Refractable multistage wave plate

Abstract

The utility model discloses a refractable multistage wave plate, and belongs to the technical field of wave plate related products. A refractable multistage wave plate comprises a fixing base, a pin shaft is arranged at the top of the fixing base, the other end of the pin shaft is connected with a rotating sleeve, a rubber ring is arranged on the inner wall of the rotating sleeve, first movable plates are arranged in a plurality of cavities, and connecting cylinders are arranged on the front outer wall and the rear outer wall of the fixing base. The optical system is more flexible and easy to maintain and is more suitable for the optical system and the experimental environment where the wave plate needs to be frequently replaced or adjusted, and in the process of replacing the wave plate with the specific thickness, only the used screw needs to be replaced with the appropriate length, and the screw can be replaced conveniently. By means of the structure, the pressing plate can be driven by pressing of the screws again to clamp and fix the wave plates of various thicknesses, the overall using flexibility of the wave plate clamping device is improved, and when the wave plates are not used, the dust cover can be used for preventing external dust from being attached to the wave plates to affect follow-up using of the wave plates.

Description

Technical Field

[0001] The utility model relates to the technical field of wave plate related products, and more specifically to a refractable multi-level wave plate. Background Art

[0002] A wave plate is an optical device that can produce an additional optical path difference (or phase difference) between two mutually perpendicular light vibrations. It is usually made of birefringent wafers such as quartz, calcite or mica with precise thickness, and its optical axis is parallel to the wafer surface. Wave plates are divided into multi-order wave plates, cemented zero-order wave plates or composite wave plates, and true zero-order wave plates according to their structure.

[0003] A refractable multi-level wave plate is a wave plate that uses different refractive indices of media to achieve phase delay and interference effects on incident light waves through a multi-level structure. This wave plate can be used for applications such as modulating the polarization state of light and controlling the phase of light.

[0004] The existing refractable multi-stage wave plates still have the following problems: the existing refractable multi-stage wave plates often have multiple wave plates installed inside, but once a wave plate inside is damaged or needs to be replaced during use, the entire wave plate assembly needs to be replaced, which is extremely inconvenient to use and brings great trouble to the subsequent debugging and use;

[0005] Secondly, when installing existing wave plates, since the actual thickness of wave plates is mostly different, most of them use different limit rings with a large number of screws to clamp and fix wave plates of different thicknesses. This requires the use of limit rings of various sizes, which undoubtedly causes many inconveniences in use. In addition, when the wave plate is not in use, external dust often adheres to the surface of the wave plate, which brings great inconvenience to use.

[0006] In view of this, we propose a refractable multi-order wave plate. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The utility model aims to provide a refractable multi-stage wave plate to solve the problems of cumbersome replacement of specific wave plates, inconvenient installation of wave plates of various thicknesses and poor dustproof effect proposed in the above background technology.

[0009] 2. Technical solution

[0010] A refractable multi-stage wave plate comprises a fixed seat, a pin is arranged on the top of the fixed seat, a rotating sleeve is connected to the other end of the pin, a rubber ring is arranged on the inner wall of the rotating sleeve, a cavity is arranged inside the rotating sleeve, a plurality of movable grooves are arranged on the inner walls of the cavities, a plurality of movable plates are arranged inside the cavities, a plurality of threaded holes are arranged on the rear outer walls of the rotating sleeves, a plurality of screws are threadedly connected inside the threaded holes, and connecting tubes are arranged on the front and rear outer walls of the fixed seat.

[0011] Preferably, a groove is provided on the inner wall of the circular arc of the fixing seat, a connecting plate is further provided on the side wall of the fixing seat, and a threaded hole 1 is provided on the top of the connecting plate.

[0012] Preferably, a plurality of dust covers are threadedly sleeved on the inner walls of the connecting tubes, and a rotating handle is provided on the outer wall of the dust cover.

[0013] Preferably, a plurality of the rotating sleeve side walls are provided with support plates, and a threaded rod matching the threaded hole is sleeved on the top of the support plate.

[0014] Preferably, a plurality of the movable plates 1 are provided with a pressing groove on their front outer walls, the pressing groove matches with the screw, and the plurality of the movable plates 1 respectively match with the cavity.

[0015] Preferably, a plurality of springs are arranged at the bottom of the inner cavity of the movable plate 1, and a movable plate 2 is arranged on the top of the plurality of springs.

