阅读说明：本技术 一种基于可变电阻形式的倍率反馈镜头 (Multiplying power feedback lens based on variable resistance form ) 是由 邓崇凯 魏荣财 谭晓军 周峰 于 2020-04-26 设计创作，主要内容包括：本发明公开了一种基于可变电阻形式的倍率反馈镜头,包括外筒,所述外筒上端固定有目镜组件,所述外筒下端固定有物镜组件,所述目镜组件与物镜组件之间通过一内镜筒固定连接,所述内镜筒上活动连接有变倍联动组件,所述变倍联动组件包括可转动的套设于所述内镜筒外的转动组件,所述转动组件上端设有信号反馈组件,所述信号反馈组件上下移动以可变电阻的形式将所述变倍联动组件的倍率反馈输出。本发明通过可变电阻形式将倍率反馈输出,提高倍率反馈精度和防电磁干扰能力。(The invention discloses a multiplying power feedback lens based on a variable resistance form, which comprises an outer barrel, wherein an eyepiece assembly is fixed at the upper end of the outer barrel, an objective assembly is fixed at the lower end of the outer barrel, the eyepiece assembly and the objective assembly are fixedly connected through an inner lens barrel, a multiplying power linkage assembly is movably connected onto the inner lens barrel, the multiplying power linkage assembly comprises a rotating assembly which is rotatably sleeved outside the inner lens barrel, a signal feedback assembly is arranged at the upper end of the rotating assembly, and the signal feedback assembly moves up and down to output the multiplying power feedback of the multiplying power linkage assembly in the form of variable resistance. The invention outputs the multiplying power feedback in a variable resistance mode, thereby improving the multiplying power feedback precision and the anti-electromagnetic interference capability.)

1. The utility model provides a multiplying power feedback camera lens based on variable resistance 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, its characterized in that, swing joint has the zoom linkage subassembly on the inner lens cone, the zoom linkage subassembly includes that rotatable cover is located the outer rotating assembly of scope section of thick bamboo, the rotating assembly upper end is equipped with signal feedback subassembly, signal feedback subassembly reciprocates will with variable resistance's form the multiplying power feedback output of zoom linkage subassembly.

2. The magnification feedback lens based on the variable resistance form of claim 1, wherein the signal feedback assembly comprises a variable resistance guide pin which can move up and down and a sliding resistor which is fixed on the outer cylinder through a circuit board, one end of the variable resistance guide pin is connected with the rotating assembly in a sliding mode, and the other end of the variable resistance guide pin is fixedly connected with a driving rod of the sliding resistor.

3. The magnification feedback lens based on the variable resistance form of claim 2, wherein the rotating assembly comprises a resistance-variable curve barrel, the resistance-variable curve barrel is rotatably sleeved outside the endoscope barrel, a resistance-variable spiral groove is formed in the resistance-variable curve barrel, and the resistance-variable guide pin is slidably connected with the resistance-variable spiral groove.

4. The magnification feedback lens based on the variable resistance form of claim 3, wherein the varistor curve cylinder is sleeved with a guide cylinder, the guide cylinder is fixedly connected with the outer cylinder, and the varistor guide nail passes through a strip-shaped guide hole of the guide cylinder and extends into the varistor spiral groove.

5. The magnification feedback lens based on the variable resistance form as claimed in claim 4, wherein the guide cylinder is externally sleeved with a collar, and the variable resistance guide nail passes through the side wall of the collar and is fixed on the collar.

6. The magnification feedback lens based on the variable resistor form as claimed in claim 4, wherein a positioning ring is sleeved on the lower end of the rotating component, and the positioning ring is movably connected with the connecting piece on the outer cylinder through a rotatable ball.

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

8. The magnification feedback lens based on the variable resistance form of claim 7, wherein the rotation assembly further comprises a zoom curve barrel and a zoom handwheel, the zoom curve barrel is rotatably sleeved outside the endoscope barrel, and the zoom curve barrel and the zoom handwheel are respectively and fixedly sleeved at the upper end and the lower end of the zoom curve barrel.

9. The magnification feedback lens based on the variable resistance 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 variable resistance 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.

Technical Field

The invention belongs to the technical field of lenses, and particularly relates to a multiplying power feedback lens based on a variable resistor form.

