Lens assembly and optical device

• Main Authors: MA JING, QI WEI, SU JIANI, QI YUEJING
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention provides a lens assembly and an optical device. The lens assembly comprises a first lens, a second lens and a third lens which are sequentially arranged from front to back, the first lens is a positive lens, the second lens is a negative lens, and the third lens is a positive lens; the first lens and the second lens are mutually glued to form a doublet lens, and the second lens and the third lens are arranged at an interval; the focal length of the first lens is f1 ', the focal length of the second lens is f2', and the focal lengths of the third lens are f3 ', f1'gt, f3' | f2 '| gt, f3'. The lens assembly and the optical device provided by the invention can meet the test requirements of a wide-spectrum achromatic optical system simultaneously used in visible light and near-infrared bands. 本发明提供了一种透镜组件及光学器件，其中透镜组件包括从前至后依次设置的第一透镜、第二透镜和第三透镜，第一透镜为正透镜，第二透镜为负透镜，第三透镜为正透镜；第一透镜与第二透镜之间互相胶合形成双胶合透镜，第二透镜与第三透镜之间间隔设置；第一透镜的焦距为f1'，第二透镜的焦距为f2'，第三透镜的焦距为f3'，f1'>f3'，∣f2'∣>f3'。本发明提供的透镜组件及光学器件，能够满足可见光和近红外波段同时使用的宽光谱消色差