CN113485059B

CN113485059B - Method and apparatus for ambient light rejection

Info

Publication number: CN113485059B
Application number: CN202110766165.XA
Authority: CN
Inventors: 杨国辉; 初冬梅; 路钧杰
Original assignee: Jinan Most Intelligent Technology Co ltd
Current assignee: Jinan Most Intelligent Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-09-02
Anticipated expiration: 2041-07-07
Also published as: CN113485059A

Abstract

The invention discloses a method and a device for ambient light suppression, relates to the technical field of camera lenses, and solves the problems that the conventional 3D camera lens needs to be manually contracted and expanded when the lens is installed, used, disassembled and stored in order to not influence normal use, and is troublesome and inconvenient to operate and use due to a buffering protection structure arranged on the lens. Methods and apparatus for ambient light suppression, including a lens housing; the lens shell comprises a strip groove, is of a cylindrical structure, and is provided with four strip grooves in a surrounding manner on the outer circumferential wall; the positioning short shafts are welded on the inner walls of the two sides of the long grooves in a front-back corresponding mode, and two groups of the positioning short shafts are welded on the inner walls of the two sides of the long grooves in a front-back corresponding mode; two filtering sheets, a CMOS sensor and two modulation and demodulation modules are arranged in the lens shell. The invention can drive the four buffer plates to automatically expand and contract by utilizing the disassembling and assembling actions of the lens, thereby avoiding the trouble of manually operating the four buffer plates to expand and close during lens disassembling and assembling.

Description

Method and apparatus for ambient light rejection

Technical Field

The invention relates to the technical field of camera lenses, in particular to a method and a device for ambient light suppression.

Background

With the increasing abundance and variety of production and life, people like recording some nice pictures by using a camera, so that the camera gradually becomes an indispensable necessity for people. The camera generally comprises a shell, a lens and an image sensing module, wherein the lens and the image sensing module are arranged in the shell, the image sensing module comprises a circuit main board and an image sensor electrically connected with the circuit main board, a shot scene is imaged in the image sensor through the lens, and the datamation of signals is completed through a circuit board so as to be transmitted to a storage card for storage.

For example, patent No. CN201720160389.5 discloses a lens subassembly and camera, and the lens subassembly includes camera lens, fixed regulating part, installed part and set up in mounting on the camera lens, fixed regulating part is including the regulation portion and the connecting portion that are used for adjusting luminance, connecting portion deviate from regulation portion one end with the mounting is connected and is formed the accommodating space of camera lens, the installed part with the shell of camera is connected, the installed part deviate from with one of the shell connection of camera is served and is equipped with the installation cavity, the regulation portion install in the installation cavity. According to the invention, the mounting part is connected with the shell of the camera to fix the adjusting part, the fixing adjusting part is provided with a connecting part which is connected with the fixing part on the lens, and the lens is fixed by the fixing adjusting part and the fixing part, so that the lens is fixed without shaking; the lens components are compactly arranged, the overall length of the lens is shortened, and the overall volume of the lens components is reduced.

The high frequency and the low frequency part in the light of can not effectual suppression formation of image of current 3D camera lens cause the camera lens to shoot the formation of image quality not good enough, and in order not to influence normal use, the buffering protection architecture that the camera lens was equipped with need the camera lens installation use and dismantle manual shrink and expand when depositing, and the operation is used inconveniently.

Disclosure of Invention

The invention aims to provide a method and a device for ambient light suppression, which aim to solve the problems that the buffering protection structure provided by the lens in the background technology does not influence normal use, the lens needs to be manually contracted and expanded when being installed, used, disassembled and stored, and the operation is inconvenient.

In order to achieve the purpose, the invention provides the following technical scheme: methods and apparatus for ambient light rejection, including a lens housing; the lens shell comprises a strip groove, is of a cylindrical structure, and is provided with four strip grooves in a surrounding manner on the outer circumferential wall; the positioning short shafts are welded on the inner walls of the two sides of the long grooves in a front-back corresponding mode, and two groups of the four positioning short shafts are welded on the inner walls of the two sides of the long grooves in a front-back corresponding mode and are rotatably connected with a long buffer plate; two filtering plates, a CMOS sensor and two modulation and demodulation modules are arranged in the lens shell, wherein a photodiode and a charge storage device are arranged in the CMOS sensor, and the photodiode and the charge storage device are in communication connection with the two modulation and demodulation modules.

