Abstract: A method comprising determining a quantitative dispersion image of an object based on a set of quantitative phase images, each quantitative phase image of the set of quantitative phase images having been obtained with a respective different illumination light wavelength.

Abstract: An optical device for capturing an image of a scene, the optical device comprising: a plurality of image sensors each operable to capture a respective initial image of the scene; a lens arrangement operable to receive light from the scene and to form each initial image on each respective image sensor, each image sensor being located at a different respective distance from the lens arrangement; and an image processor operable to generate the captured image of the scene on the basis of image data from one or more of the captured initial images.

Abstract: An imaging device for producing images of a scene, the imaging device comprising: a first and a second hyperchromatic lens being arranged in a stereoscopic configuration to receive light from the scene; image sensor circuitry configured to capture a first and second image of the light encountered by the first and the second lens respectively; processor circuitry configured to: produce depth information using the captured first and second images of the scene and produce a resultant first and second image of the scene using both the captured first and second image and the depth information.

Abstract: The present disclosure generally pertains to a polarization imaging system having: an imaging portion having a color channel element of a first color type and a color channel element of a second color type; and a light polarization portion configured to: provide a first light polarization of a first polarization type for the first color type and a second light polarization of the first polarization type for the second color type; and convert a second polarization type into the first polarization type, whereby the second polarization type is detectable in the imaging portion

Abstract: An imaging device for use with an endoscope, the imaging device comprising: a lens arrangement operable to receive light from a scene captured by the endoscope and to form an image of the scene using the received light; an image sensor operable to capture the image of the scene formed by the lens arrangement; a birefringent device positioned along an optical path between the endoscope and the image sensor, wherein the birefringent device comprises birefringent material arranged in a plurality of concentric rings, and wherein the birefringent material of each of the concentric rings is configured such that the polarisation directions of an ordinary ray and an extraordinary ray of light from the scene which travels through the birefringent material are different for at least two of the plurality of concentric rings; and an image processor operable to process the captured image to generate an output image.

Abstract: An imaging device for converting a first image into a plurality of second images, the imaging device comprising a light receiving unit having a first aperture configured to receive light of the first image, a light reflecting unit configured to reflect the light received by the light receiving unit along a number of paths having a predetermined number of reflections within the light reflecting unit according to a portion of the first aperture from which the light originated, and a light output unit configured to output at least a subset of the paths of light reflected by the light reflecting unit as a plurality of second images, the second images having a focal length associated with the predetermined number of reflections experienced by the corresponding paths of light through the light reflecting unit.

Abstract: An optical device for capturing an image of a scene, the optical device comprising: a plurality of image sensors each operable to capture a respective initial image of the scene; a lens arrangement operable to receive light from the scene and to form each initial image on each respective image sensor, each image sensor being located at a different respective distance from the lens arrangement; and an image processor operable to generate the captured image of the scene on the basis of image data from one or more of the captured initial images.

Abstract: An optical device for capturing an image of a scene, the optical device comprising: a plurality of image sensors each operable to capture a respective initial image of the scene; a lens arrangement operable to receive light from the scene and to form each initial image on each respective image sensor, each image sensor being located at a different respective distance from the lens arrangement; and an image processor operable to generate the captured image of the scene on the basis of image data from one or more of the captured initial images.

Abstract: An imaging device for producing images of a scene, the imaging device comprising: a first and a second hyperchromatic lens being arranged in a stereoscopic configuration to receive light from the scene; image sensor circuitry configured to capture a first and second image of the light encountered by the first and the second lens respectively; processor circuitry configured to: produce depth information using the captured first and second images of the scene and produce a resultant first and second image of the scene using both the captured first and second image and the depth information.

Abstract: An imaging device for use with an endoscope, the imaging device comprising: a lens arrangement operable to receive light from a scene captured by the endoscope and to form an image of the scene using the received light; an image sensor operable to capture the image of the scene formed by the lens arrangement; a birefringent device positioned along an optical path between the endoscope and the image sensor, wherein the birefringent device comprises birefringent material arranged in a plurality of concentric rings, and wherein the birefringent material of each of the concentric rings is configured such that the polarisation directions of an ordinary ray and an extraordinary ray of light from the scene which travels through the birefringent material are different for at least two of the plurality of concentric rings; and an image processor operable to process the captured image to generate an output image.

Abstract: An optical device for capturing an image of a scene, the optical device comprising: a plurality of image sensors each operable to capture a respective initial image of the scene; a lens arrangement operable to receive light from the scene and to form each initial image on each respective image sensor, each image sensor being located at a different respective distance from the lens arrangement; and an image processor operable to generate the captured image of the scene on the basis of image data from one or more of the captured initial images.

