多运动组共轨型紧凑变焦光学系统

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Compact zoom optical system with multiple moving groups sharing travel path

Abstract：Traditional zoom system widely use mechanically compensated zoom structures，which suffr from excessive total track length and bulky structures. These limitations make it dificult for them to met the strict constraints on volume and weight imposed by miniaturized devices. To address the aforementioned issues，this study discusses the principle of stable imaging in multiple moving groups zoom systems and proposes a compact zoom optical system model based on multiple moving groups sharing travel path.

Taking a five-group zoom system as a design case，the complete design process from the formulation of design specifications to Gaussian structure analysis and then to optimization solutions is elaborated in detail. The effectiveness of the design results is verified through performance evaluation. The design results show that the system employs three glass lenses and seven plastic lenses，achieving a 3× continuous zoom from 23mm to 69mm with a total track length of 69mm . The system has an F -number range of 2.4～4.5 ，an image height of 8.49mm ，and a working spectrum covering 435～650nm ， and the system mass is controlled below 30g ，while maintaining excellent imaging quality across the entire field of view and zoom range. The zoom curves exhibit smooth transitions without inflection points. The proposed compact zoom optical system model based on multiple moving groups sharing travel path efctively expands the effective motion range of individual moving groups under limited mechanical travel. While reducing the axial length of the zoom system， it ensures imaging quality stability during continuous zooming，providing an efective approach to achieve the goals of compactness design in zoom optical systems. Additionally，by adopting a glass-plastic hybrid configuration for the lens material，the lightweight target of the system is achieved.

Key words： optical design; continuous zoom; multiple moving groups; compact optical system

1引言

随着遥控无人机、智能机器人及头戴式显示器等技术的快速发展，光学系统在集成度与成像性能的平衡方面面临更严苛的挑战。（剩余9059字）