CN111190319A - Electrically-controlled adjustable polarization neutral gray level filter - Google Patents
Electrically-controlled adjustable polarization neutral gray level filter Download PDFInfo
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- CN111190319A CN111190319A CN202010133570.3A CN202010133570A CN111190319A CN 111190319 A CN111190319 A CN 111190319A CN 202010133570 A CN202010133570 A CN 202010133570A CN 111190319 A CN111190319 A CN 111190319A
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- hollow
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
- G02B26/023—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light comprising movable attenuating elements, e.g. neutral density filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Blocking Light For Cameras (AREA)
Abstract
The invention discloses a polarization neutral gray filter capable of being electrically controlled and adjusted, which comprises: inside hollow supporting body, its upper end is connected with fixed holding piece, be provided with polaroid I in the fixed holding piece, the supporting body upper end is connected with the protecgulum, the supporting body lower extreme is connected with movable holding piece, be provided with polaroid II in the movable holding piece, the supporting body lower extreme still is connected with the back lid, the middle part of supporting body is provided with the motor fixed bolster, be provided with the motor on the motor fixed bolster, be connected with driving belt through the cylinder in the motor shaft, be provided with the opening on the side of supporting body, driving belt passes opening and movable holding piece interconnect, polaroid I and polaroid II are parallel to each other and its central point is located same vertical epaxially. The polarization neutral gray level filter capable of being electrically controlled and adjusted has the advantages of being simple to operate, wide in application range and capable of adjusting the filtering effect of the filter in real time.
Description
Technical Field
The invention belongs to the technical field of neutral gray level filtering devices, and particularly relates to a polarized neutral gray level filter capable of being adjusted in an electric control mode.
Background
Neutral gray filter, named "middle gray mirror" or ND mirror, is a colorless to gray photographic filter, and is an optical element with light intensity attenuated by means of the light absorbing characteristic of matter. In the field of photography, the main purpose of using gray mirrors is to prevent overexposure, for example in outdoor shots where sunlight is intense or where exposure to normal light is required for a longer period of time.
The neutral gray mirror in an ideal state can attenuate light with all wavelengths to the same degree without causing chromatic aberration, but the traditional single-chip neutral gray mirror can only attenuate light intensity to a single degree, so that the neutral gray mirror used in photography is divided into different specifications according to different light reduction amounts, and then the neutral gray mirrors with different specifications are selected according to requirements. For the application with more specification and variety requirements, such as shooting and shooting under the condition of wide light intensity variation range, the traditional gray lens is lack of flexibility in use, and meanwhile, the shooting cost is increased by equipping with the gray lenses with different specifications. On the basis of the traditional neutral gray lens, an adjustable neutral gray lens is derived, which consists of two gradual change neutral gray lenses, and the adjustment of the light attenuation degree is realized through different combinations of the light attenuation amounts of the two lenses. Another way to achieve adjustable attenuation of the light intensity is to use a combination of two polarizers. The polarizer can convert natural light into linearly polarized light, and the light intensity after the incident light passes through the analyzer (one polarizer) is in direct proportion to the square of the cosine of the included angle between the vibration direction of the linearly polarized light and the transmission axis direction of the analyzer according to Malus law if the incident light is linearly polarized light. Therefore, different degrees of light intensity attenuation are realized by changing the included angle between the linearly polarized light vibration direction and the transmission axis direction of the analyzer. The adjustable gray mirror consists of two parallel polaroids which are respectively called as a polarizer and an analyzer, incident light is changed into linearly polarized light after passing through the polarizer, and then the linearly polarized light passes through the analyzer to realize light intensity attenuation according to the Malus law. Theoretically, the adjustable gray mirror can realize the change of 0% -100% of transmitted light intensity, but the existing adjustable gray mirror adjusting mode is that the polarizer is manually rotated to change the included angle of the polarization directions of the two polaroids, the adjustment cannot be carried out in real time during long-time shooting or videography, and the fine adjustment capability of manual adjustment is poor, so that the application of the adjustable gray mirror is limited.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an electrically adjustable polarization neutral gray filter comprising:
a hollow supporting body, a fixed clamping sheet is fixedly connected in the upper end of the supporting body, a polarizing film I is arranged in the fixed clamping sheet, the outer part of the upper end of the supporting main body with the hollow inside is detachably connected with a front cover with the hollow inside, the lower end of the supporting main body with the hollow inside is rotatably connected with a movable clamping piece, a polaroid II is arranged in the movable clamping piece, the lower end of the supporting main body with hollow interior is detachably connected with a rear cover with hollow interior, a motor fixing bracket is fixedly arranged in the middle of the supporting main body which is hollow inside, a motor is arranged on the motor fixing bracket, the motor rotating shaft is connected with a transmission belt through a roller, the side surface of the supporting main body which is hollow inside is provided with an opening, the transmission belt penetrates through the opening to be connected with the movable clamping piece, the polaroid I and the polaroid II are parallel to each other, and the center points of the polaroids are located on the same vertical shaft.
