CN210605346U

CN210605346U - Variable-focus 3D (three-dimensional) camera device with crossed light paths

Info

Publication number: CN210605346U
Application number: CN201921271912.7U
Authority: CN
Inventors: 郑国林
Original assignee: Huaxian Red Sun Medical Instruments Co ltd
Current assignee: Huaxian Red Sun Medical Instruments Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-22
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a cross light path 3D camera device that can zoom, which comprises a frame, fixed mounting has first camera and second camera in the frame, first camera is the same with the structure of second camera, form contained angle α between first camera and the second camera, contained angle α is the acute angle, install zoom lens on first camera and the second camera respectively, install the ring that zooms on the zoom lens, be equipped with the annular cingulum on the ring that zooms, zoom actuating mechanism is installed respectively to one side of two zoom lenses, two zoom actuating mechanism synchronous motion, zoom actuating mechanism fixed mounting is in the frame, install drive gear on zoom actuating mechanism's the output shaft, drive gear and annular cingulum meshing.

Description

Variable-focus 3D (three-dimensional) camera device with crossed light paths

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a cross light path 3D camera device that can zoom.

Background

In order to accurately perform the operation in the surgical operation, an operation microscope is required to be used, and the 3D stereoscopic image is magnified and viewed. The principle of generating 3D stereo vision is: the binocular vision comes from images in different left and right directions, and forms 3D stereoscopic vision through brain vision integration. In the prior art, a 3D image of an operating microscope is generally obtained by splitting a left optical path and a right optical path from an optical axis of a stereomicroscope through a beam splitter, imaging the two optical paths through an imaging device such as a CCD, and combining the images of the two optical paths.

At present, two optical lens cones of an operating microscope are generally installed in parallel, and in order to enable two images to be superposed, a large objective lens is often used for forming an image included angle through refraction, the structure is complex, and certain influence is also exerted on the image quality. At present, a pure optical operating microscope adopting a small objective structure is also available, but the microscope has no zooming and focusing functions, is simple in structure, only has a fixed working distance and a fixed magnification factor, is limited in use and is inconvenient.

The following patent documents describe techniques related to surgical microscopes: the 'apochromatic large objective lens with long working distance for an operating microscope' disclosed in the Chinese invention patent application with the publication number of CN103558683A is a fixed focus system, the working distance is long, but cannot be adjusted; the Chinese patent application with publication number CN107315241A discloses a continuous zoom large objective lens system for an operating microscope, which describes how to satisfy the problems of continuous zooming and adjustable working distance for the large objective lens system of the operating microscope, but the structure is complex and has certain influence on the image quality.

The operation microscopes can only see a 3D effect in the optical eyepiece, and the diameter of the visual port of the eyepiece is very small. In use, the user's pupil must be proximate to the eyepiece optically viewable port to see the magnified image. The pupil and the visual port of the eyepiece can not see the visual image by slight dislocation, and the viewing time is difficult to last. It is known that under a microscope, the operation is more accurate by magnifying the vision, but the operation of holding the pupil close to the eyepiece of the microscope for a long time is hard to bear by ordinary people, so that many doctors have to abandon the high-end technology.

Disclosure of Invention

The utility model discloses a solve the weak point among the prior art, provide a cross light path 3D camera device that can zoom, do not use big objective, let camera and camera lens according to looking the whole slope of cross line, simple structure, the image is clear.

The utility model discloses a solve the technical scheme that above-mentioned problem took, the utility model provides a cross light path 3D camera device that can zoom, which comprises a frame, fixed mounting has first camera and second camera in the frame, the structure of first camera and second camera is the same, form contained angle α between first camera and the second camera, contained angle α is the acute angle, install zoom respectively on first camera and the second camera, install the ring that zooms on the zoom lens, zoom and be equipped with the annular cingulum on the ring, the actuating mechanism that zooms is installed respectively to one side of two zoom lenses, two actuating mechanism synchronous motion that zooms, actuating mechanism fixed mounting zooms is in the frame, install drive gear on actuating mechanism's the output shaft that zooms, drive gear and annular cingulum meshing.

Preferably, the angle α between the first camera and the second camera is 3-30 °.

