Provided are a method and an apparatus of optical module assembly, where the method includes: when an optical module to be aligned images, controlling an alignment mechanism clamping a lens to be assembled to move in a set direction by a set movement step; when the alignment mechanism moves each time, collecting, by an image acquisition device, light spots imaged by the optical module to be aligned sequentially, and selecting a light spot with a minimum size from the collected light spots; determining an optimal position of the alignment mechanism according to at least two light spots before the light spot with the minimum size and at least two light spots thereafter; and controlling the alignment mechanism to move to the optimal position to align the lens to be assembled.

An optical alignment system and corresponding method measures tilt errors of one or more optical surfaces, including aspheric surfaces, using interference patterns created by an illumination of the edges of an optical surface. An exemplary optical alignment system comprises a test mount centered on (and configured to rotate about) an axis, a laser, a detector and a processing circuit. The laser directs laser light along the axis to illuminate a test surface of an optical assembly disposed in the test mount. The detector detects a tilt orbit of an interference pattern produced in a first image plane perpendicular to the axis when the test mount rotates about the axis. The first image plane is spaced from a second image plane (e.g., paraxial ray focus plane) by a difference Δh. The processing circuit determines a tilt error θ of the test surface from the detected tilt orbit and the difference Δh.

A car lens offset detection method and a car lens offset detection system are provided. The first image capturing device and the second image capturing device are disposed on a car, and the method includes: capturing a first image with use of a first image capturing device and capturing a second image with use of a second image capturing device; obtaining a plurality of first feature points from the first image according to a plurality of first predetermined positions and obtaining a plurality of second feature points from the second image according to a plurality of second predetermined positions; comparing feature values of the first feature points with feature values of the second feature points and determining whether the first feature points match the second feature points; in response to the first feature points not matching the second feature points, performing a calibration and warning operation.

The present disclosure relates to an apparatus for inspecting alignment of optical device including: an optical device comprising a housing having an optical path of the shape of a cylinder, a light source disposed inside the housing to provide an illumination light for inspection to a subject surface, and a collimating lens for converting the illumination light irradiated from the light source into a parallel light beam; and an alignment evaluator that is provided with a condensing lens for converting the parallel light beam into a focused light beam, and that is disposed in front of the optical device.

A spectacle lens with 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.

The present invention is directed to a polarizing filter (20), comprising a plurality of areas (25) for passing light, each area (25) being separated from the others, wherein each of the areas (25) is a linear polarizer and at least two of the areas (25) have a different polarization axis. The present invention is further directed to an apparatus (1) for determining an orientation of a lens polarization axis of a polarized lens (31) and using said polarizing filter (20) as well as a method of determining an orientation of a lens polarization axis of a polarized lens (31) using said apparatus (1).

A coupling method of an optical module is provided. A circuit board with a light emitting element emitting an output light and an output lens are provided. The light emitting element is covered by the output lens. The output lens is connected to an output meter. The output lens and the circuit board are moved relatively. An intensity of the output light is measured by the output meter. An output qualified region is defined based on a region where the output lens is located when the intensity of the output light is greater than an output requirement. The aforementioned steps are repeated for a predetermined number of times. The output lens and the circuit board are moved relatively in an intersection area of the output qualified regions. The output lens is fixed on the circuit board when the intensity of the output light is greater than the output requirement.

The present disclosure relates to a method for photometrical charting of a light source (Q, 3) clamped within a positioning device (1) and stationary relative to an object coordinate system (T) by means of a luminance density measurement camera (4) arranged stationary relative to a world coordinate system (W), wherein the light source (Q, 3) is moved between a first actual measurement position (P1′) and at least one further actual measurement position (P2′ to P5′) along a kinematic chain of the positioning device (1) within the world coordinate system (W), wherein a luminance density measurement image (81 to 85) describing the spatial distribution of a photometric characteristic within a measurement surface is recorded by means of the luminance density measurement camera (4) in each actual measurement position (P1′ to P5′) with the light source (Q, 3) turned on, and wherein the position and/or orientation of the object coordinate system (T) relative to the world coordinate system (W) is recorded in each actual measurement position (P1′ to P5′) in direct reference to the world coordinate system (W) without reference to the kinematic chain of the positioning device (1). Moreover, the present disclosure relates to the use of such a method for photometric charting of a headlight (3).

The present invention is directed to a polarizing filter (20), comprising a plurality of areas (25) for passing light, each area (25) being separated from the others, wherein each of the areas (25) is a linear polarizer and at least two of the areas (25) have a different polarization axis. The present invention is further directed to an apparatus (1) for determining an orientation of a lens polarization axis of a polarized lens (31) and using said polarizing filter (20) as well as a method of determining an orientation of a lens polarization axis of a polarized lens (31) using said apparatus (1).

The present invention discloses an aspheric lens eccentricity detecting device based on wavefront technology and a detecting method thereof. The device comprises: an upper optical fiber light source, an upper collimating objective lens, an upper light source spectroscope, an upper beam-contracting front lens, an upper beam-contracting rear lens, an upper imaging detector, an upper imaging spectroscope, an upper wavefront sensor, a lens-under-detection clamping mechanism, a lower light source spectroscope, a lower beam-contracting front lens, a lower beam-contracting rear lens, a lower imaging spectroscope, a lower wavefront sensor, a lower imaging detector, a lower collimating objective lens and a lower optical fiber light source. The present invention achieves non-contact detection, with no risk of damaging the lens, and there is no moving part in the device, so the system reliability and stability are high; and in the present invention, various eccentricity errors in the effective aperture of the aspheric lens can be detected at a time, thereby avoiding errors caused by splicing detection, and also greatly reducing the detection time, thus being applicable to online detection on an assembly line.