Optical system
Patent Information
- Application Number
- CN202610749550.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-27
- Publication Date
- 2026-10-16
AI Technical Summary
这种高集成度结构导致镜头结构过于紧凑，镜头的装配容差显著减小，对装配误差极为敏感，严重影响三色通道的精确配准，引发画面重影或色彩漂移
[0047]The optical system of this application optimizes the spatial layout while compressing the overall size of the optical system by controlling the height of the lens barrel and the air gaps (T12+T23) between the first three lenses, which is beneficial for miniaturization of the optical system. In this layout, the air gaps have a significant impact on optical performance. When the optical system satisfies the condition that L/(T12+T23) is in the range of 3.58-4.06, the sum of the air gaps on the optical axis of the first and second lenses and the air gaps on the optical axis of the second and third lenses accounts for a relatively large proportion of the space in the lens barrel. This can easily lead to insufficient axial constraint force of the second lens in the lens barrel. If the structural arrangement is unreasonable, the effective light rays at the lens edge may be easily blocked by the inner wall of the lens barrel or the spacer elements, affecting the relative illumination of the optical system. By controlling the range of the ratio (ΣCP1+EP12)/f2, the sum of the maximum thicknesses of all spacer elements between the first and second lenses along the optical axis, together with the distance parallel to the optical axis from the image source side of the first spacer element to the imaging side of the second spacer element, constitutes the positioning auxiliary structure of the second lens. Its size matches the effective focal length of the second lens, providing a stable and buffered axial support environment for the second lens. At the same time, by controlling the range of the ratio D2s/|SAG22|, the outer diameter of the imaging side of the second spacer element matches the sagittal depth of the image source side of the second lens. This ensures that while the second lens has sufficient structural strength, its outer wall can avoid interference with the inner wall of the lens barrel, preventing the effective light rays at the lens edge from being blocked, optimizing the light propagation path, reducing light loss and aberrations, and improving the relative illumination of the optical system.