CN212060715U

CN212060715U - Multiplying power feedback lens based on coding mode

Info

Publication number: CN212060715U
Application number: CN202020657797.3U
Authority: CN
Inventors: 邓崇凯; 谭晓军; 周峰
Original assignee: Dongguan Pomeas Precision Instrument Co ltd
Current assignee: Dongguan Pomeas Precision Instrument Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-12-01
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a multiplying power feedback camera lens based on coding form, including the urceolus, the urceolus upper end is fixed with eyepiece subassembly, the urceolus lower extreme is fixed with objective assembly, through an inner lens cone fixed connection between eyepiece subassembly and the objective assembly, swing joint has the zoom linkage subassembly on the inner lens cone, the zoom linkage subassembly includes that rotatable cover is located the outer runner assembly of endoscope section of thick bamboo, the runner assembly upper end is equipped with signal feedback subassembly, the signal feedback subassembly will with the form that reflection and coding combine the multiplying power feedback output of zoom linkage subassembly. The utility model discloses a multiplying power feedback camera lens to the multiplying power feedback output of the form that reflection and code combine will become doubly linkage subassembly improves multiplying power feedback precision.

Description

Multiplying power feedback lens based on coding mode

Technical Field

The utility model belongs to the technical field of the camera lens, especially, relate to a multiplying power feedback camera lens based on coding mode.

Background

In the prior art, a manual zoom lens is widely applied to various measurement environments, the magnification value of the lens is read mainly by manual visual observation, on one hand, the magnification value of the lens is easy to be misread, and on the other hand, when the lens needs to be adjusted, the current magnification value of the lens is read by manual work, and then the corresponding magnification parameter in software is selected. The existing reflection type electronic feedback device has a large reflection surface, so that the precision of the existing reflection type electronic feedback device cannot meet the use requirement.

Therefore, the inventors have endeavored to design a magnification feedback lens to solve the above-described problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the magnification feedback lens based on the coding form outputs the magnification feedback of the variable magnification linkage assembly in a form of combining reflection and coding, and improves the precision of the magnification feedback.

In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a multiplying power feedback camera lens based on code form, includes the urceolus, the urceolus upper end is fixed with eyepiece subassembly, the urceolus lower extreme is fixed with objective lens subassembly, through an inner lens cone fixed connection between eyepiece subassembly and the objective lens subassembly, swing joint has the zoom linkage subassembly on the inner lens cone, the zoom linkage subassembly includes that rotatable cover is located the outer runner assembly of endoscope section of thick bamboo, the runner assembly upper end is equipped with signal feedback subassembly, the signal feedback subassembly will with the form of reflection and code combination the multiplying power feedback output of zoom linkage subassembly.

As the utility model discloses a change of multiplying power feedback camera lens based on coding form, the signal feedback subassembly includes correlation formula optical coupler and a coding section of thick bamboo, correlation formula optical coupler is fixed in on the urceolus, the fixed cover of a coding section of thick bamboo is located rotating assembly is last.

The correlation optical coupler is formed by installing gallium arsenide infrared luminotron and silicon phototriode on the bracket with groove in the middle in opposite direction. When there is no object in the groove, the light emitted from the gallium arsenide luminotron directly shines on the window of the silicon phototriode, thereby generating a certain large current output. The device is suitable for circuits such as photoelectric control and photoelectric metering, and can detect the existence, the movement direction, the rotating speed and the like of an object.

As the utility model discloses change of multiplying power feedback camera lens based on coding form, the spacer sleeve is equipped with a plurality of light collars on the coding section of thick bamboo, the light collar with correlation formula optical coupler corresponds and matches, the slit formation gray sign indicating number has been seted up on the light collar.

The Gray code (Gray code) is a quasi-weight code, and if the lowest bit of the Gray code is n ^ 1, the absolute value of the weight of the Gray code is (2^ n) -1, and the signs of the weight alternate from left to right. The typical gray code is a single-step self-complementary code with reflection and cycle characteristics, the cycle, single-step characteristic eliminates the possibility of a great error in random access, and the reflection, self-complementary characteristic makes the inversion very convenient. The gray code belongs to reliable coding and is a coding mode with minimized errors.