Preferably, the zoom lens further comprises an inner lens barrel, a plurality of lenses are installed in the inner lens barrel, the zooming ring is installed outside the inner lens barrel, the zooming sliding block is installed at the top of the inner lens barrel, a spiral groove is formed in the zooming ring, and the zooming sliding block is connected in the spiral groove in a sliding mode.

Preferably, the utility model discloses still include power plug, isolation power and controller, power plug and isolation power are connected, and the isolation power passes through the camera connecting wire and is connected with first camera and second camera respectively, all installs image sensor and signal output interface in first camera and the second camera;

the isolation power supply is further connected with the controller, the controller is respectively connected with the zooming driving mechanisms corresponding to the two zooming lenses in parallel through data lines, and buttons used for controlling the zooming driving mechanisms to act are arranged on the controller.

Preferably, the zoom driving mechanism is a motor.

Preferably, the first camera and the second camera are both high definition cameras.

Adopt above-mentioned technical scheme, the utility model has the advantages of it is following:

compared with the prior art, the utility model, do not use big objective, let camera and camera lens according to looking the whole slope of cross line, simple structure, the image is clear.

The utility model discloses a controller control two zoom motor synchronous rotations, realize two zoom lens's synchronous zooming. When the motor rotates, the zoom lens can be driven by the transmission gear to change the size of the shot picture in multiples.

The utility model discloses contained angle α between well first camera and the second camera is 3-30, accords with the contained angle between the two light paths about when observing the object of being shot between the both eyes, can avoid the dizzy sight.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of a zoom lens of the present invention;

fig. 3 is a control schematic block diagram of the zoom drive mechanism of the present invention.

Detailed Description

As shown in fig. 1 to 3, the utility model discloses a cross light path 3D camera device that can zoom, including frame 1, fixed mounting has first camera 2 and second camera 3 in the frame 1, in this embodiment, first camera 2 and second camera 3 all adopt high definition camera (resolution is 1920 × 1080 at least), first camera 2 is the same with second camera 3's structure, form contained angle α between first camera 2 and the second camera 3, contained angle α is the acute angle, in this embodiment, contained angle α is 3-30, install zoom lens 4 on first camera 2 and the second camera 3 respectively, zoom ring 5 is installed on zoom lens 4, be equipped with annular toothed belt 6 on zoom ring 5, zoom actuating mechanism 7 is installed respectively to one side of two zoom lenses 4, two zoom actuating mechanism 7 synchronous motion, zoom actuating mechanism 7 is fixed mounting in frame 1, install drive gear 8 on the output shaft of zoom actuating mechanism 7, drive gear 8 meshes with annular toothed belt 6.

The zooming driving mechanism 7 is a motor. The motor can adopt a stepping motor or a miniature ultrasonic motor, and can realize the accurate control of the rotation angle, further realize the accurate adjustment of the zooming ring 5 and the inner lens cone 41, and realize the accurate zooming.

The zoom lens 4 further comprises an inner lens barrel 41, a plurality of lenses 42 are installed in the inner lens barrel 41, a zoom ring 5 is installed outside the inner lens barrel 41, a zoom sliding block 43 is installed at the top of the inner lens barrel 41, a spiral groove 44 is formed in the zoom ring 5, and the zoom sliding block 43 is connected in the spiral groove 44 in a sliding mode.

When the zoom ring 5 rotates, the inner barrel 41 can slide forward or backward, so that the inner lens 42 moves to focus.

The utility model discloses still include power plug 9, keep apart power 10 and controller 11, power plug 9 is connected with isolation power 10, keeps apart power 10 and passes through camera connecting wire 12 and be connected with first camera 2 and second camera 3 respectively, all installs image sensor 13 and signal output interface 14 in first camera 2 and the second camera 3.

The isolation power supply 10 is further connected with the controller 11, the controller 11 is respectively connected with the zooming driving mechanisms 7 corresponding to the two zooming lenses 4 in parallel through data lines 15, and the controller 11 is provided with a key for controlling the zooming driving mechanisms 7 to act.