Preferably, the fixing clip piece includes: the fixed holding piece I of ring shape and the fixed holding piece II of ring shape, the symmetry is provided with the assembly groove on the fixed holding piece I of ring shape, the inside bottom integrated into one piece of the fixed holding piece II of ring shape is provided with the arch that is used for placing polaroid I, the outer wall of the fixed holding piece I of ring shape passes through screw thread interconnect with the inner wall of the fixed holding piece II of ring shape to it is fixed with polaroid I.
Preferably, the fixing connection mode of the supporting body with a hollow inside and the fixing and clamping piece is as follows: the inside of inside hollow support main part upper end is provided with the boss, the fixed holding piece II of circle shape is located the boss, just be provided with the screw hole on the hollow support main part lateral wall in inside of boss top, be provided with the screw in the screw hole, screw one end contacts with the outer wall of the fixed holding piece II of circle shape.
Preferably, the movable clamping piece includes: the clamping piece I is movable to inside hollow "T" type and movable clamping piece II is movable to inside hollow "T" type, the tip of the inside hollow "T" type movable clamping piece I great end is provided with the annular groove that matches each other with polaroid II, polaroid II is located the annular groove, just the outer wall of the inside hollow "T" type movable clamping piece I great end passes through threaded interconnection with the inner wall of the inside hollow "T" type movable clamping piece II great end to it is fixed to polarize polaroid II.
Preferably, the hollow supporting body and the movable clamping piece are rotatably connected in a manner that: the outer wall of the smaller end of the T-shaped movable clamping piece I is in rotatable contact with the inner wall of the supporting body, the outer wall of the smaller end of the T-shaped movable clamping piece II is in rotatable contact with the inner wall of the rear cover, and the larger ends of the T-shaped movable clamping piece I and the T-shaped movable clamping piece II are located between the supporting body and the rear cover.
Preferably, the connection mode of the driving belt and the movable clamping piece is as follows: the transmission belt is in contact connection with the outer wall of the larger end of the T-shaped movable clamping piece II which is hollow inside.
Preferably, the detachable connection mode of the supporting main body with the hollow inside and the front cover with the hollow inside is as follows: the outer wall of the supporting main body with the hollow inside is fixedly connected with the inner wall of the front cover with the hollow inside through threads.
Preferably, the detachable connection mode of the supporting main body with the hollow inside and the rear cover with the hollow inside is as follows: the inner wall of the support main body with the hollow inside is fixedly connected with the outer wall of the rear cover with the hollow inside through threads.
Preferably, the supporting body, the front cover, the rear cover, the fixed clamping piece and the movable clamping piece, which are hollow inside, are all made of light alloy or engineering plastics.
Preferably, one end of the internal hollow rear cover, which is far away from the internal hollow support main body, is provided with a convex ring for being matched with an industrial camera or an optical system, and the outer wall of the convex ring is provided with threads.
The invention at least comprises the following beneficial effects:
the polarized neutral gray filter can realize the remote real-time adjustment of the filtering effect of the neutral gray filter by controlling the on-off of the power supply of the motor; in the photographic application that the light intensity variation range is very wide, avoid being equipped with the neutral grey level optical filter of multiple model, simultaneously, can satisfy the demand of making a video recording to the very big environment of light intensity fluctuation in a period, enlarge the range of application of neutral grey level optical filter.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
FIG. 1 is a schematic view of the apparatus according to the present invention;
FIG. 2 is a cross-sectional view of a device according to the present invention;
FIG. 3 is an exploded view of a portion of the structure provided by the present invention;
FIG. 4 is a schematic view of a support body structure provided by the present invention;
FIG. 5 is a schematic structural view of a fixing and clamping sheet according to the present invention;
FIG. 6 is a schematic view of an exploded structure of a fixed clamping piece according to the present invention;
FIG. 7 is a cross-sectional view of a stationary clamping piece provided in the present invention;
FIG. 8 is a schematic view of a movable clamping piece according to the present invention;
FIG. 9 is a schematic view of an exploded structure of the movable clamping piece according to the present invention;
FIG. 10 is a cross-sectional view of a movable clamping piece provided in the present invention.