Background

Disclosure of Invention

The invention aims to: the multiplying power feedback lens based on the variable resistor form is provided, multiplying power is fed back and output through the variable resistor form, and multiplying power feedback precision and electromagnetic interference resistance are improved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention relates to a change of a multiplying power feedback lens based on a variable resistor form, which comprises an outer barrel, wherein an eyepiece assembly is fixed at the upper end of the outer barrel, an objective assembly is fixed at the lower end of the outer barrel, the eyepiece assembly and the objective assembly are fixedly connected through an inner lens barrel, a multiplying power linkage assembly is movably connected onto the inner lens barrel, the multiplying power linkage assembly comprises a rotating assembly which is rotatably sleeved outside the inner lens barrel, a signal feedback assembly is arranged at the upper end of the rotating assembly, and the signal feedback assembly moves up and down to output the multiplying power feedback of the multiplying power linkage assembly in the variable resistor form.

As a change of the multiplying power feedback lens based on the variable resistance form, the signal feedback assembly comprises a variable resistance guide pin capable of moving up and down and a sliding resistor fixed on the outer cylinder through a circuit board, one end of the variable resistance guide pin is connected with the rotating assembly in a sliding mode, and the other end of the variable resistance guide pin is fixedly connected with a driving lever of the sliding resistor.

The sliding resistor is an important element in the circuit, and can change the resistance of the sliding piece or the deflector rod (namely, the variable resistance guide pin) by moving the position of the sliding piece or the deflector rod, so as to play a role of a control circuit. In circuit analysis, the slide rheostat can be used as a constant value resistor or a variable value resistor.

As a change of the magnification feedback lens based on the variable resistance form, the rotating assembly comprises a variable resistance curve barrel, the variable resistance curve barrel is rotatably sleeved outside the endoscope barrel, a variable resistance spiral groove is formed in the variable resistance curve barrel, and the variable resistance guide nail is in sliding connection with the variable resistance spiral groove.

As a change of the magnification feedback lens based on the variable resistance form, a guide cylinder is sleeved outside the variable resistance curve cylinder and fixedly connected with the outer cylinder, and the variable resistance guide nail penetrates through a strip-shaped guide hole of the guide cylinder and extends into the variable resistance spiral groove.

As a change of the magnification feedback lens based on the variable resistance form, a lantern ring is sleeved on the outer gap of the guide cylinder, and the variable resistance guide nail penetrates through the side wall of the lantern ring and is fixed on the lantern ring.

As a change of the multiplying power feedback lens based on the variable resistance form, the lower end of the rotating assembly is sleeved with a positioning ring, and the positioning ring is movably connected with a connecting sheet on the outer cylinder through a rotatable ball.

As a change of the magnification feedback lens based on the variable resistance form, the zooming linkage assembly also comprises a linkage assembly for focal length zooming and a zooming assembly for changing the magnification of the lens, and the linkage assembly and the zooming assembly are sequentially accommodated in the inner lens cone from top to bottom.

As a change of the magnification feedback lens based on the variable resistance form, the rotating assembly further comprises a zooming curve cylinder and a zooming hand wheel, the zooming curve cylinder is rotatably sleeved outside the endoscope cylinder, and the zooming curve cylinder and the zooming hand wheel are respectively and fixedly sleeved at the upper end and the lower end of the zooming curve cylinder.

As a change of the magnification feedback lens based on the variable resistance form, the magnification-varying curve cylinder is provided with two spiral grooves at intervals from top to bottom, and the linkage component and the magnification-varying component are respectively in sliding connection with the magnification-varying curve cylinder through corresponding spiral grooves penetrated by guide pins.

As a change of the magnification feedback lens based on the variable resistance form, the inner lens cone is provided with a strip-shaped hole for two guide nails to pass through in a clearance way.

Because the variable resistance curve cylinder is fixedly connected with the variable-power hand wheel, when the variable-power hand wheel rotates, the variable resistance curve cylinder also rotates together, and the variable resistance guide nail moves up and down along the strip-shaped hole.

