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Crystal optics is the branch of optics that describes the behaviour of light in anisotropic media, that is, media (such as crystals) in which light behaves differently depending on which direction the light is propagating. The index of refraction depends on both composition and crystal structure and can be calculated using the Gladstone–Dale relation. Crystals are often naturally anisotropic, and in some media (such as liquid crystals) it is possible to induce anisotropy by applying an external electric field.
An optical element damage threshold detection system
PendingCN122448484ATest beamOptical mount
The present application relates to the technical field of optical element detection, and discloses an optical element damage threshold detection system, which comprises a first light source, a switching device, a sample stage, an imaging device and a main controller. The main controller is used to control the switching device to switch the focused optical assembly on any optical mounting position to be located on the main light path of a test light beam. The focused optical assembly on different optical mounting positions comprises a single-lens focusing assembly and a beam-reducing mirror focusing assembly. The light beam shaped by the focused optical assembly is output to a specific point of the measured optical element for damage testing. The damage threshold detection result can be obtained by analyzing the detection images before and after the action of the test light beam using the imaging device. The optical element damage threshold detection system can adapt to the testing requirements of thin film and long crystal optical elements, thereby suppressing the self-focusing of the long crystal and improving the accuracy of the test result.
Owner:FUJIAN CASTECH CRYSTALS