As the utility model discloses change of multiplying power feedback camera lens based on coding mode, the fixed cover of runner assembly lower extreme is equipped with the holding ring, the multiplying power scale of runner assembly last fixed multiple speed recess with gray code three one-to-one.

Preferably, the number of the light blocking rings is four, and the corresponding relationship between the slit position and the magnification scale is shown in the following table:

the four light-blocking rings are sequentially represented as a light-blocking ring 1, a light-blocking ring 2, a light-blocking ring 3 and a light-blocking ring 4 from top to bottom, the number 1 in the table represents that the slit is matched with the corresponding correlation type optical coupler, and the number 0 in the table represents that the matching of the correlation type optical coupler is blocked by the corresponding light-blocking ring.

As the utility model discloses a change of multiplying power feedback camera lens based on coding form, the zoom linkage subassembly is still including the linkage subassembly that is used for the focus zoom and the zoom subassembly that is used for changing the camera lens multiplying power, linkage subassembly and zoom subassembly top-down accept in proper order in the inner tube.

As the utility model discloses a change of multiplying power feedback camera lens based on coding form, the runner assembly includes a zoom curve section of thick bamboo and a zoom hand wheel, the rotatable cover of zoom curve section of thick bamboo is located outside the scope section of thick bamboo, the fixed cover of zoom hand wheel is located on the zoom curve section of thick bamboo.

As the utility model discloses a change of multiplying power feedback camera lens based on coding form, the multiplying power scale is located on the variable-power hand wheel, a coding section of thick bamboo and holding ring are fixed the cover in proper order and are located both ends about the variable-power hand wheel.

As the utility model discloses change of multiplying power feedback camera lens based on coding form, the variable-power curve section of thick bamboo top-down interval is equipped with two helicla flutes, linkage subassembly and variable-power subassembly pass corresponding helicla flute through the guide nail respectively with variable-power curve section of thick bamboo sliding connection.

As a change of the magnification feedback lens based on the coding form of the utility model, the inner lens cone is provided with two strip-shaped holes for the guide nail to pass through.

When the zooming curve cylinder and the zooming hand wheel rotate together, the two guide nails move up and down along the strip-shaped holes.

Compared with the prior art, the utility model discloses multiplying power feedback camera lens based on coding form through setting up the signal feedback subassembly in the linkage subassembly upper end that becomes doubly, the signal feedback subassembly will with the form that reflection and coding combine the multiplying power feedback output of the linkage subassembly that becomes doubly improves multiplying power feedback precision and degree of accuracy, improves work efficiency.

Description of the drawings:

fig. 1 is a perspective view of a magnification feedback lens of the present invention;

fig. 2 is a cross-sectional view of the magnification feedback lens of the present invention;

FIG. 3 is a perspective view of the magnification feedback lens of the present invention with the outer barrel removed;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a perspective view of the zoom linkage assembly after the zoom hand wheel is removed.

Illustration of the drawings:

1. the outer cylinder, 2, the rotating assembly, 21, the zooming handwheel, 22, the zooming curve cylinder, 221, the zooming spiral groove, 222, the linkage spiral groove, 3, the positioning assembly, 31, the ball, 32, the positioning ring, 321, the fixed multiple groove, 33, the connecting piece, 4, the inner lens cone, 41, the strip-shaped hole, 5, the zooming lens seat, 51, the zooming guide nail, 6, the rear lens seat, 61, the rear lens group, 7, the linkage lens seat, 71, the linkage guide nail, 8, the front lens seat, 81, the front lens group, 9, the signal feedback assembly, 91, the correlation type photoelectric coupler, 92, the coding cylinder, 921, the light blocking ring, 9211 and the slit.

Detailed Description

The following embodiments of the present invention will be specifically explained with reference to the accompanying drawings, which are only used for reference and illustration, and do not limit the scope of the present invention.

