Imaging optical device

Abstract

The invention relates to an imaging optics for imaging at least one light source (1) onto at least one photosensitive sensor (4), said imaging optics having at least one optical diaphragm (2), at least one beam-shaping optical element (3) and at least one photosensitive sensor (4), said at least one beam-shaping optical element (3) being a plano-concave cylindrical mirror, especially a plano-concave cylindrical surface mirror.

Description

TECHNICAL FIELD

[0001] The invention relates to an imaging optics for imaging at least one light source onto at least one light-sensitive sensor, the use of such an imaging optics for detecting the position and / or movement of at least one object in space, and a method for detecting the position and / or movement of at least one object in space according to the preamble of claim 1 and 14, respectively. BACKGROUND

[0002] In the prior art, it is known from WO 2004 / 046770 Al to provide a device for imaging a light source onto at least one light-sensitive sensor by means of at least one optical lens, wherein the optical means for generating the imaging have a beam shaping optical element in the form of at least one lens having an annular and aspherical shape. By using a lens having an annular and aspherical shape, it is possible to minimize the spherical aberration which normally occurs in optical lenses, also referred to as opening error or spherical construction error. By using a lens having an annular and aspherical shape, an improved imaging quality can be achieved, in particular when the light is incident at a large angular range. However, the manufacture of a lens having an annular and aspherical shape is technically complex and associated with high production costs. SUMMARY

[0003] It is an object of the present invention to achieve an exact optical imaging of at least one light source onto at least one light-sensitive sensor with an imaging optics which is easy to manufacture, with which imaging optics it is also possible to accurately detect the position and / or movement of at least one object in space.

[0004] This object is achieved by the imaging optics having the features of claim 1, by the use of such an imaging optics and by the method having the features of claim 14.

[0005] Advantageous embodiments are defined in the dependent claims.

[0006] The imaging optics is in principle suitable for imaging at least one light source onto at least one corresponding light-sensitive sensor, which light source can emit monochromatic and / or polychromatic light in the visible range and / or outside the visible range, in particular infrared light.

[0007] The object whose position and / or movement in space is to be detected can itself emit light and thus form a light source. The object can also have a light source which can be arranged on the object. It is also conceivable that light reflected on the object is detected by the imaging optics. To this end, for example, a suitable reflector can be arranged on the object.

[0008] The light-sensitive sensor can in principle be configured in the form of a photoelectric sensor, which converts light incident on the light-sensitive sensor into an electrical signal.

[0009] The imaging optics comprises at least one optical stop, at least one beam-shaping optical element and at least one light-sensitive sensor.

[0010] In the context of geometrical optics, the optical stop can serve to mechanically limit the beam in the optical imaging.

[0011] The beam-shaping optical element can generally serve to shape the light beam, in particular by changing the propagation direction of the light transmitted and / or reflected by the optical element.

[0012] In an advantageous embodiment, the at least one beam-shaping optical element is configured as a plano-concave cylindrical mirror.

[0013] A plano-concave cylindrical mirror can generally be understood as a concave mirror. In particular, it can be understood as a mirror which is concavely, i.e. inwardly, curved in one direction. The plano-concave cylindrical mirror can be embodied such that it is flat along one axis and has a curvature along an axis which extends substantially orthogonally thereto. The curvature and thus the peripheral surface of the cylindrical mirror can generally be configured as elliptical, parabolic, non-cylindrical, in particular aspherical-cylindrical, or in particular circular with constant curvature.

[0014] Along the peripheral surface, the plano-concave cylindrical mirror can have a concavely curved profile when viewed in the peripheral direction. In the height direction, i.e. when viewed parallel to the cylinder axis, the plano-concave cylindrical mirror can have a flat profile.

[0015] In beam-shaping optical elements such as optical lenses, in which the shaping of the light beam is achieved by transmission, imaging errors arise due to different beam path and optical path lengths caused by the thickness and shape of the lenses used in practice. Additional imaging errors can arise due to the wavelength-dependent refractive index. Additional optical elements can be necessary for beam guidance.

[0016] By means of the beam-shaping optical element in the form of the easily producible plano-concave cylindrical mirror, a shaping of the light beam can be achieved which is essentially achieved by reflection alone.

