Optical platform, also known as optical Bread Board, Optical Desktop, scientific desktop, experimental platform, for the level, stability of the table, the general platform needs to carry out measures such as vibration isolation, to ensure that it is not affected by external factors, so that scientific experiments normal.
Testing method of optical platform
The most important characteristic of an optical platform or a bread plate is its resonant frequency. The resonant frequency and amplitude are negatively correlated, so the resonant frequency should be increased as much as possible, thus minimizing the vibration strength. The platform and the bread board vibrate within a specific frequency range. In order to improve performance, the damping effect of each size platform and the bread board needs to be optimized.
Platform damping requires a variety of tests to optimize the ratio of thickness/area. A larger platform (at least 10 feet or 3 meters long) with a thickness of 12.2 inches (310 mm) thickness, which improves stability. For smaller platforms, the thickness can be 8.3 inches (210 mm) or 12.2 inches (310 mm) and can be customized for larger sizes.
The most widely used vibration response transfer function of the optical platform is the flexibility. In the case of constant (static) forces, the flexibility can be defined as the ratio of the linear or angular dislocation to the external force exerted. In the case of dynamic Change Force (vibration), the flexibility can be defined as the ratio of the stimulated amplitude (angle or linear dislocation) to the vibration amplitude. Any deflection of the platform can be manifested by the relative position of the components installed on the surface of the platform. Thus, by definition, the smaller the flexibility value, the closer the optical platform is to the primary goal of the design: minimizing the deflection. The amount of flexibility is related to the frequency, and its unit of measurement is the dislocation of the Unit force (M/Newton).
A measured external force is applied to the surface of the platform or bread board using a pulse hammer, and a sensor is fitted to the surface of the platform or bread board to measure the vibration of the composite.
The signal emitted by the detector is read by the analyzer and used to generate a frequency response spectrum (i.e., a flexible curve). During the research and development of the optical platform, the soft curves of many points on the surface of the platform are recorded, however, the flexibility of the four corners of the platform is always the largest. As a result, the flexibility curves and data released by the company are measured in four corners of the flat sensor, thus indicating the most unsatisfactory data results.
Single test data
The product is subject to independent testing with a separate test data report and flexible curve. This allows for more data than the industry standard that represents all product characteristics using a single dimensional flexibility curve. The flexibility curves and data are measured in four corners of the flat sensor, thus indicating the most unsatisfactory data results.