Referring to fig. 1 to 3, a magnification feedback lens based on a coding mode includes an outer barrel 1, a zoom linkage assembly (not shown), an eyepiece assembly (not shown), an objective lens assembly (not shown), a positioning assembly 3, an inner barrel 4 and a signal feedback assembly 9.

Referring to fig. 1, a magnification display window (not marked) is arranged on an outer barrel 1, an eyepiece assembly is fixed at the upper end of the outer barrel 1, an objective assembly is fixed at the lower end of the outer barrel 1, the eyepiece assembly and the objective assembly are fixedly connected through an inner lens barrel 4, a zoom linkage assembly and a signal feedback assembly 9 are accommodated in the outer barrel 1, a side cover (not marked) is arranged on one side cover of the upper end of the outer barrel 1, and a part of the signal feedback assembly 9 is located in the side cover.

Referring to fig. 2 to 3, the signal feedback assembly 9 outputs the magnification feedback of the variable magnification linkage assembly in a form of combining reflection and coding, the signal feedback assembly 9 is located at the upper end of the variable magnification linkage assembly, the signal feedback assembly 9 includes a correlation optical coupler 91 and a coding cylinder 92, in this embodiment, preferably, four correlation optical couplers 91 are provided, the four correlation optical couplers 91 are fixed in the side cover of the outer cylinder 1 through a control circuit board (not labeled), and the four correlation optical couplers 91 are arranged in a row and overlapped on the control circuit board, the coding cylinder 92 is arranged on the variable magnification linkage assembly, a plurality of light blocking rings 921 are sleeved on the coding cylinder 92 at intervals, all the light blocking rings 921 correspond to and match with the correlation optical couplers 91 (i.e. the four correlation optical couplers 91 need to correspond to the four light blocking rings 921 one by one), the light blocking rings 921 partially extend into the grooves of the corresponding correlation optical couplers 91, each light blocking ring 921 is provided with a slit 9211 to form a gray code.

Referring to fig. 2 and 5, the zooming linkage assembly is used for controlling the magnification of a lens, the zooming linkage assembly is movably connected with the inner lens barrel 4, the zooming linkage assembly comprises a rotatable rotating assembly 2, a linkage assembly (not marked) and a zooming assembly (not marked), the rotating assembly 2 comprises a zooming curve barrel 22 and a zooming handwheel 21, the zooming curve barrel 22 is rotatably sleeved outside the inner lens barrel 4, the zooming curve barrel 22 is provided with two spiral grooves at intervals from top to bottom, the upper spiral groove is a linkage spiral groove 222, the lower spiral groove is a zooming spiral groove 221, the zooming handwheel 21 is fixedly sleeved on the zooming curve barrel 22, the coding barrel 92 is fixedly sleeved at the upper end of the zooming curve barrel 22, the zooming handwheel 21 is provided with magnification scales, the magnification scales are partially exposed on a magnification display window of the outer barrel 1, when the zooming handwheel 21 is manually rotated, the zooming curve barrel 22 and the zooming handwheel 21 rotate together, the linkage assembly and the zooming assembly are sequentially accommodated in the inner lens cone 4 from top to bottom, the inner lens cone 4 is vertically provided with a strip-shaped hole 41, the linkage assembly comprises a linkage lens base 7 and a linkage lens group (not shown) arranged on the linkage lens base 7, a linkage guide nail 71 is fixed on the side surface of the linkage lens base 7, the linkage guide nail 71 penetrates through the strip-shaped hole 41 in a clearance mode and then extends into a linkage spiral groove 222, so that the linkage assembly is in sliding connection with the zooming curve cylinder 22, the zooming assembly comprises a zooming lens base 5 and a zooming lens group (not shown) arranged on the zooming lens base 5, a zooming guide nail 51 is fixed on the side surface of the zooming lens base 5, and the zooming guide nail 51 penetrates through the strip-shaped hole 41 in a clearance mode and then extends into a zooming spiral groove 221, so that the zooming assembly is in sliding connection with the zooming curve.

