Patent ID: 11899172
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The imaging optical lens assembly of claim 1, wherein the imaging optical lens assembly is applied to an infrared band within a wavelength ranged from 780 nm to 1500 nm; at least one of the object-side surface and the image-side surface of each of at least three of the five lens elements comprises at least one inflection point; an axial distance between the object-side surface of the first lens element and the image-side surface of the fifth lens element is TD, an axial distance between the image-side surface of the fifth lens element and an image surface is BL, an entrance pupil diameter of the imaging optical lens assembly is EPD, and the following conditions are satisfied:

3.0<TD/BL; and

1.0<TD/EPD<2.2.