In the process of lens with aspherical surfaces,the aspherical surfaces and spherical surfaces are usually optically processed based on the structure of the lens.There is a machining eccentricity error between the symmetry axis of the aspheric surface and the opcical axis of the lens.The inconsistency between the asymmetrical axis and the optical axis of the optical system which contains multiple aspherical lenses and has strict eccentricity requirements ,such as the adjustment tolerance is 5″, leeds to a large wave aberration,if the adjustment of optical system is relied on the traditional decentering technology. The result reduces the final imaging quality of the lens.For the high-precision installation of aspherical refraction lens which contains strict installation tolerance,based on the traditional technology that adjusts the optical axis of the lens by devices such as center deviation measuring instruments,computer simulation calculation、 optimization of structural form and reasonable setting of compensator are applied in the actual engineering.According to the system aberration and compensator sensitivity, adjust the centered lens to reduce or eliminate the system aberration.The result shows that this method can effectively correct the misalignment of the system and at the same time improve the image quality of the optical lens
Large aperture optical system is more and more widely used in astronomy and space optics. With the increase of aperture, the detection methods and instruments are faced with many challenges. It is difficult for traditional full-aperture detection to meet the requirements of modern large-aperture optical system. A sub-aperture inversion method for optical wavefront is proposed. Based on the relationship between the full-aperture wavefront and the sub-aperture wavefront of the optical system, the converting matrix between the sub-aperture Zernike coefficients and the full-aperture Zernike coefficients is established. The full aperture Zernike coefficients are obtained by matrix calculation. Therefore, a small number of discrete sub-aperture wavefront can be used to invert the full aperture wavefront. In this paper, the mathematical model of multi-seed aperture layout is established based on the efficiency and accuracy simultaneously, and the relevant wavefront reconstruction algorithm is discussed. In addition, the optical system detection process is simulated by mathematical simulation, and the results are compared with the results of full-aperture test, so as to verify the technical feasibility of this method. The conclusion is drawed that this method is simple and efficient, and can guarantee high accuracy even when the filling factor is low. It is an ideal method for wavefront measurement of large aperture optical systems.
Laser communication terminal is the key point of the satellite laser communication system. In order to improve the pointing and tracking efficiency, an afocal off-axis optical system was designed for laser communication Terminal. So the precise alignment an afocal mirror telescope of all-reflective off-axis optical system is great significance. In this paper, computer-aided alignment methods utilizing Zernike polynomial coefficients have been developed for an afocal mirror telescope. The misalignment state is simulated in CODEV and computer-aided alignment software. The relation of component deflexion and the place of exit pupil have been simulated by computer model reverse optimization. At a wavelength of 632.8nm, the main characteristics are a WFE of ≤0.035nm. These results show that it can meet the precision requirement and accelerate the convergence of misalignment variables. Ultimately, the image quality and precision of exit pupil was effective operated according to the request of satellite laser communication system.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.