Referring to fig. 2 and 3, the positioning assembly 3 is located at the lower end of the lens, the positioning assembly 3 includes a ball 31, a positioning ring 32 and a connecting piece 33 with a certain elasticity, the positioning ring 32 is fixedly sleeved at the lower end of the zooming handwheel 21, a plurality of fixed speed-multiplying grooves 321 are arranged at intervals on the side surface of the positioning ring 32, the multiplying scales on the zooming handwheel 21, the fixed speed-multiplying grooves 321 on the positioning ring 32 and the gray codes correspond to each other one by one, the lower end of the connecting piece 33 is fixed on the outer barrel 1 through a sleeve, and the upper end of the connecting piece 33 is movably connected with the positioning ring 32 through the rotatable ball 31.

The utility model discloses a preferred four of the quantity of multiplying power feedback camera lens barn door 921, when the barn door 921 and the quantity of correlation formula optical coupler 91 were four, the corresponding relation between slit position and the multiplying power scale on the barn door is as shown in following table one:

watch 1

The four light-blocking rings are sequentially represented as a light-blocking ring 1, a light-blocking ring 2, a light-blocking ring 3 and a light-blocking ring 4 from top to bottom, the numeral 1 in the table represents that the slit is matched with the corresponding correlation type optical coupler, and the numeral 0 in the table represents that the correlation type optical coupler is blocked by the corresponding light-blocking ring (namely, the slit is not rotated into the groove of the corresponding correlation type optical coupler).

Referring to fig. 2, the eyepiece assembly includes a rear lens seat 6 and a rear lens group 61, the rear lens seat 6 is fixed at the top end of the inner barrel 4, the rear lens group 61 is installed in the rear lens seat 6, the objective assembly includes a front lens seat 8 and a front lens group 81, the front lens seat 8 is fixed at the bottom of the inner barrel 4, the front lens group 81 is installed in the front lens seat 8, in this embodiment, the rear lens group 61, the linkage lens group, the zoom lens group and the front lens group 81 are all lenses or a combination of lenses, and the four lens groups are sequentially arranged in the feedback lens from top to bottom.

Referring to fig. 1 to 5, when the magnification feedback lens of the present invention is used, the magnification feedback lens is aligned with the object to be measured (or the eyepiece assembly of the magnification feedback lens of the present invention can be connected with the image measuring instrument), the zoom hand wheel 21 in the magnification display window is manually rotated to rotate the zoom curve cylinder 22 along its central axis (the inner lens cone 4 is still), on one hand, the linkage spiral groove 222 on the zoom curve cylinder 22 drives the linkage guide nail 71 to move up and down along the bar-shaped hole 41 of the inner lens cone 4, the linkage guide nail 71 drives the linkage lens base 7 and the linkage lens assembly to move up and down along the inner side of the inner lens cone 4, meanwhile, the zoom spiral groove 221 on the zoom curve cylinder 22 drives the zoom guide nail 51 to move up and down along the bar-shaped hole 41 of the inner lens cone 4, the zoom guide nail 51 drives the zoom lens base 5 and the zoom lens assembly to move up and down along, at this time, the distances between the linkage lens set and the zoom lens set and the object image are changed, so that the magnification of the magnification feedback lens of the present invention is changed, on the other hand, the zoom curve cylinder 22 drives the positioning ring 32 to rotate, the relative position between the fixed multiple groove 321 on the positioning ring 32 and the ball 31 is changed, when the fixed multiple groove 321 rotates to the position of the ball 31, the ball 31 is embedded into the fixed multiple groove 321 under the action of the connecting piece 33, the positioning ring 32 is clamped, the zoom curve cylinder 22 is prevented from continuing to rotate, so that the magnification position is accurately determined, when the magnification needs to be continuously adjusted, when the rotating force of the zoom hand wheel 21 is increased, the ball 31 extrudes the connecting piece 33 outwards, slides out of the fixed multiple groove 321, the zoom curve cylinder 22 drives the positioning ring 32 to continue to rotate until the ball 31 is embedded into the next fixed multiple groove 321, furthermore, the coding cylinder 92 rotates around the center thereof, the four light blocking rings 921 are driven to rotate, the reflection state of the opposite-emission photoelectric coupler 91 of the light blocking rings 921 is changed through the slits 9211, the control circuit board reads corresponding level signals to process, and the current magnification of the lens is accurately fed back to the upper computer.