Furthermore, the lens shell also comprises track shafts, wherein eight track shafts in total are arranged on the outer wall of the circumference of the lens shell in a surrounding manner, and the four track shafts are positioned among the four long grooves.

Further, the lens shell further comprises arc-shaped ring top plates, and four arc-shaped ring top plates are arranged on the four groups of track shafts in a penetrating and sleeving mode through springs in a pushing mode.

Further, the lens shell further comprises a strip top frame, and four long strip top frames are symmetrically and backwards supported and welded in the upper and lower spacing openings of the arc-shaped annular top plate.

Further, the lens shell further comprises a shifting shaft, wherein the shifting shafts are welded at two ends of the arc-shaped annular top plate at four positions, and the shifting shafts protrude and extend to the long groove.

Further, the buffer plate includes

The two sides of the buffer plate are connected with four connecting rods in a front-back corresponding rotating manner;

the four groups of eight connecting rods on the rear side of the track strip frame are all supported and welded with one track strip frame.

Furthermore, the shifting shafts at two ends of the top plate of the four arc-shaped rings are correspondingly matched with the eight track strip frames in an inserting way.

Furthermore, when the lens shell and the camera are buckled and installed together, the rear ends of the two long top frames are in abutting contact with the camera body.

Furthermore, the buffer plate and the four connecting rods jointly form a parallelogram mechanism, and the buffer plate is correspondingly embedded in the four long grooves when rotating and contracting.

1. The method for ambient light suppression according to claim, characterized by: comprises the following steps

2. Ambient light enters through the front end opening of the 3D camera lens and passes through the two filter plates;

3. the two optical filters can accurately intercept light rays of required wave bands, the optical filters can inhibit visible light with the wavelength below 600nm of high-frequency components in a received image of a D camera, meanwhile, visible light with the wavelength above 650nm of a low-frequency part can be inhibited, and only light rays between 600nm and 650nm are allowed to irradiate the CMOS sensor;

3. the CMOS sensor is comprised of a matrix of pixels, a portion of which light stimulates photodiodes within the CMOS sensor to refresh the charge therein and send refresh signals to the modem A, B, pixels not in the active area are modulated by modem a to control when the pixels receive light and not receive light, and pixels in the active area are modulated by modem B to control when the pixels receive light and not receive light;

4. and the other part of the stimulation charge storage entering the CMOS sensor sends a stimulation signal to the modulation and demodulation module B for modulation, and the pixel is controlled to receive light when not receiving the light.

Compared with the prior art, the invention has the beneficial effects that:

1. the four buffer plates and the four arc-shaped ring top plates are connected together to form the impact buffer mechanism, as shown in fig. 1, when a lens is detached and taken off and is idle, the four buffer plates are expanded and unfolded, when the lens falls to the ground carelessly, two of the four buffer plates can firstly impact and contact the ground and are pushed to slide towards the side of a lens shell, when the lens is impacted and pushed to slide, the four connecting rods on the buffer plates can be driven to rotate obliquely and inwards and drive the shifting shaft and the arc-shaped ring top plates to compress the springs on the track shaft to slide towards the head end of the lens so as to buffer and protect the impact force, so that the lens body is prevented from being directly impacted and contacted with the ground, the probability of falling damage is greatly reduced, and the four buffer plates can also deal with the bumping vibration of the lens in the boxing carrying and transferring process, so as to protect the integrity of the lens;

2. the invention can drive the four buffer plates to automatically expand and contract by utilizing the disassembling and assembling actions of the lens, thereby saving the trouble of manually operating the four buffer plates to expand and close when the lens is disassembled and assembled, simplifying the using steps of the lens, saving time and labor, and being convenient and quick;

3. the buffer plate and the four connecting rods jointly form a parallelogram mechanism, the buffer plate can rotate and contract to be attached to the strip groove through the parallelogram mechanism, and the occupation of a supporting space can be reduced and the expansion protrusion can be avoided to prevent the twisting focusing of a lens when the buffer plate contracts;

