Optical system and imaging device
The optical system uses composite elements with resin lenses bonded to glass lenses and adheres to specific conditions to achieve a compact, lightweight design with high performance and environmental resistance, addressing aberration and environmental stability challenges.
WO2026126584A1PCT designated stage Publication Date: 2026-06-18CANON KK
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CANON KK
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-18
Smart Images
Figure JP2025030259_18062026_PF_FP_ABST
Abstract
[Problem] There is a need for a good optical system using a composite optical element. [Solution] An optical system L0 has a composite optical element HB in which resin lenses are respectively joined to the object side and the image side of a glass lens. At least one among the object-side resin lens and the image-side resin lens has an aspherical surface. The focal distance of the optical system is defined as f, while the air conversion distance on the optical axis from the most image-side lens surface of the optical system to the image plane while focused on an infinite-distance object is defined as bf. At such time, the condition 0.00 < bf / f ≤ 1.25 is satisfied.
Need to check novelty before this filing date? Find Prior Art