The utility model discloses a multiplying power feedback camera lens is with the Gray code of slit formation on the fixed multiple speed recess on the holding ring and the encoder cylinder and the multiplying power scale one-to-one on the hand wheel, reads the level signal that corresponds and handles through the circuit, realizes accurately feeding back the host computer with the current multiplying power of camera lens, the utility model discloses in, the design precision of reflective reaches 15 degrees, and the design precision of slit can reach 1 degree, and the precision has reached current operation requirement.

The above disclosure is only for the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and the scope of the present invention is not intended to be limited thereby.

Claims

1. The utility model provides a multiplying power feedback camera lens based on code form, includes the urceolus, the urceolus upper end is fixed with the eyepiece subassembly, the urceolus lower extreme is fixed with the objective lens subassembly, through an inner lens cone fixed connection between eyepiece subassembly and the objective lens subassembly, its characterized in that, swing joint has the zoom linkage subassembly on the inner lens cone, the zoom linkage subassembly includes rotatable cover and locates the rotating assembly outside the endoscope section of thick bamboo, the rotating assembly upper end is equipped with signal feedback subassembly, the signal feedback subassembly with the form of reflection and code combination will the multiplying power feedback output of zoom linkage subassembly.

2. The magnification feedback lens based on the coding mode as claimed in claim 1, wherein the signal feedback assembly comprises a correlation optical coupler and a coding cylinder, the correlation optical coupler is fixed on the outer cylinder, and the coding cylinder is fixedly sleeved on the rotating assembly.

3. The magnification feedback lens based on the coding form of claim 2, wherein a plurality of light blocking rings are arranged on the coding cylinder at intervals, the light blocking rings correspond to and match with the correlation type optical coupler, and a slit is arranged on each light blocking ring to form a gray code.

4. The magnification feedback lens based on the coding mode as claimed in claim 3, wherein a positioning ring is sleeved on the lower end of the rotating component, and the magnification scale of the rotating component, the constant-speed groove on the positioning ring and the gray code correspond to each other one by one.

5. The magnification feedback lens based on the encoding form of the claim 4, wherein the number of the light blocking rings is four, and the corresponding relationship between the slit position and the magnification scale is shown in the following table:

6. The magnification feedback lens based on the coding form of claim 4, wherein the zoom linkage assembly further comprises a linkage assembly and a zoom assembly, and the linkage assembly and the zoom assembly are accommodated in the inner lens barrel from top to bottom in sequence.

7. The magnification feedback lens based on the coding mode as claimed in claim 6, wherein the rotation assembly comprises a zoom curve barrel and a zoom handwheel, the zoom curve barrel is rotatably sleeved outside the endoscope barrel, and the zoom handwheel is fixedly sleeved on the zoom curve barrel.

8. The magnification feedback lens based on the coding mode as claimed in claim 7, wherein the magnification scale is located on the variable-magnification hand wheel, and the coding cylinder and the positioning ring are sequentially and fixedly sleeved at the upper and lower ends of the variable-magnification hand wheel.

9. The magnification feedback lens based on the coding form of claim 7, wherein the magnification-varying cylinder is provided with two spiral grooves at intervals from top to bottom, and the linkage component and the magnification-varying component are respectively connected with the magnification-varying cylinder in a sliding manner through corresponding spiral grooves by guide pins.

10. The magnification feedback lens based on the encoding form of claim 9, wherein the inner barrel is provided with a strip-shaped hole for two guide pins to pass through in a clearance manner.