[0017] The plano-concave cylindrical mirror can be used simultaneously for beam guidance, i.e. for the formation of the beam path, and for beam focusing.

[0018] The beam path of the imaging optics can generally extend in an optically transparent medium. The medium can be, for example, a vacuum, generally gaseous, in particular air, glass or an optically transparent plastic.

[0019] The beam path of the imaging optics can essentially be understood as the profile followed by the incident light from the optical stop to the light-sensitive sensor.

[0020] In particular in embodiments with glass as optical medium, a high temperature stability of the structure between the diaphragm, the optical element and the sensor can be achieved.

[0021] In embodiments with glass or optically transparent plastic as optical medium, the plano-concave cylindrical mirror of the imaging optics can be constituted by a suitable mirror coating of the respective plano-concave cylindrical outer surface of the main body of the optical medium.

[0022] Advantageously, the at least one beam shaping optical element can be arranged in the optical beam path between the at least one optical diaphragm and the at least one light-sensitive sensor. Thereby, the optical diaphragm can mechanically limit the light flux incident on the plano-concave cylindrical mirror.

[0023] The at least one optical diaphragm and / or the at least one light-sensitive sensor can be arranged outside the optical plane of the at least one beam shaping optical element. The optical plane of the plano-concave cylindrical mirror can be understood similar to the optical axis as a symmetry plane extending through the center point of curvature of the cylindrical mirror. Light beams incident on the plano-concave cylindrical mirror in the optical plane are reflected in the optical plane. Light beams incident on the plano-concave cylindrical mirror outside the optical plane undergo a reflection - and thus a beam path formation - and a beam focusing.

[0024] The imaging optics can have a folded beam path between the at least one optical diaphragm and the at least one light-sensitive sensor. The beam path can have a distribution deviating from a straight-line distribution, whereby the imaging optics can have a smaller location requirement. In contrast to imaging optics with transmissive-based optical lenses, by the plano-concave cylindrical mirror an optical diaphragm can be imaged onto a light-sensitive sensor in a folded beam path deviating from a straight-line distribution by reflection of the incident light beams.

[0025] The imaging optics can generally image the slit opening of the at least one optical diaphragm onto the at least one light-sensitive sensor.

[0026] In an advantageous embodiment, the at least one light-sensitive sensor can be a face sensor or a line sensor. The face sensor or the line sensor can be constituted by a plurality of face-like or line-like arranged single sensors, also referred to as pixels. The light incident thereon can be detected by one or more single sensors depending on the intensity distribution of the incident light. Depending on the single sensors illuminated by the incident light, the position of the incidence along the face sensor or the line sensor can be determined. Embodiments with analog light-sensitive sensors can also be considered, which can have a substantially isotropic sensor surface and can provide continuous position information about the incident light.

[0027] The longitudinal extension of the optical sensor can correspond to the size of the light-sensitive area of the sensor, i.e. for example the size of a pixel row or of the sensor face.

[0028] The at least one optical diaphragm can be a slit diaphragm having a slit opening with a predetermined or predeterminable width along a transverse direction and a predetermined or predeterminable height along a longitudinal direction. A slit diaphragm can generally be characterized by its width. If the length of the slit is additionally predetermined or predeterminable, this can be characterized by the height.

[0029] The position and / or the movement of the at least one object in space can be characterized by at least one angle with respect to the optical diaphragm of the imaging optics. The angle, for example the polar angle and / or the azimuthal angle, with respect to the optical diaphragm of the imaging optics can be measured or defined with respect to the width direction and / or the height direction of the optical diaphragm.

[0030] The angle can for example be measured with respect to the normal of the plane of the optical diaphragm. In the case where the orientation of the diaphragm with respect to a predetermined or predeterminable spatial direction, for example with respect to a horizontal or vertical direction, is known, the position of the object in space can for example be characterized by a trigonometric relationship.

[0031] Advantageously, the slit opening of the optical diaphragm extends parallel to the cylinder axis of the beam shaping optical element when viewed along the height. In an embodiment in which the beam shaping optical element is a plano-concave cylindrical mirror, the cylinder axis extends through the center of curvature of the mirror. The optical diaphragm, which is embodied as a slit diaphragm, can be oriented with respect to the mirror such that the cylinder axis extends parallel to the height direction of the slit, viewed in the height of the optical diaphragm, i.e. in the longitudinal direction of the slit.

[0032] Light incident on the optical diaphragm at different azimuthal angles, i.e. at different angles with respect to the longitudinal direction of the slit diaphragm, is in this arrangement incident on the plano-concave cylindrical mirror at different angles on different regions along the height direction of the plano-concave cylindrical mirror and is reflected according to a concave distribution in this direction.

[0033] The at least one light-sensitive sensor can be configured as a line sensor or a face sensor having a longitudinal extension along a longitudinal direction, wherein the longitudinal direction advantageously extends transversely, in particular at right angles, with respect to the cylinder axis of the optical element which performs beam shaping, viewed in the projection onto the beam path between the mirror and the sensor.

[0034] Light incident on the optical diaphragm at different polar angles, i.e. at different angles around the longitudinal direction of the slit diaphragm, is in this arrangement incident on the plano-concave cylindrical mirror at different angles on different regions along the circumferential direction of the plano-concave cylindrical mirror and is reflected and focused corresponding to a convex distribution in this direction.

[0035] The at least one light-sensitive sensor can be configured as a line sensor or a surface sensor having a longitudinal extension along a longitudinal direction, wherein the polar angle around the longitudinal direction of the optical diaphragm can be determined from the position of the imaged light source along the longitudinal extension of the at least one light-sensitive sensor.

[0036] The imaging optics can comprise an evaluation device by means of which the polar angle around the longitudinal direction of the optical diaphragm can be determined from the position of incidence along the longitudinal extension of the at least one light-sensitive sensor.

[0037] The evaluation device can have at least one computing unit which is in data connection with at least one memory unit of the evaluation device or can be introduced into such a data connection. Data on the distance, size, geometry and focal length of the imaging optics can be stored in the memory unit of the evaluation device. Embodiments of the evaluation device with sensors for detecting the alignment of the imaging optics with a predefinable or predefined spatial direction can also be considered.

[0038] The computer program product can comprise instructions which, when implemented by the computing unit, cause the computing unit to implement a method for detecting the position and / or movement of at least one object in space from the memory unit.

[0039] The computer program product can be stored, for example, in at least one memory unit of the evaluation device and implemented by the at least one computing unit of the evaluation device.

[0040] By arranging two or more imaging optics or imaging optics with a corresponding number of diaphragms, mirrors and sensors oriented in different spatial directions, the position of the light source and, if necessary, their movement in space can be determined by determining the corresponding angles and, if necessary, changing them. Furthermore, the distance from the object to the imaging optics can be determined stereoscopically.

[0041] By focusing the light onto the light-sensitive sensor, particularly in the case of a plurality of adjacent light sources, a more sensitive detection and a higher spatial resolution can generally be achieved.

[0042] The at least one light-sensitive sensor can be arranged at a distance from the at least one beam-shaping optical element, the distance being smaller than the radius of curvature of the at least one beam-shaping optical element, preferably smaller than three quarters of the radius of curvature, particularly preferably smaller than two thirds of the radius of curvature, in particular substantially half the radius of curvature. Thereby a reduced imaging of the optical diaphragm onto the light-sensitive sensor can be achieved, whereby a more sensitive detection and a higher spatial resolution can be achieved.

[0043] The at least one optical aperture can be arranged essentially with a distance to the at least one beam shaping optical element, the distance being smaller than a radius of curvature of the at least one beam shaping optical element, preferably smaller than three quarters of the radius of curvature, particularly preferably smaller than two thirds of the radius of curvature, in particular essentially half of the radius of curvature. Thereby an angular range can be influenced from which light of a light source can be incident on the beam shaping optical element.

[0044] The at least one optical aperture can be arranged essentially with a distance to the at least one beam shaping optical element, the distance being smaller than a radius of curvature of the at least one beam shaping optical element, preferably smaller than three quarters of the radius of curvature, particularly preferably smaller than two thirds of the radius of curvature, in particular essentially half of the radius of curvature. Thereby an angular range can be influenced from which light of a light source can be incident on the beam shaping optical element.

[0045] The at least one optical aperture can be arranged essentially with a distance to the at least one beam shaping optical element, the distance being smaller than a radius of curvature of the at least one beam shaping optical element, preferably smaller than three quarters of the radius of curvature, particularly preferably smaller than two thirds of the radius of curvature, in particular essentially half of the radius of curvature. Thereby an angular range can be influenced from which light of a light source can be incident on the beam shaping optical element.

[0046] The distance between the at least one optical aperture and the at least one beam shaping optical element and the distance between the at least one optical aperture and the at least one beam shaping optical element can be matched to each other. For a given size, geometry and focal length of the beam shaping optical element, a given aperture opening and a given longitudinal extension of the sensor, the distance between the at least one optical aperture and the at least one beam shaping optical element can predefine an angular range from which light emitted by a light source can be incident on the mirror and reflected by the mirror. The longitudinal extension, i.e. the sensor length, of the sensor can predefine an angular range from which light reflected by the mirror can be detected by the sensor.

[0047] The at least one optical aperture, the at least one beam shaping optical element and the at least one photosensitive sensor can be arranged at the corner points of a triangle. Thereby an arrangement of the imaging optics deviating from a straight line distribution is created. Parts of the imaging optics which are arranged partially adjacent to each other can have a reduced location requirement.

[0048] The at least one optical aperture and the at least one photosensitive sensor can be arranged spatially between the at least one light source and the at least one beam shaping optical element. Thereby parts of the imaging optics can be arranged partially adjacent to each other.

[0049] The imaging optics as described above can be part of an arrangement comprising at least one imaging optics and at least one light source. The at least one light source can be arranged on at least one object whose position and / or motion in space is to be detected.

[0050] Also sought to be protected is the use of the imaging optics as described above for detecting the position and / or motion in space of at least one object, wherein the at least one light source is arranged on the at least one object.

[0051] Also sought to be protected is a method for detecting the position and / or motion in space of at least one object. In particular, the imaging optics as described above can be used to perform the method.

[0052] Here, the light emitted by the at least one object can first pass through the at least one optical diaphragm. Then, the light can be incident on the at least one beam-shaping optical element in the form of a plano-concave cylindrical mirror and be reflected and, if necessary, focused, wherein beam guidance and beam focusing can be achieved here. Then, the light can be incident on and detected by the at least one light-sensitive sensor.

[0053] The object whose position and / or motion in space is to be detected can itself emit light and thus form a light source. The object can also have a light source that can be arranged on the object. It is also conceivable that light reflected on the object is detected by the imaging optics. To this end, for example, a suitable reflector can be arranged on the object.

[0054] The light emitted by the at least one object can pass through the at least one optical diaphragm at a polar angle around a longitudinal direction of the optical diaphragm, wherein the light can then be incident on a cylindrical peripheral segment of the plano-concave cylindrical mirror according to the polar angle and be reflected. The light can be incident and detected according to the polar angle at a position along a longitudinal extension in a longitudinal direction of the at least one light-sensitive sensor configured as a line sensor or a surface sensor. The polar angle can be determined by an evaluation device of the imaging optics from the position of incidence along the longitudinal extension in the longitudinal direction of the at least one light-sensitive sensor.

[0055] The light emission from a plurality of objects or light sources to be detected can be timed sequentially in order to be able to distinguish between different objects and light sources. Different spectral distributions and differently sensitive sensors can also be considered. BRIEF DESCRIPTION OF DRAWINGS

[0056] Embodiments of the application are discussed with reference to the accompanying drawings. The drawings show:

[0057] Figure 1 a perspective view showing an embodiment of the imaging optics and an object having a light source arranged thereon at a first position in space;

[0058] Figure 2 perspective view showing the imaging optics and an object having a light source arranged thereon at a second position in space;

[0059] Figure 3 perspective view showing the imaging optics and two objects having light sources arranged thereon at different positions in space with an evaluation device;

[0060] Figure 4 perspective view showing the imaging optics and two objects having light sources arranged thereon at different positions in space according to Figure 3 perspective view showing the imaging optics and two objects having light sources arranged thereon at different positions in space according to

[0061] Figure 5 top view showing the imaging optics;

[0062] Figure 6 perspective view showing an arrangement of three imaging optics differently oriented relative to each other and a detected polar angle of an object in space; and

[0063] Figure 7 perspective view showing an arrangement of three imaging optics differently oriented relative to each other for detecting a position of an object in space. DETAILED DESCRIPTION

[0064] Figure 1 An imaging optics for imaging a light source 1 arranged on an object 5 onto a light-sensitive sensor 4 is shown, wherein the imaging optics has an optical diaphragm 2, a beam shaping optical element 3 in the form of a plano-concave cylindrical mirror and a light-sensitive sensor 4. As shown, the imaging optics images a slit opening 21 of the at least one optical diaphragm 2 onto the at least one light-sensitive sensor 4.

