CN211149020U - Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function - Google Patents
Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function Download PDFInfo
- Publication number
- CN211149020U CN211149020U CN201920356581.0U CN201920356581U CN211149020U CN 211149020 U CN211149020 U CN 211149020U CN 201920356581 U CN201920356581 U CN 201920356581U CN 211149020 U CN211149020 U CN 211149020U
- Authority
- CN
- China
- Prior art keywords
- mounting plate
- slit sheet
- filtering function
- mounting
- slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The utility model discloses an electric precision adjustable slit device capable of realizing multi-bandwidth filtering function, which comprises a first mounting plate, an upper slit sheet and a lower slit sheet which are arranged on the front surface of the first mounting plate, a first driving mechanism which is arranged on the front surface of the first mounting plate and is used for driving the upper slit sheet to slide up and down on the first mounting plate, a second mounting plate and a second driving mechanism which is arranged on the second mounting plate and is used for driving the first mounting plate to slide up and down on the second mounting plate; the upper slit sheet and the lower slit sheet are obliquely arranged on the first mounting plate, the back surfaces of the upper slit sheet and the lower slit sheet are both provided with a reflecting layer, and the back surfaces of the upper slit sheet and the lower slit sheet are not parallel to each other. The utility model discloses an upper slit piece and lower slit piece that the slope set up reflect incident light to the device both sides, can not only realize control, the collection of positive emergent light, can also realize control, the collection of both sides reverberation to can realize that the multichannel gathers the formation of image simultaneously.
Description
Technical Field
The utility model relates to the field of optical machinery, in particular to can realize electronic accurate adjustable slit device of many bandwidth filtering function.
Background
The slit device mainly plays a role in spatial filtering, the size and the position of the slit must be accurately controlled to strictly control the bandwidth and the position of the spatial filtering, most slit devices are manually adjusted at present, and the slit device has four problems: firstly, the adjustment precision is low, secondly, the width of the slit is difficult to determine, and thirdly, the central position of the slit is determined; the existing electric slit adjusting device is poor in adjusting precision and large in size, and is difficult to apply to instruments needing precise slit adjustment and control, and fourth, the existing slit device can only realize single-bandwidth filtering, so that the application range of slits is greatly limited, and particularly in a spectrum instrument, a conventional slit mechanism can only realize single-bandwidth (spectrum frequency band) imaging, namely single-channel imaging, so that the imaging frequency band range of the instrument is greatly limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide an electronic accurate adjustable slit device that can realize multi-bandwidth filtering function.
In order to solve the technical problem, the utility model discloses a technical scheme is: an electric precision adjustable slit device capable of realizing a multi-bandwidth filtering function comprises a first mounting plate, an upper slit sheet and a lower slit sheet which are arranged on the front surface of the first mounting plate, a first driving mechanism and a second mounting plate which are arranged on the front surface of the first mounting plate and used for driving the upper slit sheet to slide up and down on the first mounting plate, and a second driving mechanism which is arranged on the second mounting plate and used for driving the first mounting plate to slide up and down on the second mounting plate;
the upper slit sheet and the lower slit sheet are obliquely arranged on the first mounting plate, the back surfaces of the upper slit sheet and the lower slit sheet are respectively provided with a reflecting layer, and the back surfaces of the upper slit sheet and the lower slit sheet are not parallel to each other;
all seted up the leaded light through-hole on first mounting panel and the second mounting panel.
Preferably, the positive both sides of first mounting panel are provided with two first guide rails along vertical direction, slidable is provided with first top shoe and first slider down on the first guide rail, it sets up to go up the slit piece on the first top shoe, the slit piece sets up down on the first slider down.
Preferably, the first driving mechanism comprises a first motor fixedly connected to the first mounting plate, a first lead screw in driving connection with an output shaft of the first motor, a first lead screw sleeve in threaded fit with the first lead screw, a first mounting disc fixedly connected to the first lead screw sleeve, and a first connecting plate fixedly connected to the first mounting disc.
