13 results about "Optical test" patented technology

The invention relates to a projection unit (110) for projecting a test pattern (140). Using the test pattern (140), the sharpness properties of an optical test object (X) can be tested. The projection unit (110) comprises a diffractive optical element shaped to generate a plurality of virtual test objects (142, 143) as the test pattern (140) in response to different excitation light (125, 135) coupled into the projection unit (110) simultaneously from one or more light sources (120, 130). Different of the test objects (142, 143) are arranged in different focal planes and at different solid angles from the perspective of the test object (X).

Optical networks and methods associated with optical networks for verifying network continuity. A method for verifying network continuity includes providing a fiber Bragg grating (FBG) device at a cable associated with a network, wherein the FBG device is configured to reflect a λ1 wavelength; sending an optical test signal into the cable from a location upstream of the FBG device, the optical test signal having a λ1 wavelength; and detecting a reflected signal associated with the λ1 wavelength to verify network connectivity to the FBG device and measure network insertion loss.

The utility model relates to a lamp test technical field, concretely is an aviation obstruction light optical testing device, including the casing, the front end of casing is provided with the light source, the front end of casing still is provided with the transparent baffle of covering light source, and the casing cooperation transparent baffle is fully closed and sets up. The utility model discloses through water pump can drive the heat exchange liquid in the water storage tank to flow in the condenser pipe, the heat exchange liquid in the condenser pipe can carry out heat exchange to the high temperature air in the casing at this moment, can provide suitable environment for light source and PLC circuit board, can avoid light source and PLC circuit board to appear the trouble because of high temperature, can improve the service life of light source and PLC circuit board, and the dust is isolated in the closed casing, can make the heat exchange liquid be fully refrigerated by semiconductor refrigeration piece when the heat exchange liquid backflow, and fan cooperation two air holes can guarantee that the air in the casing circulates and flows in the casing and transparent baffle, can make the cold air after heat exchange in the casing circulate and flow, can guarantee the cooling effect.

The aperture aperture calibration and testing system and method provided in this application describe a system where a control module controls an aperture motor via signals. The aperture motor adjusts the aperture mechanism to form the light-transmitting aperture. A camera captures an image of the light-transmitting aperture. The control module processes the image to calculate the actual light-transmitting diameter, and then uses optical formulas to calculate the aperture F-number. This eliminates the need for measurement in imaging instruments or optical test stands, resulting in a small, low-cost system that facilitates rapid deployment and mass production on production lines. The system employs an independent testing architecture, directly driving and testing the aperture mechanism without requiring the assembly of the entire lens, thus improving testing flexibility. The method describes adjusting the aperture aperture with the aperture motor, recording the motor's step count, obtaining the actual light-transmitting diameter through image processing, and calculating the aperture F-number by combining the camera's focal length with the actual light-transmitting diameter, achieving measurement without the need for testing equipment.

The application is a kind of augmented reality auxiliary heavy load high-precision rotation test method for vacuum low-temperature environment. The application relates to the technical field of optical precision testing and vacuum low-temperature engineering, and realizes the transparent intelligent control of the large optical test process in the vacuum low-temperature environment by combining the augmented reality technology, the virtual-real registration model, the active-passive composite thermal control and Smith prediction control algorithm, and the multi-source sensing data mapping and dynamic guidance algorithm. Compared with the prior art, the operation intuitiveness of the application is significantly improved, the installation and debugging efficiency is effectively improved, the operation failure rate is greatly reduced, the thermal control precision and stability are obviously enhanced, the system regulation time is shortened, the overshoot is reduced, the temperature control precision meets the requirements, and single long-time fault-free stable operation can be realized.

The utility model discloses a kind of optical module test equipment, it is related to optical communication technical field.Optical module test equipment in:first electric test interface is electrically connected with signal transceiver chip;Control chip is electrically connected with optical test device and optical test interface by light testing device;Control chip and signal transceiver chip are electrically connected;Control chip sends first test control signal to signal transceiver chip, and sends second test control signal to optical test device;Optical test device will be converted into second optical signal by first optical signal received through optical test interface, and second optical signal is sent to second to-be-tested optical module by optical test interface;Signal transceiver chip sends test electric signal to first to-be-tested optical module group by first electric test interface;And target electric signal sent by second to-be-tested optical module group is received by first electric test interface.The optical module test equipment provided by the utility model occupies smaller space and area, and failure is easy to troubleshoot, and cost is lower.

