An automatic leveling system includes a platform, a leveling device provided on the platform, a loading tray provided on the leveling device, three reflecting devices provided on the loading tray, an image acquisition device provided above the loading tray, a height positioning device provided on an end of the image acquisition device facing the loading tray, a light source configured to emit light, and a controller coupled to the image acquisition device. The height positioning device processes light emitted by the light source into three paths of light to the three reflecting devices. The three reflecting devices reflect the three paths of light. The image acquisition device acquires the three paths of reflected light into a light signal. The controller detects deflection values of the loading tray according to the light signal and controls the leveling device to level the loading tray.

A detection device adapted to detect lens surface and a stitching interferometer including the same are disclosed. The detection device includes: a cylindrical detection frame comprising support bosses arranged on an inner wall of the detection frame in a circumferential direction of the detection frame, the lens to be detected being placed on the support bosses; and a plurality of support units mounted at a bottom of the detection frame in the circumferential direction of the detection frame, each of the support units comprising: a support mechanism configured to be movable in an axial direction of the detection frame and cooperate with the support bosses so as to support the lens to be detected together; and a balance mechanism configured to provide a balancing force for balancing with force of the support mechanism for supporting the lens to be detected, so that axial support force of each supporting unit for the lens to be detected is equal to axial support force of each support boss for the lens to be detected in both cases where the axial direction of the detection frame is parallel to a gravity direction of the lens to be detected and inclined with respect to the gravity direction of the lens to be detected.

A test fixture includes a base and an adjustable structure. The adjustable structure includes a limiting block, a locking block, and a fixing member. The limiting block is disposed on the base. The locking block is disposed on the base and abuts an edge of the limiting block to lock the limiting block in position. The fixing member is disposed on the limiting block to fix the limiting block on the base. When the locking block is moved from a first position to a second position, the locking block unlocks the limiting block, the fixing member is loosened, and the limiting block can rotate on the base. After the limiting block is rotated, the locking block is moved from the second position to the first position to lock the limiting block, and the fixing member is tightened to fix the limiting block on the base.

A camera-testing box for testing optical properties of an image-capturing device includes a box body, a light source, a photographic film, a mask, and a base. The light source is disposed inside the light-free box body. The photographic film is disposed on a side of the light source inside the box body. The mask is disposed on a side of the photographic film away from or facing the light source, and the mask includes a transparent area and a shielding area to reduce flare-causing light reflected by screws and other extraneous objects in the camera-testing box. The base is disposed inside the box body, and on a side of the mask away from the light source. The base supports the to-be-tested image-capturing device.

A dimming tester station for testing an optical object, the optical object disposed along an axis represented by a central axis of the optical object, the dimming tester station including a motion stage for supporting the optical object, wherein the optical object is disposed between at least one camera with an entrance pupil of the at least one camera disposed in a first plane and a light emitting panel configured to emit light through a front surface disposed in a second plane, the central axis is substantially perpendicular to the first plane and the second plane, the entrance pupil of the at least one camera is disposed in an orientation facing at least a portion of the front surface, the motion stage is configured to be adjustable such that the location of the optical object from each of the first plane and the second plane is alterable.

The techniques of this disclosure relate to determining an optical characteristic of a camera. The device includes a housing that receives a test fixture retaining a camera. The housing includes a first segment and a second segment creating a chamber surrounding the camera. The first segment is attached to the test fixture and defines a first orifice located in a side of the first segment. The first orifice directs a flow of a gas out of the chamber. The second segment defines a second orifice located in a first side of the second segment to direct the flow of the gas into the chamber. An aperture is located in a second side of the second segment and positioned opposite the test fixture to define a field of view that includes a camera target. The aperture receives a lens barrel of the camera and enables the determination of the optical characteristic.

A level correction system includes a first adjustment device, a chuck device provided on the first adjustment device, a first reflective device provided on the chuck device, a second adjustment device, a carrying table provided on the second adjustment device, a second reflective device provided on the carrying table, a laser emitter configured to emit incident laser light, a laser receiver, and a controller. The first reflective device and the second reflective device are used to reflect the incident laser light to form a reflected laser light. The laser receiver is used to receive the reflected laser light. The controller is used to determine a height of the chuck device or the carrying table and whether a center point of a reflected light spot formed by the reflected laser light is offset from a center point of an incident light spot formed by the incident laser light.

The invention provides a device and method for calibrating a lens distortion center. The device includes a rotating frame, a first driving mechanism and a second driving mechanism. The first driving mechanism is connected with the rotating frame for driving the rotating frame to rotate. A calibration plate is arranged in the rotating frame and connected with the rotating frame through a rotating shaft. The second driving mechanism is connected with the calibration plate for driving the calibration plate to rotate relative to the rotating frame, and a lens placement platform is provided at a front end of the calibration plate. The device of the invention can adjust the relative position between the calibration plate and the lens through the cooperation of the first driving mechanism with the second driving mechanism, so that a lens can acquire different images to achieve calibration of lens distortion.

An environmental testing laboratory includes a supply port allowing air-conditioned air at a predetermined temperature supplied through the supply port at a predetermined speed, a discharge port facing the supply port and allowing the air be discharged through the discharge port, a flow passage disposed between the supply port and the discharge port and allowing the air to pass through the flow passage part, an installation part disposed at a center of the flow passage and allowing a measurement target in the installation part, and a flow straightening member which is disposed between a sidewall surface of the flow passage part and the installation part and which is configured to straighten an airflow of the air-conditioned air. The sidewall surface of the flow passage part and the first flow straightening member are disposed in parallel with the airflow of the air-conditioned air from the supply port to the discharge port.

Method for determining a parameter of an optical equipment, the method comprising: an optical equipment positioning step, during which an optical equipment comprising a pair of optical lenses mounted on a spectacle frame is positioned in a first position, a portable electronic device positioning step, during which a portable electronic device comprising an image acquisition module is positioned in a second position determined and/or known relatively to the first position so as to acquire an image of a distant element seen through at least part of the optical lenses of the optical equipment in the first position, a parameter determining step, during which at least one optical parameter of the optical equipment is determined based on the image of a distant element seen through at least part of the optical lenses of the optical equipment in the first position.