[0065] The at least one beam shaping optical element 3 is arranged in the optical beam path between the optical diaphragm 2 and the at least one light-sensitive sensor 4. The optical diaphragm 2 and the at least one light-sensitive sensor 4 are arranged outside the optical plane of the at least one beam shaping optical element 3 (see also Figure 4 ).

[0066] Due to the reflection at the beam shaping optical element 3 in the form of a plano-concave cylindrical mirror, the imaging optics has a folded beam path between the at least one optical diaphragm 2 and the at least one light-sensitive sensor 4. The optical diaphragm 2, the beam shaping optical element 3 and the light-sensitive sensor 4 are arranged at the corner points of a triangle, wherein the optical diaphragm 2 and the at least one light-sensitive sensor 4 are arranged spatially between the at least one light source 1 and the at least one beam shaping optical element 3.

[0067] In the illustrated embodiment, the photosensitive sensor 4 is constructed as a line sensor, having a longitudinal extension L1 along the longitudinal direction L. The longitudinal direction L extends laterally relative to the cylindrical axis C of the beamforming optical element 3, and particularly perpendicularly when viewed in projection along the optical beam path. The slit opening 21 extends along the longitudinal direction H parallel to the cylindrical axis C of the beamforming optical element 3.

[0068] The at least one photosensitive sensor 4 is arranged substantially at a distance r from the at least one beamforming optical element 3, the distance being less than the radius of curvature R of the at least one beamforming optical element 3, wherein the radius of curvature R corresponds to the radial distance of the beamforming optical element 3 from the cylindrical axis C (see [reference needed]). Figure 4 and Figure 5 In the illustrated embodiment, the distance r essentially corresponds to half of the radius of curvature R.

[0069] The at least one optical stop 2 is arranged substantially at a distance d from the at least one beamforming optical element 3, the distance being less than the radius of curvature R of the at least one beamforming optical element 3, wherein the radius of curvature R corresponds to the radial distance of the beamforming optical element 3 from the cylindrical axis C (see [reference needed]). Figure 4 and Figure 5 In the embodiment shown, the distance d essentially corresponds to half of the radius of curvature R.

[0070] In an object 5 having a light source 1 arranged thereon Figure 1 In the position shown, a light beam emitted from object 5 passes through aperture opening 21 at a polar angle phi1 (measured here, for example, relative to the normal to the plane of optical aperture 2) around the longitudinal direction H of optical aperture 2. The emitted light is incident on the longitudinal extension L1 of sensor 4 at position x1.

[0071] Figure 2 It shows something similar to Figure 1 The diagram illustrates a beam of light emitted from an object 6 having a light source 1 arranged thereon, passing through the aperture opening 21 at a polar angle phi2 (again measured relative to the normal to the plane of the optical aperture 2) around the longitudinal direction H of the optical aperture 2. The emitted light is incident on the sensor 4 at position x2 along the longitudinal extension L1 of the sensor 4.

[0072] Figure 3 It shows something similar to Figure 1 and Figure 2a top view of the imaging optics, wherein the arrangement of the imaging optics and the objects 5, 6 can correspond to Figure 6 and Figure 7 The positions of the objects 5, 6 and the light source 1 in space and, if necessary, their movements can be characterizable by determining the respective angles with respect to different spatial directions and, if necessary, their changes, as shown in

[0073] Figure 4 A side view of the imaging optics and two objects 5, 6 with a light source 1 arranged thereon at different positions in space is shown, wherein the arrangement of the imaging optics and the objects 5, 6 can correspond to Figure 3 . The distances R, r, d and the angles phi1, phi2 are shown here in projection. The polar angles phi1, phi2 with respect to the normal to the plane of the optical stop 2 of the light beam emitted from the object 5, 6 with the light source 1 can be determined from the positions x1, x2 of the incidence along the longitudinal extension L1 of the at least one light-sensitive sensor 4.