Preferably, the first lower sliding block is provided with a lower sliding block connecting block, and the lower sliding block connecting block is connected with the first connecting plate; a first inclined mounting surface for mounting the lower slit sheet is arranged on the lower sliding block connecting block;
and a first photoelectric switch and a second photoelectric switch are also arranged on two sides of the first lower sliding block.
Preferably, the first connecting plate includes a circular plate portion connected to the first mounting plate and a rectangular block portion vertically provided on the circular plate portion to be connected to the lower block connecting block.
Preferably, an upper sliding block connecting block is arranged on the first upper sliding block, and a second inclined mounting surface for mounting the upper slit sheet is arranged on the upper sliding block connecting block;
and a first long baffle and a first short baffle which are matched with the first photoelectric switch and the second photoelectric switch respectively are also arranged on two sides of the upper sliding block connecting block.
Preferably, the first inclined mounting surface is perpendicular to the horizontal plane, and an included angle between the first inclined mounting surface and the front surface of the first mounting plate is a lower slit sheet inclination angle; the second inclined installation surface is vertical to the horizontal plane, an included angle between the second inclined installation surface and the front surface of the first installation plate is an upper slit sheet inclined angle, and the upper slit sheet inclined angle is different from the lower slit sheet inclined angle in size.
Preferably, the back both sides of first mounting panel are provided with two second guide rails along vertical direction, but slidable is provided with the second slider on the second guide rail, the front of second mounting panel with the second slider is connected.
Preferably, the second driving mechanism comprises a second motor fixedly connected to the back of the second mounting plate, a second screw rod in driving connection with an output shaft of the second motor, a second screw rod sleeve in threaded fit with the second screw rod, a second mounting plate fixedly connected to the second screw rod sleeve, and a second connecting plate fixedly connected to the second mounting plate and the first mounting plate at one end of the second mounting plate and at the other end of the second mounting plate.
Preferably, a third photoelectric switch and a fourth photoelectric switch are further arranged on two sides of the back surface of the second mounting plate; still be connected with the baffle connecting block on the second mounting disc, the both sides of baffle connecting block are connected with be used for respectively with third photoelectric switch and fourth photoelectric switch complex second long baffle and the short baffle of second.
The utility model has the advantages that: the electric precision adjustable slit device capable of realizing the multi-bandwidth filtering function drives the upper slit sheet to slide up and down through the first driving mechanism, thereby controlling the size of a gap between the upper slit sheet and the lower slit sheet, namely changing the width of the slit; the second driving mechanism drives the whole movable mounting plate, the upper slit sheet, the lower slit sheet and the first driving mechanism on the whole movable mounting plate to slide up and down integrally, so that the position of a slit is controlled; finally, the size and the position of the slit can be accurately and mechanically adjusted;
the utility model discloses an upper slit piece and lower slit piece that the slope set up reflect incident light to device both sides, can not only realize the control, the collection of positive emergent light, can also realize the control, the collection of both sides reverberation to can realize that the multichannel gathers the formation of image simultaneously, i.e. the multi-bandwidth filtering forms images; in addition, a plurality of devices are combined, so that more channels can be acquired and imaged, the application range of the slit component can be greatly expanded, and the functions and the application of related instruments can be expanded.
Drawings
Fig. 1 is a schematic structural diagram of a front side of an electric precision adjustable slit device capable of realizing a multi-bandwidth filtering function according to the present invention;
fig. 2 is a schematic structural diagram of a side surface of the electric precision adjustable slit device capable of realizing a multi-bandwidth filtering function of the present invention;
fig. 3 is a schematic structural view of the back side of the electric precision adjustable slit device capable of realizing multi-bandwidth filtering according to the present invention;
fig. 4 is a schematic diagram of an optical path of an electric precision adjustable slit apparatus capable of realizing a multi-bandwidth filtering function according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of the first mounting plate of the present invention;
fig. 6 is an exploded view of the lower slider connecting block, the lower slit piece and the first connecting plate of the present invention;
fig. 7 is a schematic structural view of the first inclined mounting surface and the second inclined mounting surface of the present invention.