The application belongs to the technical field of optical non-contact measurement, and particularly relates to an optical test test section of a double-layer observation window, which comprises an outer cavity, an inner cavity, an observation window and a blowing device; an outer cavity for cooling airflow circulation is formed between the inner cavity and the outer cavity, and the inner cavity has an inner cavity for high-temperature and high-pressure test airflow circulation; the blowing device comprises a blowing inlet pipe, a fixed wall and a mounting plate; the mounting plate comprises a mounting cylinder and a mounting edge located at one end surface of the mounting cylinder, the mounting edge is sleeved on the inner side of the inner cavity, the fixed wall is mounted between the mounting cylinder and the inner cavity, the fixed wall, the mounting cylinder, the inner cavity and the mounting edge form a blowing cavity, the fixed wall is provided with an air inlet hole, the blowing inlet pipe is connected with the air inlet hole on the fixed wall through the outer cavity and the inner cavity, blowing gas is introduced into the blowing cavity, the mounting edge and the inner wall of the inner cavity form a blowing air gap, and the gas in the blowing cavity is blown to the observation window through the blowing air gap.

The invention relates to a projection unit (110) for projecting a test pattern (140). Sharpness characteristics of an optical test object (X) can be tested by using the test pattern (140). The projection unit (110) comprises a diffractive optical element, which is designed to produce a plurality of virtual test objects (142, 143) as the test pattern (140) in response to different excitation lights (125, 135) coupled into the projection unit (110) at the same time from one or more light sources (120, 130). In this case, different test objects (142, 143) are arranged in different focal planes and at different solid angles from the point of view of the test object (X).

The application provides a kind of fiber loop scale factor testing method based on distributed optical testing, belongs to optical measurement and optical fiber sensing technical field.The method: using optical frequency domain reflectometer to test fiber loop under normal temperature and fast temperature change, then the test signals under two different temperature states are self-correlated and cross-correlated demodulated, realize temperature / strain decoupling, peel off the distributed temperature parameters of fiber loop, then the distributed strain parameters are substituted into scale factor calculation formula, then the scale factor values of fiber loop under fast temperature change can be obtained by accumulating the calculated scale factor along the length.The application can realize the quantitative measurement of scale factor of fiber optic gyroscope sensitive ring under fast temperature change, and the scale factor of fiber optic gyroscope sensitive ring is the core to ensure the angular velocity-signal conversion accuracy of gyro system, directly determines the reliability of linear mapping relationship between gyro output and actual rotation input, and plays an important role in the winding process optimization of fiber optic gyroscope sensitive ring.

The application discloses a kind of modular laser device testing devices, it is related to laser performance test technical field, comprising: detachable stage module, for carrying M×N array arrangement laser device;Base module, detachably connected with the stage module, including power supply interface matrix and cooling liquid flow channel;Three-axis mechanical arm module, suspended above detachable stage module, end carries integrating sphere optical test head;Multi-channel independent power supply system, provides independent controllable power supply channel to stage module by the base module;Linkage control system, integrated current / temperature / optical sensor.The application uses Hall current sensor and PID control algorithm by multi-channel independent power supply system, suppresses current fluctuation, compared with traditional scheme, so that detection accuracy is improved.Simultaneously, base cooling system and stage metal straight guide path cooperate, reduce thermal resistance, reduce temperature fluctuation, avoid local overheating to cause device performance degradation, ensure that test environment is stable.

The utility model belongs to optical testing equipment technical field especially relates to a kind of dynamic optical testing devices suitable for semiconductor thin film spin coating film forming process.The device includes sample module, light source module, acquisition module and control module, sample module includes material loading tray and glue spreader, material loading tray is equipped with the material loading site for bearing solution, glue spreader transmission connection is in material loading tray;Light source module includes support frame and multiple laser sources, acquisition module includes multiple signal detection receivers, the light signal of laser source emission is transferred to corresponding signal detection receiver on sample module, laser source and signal detection receiver are arranged on support frame with the axis of sample module as center, so that the light signal of multiple laser sources emission is dispersedly arranged.The above-mentioned setting makes that multiple laser sources emitted light signal between will not exist overlap or cross, optical testing function is more rich and comprehensive, and different light signals can avoid mutual interference, improves detection accuracy reliability.

The present invention relates to optical coupling between optical components and, more particular, to an optical probe (1) configured for optical testing of at least one micro-optical component (50), to a method for producing an optical probe (1), and to a method for simultaneously optical testing of at least one micro-optical component (50). The optical probe (1) is comprising: a probe head (10), wherein the probe head (10) comprises a test component (2); a plurality of micro-optical elements (20), wherein each micro-optical element (20) is a separate element with regard to the test component (2) and in mechanical contact with the test component (2), wherein each micro-optical element (20) is individually aligned with regard to the test component (2); and wherein each micro-optical element (20) is configured to generate a mode-field diameter of up to 100 µm, wherein the micro-optical elements (20) are configured to optically couple at least one light beam (3) between the test component (2) and the micro-optical component (50), thereby being configured to determine an emission characteristics of a coupling location (52) comprised by the micro-optical component (50), wherein the micro-optical component (50) further comprises a beam-shaping element (51a), wherein the beam-shaping element (51a) is arranged in a manner that at least a portion of the light beam (3) is travelling through the beam-shaping element (51a).