Compared with the prior art, the magnification feedback lens based on the variable resistor mode has the advantages that the signal feedback component is arranged at the upper end of the variable magnification linkage component, the signal feedback component moves up and down to feed back and output the magnification of the variable magnification linkage component in the variable resistor mode, and the electromagnetic interference resistance and the magnification feedback precision of the lens are improved.

Description of the drawings:

FIG. 1 is a partially exploded perspective view of a magnification feedback lens of the present invention;

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

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

FIG. 4 is an exploded perspective view of the magnification feedback lens of the present invention with the outer barrel and the rotating assembly removed;

fig. 5 is a perspective view of the zoom linkage assembly with the zoom handwheel removed.

Illustration of the drawings:

1. the outer cylinder, 11, the guide cylinder, 111, the bar-shaped guide hole, 2, the rotating component, 21, the variable-magnification hand wheel, 22, the variable-magnification curve cylinder, 221, the variable-magnification spiral groove, 222, the linkage spiral groove, 23, the variable-resistance curve cylinder, 231, the variable-resistance spiral groove, 3, the positioning component, 31, the ball, 32, the positioning ring, 321, the fixed-magnification groove, 33, the connecting piece, 4, the inner lens cone, 41, the bar-shaped hole, 5, the variable-magnification lens base, 51, the variable-magnification guide nail, 52, the variable-magnification lens group, 6, the rear lens base, 61, the rear lens group, 7, the linkage lens base, 71, the linkage guide nail, 72, the linkage lens group, 8, the front lens base, 81, the front lens group, 9, the signal feedback component, 91, the lantern ring, 92, and the variable.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustration only and are not to be construed as limiting the scope of the invention.

Referring to fig. 1 to 3, a variable resistance based magnification feedback lens includes an outer barrel 1, a variable magnification 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 capable of moving up and down.

Referring to fig. 1 and 3, a magnification display window (not marked) is arranged on the 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 variable resistor form 9 are accommodated in the outer barrel 1, a side cover (not marked) is arranged on one side cover at the upper end of the outer barrel 1, a part of a signal feedback assembly 9 is positioned in the side cover, a guide barrel 11 is fixedly connected to the outer barrel 1, and a strip-shaped guide hole 111 is arranged on the side wall of the.

Referring to fig. 2 and 3, the signal feedback assembly 9 moves up and down to output the magnification feedback of the variable magnification linkage assembly in the form of a variable resistance, the signal feedback assembly 9 is located at the upper end of the variable magnification linkage assembly, the signal feedback assembly 9 includes a lantern ring 91, a variable resistance guide pin 92 capable of moving up and down, and a sliding resistor (not shown), the sliding resistor is fixed on the outer cylinder 1 through a circuit board, the circuit board is electrically connected with the sliding resistor, the lantern ring 91 is sleeved outside the guide cylinder 11 in a clearance manner, one end of the variable resistance guide pin 92 penetrates through the side wall of the lantern ring 91 and is fixed on the lantern ring 91, and the other end of the variable resistance guide pin 92 is fixedly.

Referring to fig. 2 to 5, the zoom linkage assembly is used for controlling the magnification of a lens, the zoom linkage assembly is movably connected with the inner lens barrel 4, the zoom linkage assembly comprises a rotatable rotating assembly 2, a linkage assembly (not marked) and a zoom assembly (not marked), the rotating assembly 2 comprises a zoom curve barrel 22, a zoom hand wheel 21 and a varistor curve barrel 23, the zoom curve barrel 22 is rotatably sleeved outside the inner lens barrel 4, the zoom 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 zoom spiral groove 221, the varistor curve barrel 23 is fixedly sleeved at the upper end of the zoom curve barrel 22, the guide barrel 11 is sleeved outside the varistor curve barrel 23, the varistor spiral groove 23 is arranged on the varistor curve barrel 23, the varistor guide pin 92 passes through the side wall of the guide ring 91, then passes through the strip-shaped guide hole 111 of the guide barrel 11 and extends into the varistor spiral groove 231, so as to be connected with the variable-resistance curve cylinder 23 in a sliding way, the variable-power hand wheel 21 is fixedly sleeved at the lower end of the variable-power curve cylinder 22, the variable-power hand wheel 21 is provided with power scales, the power scales are partially exposed on a power display window of the outer cylinder 1, when the variable-power hand wheel 21 is rotated manually, the variable-power hand wheel 21, the variable-power curve cylinder 22 and the variable-resistance curve cylinder 23 rotate together, the linkage component and the variable-power component are sequentially accommodated in the inner lens cylinder 4 from top to bottom, the inner lens cylinder 4 is vertically provided with a strip-shaped hole 41, the linkage component comprises a linkage lens base 7 and a linkage lens group 72 arranged on the linkage lens base 7, the side surface of the linkage lens base 7 is fixedly provided with a linkage guide nail 71, the linkage guide nail 71 penetrates through the strip-shaped hole 41 and extends into a linkage spiral groove 222, so that the linkage component is connected with the variable-power curve cylinder 22 in a sliding way, the, the side of the zoom lens seat 5 is fixed with a zoom guide nail 51, and the zoom guide nail 51 passes through the strip-shaped hole 41 with a clearance and extends into the zoom spiral groove 221, so that the zoom assembly is connected with the zoom curved cylinder 22 in a sliding manner.