Description of reference numerals:
1-a first mounting plate; 2-upper slit sheet; 3-lower slit sheet; 4-a first drive mechanism; 5-a second driving mechanism; 6-a second mounting plate; 7-light guide through holes; 8-lower slit piece inclination angle; 9-inclination angle of upper slit sheet; 10-a first guide rail; 11-a first upper slide; 12-a first lower slide; 13-lower sliding block connecting block; 14-a first opto-electronic switch; 15-a second opto-electronic switch; 16-upper slide block connecting block; 17 — a second guide rail; 18-a second slide; 40-a first motor; 41-a first screw rod; 42-a first screw sleeve; 43 — a first mounting plate; 44 — a first connecting plate; 50-a second motor; 51-a second lead screw; 52-second screw sleeve; 53-second mounting plate; 54 — a second connecting plate; 55-baffle connecting block; 56-second long baffle; 57-second short baffle; 60-third photoelectric switch; 61-fourth opto-electronic switch; 130 — a first angled mounting surface; 160-a second angled mounting surface; 161-a first long baffle; 162 — a first short baffle; 440 — a disc portion; 441-rectangular block portion.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 7, the electric precision adjustable slit device capable of achieving multiple bandwidth filtering function of this embodiment includes a first mounting plate 1, an upper slit sheet 2 and a lower slit sheet 3 disposed on the front surface of the first mounting plate 1, a first driving mechanism 4 disposed on the front surface of the first mounting plate 1 and used for driving the upper slit sheet 2 to slide up and down on the first mounting plate 1, a second mounting plate 6, and a second driving mechanism 5 disposed on the second mounting plate 6 and used for driving the first mounting plate 1 to slide up and down on the second mounting plate 6;
the upper slit sheet 2 is driven by the first driving mechanism 4 to slide up and down, so that the size of a gap between the upper slit sheet 2 and the lower slit sheet 3 is controlled, namely the width of the gap is changed; the second driving mechanism 5 drives the first mounting plate 1 and the upper slit sheet 2, the lower slit sheet 3 and the first driving mechanism 4 thereon to integrally slide up and down, thereby controlling the position of the slit.
The upper slit sheet 2 and the lower slit sheet 3 are obliquely arranged on the first mounting plate 1, the back surfaces thereof are provided with reflection layers, and the back surfaces of the upper slit sheet 2 and the lower slit sheet 3 are not parallel to each other. Namely, the back surfaces of the upper slit sheet 2 and the lower slit sheet 3 are staggered with each other in the vertical direction, and the included angles between the two and the front surface of the first mounting plate 1 are different from each other. For example, in one embodiment, the upper slit sheet 2 is inclined at an angle of 30 °, and the lower slit sheet 3 is inclined at an angle of-30 °. The back surfaces of the upper slit sheet 2 and the lower slit sheet 3 may be polished and coated to form a reflective layer. Referring to fig. 1 and 4, incident light is irradiated from the back side to the back sides of the upper slit sheet 2 and the lower slit sheet 3 through the second mounting plate 6 and the first mounting plate 1 via the light guide through-hole 7, and a part of the light passes through a slit between the upper slit sheet 2 and the lower slit sheet 3 and exits (exits) from the front side; the other part of light is reflected to the two sides of the device by the reflecting layer and is emitted (reflected light 1 and reflected light 2), and the light in the three directions can be controlled and collected. For example, by controlling the inclination angles of the upper slit sheet 2 and the lower slit sheet 3, the direction of the light in the back surface mode can be controlled; the width and the position of the slit are adjusted, the brand bandwidth and the frequency band center position of the emergent light on the front side can be controlled, so that the light in three directions can be respectively controlled and collected, and multi-channel simultaneous collection imaging can be realized. If the same slit device is arranged in the emergent direction of emergent light (or reflected light 1 and reflected light 2), the acquisition imaging of more channels can be realized, the application range of the slit component can be greatly expanded, and the functions and the application of related instruments can be expanded.
