Abstract
Information technology has much promoted the development of optical technology. With the help of computer technology, people can design and manufacture more complex optical systems than before, to obtain ideal imaging quality. The complexity of the optical system brings enormous challenges to optical alignment. Optical system alignment is the crucial link of transforming the excellent optical design into instruments with good performance in reality. Precision alignment of an optical system requires precise adjustment of each component's degree of freedom using a specific adjusting mechanism. Due to the quantification and compensation correction for the coordinates coupling relationship among each dimension adjusting freedom of the adjusting frame can not be carried out. Generally, the coordinates coupling problem is usually ignored in optical system alignment, to cause the optical adjustment error. This paper carries out an analysis for the coupling relationship among each dimension motion freedom of multi-dimensional precision optical adjusting frame in details by mathematical modeling and simulation, the decomposed transformation for each dimension adjusting mount of multi-dimensional precision optical adjusting frame, and the compensation correction for the coordinates coupling among each dimension adjusting mount. The test results show that this method can effectively reduce the difference between the actual mechanical adjusting mount and the expected optical adjusting mount, to achieve more accurate optical adjustment.
Highlights
Optical instruments play an essential role in exploring both the micro and macro fields (Yang, 2005)
Information technology has much promoted the development of optical technology
A specific off-axis three-reflection optical system is designed to have the image quality approaching to the diffraction limit, the position accuracy of each optical component has a very high requirement: the location accuracy of displacement must be reached to micrometer level, the location accuracy of the angle must be entered to arcsecond level, to achieve good system alignment results, the computer-aided alignment environment of the off-axis three-reflection optical system is established as shown below: Figure 1
Summary
Optical instruments play an essential role in exploring both the micro and macro fields (Yang, 2005). For the five-dimensional adjusting frame, due to the restrictions of the system installation space, the requirements of the system alignment state, the mechanical structure design difficulty and the limits of processing processes, they both can not be orthogonal among the three-dimensional translation adjusting freedom of the adjusting frame; the rotary center of two-dimensional rotational freedom and the optical center of the optical components can not coincide (Kim, S, Yang, Lee & Kim, S.W, 2007); when carrying out the adjustment for five freedom, the coordinates coupling is existed among each dimension adjusting mount, that is to say, one dimension is adjusted, another one dimension even several dimensions will be changed (Sun, Lv, Yao & Liu, 2014). Test results show that the method proposed in this paper can effectively reduce the difference between the actual mechanical adjustment and the expected optical adjustment, achieving more accurate optical change
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
