35results about How to "Test fit" patented technology

The invention provides a device capable of judging the optical wave deformation direction in an optical homogeneity test with low cost. The optical glass optical homogeneity test device comprises a Fizeau interferometer. A direction determining standard sample is disposed between a beam splitter and a reflector on the Fizeau interferometer. The invention directly arranges the direction determiningstandard sample between the beam splitter and the reflector on the Fizeau interferometer. The device has the advantages of simple structure, convenient maintenance, low cost and convenient test method and is in particular suitable to test of the large optical glass.

The present application discloses an ISO precision test method and a test system for multi-axis medical interventional treatment equipment. In the method, a first light-emitting device and a second light-emitting device are arranged on the multi-axis medical interventional treatment device, and the paths of the light beams emitted by the first light-emitting device and the second light-emitting device respectively coincide with the paths of the rays emitted by the interventional treatment device , placing an ISO ball on the path of the light beams respectively emitted by the first light emitting device and the second light emitting device, the diameter of the ISO ball is equal to the required ISO area, judged by the positional relationship between the visible light beam and the ISO ball Whether the motion accuracy of the frame meets the requirements, so the test results can be obtained quickly, the measurement results are intuitive, and the operation is easy. In addition, it is suitable for the test of the suspended frame, and the laser acquisition equipment is no longer needed, which makes the cost low.

The invention belongs to the technical field of automobile testing, particularly relates to a system for testing field performance of a tire pressure monitoring system (TPMS) and aims at solving the problem that field performance of an automobile cannot be tested during road driving in the prior art. The system is characterized by comprising an actuator and a controller, wherein the actuator is used for measuring the internal pressure of all tires in real time and transmitting pressure signals to the controller, and signals indicating tire pressure in a driving state are generated under the control of control signals of the controller; the controller receives the tire pressure signals sent from the actuator, the tire pressure signals are processed according to set control flow, and then control signals are sent to the actuator to control the actuator to act to complete measurement and regulation of tire pressure. According to the system provided by the invention, a tire pressure closed-loop control system based on a practical gas circuit is established by virtue of the actuator and the controller, closed-loop regulation is performed on the gas circuit according to a difference between target tire pressure and current tire pressure, and thus a driving pressure regulation function is achieved under the condition of generating no communication interference.

The invention provides an AR imaging system virtual image distance testing method and device. The method comprises the following steps: calibrating a camera to acquire a corresponding relation betweena Focus value at each location and the virtual image distance; adjusting an adjustable lens by using the Focus value of the first preset stepping, enabling the camera to perform the first shooting onthe virtual image formed by the to-be-tested AR product, thereby acquiring the Focus value of the picture with the highest definition in the first shot picture; taking the acquired Focus value as thecenter, and adjusting the adjustable lens of the camera by using the second preset stepping, enabling the camera to perform the second shooting on the virtual image formed by the to-be-tested AR product, and acquiring the virtual image distance of the to-be-tested AR product according to the Focus value of the picture with the highest definition in the second shot picture, and the corresponding relation between the Focus value of each location and the virtual image distance. Through the method provided by the invention, the virtual image distance of the AR product can be tested, and the testing precision is high, the cost is low, the high virtual image distance testing efficiency is realized, and the method is suitable for testing the virtual image distance of the large-batch AR products.

The invention discloses a head-mounted display lens component testing machine, which comprises a clamping part for fixing and supporting the lens component, and is used for driving the clamping part to move on a horizontal plane along a direction perpendicular to the optical axis of the lens component. The first driving mechanism and the image receiving device arranged on one side of the clamping part, the first driving mechanism drives the clamping part to move and then drives the lens assembly to move so that the optical axis of the lens assembly is in line with the The optical axes of the image receiving devices are aligned. In the head-mounted display lens component testing machine of the present invention, the image receiving device is arranged at the position of the human eye, and replaces the human eye to receive the image imaged on the display through the lens component and take pictures to obtain the relevant information of the head-mounted display lens component. information, especially for testing optical components in head-mounted displays.

The invention relates to a lens testing and calibration device, which includes a base, a test seat and a camera mounting seat. A connecting lens barrel is disposed on a camera. The lens testing and calibration device also includes a close-up lens placement rotary disc and more than two groups of test board device. The close-up lens placement rotary disc is connected onto the test seat and is provided with a plurality of close-up lens placement spaces. Each group of test board device includes a moving seat connected slidably with the base and a test board assembly mounted on the moving seat and capable of covering a field angle range of a lens under test or moving away from the field angle range of the lens under test. By use of different movable test boards and close-up lenses mounted on different positions of the close-up lens placement rotary disc, the device can quickly test and calibrate lenses of different focal distances only by slightly moving the test boards and rotating the close-up lens placement rotary disc in the case that a tester is not required to move back and forth with the test seat; and is not only simple and quick in operation and high in production efficiency, but also light in overall weight and easy to carry and transport.

The invention discloses a ball transmitting device for testing the sports field capable of ensuring the serving speed consistent with an angle and a set value to ensure the accurate test result with simple structure and easy operation. A fixation armbrace is connected with a barrel-type casing by a height and angle adjustment device. A baffle in the barrel-type casing divides the cavity of the barrel-type casing into a ball transmitting cavity and a gas storage cavity. A gas inlet is set at the back-end of the barrel-type casing and connected with the output end of a gas compressor by a releasing valve, and another output end of the gas compressor is communicated with the gas storage cavity. An inner cylinder is axially fixed in the gas storage cavity and the front-end of the inner cylinder is communicated with the ball transmitting cavity and a bidirectional pneumatic valve is set between the back-end of the inner cylinder and the gas inlet.