The specific implementation mode is as follows:
the present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
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.
An electrically adjustable polarized neutral density gray filter as shown in fig. 1-10, comprising:
the supporting device comprises a supporting body 1 with a hollow interior, wherein the interior of the upper end of the supporting body 1 is fixedly connected with a fixed clamping piece 2, a polaroid I3 is arranged in the fixed clamping piece 2, the exterior of the upper end of the supporting body 1 with the hollow interior is detachably connected with a front cover 11 with the hollow interior, the lower end of the supporting body 1 with the hollow interior is rotatably connected with a movable clamping piece 4, a polaroid II5 is arranged in the movable clamping piece 4, the lower end of the supporting body 1 with the hollow interior is detachably connected with a rear cover 12 with the hollow interior, a motor fixing support 13 is fixedly arranged in the middle of the supporting body 1 with the hollow interior, a motor 6 is arranged on the motor fixing support 13, a motor rotating shaft 61 is connected with a transmission belt 7 through a roller 62, an opening 14 is arranged on the side surface of the supporting body 1 with the hollow interior, the polarizing plate I3 and the polarizing plate II5 were parallel to each other and their center points were located on the same vertical axis.
The working principle is as follows: the polarization neutral gray filter is installed in an industrial camera or an optical system, when light intensity fluctuation is large and the change range is wide and light intensity emphasis is needed in the using process, the operation of the motor 6 can be realized by remotely controlling the on-off of the power supply of the motor 6, so that the motor rotating shaft 61 drives the transmission belt 7 to rotate, the movable clamping piece 4 rotates along with the transmission belt 7, the relative included angle between the polaroid II5 and the polaroid I3 is changed, and the change of the light intensity is realized. During this adjustment, polarizer I3 is fixed in position and acts as a polarizer, changing the normal incident light into linearly polarized light, polarizer II5 acts as an analyzer, and can rotate with motor 6, according to malus law: the incident light is linearly polarized light, and the light intensity and the incident light intensity after the incident light passes through the analyzer, and the vibration direction of the linearly polarized light and the transmission axis direction of the analyzer are clampedThe square of the cosine of the angle is proportional (I ═ I)0·(cosα)2Wherein I represents the transmitted light intensity, I0Indicating the intensity of the incident light, and α indicating the included angle between the polarization direction of the incident light after the incident light is changed into linearly polarized light after passing through the polarizer and the transmission axis direction of the analyzer), the light intensity attenuation can be realized.
In the above technical solution, the fixed clamping piece 2 includes: the fixed holding piece I21 of ring shape and the fixed holding piece II22 of ring shape, the symmetry is provided with assembly groove 201 on the fixed holding piece I21 of ring shape, the inside bottom integrated into one piece of the fixed holding piece II22 of ring shape is provided with the arch 221 that is used for placing polaroid I3, the outer wall of the fixed holding piece I21 of ring shape and the inner wall of the fixed holding piece II22 of ring shape pass through screw thread interconnect to it is fixed with polaroid I3. Adopt this kind of mode, place polaroid I in the arch of the inside bottom of the fixed holding piece II of ring shape, the rotatory fixed holding piece I of ring shape of rethread assembly groove for polaroid I is fixed, fixes through the screw thread, connects closely, and easy to assemble with dismantle, and the assembly groove that the symmetry set up is convenient when the installation, applys the effort, be convenient for install and dismantle to the fixed holding piece I of ring shape.
In the above technical solution, the fixing connection mode of the supporting main body 1 with a hollow inside and the fixing and clamping piece 2 is as follows: the inside of inside hollow support subject 1 upper end is provided with boss 15, the fixed holding piece II22 of ring shape is located boss 15, just be provided with screw hole 16 on the hollow support subject lateral wall in inside above boss 15, be provided with screw 8 in the screw hole, screw 8 one end contacts with the outer wall of the fixed holding piece II22 of ring shape. By adopting the mode, the boss is used for placing the circular ring-shaped fixed clamping piece II, the screw is screwed down after the circular ring-shaped fixed clamping piece II is placed, so that the circular ring-shaped fixed clamping piece II is fixed, and the fixation of the polaroid I is realized.