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 constant-speed grooves 321 are arranged at intervals on the side surface of the positioning ring 32, the magnification scales on the zooming handwheel 21, the constant-speed grooves 321 on the positioning ring 32 and the signal feedback assembly 9 are in one-to-one correspondence, 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.

Referring to fig. 2, the eyepiece assembly includes a rear lens holder 6 and a rear lens group 61, the rear lens holder 6 is fixed at the top end of the inner barrel 4, the rear lens group 61 is installed in the rear lens holder 6, the objective assembly includes a front lens holder 8 and a front lens group 81, the front lens holder 8 is fixed at the bottom of the inner barrel 4, the front lens group 81 is installed in the front lens holder 8, in this embodiment, the rear lens group 61, the linkage lens group 72, the zoom lens group 52 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 is connected with the image measuring instrument), the zoom handwheel 21 in the magnification display window is manually rotated to rotate the zoom curve cylinder 22 along the central axis thereof (the inner lens cone 4 is stationary), 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 strip-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 72 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 strip-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 52 to move up and, at this time, the distances between the linkage lens set 72 and the zoom lens set 52 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-magnification groove 321 on the positioning ring 32 and the ball 31 is changed, when the fixed-magnification groove 321 rotates to the position of the ball 31, the ball 31 is embedded into the fixed-magnification groove 321 under the action of the connecting piece 33, the ball 31 clamps the positioning ring 32, and the zoom curve cylinder 22 is prevented from continuing to rotate, so that the precise determination of the magnification position is realized, 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-magnification 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-, the zooming handwheel 21 drives the rheostatic curve cylinder 23 to rotate around the center thereof relative to the outer cylinder 1, the rheostatic spiral groove 231 on the rheostatic curve cylinder 23 drives the rheostatic guide nail 92 and the sleeve ring 91 to move up and down along the strip-shaped guide hole 111 of the guide cylinder 11, the shift lever of the sliding resistor is driven to slide, and the magnification of the zooming handwheel 21 is converted into a variable resistance signal of the sliding resistor.

Referring to fig. 1 to 4, in the magnification feedback lens of the present invention, the sliding resistor is disposed in the signal feedback assembly 9, and the rotating assembly 2 drives the varistor curve cylinder 23 to rotate, and is guided and limited by the strip-shaped guide hole 111 of the guide cylinder 11; by rotating the zooming handwheel 21, the variable resistance curve cylinder 23 is driven to drive the variable resistance guide nail 92 to slide along the strip-shaped guide hole 111 in the vertical direction, the variable resistance guide nail 92 is fixedly connected with a shift lever of the sliding resistor, so that the shift lever is pushed to slide, the resistance value of the resistor is changed, the ratio of the input voltage and the output voltage of the sliding resistor module is read through a circuit, and the current position of the lens multiplying power is determined by reading the ratio and converting the value into the multiplying power through operation.

The multiplying power feedback lens is a variable resistance type, the precision of the multiplying power feedback lens can reach 1 degree (the design precision of the existing reflection type multiplying power feedback lens reaches 15 degrees), and the multiplying power feedback lens has the advantages of electromagnetic interference resistance and high precision.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.