4. the two built-in filters can accurately intercept light rays of required wave bands, the filters can inhibit high-frequency components (visible light with the wavelength of below 600 nm) in an image received by a 3D camera, can inhibit low-frequency components (visible light with the wavelength of above 650 nm) at the same time, and only allow the light rays between 600nm and 650nm to irradiate the CMOS sensor. The CMOS sensor consists of a plurality of super images, and each pixel can be modulated by a unique modulation signal so as to control when the pixel receives light and when the pixel does not receive light, thereby effectively improving the imaging effect of the lens.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view illustrating a contracted state of the cushion plate according to the present invention;

FIG. 3 is a schematic three-dimensional structure of a lens housing according to the present invention;

FIG. 4 is a schematic view of a strip top frame structure according to the present invention;

FIG. 5 is a schematic view of the top plate of the arc ring of the present invention;

FIG. 6 is a schematic view of a buffer plate according to the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 4 according to the present invention;

FIG. 8 is an imaging flow chart of the present invention;

in the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a lens housing; 101. a rail shaft; 102. a long groove; 103. an arc-shaped annular top plate; 104. a strip top frame; 105. positioning a short shaft; 106. a shaft is poked; 2. a buffer plate; 201. a connecting rod; 202. a track strip frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, embodiment 1 of the present invention: method and apparatus for ambient light suppression, comprising a lens housing 1; the lens shell 1 comprises a strip groove 102, the lens shell 1 is of a cylindrical structure, and four strip grooves 102 are arranged on the outer wall of the circumference of the lens shell in a surrounding manner; two groups of four positioning short shafts 105 are correspondingly welded on the inner walls of the two sides of the four long grooves 102 in a front-back mode, and the two groups of positioning short shafts 105 are rotatably connected with a long buffer plate 2;

two filtering sheets, a CMOS sensor and two modulation and demodulation modules are arranged in the lens shell 1, wherein a photodiode and a charge storage are arranged in the CMOS sensor, and the photodiode and the charge storage are in communication connection with the two modulation and demodulation modules.

Referring to fig. 1, the lens housing 1 further includes an orbit shaft 101, and four sets of eight orbit shafts 101 are disposed around the outer circumferential wall of the lens housing 1, and the four sets of orbit shafts 101 are located between the four elongated grooves 102.

Referring to fig. 1, the lens housing 1 further includes an arc-shaped ring top plate 103, and four arc-shaped ring top plates 103 are mounted on the four sets of track shafts 101 in a penetrating manner through spring pushing.

Referring to fig. 1, the lens housing 1 further includes a long top frame 104, and two long top frames 104 are symmetrically and rearwardly supported and welded in the upper and lower spaced openings of the four arc-shaped top plate 103.

Referring to fig. 1, the lens housing 1 further includes a dial shaft 106, and the dial shaft 106 is welded to both ends of the four arc-shaped top plate 103, and the dial shaft 106 protrudes and extends to the elongated slot 102.

Referring to fig. 6, the buffer plate 2 includes

The two sides of the buffer plate 2 are connected with four connecting rods 201 in a front-back corresponding rotating manner;

the four groups of eight connecting rods 201 on the rear side of the track strip frame 202 are respectively provided with one track strip frame 202 in a supporting and welding mode.

Referring to fig. 4, the dial shafts 106 at the two ends of the four arc-shaped ring top plates 103 are correspondingly inserted and matched with the eight track strip frames 202, the four buffer plates 2 and the four arc-shaped ring top plates 103 are jointly connected to form an impact buffer mechanism, when the lens is detached and taken off and is idle as shown in fig. 1, the four buffer plates 2 are expanded and unfolded, when the lens is inadvertently dropped and contacts the ground, two of the four buffer plates 2 are firstly contacted with the ground in an impact manner and are pushed to slide towards the lens housing 1 side, when the buffer plates 2 are impacted and pushed to slide, the four connecting rods 201 on the buffer plates 2 are driven to rotate obliquely and inwards and drive the dial shafts 106 and the arc-shaped ring top plates 103 to compress the springs on the track shafts 101 to slide towards the head end of the lens, so as to buffer and protect the lens body, so as to avoid the direct impact contact between the lens body and the ground, greatly reduce the probability of damage, and the four buffer plates 2 can also deal with the bumping and vibration of the lens in the process of carrying and transferring the lens box, the integrity of the lens is protected.