In the above technical solution, the movable clamping piece 4 includes: a 'T' -shaped movable clamping piece I41 with a hollow interior and a 'T' -shaped movable clamping piece II42 with a hollow interior, wherein the end part of the larger end 411 of the 'T' -shaped movable clamping piece I41 with a hollow interior is provided with an annular groove 401 matched with a polaroid II5, the polaroid II5 is positioned in the annular groove 401, and the outer wall of the larger end 411 of the 'T' -shaped movable clamping piece I41 with the inner wall of the larger end 421 of the 'T' -shaped movable clamping piece II42 with a hollow interior is connected with each other through screw threads and fixes the polaroid II 5. Adopt this kind of mode, the annular groove that the great end of the movable holding piece I of inside hollow "T" type set up matches each other with polaroid II, the height of recess is the same with polaroid II's thickness, the rethread screw thread makes the outer wall of the great end of the movable holding piece I of inside hollow "T" type inseparable with the internal connection of the great end of the movable holding piece II of inside hollow "T" type, thereby it is fixed with polaroid II, connect through the screw thread, it is firm to connect, and easy to assemble and dismantlement.
In the above technical solution, the rotatable connection mode between the supporting body 1 with a hollow interior and the movable clamping piece 4 is as follows: the outer wall of the smaller end 412 of the inner hollow "T" type movable holding piece I41 is in rotatable contact with the inner wall 101 of the inner hollow support body 1, the outer wall of the smaller end 422 of the inner hollow "T" type movable holding piece II42 is in rotatable contact with the inner wall 121 of the inner hollow rear cover 12, and the larger ends of the "T" type movable holding pieces I41 and the "T" type movable holding piece II42 are located between the inner hollow support body 1 and the rear cover 12. Adopt this kind of mode, the movable clamping piece that constitutes by the movable clamping piece of the movable clamping piece I of the movable clamping piece of the "T" type of inside cavity and the movable clamping piece II of the "T" type of inside cavity, support main part and the hollow back lid of inside and mutually support through self great end, make movable clamping piece restricted between support main part and back lid, less end contacts with the inner wall of support main part and the inner wall of back lid each other respectively, make movable clamping piece can only do the horizontally rotation, rotating through the motor, it makes movable clamping piece rotatory to drive the belt.
In the above technical solution, the connection mode between the driving belt 7 and the movable clamping piece 4 is as follows: the driving belt 7 is connected with the outer wall of the larger end 421 of the T-shaped movable holding piece II42 with a hollow inner part in contact. Adopt this kind of mode, utilize driving belt's rotation, drive the movable holding piece II of inside hollow "T" type and rotate to make and be located the inside polaroid II rotation of movable holding piece II, and polaroid I rigidity, the contained angle between polaroid II and the polaroid I changes this moment, thereby plays the effect of adjusting the light intensity, and the light intensity is adjusted.
In the above technical solution, the detachable connection mode between the support body 1 with a hollow interior and the front cover 11 with a hollow interior is as follows: the outer wall of the supporting main body 1 with the hollow inside is fixedly connected with the inner wall of the front cover 11 with the hollow inside through threads. By adopting the mode, the supporting main body and the front cover which are connected in a hollow way are connected with each other through the threads, so that the connection is stable, and the installation and the disassembly are convenient.
In the above technical solution, the detachable connection mode between the support body 1 with a hollow interior and the rear cover 12 with a hollow interior is as follows: the inner wall of the support main body 1 with the hollow inside is fixedly connected with the outer wall of the rear cover 12 with the hollow inside through threads. By adopting the mode, the supporting main body and the rear cover which are connected in a hollow way are connected with each other through the threads, so that the connection is stable, and the installation and the disassembly are convenient.
In the above technical solution, the supporting body 1, the front cover 11, the rear cover 12, the fixed clamping piece 2 and the movable clamping piece 4, which are hollow inside, are all made of light alloy or engineering plastic. In this way, the components of the device are made of light alloy or engineering plastics, and the weight of the device can be reduced.