In one embodiment, two first guide rails 10 are disposed on two sides of the front surface of the first mounting plate 1 along the vertical direction, a first upper slide block 11 and a first lower slide block 12 are slidably disposed on the first guide rails 10, the upper slit sheet 2 is disposed on the first upper slide block 11, and the lower slit sheet 3 is disposed on the first lower slide block 12.
The first driving mechanism 4 includes a first motor 40 fixed on the first mounting plate 1, a first lead screw 41 in driving connection with an output shaft of the first motor 40, a first lead screw sleeve 42 in threaded fit with the first lead screw 41, a first mounting plate 43 fixed on the first lead screw sleeve 42, and a first connecting plate 44 fixed on the first mounting plate 43.
The first lower sliding block 12 is provided with a lower sliding block connecting block 13, and the lower sliding block connecting block 13 is connected with the first connecting plate 44; the lower sliding block connecting block 13 is provided with a first inclined mounting surface 130 for mounting the lower slit piece 3; a first photoelectric switch 14 and a second photoelectric switch 15 are further disposed on both sides of the first lower slider 12.
Referring to fig. 6, the first connecting plate 44 includes a circular disk portion 440 connected to the first mounting plate 43, and a rectangular block portion 441 vertically provided on the circular disk portion 440 and connected to the lower block connecting block 13.
The first upper slider 11 is provided with an upper slider connecting block 16, and the upper slider connecting block 16 is provided with a second inclined mounting surface 160 for mounting the upper slit piece 2; and a first long baffle 161 and a first short baffle 162 which are respectively matched with the first photoelectric switch 14 and the second photoelectric switch 15 are also arranged on two sides of the upper sliding block connecting block 16.
Among them, it is further preferable that the first, second, third, and fourth photoelectric switches 61 are all groove-type photoelectric switches; the first motor 40 and the second motor 50 are both precision stepping motors; the first guide rail 10 and the second guide rail 17 are precision guide rails.
The working principle is as follows: the first motor 40 drives the first screw rod 41 to rotate, the first screw rod sleeve 42 is in threaded fit with the first screw rod 41, so that the first screw rod sleeve 42 slides up and down, the upper slit piece 2 is driven by the first connecting plate 44 to slide up and down on the first guide rail 10, and the size of a gap between the upper slit piece 2 and the lower slit piece 3 is adjusted; meanwhile, the first long baffle 161 and the first short baffle 162 move up and down to be inserted into or separated from the slots of the first photoelectric switch 14 and the second photoelectric switch 15, so that the lower limit position and the upper limit position of the upper slit sheet 2 are positioned. For example, when the first short baffle 162 is inserted into the slot of the second photoelectric switch 15, it is the lower limit position of the upper slit sheet 2; when the first long blocking plate 161 is drawn out from the slot of the first photoelectric switch 14, it is the upper limit position of the upper slit sheet 2.
Referring to fig. 1 and 7, the first inclined mounting surface 130 is perpendicular to the horizontal plane, and an included angle between the first inclined mounting surface 130 and the front surface of the first mounting plate 1 is a lower slit sheet inclination angle 8; the second inclined mounting surface 160 is perpendicular to the horizontal plane, an included angle between the second inclined mounting surface 160 and the front surface of the first mounting plate 1 is an upper slit sheet inclination angle 9, and the upper slit sheet inclination angle 9 is different from the lower slit sheet inclination angle 8 in size. The arrangement of the inclination angles of the lower slit sheet 3 and the upper slit sheet 2 is realized by the arrangement of the inclination angles of the first inclined mounting surface 130 and the second inclined mounting surface 160, that is, the inclination angle of the first inclined mounting surface 130 is the inclination angle of the lower slit sheet 3, and the inclination angle of the second inclined mounting surface 160 is the inclination angle of the upper slit sheet 2.
In one embodiment, referring to fig. 2, two second guide rails 17 are vertically disposed on two sides of the back surface of the first mounting plate 1, a second sliding block 18 is slidably disposed on the second guide rails 17, and the front surface of the second mounting plate 6 is connected to the second sliding block 18. The second driving mechanism 5 includes a second motor 50 fixedly connected to the back of the second mounting plate 6, a second lead screw 51 in driving connection with the output shaft of the second motor 50, a second lead screw sleeve 52 in threaded fit with the second lead screw 51, a second mounting plate 53 fixedly connected to the second lead screw sleeve 52, and a second connecting plate 54 having one end fixedly connected to the second mounting plate 53 and the other end fixedly connected to the first mounting plate 1.