[0074] Figure 5 A top view of the imaging optics is shown, wherein the arrangement of the imaging optics and the objects 5, 6 can correspond to Figure 3 . The distances R, r, d and the angles phi1, phi2 are shown in projection.

[0075] In order to detect the position and / or the movement of the at least one object 5, 6 in space, the light emitted by the at least one object 5, 6 can pass through the at least one optical stop 2, be reflected by the at least one beam-shaping optical element 3 in the form of a piano-concave cylindrical mirror and be incident on and detected by the at least one light-sensitive sensor 4.

[0076] The light emission from a plurality of objects 5, 6 or light sources 1 can be timed sequentially in order to be able to distinguish between the objects 5, 6 and the light sources 1. Different spectral distributions and differently sensitive sensors can also be considered.

[0077] The light emitted by the at least one object 5, 6 can pass through the at least one optical diaphragm 2 at different polar angles phi1, phi2 around the longitudinal direction H of the optical diaphragm 2 as shown, be incident on the cylindrical surface section of the plano-cylindrical mirror according to the polar angles phi1, phi2 and be reflected, be incident at positions x1, x2 along the longitudinal extension L1 of the at least one photosensitive sensor 4 configured as a line sensor or a surface sensor according to the polar angles phi1, phi2 and be detected, and the respective polar angle phi1, phi2 thus be determined by the evaluation device 7 from the positions x1, x2 of incidence along the longitudinal extension L1 of the at least one photosensitive sensor 4.

[0078] Figure 6 A perspective view of an arrangement of three imaging optics oriented differently relative to one another is shown, as well as the polar angles phi1 detected by the imaging optics respectively in space of an object 5 having a light source 1 arranged thereon. The polar angles phi1 detected respectively are measured here with respect to the normal to the plane of the respective optical diaphragm 2, analogously to the figures discussed previously.

[0079] In the case where the dimensions and spatial orientation of the arrangement of imaging optics are known or are detected accordingly, then the position of the object 5 in space can be determined trigonometrically from the angles a1, a2, a3 relative to a predetermined or predeterminable spatial direction of the polar angles phi1 detected respectively. The determination can be made by the evaluation device 7 shown exemplary in Figure 3

[0080] Figure 7 A perspective view of an arrangement of three imaging optics for detecting the position of an object 5 in space oriented differently relative to one another is shown. The position of the object 5 in space can be characterized by the angles a1, a2, a3 detected.

[0081] List of reference signs

[0082] 1 light source

[0083] 2 optical diaphragm

[0084] 3 beam shaping optical element

[0085] 4 photosensitive sensor

[0086] 5 object

[0087] 6 object

[0088] 7 evaluation device

[0089] 21 slit opening

[0090] H1 height of the slit opening

[0091] H longitudinal direction ​

[0092] width of the bl slot opening

[0093] b transverse direction

[0094] phi1 polar angle

[0095] phi2 polar angle

[0096] c column axis

[0097] r radius of curvature

[0098] l longitudinal direction

[0099] l1 longitudinal extension

[0100] xl position

[0101] x2 position

[0102] r distance

[0103] d distance

Claims

1. Imaging optics for imaging at least one light source (1) onto at least one light-sensitive sensor (4), wherein The imaging optics have at least one optical stop (2), at least one beam shaping optical element (3) and the at least one light-sensitive sensor (4), characterized in that the at least one beam shaping optical element (3) is a plano-concave cylindrical mirror, in particular a plano-concave circular cylindrical mirror.

2. Imaging optics according to the preceding claim, wherein The at least one beam shaping optical element (3) is arranged in the optical beam path between the at least one optical stop (2) and the at least one light-sensitive sensor (4).

3. Imaging optics according to one of the preceding claims, wherein The at least one optical stop (2) and / or the at least one light-sensitive sensor (4) is / are arranged at least partially outside the optical plane of the at least one beam shaping optical element (3).

4. Imaging optics according to one of the preceding claims, wherein The imaging optics have a folded beam path between the at least one optical stop (2) and the at least one light-sensitive sensor (4).

5. Imaging optics according to one of the preceding claims, wherein The imaging optics image the slit opening (21) of the at least one optical stop (2) onto the at least one light-sensitive sensor (4).

6. Imaging optics according to one of the preceding claims, wherein The at least one light-sensitive sensor (4) is a line sensor or a face sensor.

7. Imaging optics according to one of the preceding claims, wherein The at least one optical stop (2) is a slit stop having a slit opening (21) with a predetermined or predeterminable width (B1) along a transverse direction (B) and a predetermined or predeterminable height (H1) along a longitudinal direction (H).

8. Imaging optics according to the preceding claim, wherein The slit opening (21) extends parallel to the cylinder axis (C) of the beam shaping optical element (3) along the longitudinal direction (H).

9. Imaging optics according to one of the preceding claims, wherein The at least one light-sensitive sensor (4) is a line sensor or a face sensor having a longitudinal extension (L1) along a longitudinal direction (L) of the sensor (4), and the longitudinal direction (L) extends transversely to the cylinder axis (C) of the beam shaping optical element (3), in particular at right angles with respect to the cylinder axis.

10. Imaging optics according to one of the preceding claims, wherein The at least one light-sensitive sensor (4) is configured as a line sensor or a face sensor having a longitudinal extension (L1) along a longitudinal direction (L) of the sensor (4), and a polar angle (phi1, phi2) around the longitudinal direction (H) of the optical stop (2) can be determined from a position (x1, x2) of the imaged light source (1) along the longitudinal extension (L1) of the at least one light-sensitive sensor (4).

11. The imaging optics according to one of the preceding claims, wherein The at least one light-sensitive sensor (4) is arranged substantially at a distance (r) from the at least one beam shaping optical element (3), the distance being smaller than the radius of curvature (R) of the at least one beam shaping optical element (3), preferably smaller than three quarters of the radius of curvature (R), particularly preferably smaller than two thirds of the radius of curvature (R), in particular substantially half the radius of curvature (R), and / or The at least one optical diaphragm (2) is arranged essentially at a distance (d) from the at least one beam shaping optical element (3), which distance is smaller than the radius of curvature (R) of the at least one beam shaping optical element (3), preferably smaller than three quarters of the radius of curvature (R), particularly preferably smaller than two thirds of the radius of curvature (R), in particular essentially half the radius of curvature (R).

12. Imaging optics according to one of the preceding claims, wherein The at least one optical diaphragm (2), the at least one beam shaping optical element (3) and the at least one light-sensitive sensor (4) are arranged at the corner points of a triangle, and / or The at least one optical diaphragm (2) and the at least one light-sensitive sensor (4) are arranged spatially between the at least one light source (1) and the at least one beam shaping optical element (3).

13. Use of an imaging optics according to one of the preceding claims for detecting the position and / or the movement of at least one object (5, 6) in space, wherein At least one light source (1) is arranged on the at least one object (5, 6).

14. Method for detecting the position and / or movement in space of at least one object (5, 6), in particular using imaging optics according to one of claims 1 to 12, wherein Light emitted by the at least one object (5, 6) passes through at least one optical diaphragm (2), is reflected by at least one beam shaping optical element (3) in the form of a plano-concave cylindrical mirror, is incident on and detected by at least one light-sensitive sensor (4).

15. Method for detecting the position and / or movement in space of at least one object (5, 6) according to the preceding claim, wherein Light emitted by the at least one object (5, 6) passes through the at least one optical diaphragm (2) with a polar angle (phi1, phi2) about the longitudinal direction (H) of the optical diaphragm (2), is incident on and reflected from a cylindrical peripheral section of the plano-concave cylindrical mirror according to the polar angle (phi1, phi2), is incident on and reflected from a position (x1, x2) along a longitudinal extension (L1) along the longitudinal direction (L) of the light-sensitive sensor (4) according to the polar angle (phi1, phi2), The polar angle (phi1, phi2) is determined by an evaluation device (7) of the imaging optics from the incident position (x1, x2) along the longitudinal extension (L1) along the longitudinal direction (L) of the at least one light-sensitive sensor (4).

Images