Referring to fig. 2, when the lens housing 1 is fastened to the camera, the rear ends of two long top frames 104 are in abutting contact with the camera body, and through the sliding fit of four sets of eight toggle shafts 106 and eight rail frames 202, the four buffer plates 2 can be controlled to rotate and expand and contract by sliding the two long top frames 104 and the four arc ring top plates 103 back and forth, when the lens housing 1 is fastened to the camera, the two long top frames 104 will be in abutting contact with the camera body and pushed to drive the four buffer plates 2 to automatically and synchronously contract and abut against the four long grooves 102 (as shown in fig. 2), when the lens housing 1 is detached from the camera, the springs on the rail shafts 101 will push the four arc ring top plates 103 to reset and then drive the four buffer plates 2 to automatically and synchronously expand (as shown in fig. 1) for buffering use, and further the invention can drive the four buffer plates 2 to automatically expand and contract by the disassembling and assembling actions of the lens, the trouble of folding, unfolding and opening the lens by manually operating the buffer plates 2 at four positions is omitted, the using steps of the lens are simplified, time and labor are saved, and the lens is convenient and quick to use.

Referring to fig. 2, the buffering plate 2 and the four connecting rods 201 form a parallelogram mechanism, and the buffering plate 2 is correspondingly embedded inside the four rectangular grooves 102 when rotating and contracting, through the parallelogram mechanism, the buffering plate 2 can rotate and contract to be attached to the rectangular grooves 102, and the occupation of the supporting space can be reduced and the expansion and support protrusion can be avoided to hinder the twisting focusing of the lens when the buffering plate 2 contracts.

Referring to fig. 8: comprises the following steps

1. Ambient light enters through the front end opening of the 3D camera lens and passes through the two filter plates;

2. the two filter plates can accurately intercept light rays of required wave bands, the filter plates can inhibit a 3D camera from receiving visible light with high-frequency components below 600nm in wavelength in an image, meanwhile, visible light with low-frequency part above 650nm in wavelength can be inhibited, and only the light rays with 600nm are allowed to irradiate the CMOS sensor;

3. the CMOS sensor is comprised of a matrix of pixels, a portion of which light stimulates photodiodes within the CMOS sensor to refresh the charge therein and to signal the refresh to the modem A, B, pixels not in the active area being modulated by modem a to control when the pixels receive light and not receive light, pixels in the active area being modulated by modem B to control when the pixels receive light and not receive light;

Referring to fig. 1 to 8, embodiment 2 of the present invention: method and apparatus for ambient light suppression, comprising a lens housing 1; the lens shell 1 comprises a strip groove 102, the lens shell 1 is of a cylindrical structure, and four strip grooves 102 are arranged on the outer wall of the circumference of the lens shell in a surrounding manner; two groups of four positioning short shafts 105 are correspondingly welded on the inner walls of the two sides of the four long grooves 102 in a front-back mode, and the two groups of positioning short shafts 105 are rotatably connected with a long buffer plate 2;

Referring to fig. 1, the lens housing 1 further includes a long top frame 104, and two long top frames 104 are symmetrically and rearwardly supported and welded in the upper and lower gaps of the four arc-shaped top plate 103.

Referring to fig. 6, the buffer plate 2 includes

one track strip frame 202 is supported and welded on four groups of eight connecting rods 201 on the rear side of the track strip frame 202.

Referring to fig. 4, the shaft 106 at the two ends of the four arc-shaped top plates 103 are correspondingly inserted into the eight track frames 202.

Referring to fig. 2, when the lens housing 1 and the camera are mounted together, the rear ends of the two strips 104 contact the camera body.

Referring to fig. 2, the buffer plate 2 and the four connecting rods 201 form a parallelogram mechanism, and the four buffer plates 2 are correspondingly embedded in the four long grooves 102 when rotating and contracting.

Referring to fig. 8: comprises the following steps

2. the two filter plates can accurately intercept light rays of required wave bands, the filter plates can inhibit a 3D camera from receiving visible light with high-frequency components below 600nm in wavelength in an image, meanwhile, visible light with low-frequency part above 650nm in wavelength can be inhibited, and only light rays between 650nm are allowed to irradiate the CMOS sensor;

