OPTICAL SYSTEM - SINTAI OPTICAL SHENZHEN CO LTD

Title:

OPTICAL SYSTEM

Document Type and Number:

Japanese Patent JP2023134394

Kind Code:

A

Abstract:

To provide an optical system which has a large compensation angle and compact size, and yet offers good optical performance.SOLUTION: An optical system is provided, comprising an objective lens module, an image inversion module, and an eyepiece module arranged in order from the object side to the image side along an optical axis. The objective lens module has refractive power and includes a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The first, second, third, fourth and fifth lens groups are arranged in order from the object side to the image side along the optical axis. The optical system satisfies the following condition: 0.45≤LG4D/LG1D≤0.8, where LG4D represents an effective optical diameter of the fourth lens group and LG1D represents an effective optical diameter of the first lens group.SELECTED DRAWING: Figure 1

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Inventors:

MA FANG-LI
LIU BIN
HAN FEI
ZHAO LING-WEI
CHEN YUE-YE
LIU HUA-TANG

Application Number:

JP2023036598A

Publication Date:

September 27, 2023

Filing Date:

March 09, 2023

Export Citation:

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Assignee:

SINTAI OPTICAL SHENZHEN CO LTD
ASHU KOGAKU KOFUN YUGENKOSHI

International Classes:

G02B13/02; G02B23/00; G02B23/02

Attorney, Agent or Firm:

Shirasaka Patent Attorney Corporation

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