A spectacle lens which has permanent markings is mounted on a mounting, in particular a suction mounting. The apparent location of the permanent markings is detected on the spectacle lens with a detection device. Additionally, the spectacle lens is illuminated eccentrically with respect to an optical axis of the detection device using eccentric light sources. Reflections from the lights sources on the spectacle lens are likewise detected. On the basis of the detected reflections and the apparent location of the permanent markings, the position and/or orientation of the mounted spectacle lens are determined.

A method, a computer program product, and a system for determining an optical parameter of an optical lens as well as a related method for producing the optical lens by adjusting the optical parameter are disclosed. The method includes: capturing an image picturing the optical lens by using a camera; and determining an optical parameter of the optical lens by processing the image, wherein the camera generates a signal related to a position of a focus, and the optical parameter of the optical lens is determined by using the signal related to the position of focus. The method and the system allow determining the optical parameter of the optical lens in a direct fashion by applying the signal related to the position of the focus as generated by the camera as a measured value for the optical parameter of the optical lens.

Some demonstrative embodiments include apparatuses, systems and/or methods of determining one or more optical parameters of a lens of eyeglasses. For example, a product may include one or more tangible computer-readable non-transitory storage media including computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement operations of determining one or more optical parameters of a lens of eyeglasses, The operations may include processing at least one image of an object captured via the lens; and determining the one or more optical parameters of the lens based on the at least one image.

A workpiece holder, measuring device, and a method for executing a measurement by using the workpiece holder. The workpiece holder is configured to hold a workpiece with two opposite arranged workpiece surfaces to be measured in a way that both are accessible by a moveable probe unit and can thus be measured in one setting of the workpiece. For this the workpiece holder comprises a support and a holding body. The holding body has a holding end away from the support with at least one holding surface at which the workpiece is held. In the holding body a free space is formed that adjoins the workpiece surface facing the support when a workpiece is held and makes the workpiece surface accessible for measuring or probing. The accessibility for the probe unit is provided by a transverse channel extending obliquely or orthogonally to the longitudinal axis of the workpiece holder.

A method for measuring a position of a target surface provided with portions for position determination thereon, wherein a diffuse reflectance of the target surface is 0.1% or less, and a diffuse reflectance of the portions for position determination is 5% or more, and wherein the target surface is configured such that a tangential plane at any point on the target surface where each of the portions for position determination is installed forms an arbitrary angle between 15 degrees and 75 degrees inclusive with a certain direction, the method including the steps of illuminating the target surface with parallel light in the certain direction; determining positions of border lines of the plural portions for position determination from an image of the target surface; and determining the position of the target surface from the positions of the border lines of the plural portions for position determination.

A visual simulation system includes a non-transitory computer-readable memory that stores computer-executable instructions and one or more processors individually or collectively configured to access the memory. The one or more processors are individually or collectively configured to execute the computer-executable instructions to generate visual data of a virtual environment obtained by a simulated visual sensor associated with a simulated movable object, obtain one or more parameters of a physical visual sensor corresponding to the simulated visual sensor, the one or more parameters comprising a noise-related parameter, and transform the generated visual data to simulate an effect of the one or more parameters.

Disclosed is a method for checking at least one geometric characteristic and one optical characteristic of a trimmed ophthalmic lens (10) including the following steps: a) arranging the trimmed ophthalmic lens on a support (110), b) capturing at least one image of the trimmed ophthalmic lens, c) determining, from the image, a measured geometric characteristic of the trimmed ophthalmic lens, d) determining at least one measured optical characteristic of the trimmed ophthalmic lens in a reference frame of the image captured in step b), e) comparing the measured geometric characteristic associated with the measured optical characteristic to a predefined desired ophthalmic lens model, including at least one desired geometric characteristic and one associated desired optical characteristic. Also disclosed is an associated checking device.

Provided is a relay lens including a plurality of relay optical systems that are arranged in a long, rigid tube along a longitudinal direction and that re-form an image, wherein each of the relay optical systems includes a pair of rod lenses that are disposed with a space therebetween in the longitudinal direction, a barrel that is disposed between the pair of rod lenses along the longitudinal direction, and a positive lens that is fixed to an inner side of the barrel and that has a positive refractive power; and a length of the barrel in the longitudinal direction is larger than a thickness of a peripheral edge of the positive lens in the longitudinal direction.

A device and a method for wavefront analysis. The device is designed for analyzing the wavefront of at least one light wave passing through an optical system, and has at least one illumination mask (105, 205, 305, 405, 406, 407), at least one first grating (120, 220, 320, 420), at least one second grating (130, 230, 330, 430) arranged in the predefined plane and at least one detector (140, 240, 340, 440) for detecting said superimposition pattern. The at least one first grating has at least one first grating structure and generates an interferogram in a predefined plane from a wavefront to be analyzed which proceeds from the illumination mask and passes through the optical system. The at least one second grating has at least one second grating structure and generates a superimposition pattern by the superimposition of the second grating structure with the interferogram generated by the first grating.

A system for detecting an alignment of a relay lens assembly and a combiner of a head-up display is disclosed. The system includes an illuminated reticle spatially coupled to the relay lens assembly, an optical sensor spatially coupled to the combiner, and a control module configured to receive an input from the optical sensor, determine a position of the combiner relative to the relay lens assembly based on the received input; and generate an output based on a determined position of the combiner relative to the relay lens assembly. In another system, the illuminated reticle is spatially coupled to the combiner, and the optical sensor is spatially coupled to the relay lens assembly. The system may also participate in a feedback loop with the head-up display to reduce jitter in the head-up display.