The working principle is as follows: the buffer plate 2 and the four connecting rods 201 jointly form a parallelogram mechanism, and the buffer plate 2 can rotate and contract to be attached to the strip groove 102 through the parallelogram mechanism;

through the sliding fit of four groups of eight toggle shafts 106 and eight track strip frames 202, the two long strip top frames 104 and the four arc ring top plates 103 which slide back and forth can drive and control the four buffer plates 2 to rotate, expand and contract, when the lens shell 1 is buckled and mounted with a camera, the two long strip top frames 104 can be abutted against and contacted with the camera body and pushed to drive the four buffer plates 2 which slide forward to control the four buffer plates to automatically and synchronously contract and be abutted against the four strip grooves 102 (as shown in fig. 2), when the lens shell 1 is disassembled and separated from the camera, the springs on the track shafts 101 can push the four arc ring top plates 103 to reset and then drive the four buffer plates 2 which slide to automatically and synchronously expand (as shown in fig. 1) for buffering;

the four buffer plates 2 are connected with the four arc-shaped ring top plates 103 together to form an impact buffer mechanism, as shown in fig. 1, when the lens is detached and taken down and is left unused, the four buffer plates 2 are expanded and unfolded, when the lens drops to touch the ground carelessly, two of the four buffer plates 2 are firstly in impact contact with the ground and are pushed to slide towards the side of the lens shell 1, and when the buffer plates 2 are impacted and pushed to slide, the four connecting rods 201 on the buffer plates 2 are driven to incline and rotate inwards and drive the shifting shaft 106 and the arc-shaped ring top plates 103 to compress springs on the track shaft 101 to slide towards the head end of the lens, so that impact force is buffered.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An apparatus for ambient light suppression, characterized by: an ambient light suppression device comprising:

a lens housing; the lens housing includes

The lens shell is of a cylindrical structure, and four elongated grooves are formed in the outer wall of the circumference of the lens shell in a surrounding mode;

two groups of four positioning short shafts are correspondingly welded on the inner walls of the two sides of the long groove in the front and back directions, and the two groups of positioning short shafts are rotatably connected with a long buffer plate;

two filtering plates, a CMOS sensor and two modulation and demodulation modules are arranged in the lens shell, wherein a photodiode and a charge storage are arranged in the CMOS sensor, and the photodiode and the charge storage are in communication connection with the two modulation and demodulation modules;

the lens shell also comprises track shafts, four groups of eight track shafts are arranged on the circumferential outer wall of the lens shell in a surrounding manner, and the four groups of track shafts are positioned among the four long grooves;

the lens shell also comprises arc-shaped ring top plates, and four arc-shaped ring top plates are sleeved on the four groups of track shafts in a pushing and penetrating manner through springs;

the lens shell further comprises a long strip top frame, and two long strip top frames are symmetrically and backwards supported and welded in the upper and lower spacing openings of the arc-shaped annular top plate at four positions;

the lens shell further comprises a shifting shaft, wherein the shifting shaft is welded at two ends of the arc-shaped annular top plate at four positions and protrudes to extend to the long groove;

the buffer plate includes:

the four groups of eight connecting rods on the rear side are respectively provided with one track strip frame in a supporting and welding mode;

the shifting shafts at two ends of the top plate of the arc-shaped ring at four positions are correspondingly matched with the eight track strip frames in an inserted manner;

when the lens shell and the camera are buckled and installed together, the rear ends of the two long strip top frames are in abutting contact with the camera body;

the buffer plate and the four connecting rods jointly form a parallelogram mechanism, and the buffer plate is correspondingly embedded in the four long grooves when rotating and contracting.

2. The method for ambient light suppression of the device of claim 1, wherein: the method comprises the following steps:

(1) the ambient light enters through the front end opening of the 3D camera lens and passes through the two filter plates;

(2) the two optical filters can accurately intercept light rays in required wave bands, the optical filters can inhibit high-frequency components in images received by the 3D camera, the high-frequency components are visible light with the wavelength of below 600nm, and can inhibit low-frequency components at the same time, the low-frequency components are visible light with the wavelength of above 650nm, and only light rays with the wavelength of 600nm-650nm are allowed to irradiate the CMOS sensor;

(3) the CMOS sensor is comprised of a matrix of pixels, a portion of which light stimulates photodiodes within the CMOS sensor to refresh the charge therein and send the refresh signal to the modem A, B, pixels not in the active area are modulated by modem a to control when the pixels receive light and not receive light, and pixels in the active area are modulated by modem B to control when the pixels receive light and not receive light;

(4) and the other part of the stimulation charge storage enters the CMOS sensor, and the charge storage sends a stimulation signal to the modulation and demodulation module B for modulation, so that when the pixel receives light, the pixel does not receive light.