The disclosure describes various aspects of techniques for elliptical beam design using cylindrical optics that may be used in different applications, including in quantum information processing (QIP) systems. In an aspect, the disclosure describes an optical system having a first optical component having a first focal length, a second optical component having a second focal length and aligned with a first direction, and a third optical component having a third focal length and aligned with a second direction orthogonal to the first direction. The optical system is configured to receive one or more optical beams (e.g., circular or elliptical) and apply different magnifications in the first direction and the second direction to the one or more optical beams to image one or more elliptical Gaussian optical beams. A method for generating elliptical optical beams using a system as the one described above is also disclosed.

A levelling laser for generating a laser projection line on a surface is disclosed. The levelling laser includes an optical projection lens with a three-dimensional lens surface. The projection lens can be described in a three-dimensional coordinates system having three axes, X, Y and Z, arranged orthogonally to one another. The Z-axis coincides with the optical axis of the projection lens. The lens surface of the projection lens has a shape with a surface inclination angle rising monotonically along the X-axis. A corresponding projection lens is also disclosed.

A levelling laser for generating a laser projection line on a surface is disclosed. The levelling laser includes an optical projection lens with a three-dimensional lens surface. The projection lens can be described in a three-dimensional coordinates system having three axes, X, Y and Z, arranged orthogonally to one another. The Z-axis coincides with the optical axis of the projection lens. The lens surface of the projection lens has a shape with a surface inclination angle rising monotonically along the X-axis. A corresponding projection lens is also disclosed.

The present invention relates to a method for determining at least one optical property of a visual aid (e.g. eyeglasses) for a person, the method comprising the steps of: Observation of a test pattern (T) by the person through an tunable lens (20, 21) of a virtual reality (VR) and/or augmented reality (AR) headset (2) worn by the person, the tunable lens (20, 21) being positioned in front of an eye of the person, and adjusting at least one optical property of the tunable lens (20, 21) so that the person perceives the test pattern (T) as being sharp, or adjusting at least one optical property of the tunable lens (20, 21) until a sensor device (30, 31) detects accommodation of the eye of the person to the test pattern (T).

The present invention relates to a method for determining at least one optical property of a visual aid (e.g. eyeglasses) for a person, the method comprising the steps of: Observation of a test pattern (T) by the person through an tunable lens (20, 21) of a virtual reality (VR) and/or augmented reality (AR) headset (2) worn by the person, the tunable lens (20, 21) being positioned in front of an eye of the person, and adjusting at least one optical property of the tunable lens (20, 21) so that the person perceives the test pattern (T) as being sharp, or adjusting at least one optical property of the tunable lens (20, 21) until a sensor device (30, 31) detects accommodation of the eye of the person to the test pattern (T).

The invention relates to an optical imaging system (100) and a device for floating display, and a surround-view display device (2000). The optical imaging system (100) sequentially defines, along the optical axis thereof, an object plane (10), a first image plane (101) and a second image plane (102), and the optical imaging system (100) comprises at least one imaging unit (110) arranged between the object plane (10) and the first image plane (101) on the optical axis, with the at least one imaging unit (110) having different light converging capabilities in a first direction and in a second direction, and the first direction and the second direction being orthogonal to the optical axis, respectively; and a main diffusion screen (120) diverging light in the second direction, the optical imaging system (100) being configured such that a light beam from a point on the object plane (10) forms a line image in the first direction on the first image plane (101), and the light beam from a point on the object plane (10) forms a line image in the second direction on the second image plane (102), with the second image plane (102) being a floating image plane.

An optical element (100c), a mobile phone cover plate covering the optical element (100c) and a mold for manufacturing the optical element (100c). The optical element (100c) comprises: plural texture patterns (1c), at least one of the plural texture patterns (1c) having a concave structure or a convex structure, the at least one texture pattern (1c) containing at least one sub-texture pattern unit (11c, 12c), wherein the at least one texture pattern (1c) is of a curved shape. Hence, the texture patterns may produce a light shadow effect, which have a good visual effect, and when they are applied in the field of decoration, they are able to enhance a decoration effect, and make the decoration rich in visual senses and pictures vivid.

An optical element (100c), a mobile phone cover plate covering the optical element (100c) and a mold for manufacturing the optical element (100c). The optical element (100c) comprises: plural texture patterns (1c), at least one of the plural texture patterns (1c) having a concave structure or a convex structure, the at least one texture pattern (1c) containing at least one sub-texture pattern unit (11c, 12c), wherein the at least one texture pattern (1c) is of a curved shape. Hence, the texture patterns may produce a light shadow effect, which have a good visual effect, and when they are applied in the field of decoration, they are able to enhance a decoration effect, and make the decoration rich in visual senses and pictures vivid.

In various embodiments, one or more prisms are utilized in a wavelength beam combining laser system to regulate beam size and/or to provide narrower wavelength bandwidth.

In various embodiments, one or more prisms are utilized in a wavelength beam combining laser system to regulate beam size and/or to provide narrower wavelength bandwidth.