In the above technical solution, one end of the internal hollow rear cover 12 away from the internal hollow support body 1 is provided with a convex ring 122 for cooperating with an industrial camera or an optical system, and the outer wall of the convex ring 122 is provided with a thread (not shown). By adopting the mode, the convex ring used for being matched with an industrial camera or an optical system is arranged at one end of the rear cover, which is far away from the hollow supporting main body inside, so that the installation of the polarization neutral gray level filter is facilitated, the application range is enlarged, meanwhile, the installation is carried out by adopting threads, the connection is tight, and the looseness is not easy to generate when the optical fiber connector is used.
Example 1:
the polaroid I and the polaroid II are linear polaroids with diameters of 25.4mm and thicknesses of 2.5mm in a visible light wave band, the transmission belt is made of rubber and is not more than 2mm in thickness, and all the components except the motor, the transmission belt and the polaroid are made of light alloy plastics; the fixed clamping piece I is a circular ring with the inner diameter of 23mm, the outer diameter of 27mm and the thickness of 3.5mm, and the outer wall of the fixed clamping piece I is provided with threads; the outer diameter of the bottom of the fixed clamping piece II is 30.4mm, the inner diameter of the fixed clamping piece II is 23mm, the thickness of the fixed clamping piece II is 2mm, the outer diameter of the upper part of the fixed clamping piece II is 30.4mm, the inner diameter of the fixed clamping piece II is 27mm, the height of the fixed clamping piece II is 7.5mm, and threads are arranged; the diameter of the fixing screw is 3mm, the length of the fixing screw is 3mm, the outer diameter of a larger end of a T-shaped movable clamping piece I is 30.4mm, the fixing screw is provided with threads, the inner diameter of the T-shaped movable clamping piece I is 20mm, the height of the T-shaped movable clamping piece I is 4.5mm, the inner diameter of a smaller end of the T-shaped movable clamping piece I is 20mm, the outer diameter of the smaller end of the T-shaped movable clamping piece I is 23mm, the height of the T-shaped movable clamping piece I is 4.5mm, the outer part of the T-shaped movable clamping piece I is smooth, the height of a groove for placing a polaroid is 2mm, the diameter of the groove is 25.4mm, the outer diameter of a larger end of the T-shaped movable clamping piece II is 33.; the outer diameter of the top end of the support main body is 40.4mm, external threads are processed to be connected with the front cover, the inner diameter is 30.4mm, the depth is 9.5mm, and a threaded hole with the diameter of 3mm is formed in the side face and used for placing a fixing screw; the support main body is a hollow cylinder with the length of 20mm downwards, the inner diameter of 23mm and the outer diameter of 40.4mm and is connected with the movable clamping piece, the movable clamping piece can freely rotate along the central shaft without fastening treatment, the inner diameter and the outer diameter of the lower end of the support main body are respectively expanded to 37.4mm and 45.4mm, the length of the support main body is 16mm, 9mm of internal threads are processed to be connected with the rear cover, the angle of the side opening is 120 degrees and used for placing a transmission belt, the transmission belt is connected with the movable clamping piece and a motor, the motor is connected with the main body through a motor fixing support, the motor rotates to drive the movable clamping piece to rotate through the transmission belt, the included angle of the transmission shaft direction; the protecgulum external diameter 45.4mm, internal diameter 25.4mm pass through the screw thread and are connected with supporting body to push down fixed centre gripping piece, play the effect of protection and fastening, back lid external diameter 45.4mm, anterior screw thread and supporting body are connected through, internal diameter 23mm plays the effect of protection and the movable centre gripping piece of restriction.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the electrically adjustable polarized neutral density gray scale filter of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. An electrically controllable tunable polarized neutral density gray filter comprising:
a hollow supporting body, a fixed clamping sheet is fixedly connected in the upper end of the supporting body, a polarizing film I is arranged in the fixed clamping sheet, the outer part of the upper end of the supporting main body with the hollow inside is detachably connected with a front cover with the hollow inside, the lower end of the supporting main body with the hollow inside is rotatably connected with a movable clamping piece, a polaroid II is arranged in the movable clamping piece, the lower end of the supporting main body with hollow interior is detachably connected with a rear cover with hollow interior, a motor fixing bracket is fixedly arranged in the middle of the supporting main body which is hollow inside, a motor is arranged on the motor fixing bracket, the motor rotating shaft is connected with a transmission belt through a roller, the side surface of the supporting main body which is hollow inside is provided with an opening, the transmission belt penetrates through the opening to be connected with the movable clamping piece, the polaroid I and the polaroid II are parallel to each other, and the center points of the polaroids are located on the same vertical shaft.