The power plug 9, the isolation power supply 10, the controller 11, the camera connecting wire 12, the image sensor 13 and the like are all conventional devices, the isolation power supply 10 can isolate the power supply from an original power distribution system, influence possibly generated when other loads have interference or pulses exist can be avoided, and meanwhile, the danger of electric shock can also be avoided. The isolated power supply 10 can be selected from Meixin isolated power supply 10, Jinshengyang isolated power supply 10 and the like. The image sensor 13 (also called a photosensitive element including CCD and CMOS) converts light into an electronic signal. The controller 11 may be a PLC, an integrated circuit, or a single chip (e.g., a 51-chip or 89C 52-chip). The connection relation between the power plug 9, the isolation power supply 10, the controller 11 and the zoom motor and the working principle and working process of the image sensor 13 are the prior art, and are not described in detail.

The optical path of the shot object entering the first camera 2 is marked as a left optical path, and the optical path of the shot object entering the second camera 3 is marked as a right optical path;

the utility model discloses a light path respectively sets up a set of little objective (zoom) about, lets the optics center do not have the skew, guarantees that optical imaging does not receive the refraction influence of big objective among the prior art, guarantees camera lens imaging quality. On the basis, the zoom driving mechanisms 7 corresponding to the two zoom lenses 4 are additionally arranged, the zoom driving mechanisms 7 are motors in the embodiment, the two motors are controlled by the controller 11 at the same time, and after the keys are pressed down, the motors act at the same time, so that the optical focusing and zooming of the two zoom lenses 4 are synchronous, and the monitoring of high-quality 3D images with different object distances is realized. In the whole light path, the camera and the zoom lens 4 form a linear integral structure, an included angle is formed between the first camera 2 and the second camera 3, visual intersection is formed, the stability is good, and 3D image vision is more vivid and clear.

The working process is as follows:

the power is obtained by a power plug 9, the power is processed by an isolation power supply 10, 12V pure direct current is output, and power is simultaneously supplied to the first camera 2 and the second camera 3 through a camera connecting wire 12, so that the first camera 2 and the second camera 3 enter a working state. The central axes of the two zoom lenses 4 intersect on the surface of the object 16 to be shot, the images of the object to be shot are respectively focused on the image sensors 13 of the first camera 2 and the second camera 3, and the first camera 2 and the second camera 3 simultaneously output high-definition signals with left-right parallax to be sent to a display to display a 3D video image. The two buttons on the controller 11 are pressed respectively to enable the motors to rotate back and forth, the transmission gear 8 drives the zoom lens 4 to enable the size of the shot picture to change in a multiple mode, specifically, after one button is pressed, the two motors can rotate synchronously, and synchronous zooming of the two zoom lenses 4 is achieved. The invention not only can output the three-dimensional 3D video, but also has the zooming function with variable magnification.

The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.

Claims

1. A variable-focus 3D camera device with crossed light paths is characterized by comprising a rack, wherein a first camera and a second camera are fixedly mounted on the rack, the first camera and the second camera are identical in structure, an included angle α is formed between the first camera and the second camera, the included angle α is an acute angle, zoom lenses are respectively mounted on the first camera and the second camera, zoom rings are mounted on the zoom lenses, and annular toothed belts are arranged on the zoom rings;

the camera system further comprises a power plug, an isolation power supply and a controller, wherein the power plug is connected with the isolation power supply, the isolation power supply is respectively connected with the first camera and the second camera through camera connecting wires, and an image sensor and a signal output interface are respectively arranged in the first camera and the second camera;

2. The variable focus 3D camera apparatus of claim 1, wherein the angle α between the first camera and the second camera is 3-30 °.

3. The variable focus cross path 3D imaging apparatus according to claim 1, wherein: the zoom lens further comprises an inner lens barrel, a plurality of lenses are installed in the inner lens barrel, a zoom ring is installed outside the inner lens barrel, a zoom sliding block is installed at the top of the inner lens barrel, a spiral groove is formed in the zoom ring, and the zoom sliding block is connected in the spiral groove in a sliding mode.

4. The variable focus cross path 3D imaging apparatus according to claim 1, wherein: the zooming driving mechanism is a motor.

5. The variable focus cross optical path 3D imaging apparatus according to claim 4, wherein: the first camera and the second camera are both high-definition cameras.