US 12,751,603 B2Granted

Rotatable 3D endoscope and imaging system with integrated design of optical system and imaging unit

AssigneeBeijing Fanxing Guangdian Medical Treatment Equipment Co., Ltd.

InventorsGuoqing Dong, Qi Li

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Abstract

Embodiments of the present application disclose a rotatable 3D endoscope and imaging system with integrated design of an optical system and an imaging unit, which is invented to solve the problem of complex structure of 3D imaging endoscopes. The endoscope includes: an objective lens, disposed at the distal end of the endoscope, for collecting the light reflected by the target object to be observed outside the distal end of the endoscope; a relay optical system, disposed on the image side of the objective lens, for transmitting the light to a magnifying unit; a magnifying unit, disposed on the image side of the relay optical system, for transmitting the light to a first camera unit and a second camera unit; a first camera unit, disposed on the image side of the relay optical system, for receiving the light and generating the first image of the target object based on the light; a second camera unit, disposed on the image side of the relay optical system, for receiving the light and generating the second image of the target object based on the light. The embodiments of the present application are applicable to a video scene using an endoscope to examine the abdomen, bladder, nasal cavity and skull base.

Claims6

Dependent claims

An optical 3D endoscope, comprising:

an objective lens, disposed at a distal end of the endoscope, for collecting the light reflected by a target object to be observed outside the distal end of the endoscope;
a relay optical system, disposed on an image side of the objective lens, for transmitting the light collected by the objective lens at the distal end of the endoscope to a magnifying unit;
the magnifying unit, disposed on an image side of the relay optical system, for transmitting the light collected by the objective lens at the distal end of the endoscope transmitted by the relay optical system to a first camera unit and a second camera unit;
the first camera unit and the second camera unit are disposed side by side on an image side of the magnifying unit, and clear apertures of the first camera unit and the second camera unit are located within a spot range of the emergent light of the magnifying unit;
wherein, the first camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a first image of the target object based on the light;
and
the second camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a second image of the target object based on the light, wherein the first camera unit comprises a first camera lens and a first imaging sensor;
the magnifying unit and the first camera lens form a first magnification device, for forming the first image on the first imaging sensor with the light collected by the objective lens at the distal end of the endoscope transmitted by the optical system;
the first image is a magnified image of the target object;
the second camera unit comprises a second camera lens and a second imaging sensor;
the magnifying unit and the second camera lens form a second magnification device, for forming the second image on the second imaging sensor with the light collected by the objective lens at the distal end of the endoscope transmitted by the optical system;
the second image is a magnified image of the target object.

9 more elements

The 3D endoscope, comprising:

an objective lens, disposed at a distal end of the endoscope, for collecting the light reflected by the target object to be observed outside the distal end of the endoscope;
a relay optical system, disposed on an image side of the objective lens, for transmitting the light collected by the objective lens at the distal end of the endoscope to a magnifying unit;
the magnifying unit, disposed on an image side of the relay optical system, for transmitting the light collected by the objective lens at the distal end of the endoscope transmitted by the relay optical system to a first camera unit and a second camera unit;
the first camera unit and the second camera unit are disposed side by side on the image side of the magnifying unit, and clear apertures of the first camera unit and the second camera unit are located within a spot range of the emergent light of the magnifying unit;
wherein, the first camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a first image of the target object based on the light;
and
the second camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a second image of the target object based on the light, wherein the magnifying unit comprises a first magnifying unit, a second magnifying unit and a third magnifying unit;
wherein,
the first magnifying unit comprises a first lens with negative focal power and a second lens with positive focal power, an image side of the first lens and an object side of the second lens are cemented to each other to form a first cemented lens;
the second magnifying unit comprises a third lens with positive focal power and a fourth lens with negative focal power, an image side of the third lens and an object side of the fourth lens are cemented to each other to form a second cemented lens;
the third magnifying unit comprises a fifth lens with negative focal power and a sixth lens with negative focal power;
an image side of the fifth lens and an object side of the sixth lens are cemented to each other to form a third cemented lens.

9 more elements

The 3D endoscope, comprising:

an objective lens, disposed at a distal end of the endoscope, for collecting the light reflected by the target object to be observed outside the distal end of the endoscope;
a relay optical system, disposed on an image side of the objective lens, for transmitting the light collected by the objective lens at the distal end of the endoscope to a magnifying unit;
the magnifying unit, disposed on an image side of the relay optical system, for transmitting the light collected by the objective lens at the distal end of the endoscope transmitted by the relay optical system to a first camera unit and a second camera unit;
the first camera unit and the second camera unit are disposed side by side on the image side of the magnifying unit, and clear apertures of the first camera unit and the second camera unit are located within a spot range of the emergent light of the magnifying unit;
wherein, the first camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a first image of the target object based on the light;
and
the second camera unit is used for receiving the light collected by the objective lens at the distal end of the endoscope transmitted by the magnifying unit, and generating a second image of the target object based on the light, further comprising:
an insertion tube, in which the objective lens and the relay optical system are disposed, wherein the objective lens is disposed at a distal end of the insertion tube;
a magnifying unit support, a first end of the magnifying unit support is connected to a proximal end of the insertion tube, and the magnifying unit is disposed in the magnifying unit support;
a camera unit support, a first end of the camera unit support is connected to a second end of the magnifying unit support;
the first camera unit and the second camera unit are disposed side by side on the camera unit support;
a handle, and the handle is connected with a second end of the camera unit support.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/516,207Filed 21 Nov 2023
Priority: CN 202310613549.729 May 2023
Published: US 2024/0398214 A15 Dec 2024
Granted: 6 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

A61B 1/00194
Optical arrangements: adapted for three-dimensional imaging
A61B 1/00128
Connectors, fasteners and adapters, e.g. on the endoscope handle: mechanical, e.g. for tubes or pipes
A61B 1/051
Characterised by the image sensor, e.g. camera, being in the distal end portion: details of CCD assembly
A61B
Medical diagnosis and surgery