2. An electrically controllable adjustable polarized neutral density gray filter as claimed in claim 1, wherein said fixed clamp tab comprises: the fixed holding piece I of ring shape and the fixed holding piece II of ring shape, the symmetry is provided with the assembly groove on the fixed holding piece I of ring shape, the inside bottom integrated into one piece of the fixed holding piece II of ring shape is provided with the arch that is used for placing polaroid I, the outer wall of the fixed holding piece I of ring shape passes through screw thread interconnect with the inner wall of the fixed holding piece II of ring shape to it is fixed with polaroid I.
3. An electrically controllable, tunable polarizing neutral gray filter according to claim 2, wherein said supporting body, which is hollow inside, is fixedly connected to the fixing clamp by: the inside of inside hollow support main part upper end is provided with the boss, the fixed holding piece II of circle shape is located the boss, just be provided with the screw hole on the hollow support main part lateral wall in inside of boss top, be provided with the screw in the screw hole, screw one end contacts with the outer wall of the fixed holding piece II of circle shape.
4. An electrically controllable adjustable polarized neutral density gray filter as claimed in claim 1, wherein said movable clamping tab comprises: the clamping piece I is movable to inside hollow "T" type and movable clamping piece II is movable to inside hollow "T" type, the tip of the inside hollow "T" type movable clamping piece I great end is provided with the annular groove that matches each other with polaroid II, polaroid II is located the annular groove, just the outer wall of the inside hollow "T" type movable clamping piece I great end passes through threaded interconnection with the inner wall of the inside hollow "T" type movable clamping piece II great end to it is fixed to polarize polaroid II.
5. An electrically controllable adjustable polarized neutral gray filter according to claim 4, wherein said inner hollow support body is rotatably connected to said movable clamping tab by: the outer wall of the smaller end of the T-shaped movable clamping piece I is in rotatable contact with the inner wall of the supporting body, the outer wall of the smaller end of the T-shaped movable clamping piece II is in rotatable contact with the inner wall of the rear cover, and the larger ends of the T-shaped movable clamping piece I and the T-shaped movable clamping piece II are located between the supporting body and the rear cover.
6. An electrically controllable adjustable polarized neutral density gray filter as claimed in claim 4, wherein said drive belt is connected to said movable clamp by: the transmission belt is in contact connection with the outer wall of the larger end of the T-shaped movable clamping piece II which is hollow inside.
7. An electrically controllable adjustable polarized neutral density gray filter according to claim 5, wherein said hollow interior support body is removably attached to the hollow interior front cover by: the outer wall of the supporting main body with the hollow inside is fixedly connected with the inner wall of the front cover with the hollow inside through threads.
8. An electrically controllable adjustable polarized neutral density gray filter as claimed in claim 1, wherein said hollow interior support body is removably attached to the hollow interior back cover by: the inner wall of the support main body with the hollow inside is fixedly connected with the outer wall of the rear cover with the hollow inside through threads.
9. An electrically controllable tunable polarized neutral gray filter according to claim 1, wherein said internally hollow support body, front cover, back cover, fixed clamping tab and movable clamping tab are all light alloy or engineering plastic.
10. An electrically controllable adjustable polarized neutral gray filter as claimed in claim 1, wherein an end of said inner hollow rear cover remote from said inner hollow support body is provided with a collar for cooperating with an industrial camera or optical system, said collar being provided with a thread on its outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133570.3A CN111190319A (en) | 2020-03-02 | 2020-03-02 | Electrically-controlled adjustable polarization neutral gray level filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133570.3A CN111190319A (en) | 2020-03-02 | 2020-03-02 | Electrically-controlled adjustable polarization neutral gray level filter |
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| Publication Number | Publication Date |
|---|---|
| CN111190319A true CN111190319A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010133570.3A Pending CN111190319A (en) | 2020-03-02 | 2020-03-02 | Electrically-controlled adjustable polarization neutral gray level filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117928399A (en) * | 2024-03-22 | 2024-04-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial thermocouple insulating layer thickness measuring device and method based on polarized light imaging |
-
2020
- 2020-03-02 CN CN202010133570.3A patent/CN111190319A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117928399A (en) * | 2024-03-22 | 2024-04-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial thermocouple insulating layer thickness measuring device and method based on polarized light imaging |
| CN117928399B (en) * | 2024-03-22 | 2024-05-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Coaxial thermocouple insulating layer thickness measuring device and method based on polarized light imaging |
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