Wherein, a third photoelectric switch 60 and a fourth photoelectric switch 61 are arranged on two sides of the back surface of the second mounting plate 6; the second mounting plate 53 is further connected with a baffle connecting block 55, and both sides of the baffle connecting block 55 are connected with a second long baffle 56 and a second short baffle 57 which are respectively matched with a third photoelectric switch 60 and a fourth photoelectric switch 61.
The working principle of the second driving mechanism 5 is the same as that of the first driving mechanism 4, and the description thereof is omitted. The third photoelectric switch 60 is matched with the second long baffle 56 to realize the upper limit position positioning of the slit position, and the fourth photoelectric switch 61 is matched with the second short baffle 57 to realize the lower limit position positioning of the slit position.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. An electric precision adjustable slit device capable of realizing a multi-bandwidth filtering function is characterized by comprising a first mounting plate, an upper slit sheet and a lower slit sheet which are arranged on the front surface of the first mounting plate, a first driving mechanism, a second mounting plate and a second driving mechanism, wherein the first driving mechanism and the lower slit sheet are arranged on the front surface of the first mounting plate and are used for driving the upper slit sheet to slide up and down on the first mounting plate, and the second driving mechanism is arranged on the second mounting plate and is used for driving the first mounting plate to slide up and down on the second mounting plate;
the upper slit sheet and the lower slit sheet are obliquely arranged on the first mounting plate, the back surfaces of the upper slit sheet and the lower slit sheet are respectively provided with a reflecting layer, and the back surfaces of the upper slit sheet and the lower slit sheet are not parallel to each other;
all seted up the leaded light through-hole on first mounting panel and the second mounting panel.
2. The electric precision adjustable slit device capable of realizing multi-bandwidth filtering function according to claim 1, wherein two first guide rails are vertically arranged on two sides of the front surface of the first mounting plate, a first upper slide block and a first lower slide block are slidably arranged on the first guide rails, the upper slit sheet is arranged on the first upper slide block, and the lower slit sheet is arranged on the first lower slide block.
3. The electric precision adjustable slit device capable of achieving multi-bandwidth filtering function according to claim 2, wherein the first driving mechanism comprises a first motor fixedly connected to the first mounting plate, a first lead screw in driving connection with an output shaft of the first motor, a first lead screw sleeve in threaded fit with the first lead screw, a first mounting plate fixedly connected to the first lead screw sleeve, and a first connecting plate fixedly connected to the first mounting plate.
4. The electric precision adjustable slit device capable of realizing multi-bandwidth filtering function according to claim 3, wherein the first lower slider is provided with a lower slider connecting block, and the lower slider connecting block is connected with the first connecting plate; a first inclined mounting surface for mounting the lower slit sheet is arranged on the lower sliding block connecting block;
and a first photoelectric switch and a second photoelectric switch are also arranged on two sides of the first lower sliding block.
5. The electric precision adjustable slit apparatus capable of realizing multi-bandwidth filtering function according to claim 4, wherein the first connecting plate comprises a circular disk portion connected with the first mounting plate and a rectangular block portion vertically disposed on the circular disk portion for connecting with the lower sliding block connecting block.
6. The electric precision adjustable slit device capable of realizing multi-bandwidth filtering function according to claim 4, wherein an upper slider connecting block is arranged on the first upper slider, and a second inclined mounting surface for mounting the upper slit sheet is arranged on the upper slider connecting block;
and a first long baffle and a first short baffle which are matched with the first photoelectric switch and the second photoelectric switch respectively are also arranged on two sides of the upper sliding block connecting block.