Abstract: An imaging system includes an optical unit that captures, from a scene, sets of first images as well as sets of second images. The scene is illuminated with non-structured light when the sets of first images are captured and illuminated with structured light when the sets of second images are captured. A pattern processing unit generates, from the second images, a recovered shadow pattern from a shadow pattern projected onto the scene during illumination with structured light, wherein at least one motion-compensated reference image is used. A depth processing unit obtains depth information on the basis of the recovered shadow pattern.

Abstract: An imaging system includes an optical unit that captures, from a scene, first images indifferent wavelength ranges when the scene is illuminated with not-structured light and second images of different wavelength ranges when the scene is illuminated with structured light. Thereby an imaging lens unit with longitudinal chromatic aberration is arranged between the scene and an imaging sensor unit. A depth processing unit may generate depth information on the basis of the second images by using optical triangulation. A sharpness processing unit uses the depth information to generate an output image by combining the first images. The optical unit of the imaging, system may be implemented in an endoscope.

Abstract: An imaging device for converting a first image into a plurality of second images, the imaging device comprising a light receiving unit having a first aperture configured to receive light of the first image, a light reflecting unit configured to reflect the light received by the light receiving unit along a number of paths having a predetermined number of reflections within the light reflecting unit according to a portion of the first aperture from which the light originated, and a light output unit configured to output at least a subset of the paths of light reflected by the light reflecting unit as a plurality of second images, the second images having a focal length associated with the predetermined number of reflections experienced by the corresponding paths of light through the light reflecting unit.

Abstract: An imaging system (500) includes an optical unit (100) that captures, from a scene (900), sets of first images (RWL, GWL, BWL) as well as sets of second images (RSL, GSL, BSL), wherein the scene (900) is illuminated with non-structured light when the sets of first images (RWL, GWL, BWL) are captured and wherein the scene (900) is illuminated with structured light when the sets of second images (RSL, GSL, BSL) are captured. A pattern processing unit (200) generates, from the second images (RSL, GSL, BSL), a recovered shadow pattern from a shadow pattern projected onto the scene (900) during illumination with structured light, wherein at least one motion-compensated reference image is used. A depth processing unit (300) obtains depth information (DI) on the basis of the recovered shadow pattern.

Abstract: An imaging system (500) includes an optical unit (100) that captures, from a scene (900), first images indifferent wavelength ranges when the scene (900) is illuminated with not-structured light and second images of different wavelength ranges when the scene (900) is illuminated with structured light. Thereby an imaging lens unit (112) with longitudinal chromatic aberration is arranged between the scene (900) and an imaging sensor unit (118). A depth processing unit (200) may generate depth information (DI) on the basis of the second images by using optical triangulation. A sharpness processing unit (300) uses the depth information (DI) to generate an output image (OImg) by combining the first images. The optical unit (100) of the imaging system (500) may be implemented in an endoscope, by way of example.

Abstract: An optical element (100), comprises a first surface (110) having a first reflective coating (310) having a first reflectivity greater than 0 and smaller than or equal to 100% in a first wavelength range, and a second surface (120) having a second reflective coating (320) having a reflectivity greater than 0 and smaller than or equal to 100% in a second wavelength range, wherein a portion of the second wavelength range does not lie in the first wavelength range and the first and second surface are aligned along a first and a second plane, respectively, the first and second plane intersecting at an angles a smaller than 90° and greater than 0°.

Abstract: Laser projection device comprising an image generating unit, intermediate imaging optics configured to generate an intermediate image at an image focal plane (210), an image diffusing element (300) and a projection lens (400) with an object focal plane (410), wherein the image diffusing element (300) is arranged in the image focal plane (210) and in the object focal plane (410) and comprises a superimposed microstructure (310) formed of constituent parts (311), which are regularly distributed within a surface plane (320) of the image diffusing element (300).

Abstract: A projector arrangement includes a first image generation and projection unit and a second image generation and projection unit. A first or two-dimensional projection/display mode and a second stereoscopic or projection/display mode can be realized by the cooperating first and second image generation and projection units. The second image generation and projection unit is configured to receive waste light from the first image generation and projection unit and to base the generation of its respective second image on the waste light.

Abstract: An illumination device for uniformly illuminating an image generating micro-display that includes a coherent light source, a beam shaping and speckle reduction device located on an optical path between said coherent light source and said image generating micro-display, wherein the beam shaping and speckle reduction device includes a dynamic diffractive optical element, and a processor which is configured to control said dynamic diffractive optical element so that a sequence of different hologram patterns is generated on said dynamic diffractive optical element, the different hologram patterns being uncorrelated to each other.