Abstract
The proper choice of optomechanical components along with alignment techniques is vital to the successful implementation of lens positioning and mounting. In general, there is a trade-off between lens positioning accuracy and manufacturing cost. In order to achieve optimal precision- to-cost ratio, a careful optomechanical design together with accurate alignment and assembly is necessary. This paper presents a lens positioning and mounting in a few microns accuracy using a kinematic mount module. The optomechanical design of the kinematic mount module and the associated fixtures based on the simulation study of components sensitivity are presented. The processes for alignment and assembly, which separate decenter from tip-tilt, are developed and presented. Finally, the prototypes are created and testing results are presented. The optomechanical design that allows the separation of decenter from tip-tilt considerably simplifies the positioning and assembly process and reduces the cost for mass production.
Highlights
High-precision positioning and mounting individual optical lenses in optical instruments are critical for higher-performance applications
This paper mainly focus on discussing the design and prototyping of two major fixtures: the fixed kinematic mount base and the floating kinematic lens unit. 3.1.1
The same metrology system developed for the kinematic mount module assembly was used for testing
Summary
High-precision positioning and mounting individual optical lenses in optical instruments are critical for higher-performance applications. For many instruments with compact arrangement, the room for mechanical equipment to align an individual optical lens in the end product is very limited. The finished module should be integrated into the instruments. This paper presents an overview of the efforts on prototype development of a kinematic mount module for high-precision lens assembly. The module consists of two major parts: the fixed kinematic mount base and the floating kinematic lens unit. The fixed kinematic mount base defines its position relative to the Optical Axis (OA) of the instrument. It is designed to be plugged into the instrument.
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