7. The electric precision adjustable slit device capable of realizing the multi-bandwidth filtering function according to claim 6, wherein the first inclined installation surface is perpendicular to a horizontal plane, and an included angle between the first inclined installation surface and the front surface of the first installation plate is a lower slit sheet inclination angle; the second inclined installation surface is vertical to the horizontal plane, an included angle between the second inclined installation surface and the front surface of the first installation plate is an upper slit sheet inclined angle, and the upper slit sheet inclined angle is different from the lower slit sheet inclined angle in size.
8. The electric precision adjustable slit device capable of realizing multi-bandwidth filtering function according to claim 1, wherein two second guide rails are vertically arranged on two sides of the back surface of the first mounting plate, a second sliding block is slidably arranged on the second guide rails, and the front surface of the second mounting plate is connected with the second sliding block.
9. The electric precision adjustable slit device capable of achieving multi-bandwidth filtering function according to claim 8, wherein the second driving mechanism includes a second motor fixedly connected to a back surface of the second mounting plate, a second lead screw drivingly connected to an output shaft of the second motor, a second lead screw sleeve threadedly engaged with the second lead screw, a second mounting plate fixedly connected to the second lead screw sleeve, and a second connecting plate having one end fixedly connected to the second mounting plate and the other end fixedly connected to the first mounting plate.
10. The electric precision adjustable slit device capable of realizing multi-bandwidth filtering function according to claim 9, wherein a third photoelectric switch and a fourth photoelectric switch are further disposed on two sides of the back surface of the second mounting plate; still be connected with the baffle connecting block on the second mounting disc, the both sides of baffle connecting block are connected with be used for respectively with third photoelectric switch and fourth photoelectric switch complex second long baffle and the short baffle of second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356581.0U CN211149020U (en) | 2019-03-20 | 2019-03-20 | Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356581.0U CN211149020U (en) | 2019-03-20 | 2019-03-20 | Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211149020U true CN211149020U (en) | 2020-07-31 |
Family
ID=71758351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920356581.0U Active CN211149020U (en) | 2019-03-20 | 2019-03-20 | Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211149020U (en) |
-
2019
- 2019-03-20 CN CN201920356581.0U patent/CN211149020U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69226380T2 (en) | Optical spectral analyzer with a double monochromator | |
| US10162089B2 (en) | Light amount adjustment device and optical device | |
| US5066088A (en) | Optical variable delay line and variable-frequency fiber-optic multiplexer | |
| DE2410485B2 (en) | PRISM SYSTEM FOR COLOR SEPARATION INTO THREE COLOR COMPONENTS | |
| DE2337015A1 (en) | DEVICE FOR OPTICAL SCANNING OF A ROTATING IMAGE PLATE | |
| CA1086116A (en) | Zoom lens | |
| CN211149020U (en) | Electric precision adjustable slit device capable of realizing multi-bandwidth filtering function | |
| CN109975938A (en) | The electric precision adjustable slit device of more bandwidth filter functions can be achieved | |
| DE3328821A1 (en) | Autofocus for microscopes | |
| EP0942305A1 (en) | Lens control system for a camera | |
| JPS60354A (en) | Positioning device and manufacture thereof | |
| DE69729907T2 (en) | Detection apparatus for rotational displacement information | |
| CN107131954A (en) | A kind of variable resolution bandwidth of grating spectrograph is realized and debugging system and method | |
| CN101334590B (en) | Charting device | |
| DE3917725A1 (en) | OPTICAL SCANNER | |
| CN113747024A (en) | Camera module and electronic equipment | |
| DE1259621B (en) | Photoelectric measuring generator | |
| DE2121379A1 (en) | Audiovisual playback device and a dedicated image / sound record | |
| DE4132025A1 (en) | LIGHT BEAM DEFLECTOR | |
| CN214840611U (en) | Professional stage lighting automatic focusing system | |
| AT394111B (en) | INCREMENTAL MEASURING SYSTEM | |
| CN205665440U (en) | ROSA of mechanically adjusting structure | |
| CN208886635U (en) | A kind of stage lighting light beam cutting mechanism | |
| US20240061156A1 (en) | Lens module with finely-adjustable aperture and electronic device | |
| CN217034972U (en) | Optical instrument teaching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |