequency jumps can be smoothed or avoided. This can be achieved through smoothing or blurring, for example, by replacing a step function with a rounded step function at the affected points.

[0026] Furthermore, image information not captured in the frequency domain can lead to artifacts in the reconstructed image. These artifacts are either missing features, i.e., structures whose frequencies mainly fall within the missing ranges, or so-called ringing artifacts, which appear as repeating edges. Such artifacts can be reduced using trained neural networks. The image or image data captured by at least two rectangular, preferably slit-shaped, image sensors serves as input to such a neural network. The output is the complete image or representation without the missing frequency components or frequency ranges. The neural network learns to detect most of the ringing artifacts.In this context, diffusion models or GAN models (Generative Adversarial Networks) can be used. Such networks can also replace or supplement missing image areas; however, the image content does not necessarily correspond to the original object being depicted. In addition to or as an alternative to using neural networks as an approach to reducing or correcting artifacts, artifact reduction can also be formulated as a classical unfolding problem and solved using iterative optimization methods.

[0027] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying figures. Although the invention is illustrated and described in detail by the preferred embodiments, the invention is not limited by the disclosed examples and other variations can be derived from them by a person skilled in the art without departing from the scope of protection of the invention.

[0028] The figures are not necessarily detailed or to scale and may be enlarged or reduced to provide a better overview. Therefore, the functional details disclosed here are not to be understood as limiting, but merely as an illustrative basis to guide those skilled in this field of technology in using the present invention in a variety of ways.

[0029] The expression "and / or" used here, when used in a series of two or more elements, means that each of the listed elements can be used alone, or any combination of two or more of the listed elements can be used. For example, when describing a composition containing the components A, B, and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination. Fig. Figure 1 schematically shows a camera according to the invention of a mobile device according to the invention in a top view. Fig. Figure 2 schematically shows a camera according to the invention for a mobile device in the form of a block diagram. Fig. Figure 3 schematically shows the simulated ray path of one of the optical paths in a perspective view. Fig. Figure 4 schematically shows the [structure] in the Fig. 3. Ray path shown in a side view. Fig. Figure 5 schematically shows the step of capturing image data. Fig. Figure 6 schematically shows the captured image data transformed using Fourier transformation. Fig. Figure 7 schematically shows the step of masking specific image data areas. Fig. Figure 8 schematically shows the steps of generating a common data set and the reverse transformation. Fig. Figure 9 schematically shows the effect of diffraction effects on the captured image data and their reduction. Fig. Figure 10 schematically shows the effect of the aspect ratio on the formation of artifacts.

[0030] The Fig. Figure 1 schematically shows a top view of a camera 20 according to the invention, belonging to a mobile device 1 according to the invention. The mobile device 1 can, for example, be a mobile phone. The camera 20 shown comprises a first entrance opening 2 and a second entrance opening 3. In the illustrated embodiment, the entrance openings 2 and 3 are identically designed and each have a longitudinal direction 13 and a transverse direction 14 perpendicular to it. The length 15 in the longitudinal direction 13 of the entrance openings 2 and 3 is in each case at least 1.2 times, preferably at least 2 times, greater than the width 16 in the transverse direction 14.

[0031] The longitudinal directions 13 or the center lines 12 running in longitudinal direction 13 of the entrance openings 2 and 3 enclose an angle α which is preferably between 70 degrees and 110 degrees and is 90 degrees in the preferred variant shown.

[0032] In the Fig. In the variant shown, the entrance openings 2 and 3 are arranged next to each other and offset from one another. Alternatively, a T-shaped arrangement or a non-offset L-shaped arrangement is also possible.

[0033] The Fig. Figure 2 schematically shows a camera 20 according to the invention for a mobile device 1 in the form of a block diagram. The camera 20 shown comprises at least two image sensors 6 and 7, wherein the first entrance aperture 2 is assigned to a first image sensor 6 via a first imaging path 8 and a second entrance aperture 3 is assigned to a second image sensor 7 via a second imaging path 9. The first imaging path 8 and the second imaging path 9 each comprise an anamorphic lens 4 and 5, respectively, and a telephoto lens (not explicitly shown).

[0034] Optionally, the camera 20 includes an image processing unit 10, which is designed to receive and process image data acquired by the image sensors 6 and 7. Data transmission is indicated by arrows with the reference numeral 11. The image processing unit 10 is designed to transform the received image data from the image sensors 2 and 3 using Fourier transformation (see Fig. 5 and Fig. 6) to generate a common dataset from the transformed image data (see Fig. 7), i.e., combining the transformed image data into a common dataset, and transforming the generated common dataset back using Fourier transformation (see Fig. 8) Neural networks, as described above, can be used to correct artifacts and / or aberrations.

[0035] The Fig. Figure 3 schematically shows the beam path 17 of one of the optical paths 8, 9 of the camera 20, simulated with the Zemax software, in a perspective view. Fig. Figure 4 schematically shows the [structure] in the Fig. Figure 3 shows the beam path 17 in a side view. Light 17 entering the camera 20 through the rectangular entrance aperture 2, 3 is reflected by means of a mirror 18 into a plane of the mobile device 20 and is then guided in this plane to the rectangular image sensor 6, 7. In the variant shown, the image sensor 6, 7 is arranged perpendicular to the plane of the mobile device 20, i.e., vertically. Alternatively, the image sensor 6, 7 can also be arranged in the plane of the mobile device 20, i.e., horizontally.

[0036] In the beam path 17, an anamorphic lens 4, 5 is arranged between the entrance aperture 2, 3 or the mirror 18 and the image sensor 6, 7. The anamorphic lens 4, 5 distorts the image or projection, thereby increasing the field of view or FOV. In the Fig. 3 and Fig. In the variant shown in 4, further optical elements, for example prisms and / or mirrors 19, are arranged in the beam path, which cause a folding of the beam path 17.

[0037] In principle, telephoto lenses or corresponding tele-optics required to generate a telephoto image require a large entrance aperture. Due to the limited installation space in mobile devices, such as mobile phones, large entrance apertures cannot be realized even with a folded beam path, especially since the height of the mirror 18 required for folding the beam path is limited by the thickness or depth of the mobile device. This is particularly true in the case of square entrance apertures and square image sensors. A rectangular entrance aperture allows at least an increase in its effective size. However, diffraction-related artifacts occur at larger aspect ratios, especially greater than 3:2.

[0038] In the depicted variant, an aspect ratio of 3:1 is used for the two entrance apertures 3 and 4 and the two image sensors 6 and 7. The additional anamorphic optics 4, 5 can, for example, stretch the image by 2:1, thereby halving the height of the respective image sensors 6, 7 compared to a square design (e.g., from 10x10mm to 10x5mm) by compressing the image in the direction of diffraction. Both measures—increasing the aspect ratio and using an anamorphic design—enable the integration of a telephoto system with a small aperture and a large field of view into a mobile device, such as a mobile phone.

[0039] The following will be based on the Fig. 5 to 10 a method according to the invention for producing an enlarged image, i.e. a telephoto image, by means of a camera according to the invention, for example one based on the Fig. The camera described in sections 1 to 4 is explained in more detail. For better illustration, a simulation based on a paraxial system with two entrance apertures 2, 3, each with an aspect ratio of 15:1, is used.

[0040] In a first step, which takes place in the Fig. As shown schematically in Figure 5, image data, in this case of the capital letter "F", are acquired using the two image sensors 6, 7. Depending on the orientation of the entrance apertures 2 and 3, diffraction causes a blurring effect 29 (which is difficult to show in the figures). In addition, the images are anamorphically compressed in the direction of diffraction.

[0041] In a second step, the captured image data is then transformed using Fourier transformation. This is described in the Fig. Figure 6 shows schematic representations. The schematically represented, transformed image data (Fourier spectrum) are labeled with reference numerals 21 and 22. In regions 27, the Fourier spectrum exhibits high intensities. Reference numerals 23 indicate, with respect to a square Fourier spectrum of an imaginary square image sensor, regions for which no image information has been acquired. Arrows 24 indicate regions in which, depending on the orientation of the entrance apertures 2 and 3, contributions of higher spatial frequencies are lost.

[0042] In another, in the Fig. In step 7, shown schematically, the transformed image data 21 and 22 are masked and / or sections thereof are cut out. Subsequently, the data contained in the Fig. The transformed and masked image data 21 and 22 shown in Figure 7 are combined into a common dataset 25, whereby the areas 23 with diffraction-related information loss are ignored or suppressed. This step is shown schematically in the Fig. Figure 8 on the left shows this. In practice, masking can also be omitted, and the relevant areas can be directly merged. Furthermore, individual image data areas at edges 28 from the different image data sets 21 and 22 can be overlapped or superimposed. This avoids visible transitions and improves the overall image quality.

[0043] The generated common dataset 25 is used in another, in the Fig. Step 8, shown, is transformed back using a Fourier transform. The result is shown in the Fig. Figure 8, right-hand telephoto image of the capital letter “F” captured by means of the camera 20 according to the invention. Advantageously, artifacts and / or aberrations in the generated image can be avoided. Fig. to be corrected and / or missing areas 23 in the corners (see Fig. 8 links) in the generated Fig. They can be supplemented, for example, using neural networks. Furthermore, the areas where the transformed image data 21 and 22 were joined can be smoothed and / or corrected for image errors, e.g., using rounded step functions.

[0044] The Fig. Figure 9 summarizes the effect of diffraction effects at the entrance openings on the image data acquired by means of the image sensors 6 and 7, as well as their significant reduction in the image produced according to the invention. Fig. .

[0045] The Fig.Figure 10 shows the effect of an aspect ratio of 15:1 for an entrance opening 2, 3 compared to an entrance opening 2, 3 with an aspect ratio of 3:1. With an aspect ratio of 3:1, the remaining artifacts are significantly reduced. Reference symbol list: 1 mobile device 2 Entrance 3 Entrance opening 4 anamorphic optics 5 anamorphic optics 6 image sensor 7 Image sensor 8 Image path 9 Image path 10 Image processing equipment 11 Data transmission 12 Center line 13 Longitudinal direction 14 Transverse direction 15 Length 16 width 17 Beam path 18 mirrors 19 Prism / Mirror 20 cameras 21 transformed image data 22 transformed image data 23 areas with diffraction-related information loss 24 areas with missing higher local frequencies 25 shared dataset 26 Image produced according to the invention 27 high-intensity areas 28 image data areas for overlap 29 Blur α angle QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited non-patent literature

[0000] Carles, G. and Harvey, AR: Multi-aperture imaging for flat cameras, in: Optics letters, Vol. 45, No. 22, pp. 6182-6185, from November 15, 2020

[0005]

Claims

[1] Camera (20) of a mobile device (1) comprising at least two entry openings (2, 3) and at least two image sensors (6, 7), wherein a first entrance aperture (2) is assigned to a first image sensor (6) via a first imaging path (8) and a second entrance aperture (3) is assigned to a second image sensor (7) via a second imaging path (9), characterized by , that the entrance openings (2, 3) each have a light entry surface with a longitudinal direction (13) and a transverse direction (14) perpendicular to it, wherein the length (15) of the entrance opening (2, 3) in the longitudinal direction (13) is at least 1.2 times greater than the width (16) of the entrance opening (2, 3) in the transverse direction (14), wherein the first imaging path (8) and the second imaging path (9) each comprise an anamorphic optic (4, 5). [2] Camera (20) according to claim 1, characterized by, that the first entrance opening (2) and the second entrance opening (3) are arranged geometrically to each other such that the longitudinal direction (13) of the first entrance opening (2) and the longitudinal direction (13) of the second entrance opening (3) enclose an angle (α) between 70 degrees and 110 degrees. [3] Camera (20) according to claim 1 or claim 2, characterized by , that the camera (20) comprises an image processing device (10) which is designed to receive image data (11) captured by the at least two image sensors (6, 7), to transform the received image data of the individual image sensors (6, 7) by means of Fourier transformation, to generate a common data set (25) from the transformed image data (21, 22) and to transform the generated common data set (25) back by means of Fourier transformation. [4] Camera (20) according to claim 3, characterized by, that the image processing device (10) is designed to partially mask the transformed image data (21, 22) of the individual image sensors (6, 7) for the purpose of generating the common data set (25), so that the transformed image data (21, 22) complement each other and / or partially overlap, and / or to select transformed image data sub-areas for the purpose of generating the common data set (25) such that the transformed image data (21, 22) complement each other and / or partially overlap. [5] Camera (20) according to one of claims 1 to 4, characterized by , that the image processing device (10) is designed to correct artifacts and / or aberrations in an image generated using the back-transformed image data and / or to supplement image data in Fourier spectral ranges (23) not captured by the image sensors (6, 7). [6] Camera (20) according to claim 5, characterized by, that the image processing device (10) is designed to correct artifacts and / or aberrations and / or to supplement image data in an image (26) generated using the back-transformed image data by means of a neural network. [7] Camera (20) according to any one of claims 1 to 6, characterized by , that the image processing device (10) is designed for pixel binning. [8] Camera (20) according to any one of claims 1 to 7, characterized by , that the first imaging path (8) and / or the second imaging path (9) include a telephoto lens. [9] Camera (20) according to any one of claims 1 to 8, characterized by, that the first imaging path (8) and / or the second imaging path (9) each comprise an optical system, each designed such that for objects at a distance less than 100 times the smaller of the two focal lengths of the anamorphic system, the parallax error caused by the positioning of the entrance apertures is reduced. [10] Camera (20) according to any one of claims 1 to 9, characterized by that the camera (20) has a field of view of at least 10 degrees. [11] Camera (20) according to any one of claims 1 to 10, characterized by , that the at least two inlet openings (2, 3) and / or the at least two image sensors (6, 7) have a rectangular cross-sectional area, and / or the at least two inlet openings (2, 3) have geometrically different shaped cross-sectional areas. [12] Mobile device (1) comprising a camera (20) according to any one of claims 1 to 11. [13] Mobile device (1) according to claim 12, characterized by , that the mobile device (1) is a mobile phone or a tablet or a notebook or a smartwatch or a netbook. [14] Method for producing an image using a camera (20) according to any one of claims 1 to 11, characterized by that the procedure includes the following steps: - Acquisition of image data using at least two image sensors (6, 7), - Transforming the captured image data using Fourier transformation (21, 22), - Generating a common dataset (25) from the transformed image data (21, 22), - Inverse transformation of the generated common data set (25) using Fourier transformation. [15] Method according to claim 14, characterized by, that generating a common data set (25) from the transformed image data (21, 22) involves merging and / or masking and / or cutting and / or selecting and / or overlaying certain image data areas. [16] Method according to claim 14 or 15, characterized by , that artifacts and / or aberrations in the generated image (26) are corrected and / or image information not captured in the frequency domain is added to the generated image (26).

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