[0016] Preferably, a pressure plate is disposed on the second outer wall of the movable plate, a rubber pad is disposed on the side wall of the pressure plate, the pressure plate matches the through movable groove, and a wave plate is tightly pressed between the rubber pad and the rubber ring.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the utility model has the advantages that when a specific wave plate needs to be replaced, it is only necessary to rotate and loosen the threaded rod on the side of the rotating sleeve carrying the specific wave plate, and then use the pin to rotate the rotating sleeve so that the rear of the rotating sleeve can be exposed, and then use a screwdriver to rotate and loosen multiple screws. At this time, the loosening of multiple screws can release the pressure of the pressure plate on the wave plate, and then press the multiple movable plates 2, and use the spring to drive the movable plates 2 to press down and retract, and then the designated wave plate can be replaced, allowing the user to replace or adjust the specific wave plate when needed, making the optical system more flexible and easy to maintain, more suitable for optical systems and experimental environments that require frequent replacement or adjustment of wave plates, and worthy of popularization and use;

[0019] Secondly, when replacing a wave plate of a specific thickness, you only need to replace the screws used with ones of appropriate length, so that the pressure of the screws can be used again to drive the pressure plate to clamp and fix wave plates of various thicknesses, thereby improving its overall flexibility of use. When the wave plate is not in use, you only need to rotate the dust cover thread into the inside of the connecting tube to prevent external dust from sticking to the wave plate and affecting its subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the fixing seat structure of the utility model;

[0022] Figure 3 This is a rear view structural diagram of the rotary sleeve of the utility model;

[0023] Figure 4 This is a structural schematic diagram of a movable plate of the utility model;

[0024] Explanation of the numbers in the figure: 100, fixed seat; 110, connecting plate; 111, threaded hole 1; 120, pin; 130, slot body; 200, rotating sleeve; 210, rubber ring; 220, through-moving slot; 230, threaded hole 2; 240, screw; 250, movable plate 1; 251, spring; 252, movable plate 2; 253, pressure plate; 254, rubber pad; 260, wave plate; 270, support plate; 280, threaded rod; 300, connecting tube; 310, dust cover; 320, rotating handle. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] A refractable multi-level wave plate includes a fixed seat 100, a pin 120 is arranged on the top of the fixed seat 100, a rotating sleeve 200 is connected to the other end of the pin 120, a rubber ring 210 is arranged on the inner wall of the rotating sleeve 200, a cavity is arranged inside the rotating sleeve 200, and a plurality of moving grooves 220 are arranged on the inner wall of the cavity to facilitate the movement of the pressing plate 253;

[0030] A movable plate 1 250 is disposed inside the plurality of cavities, a threaded hole 230 is opened on the rear outer wall of the plurality of rotating sleeves 200, and a screw 240 is threadedly connected inside the plurality of threaded holes 230;

[0031] In some embodiments, when replacing wave plates 260 of various thicknesses, it is necessary to replace the screws 240 with the required lengths according to the thickness of the wave plates 260 for pressing, so as to avoid the rotating sleeve 200 being unable to rotate and close due to the screws being too long.

[0032] The front and rear outer walls of the fixing seat 100 are provided with connecting tubes 300, so as to facilitate threaded connection between the connecting tubes 300 at both ends and the equipment in later use.

[0033] Specifically, a groove body 130 is provided on the arc inner wall of the fixing seat 100, and a connecting plate 110 is further provided on the side wall of the fixing seat 100. A threaded hole 111 is provided on the top of the connecting plate 110 to facilitate the placement and positioning of the rotating sleeve 200.

[0034] Furthermore, a dust cover 310 is threadedly sleeved on the inner wall of the plurality of connecting tubes 300 , and a rotating handle 320 is provided on the outer wall of the dust cover 310 , so as to provide dust protection for the wave plate 260 when it is not in use, thereby avoiding subsequent use.

[0035] Furthermore, a plurality of side walls of the rotating sleeves 200 are provided with support plates 270 , and a threaded rod 280 matching the threaded hole 111 is sleeved on the top of the support plate 270 , so as to facilitate the positioning of the rotating sleeves 270 .

[0036] Furthermore, a pressing groove is provided on the front outer wall of the plurality of movable plates 250, and the pressing groove matches with the screw 240, and the plurality of movable plates 250 respectively matches with the cavity.

[0037] In some embodiments, the width of the cavity is the same as the width of the movable plate 250, and the length of the cavity is shorter than the movable plate 250, so as to avoid the movable plate 250 from being offset during the pressing process.

[0038] It is worth noting that a spring 251 is arranged at the bottom of the inner cavity of the plurality of movable plates 1 250 , and a movable plate 252 is arranged on the top of the plurality of springs 251 .

[0039] It is worth noting that a pressure plate 253 is provided on the outer wall of the movable plate 252, and a rubber pad 254 is provided on the side wall of the pressure plate 253. The pressure plate 253 matches the movable groove 220, and a wave plate 260 is tightly pressed between the rubber pad 254 and the rubber ring 210, so as to facilitate the clamping and fixing of wave plates 260 of various thicknesses.

[0040] Working principle: When a specific wave plate 260 needs to be replaced, it is only necessary to rotate and loosen the threaded rod 280 on the side of the rotating sleeve 200 carrying the specific wave plate 260, and then use the pin 120 to rotate the rotating sleeve 200 so that the rear of the rotating sleeve 200 can be exposed, and then use a screwdriver to rotate and loosen the multiple screws 240. At this time, the loosening of the multiple screws 240 can release the pressure of the pressure plate 253 on the wave plate 260, and then press the multiple movable plates 252, and use the spring 251 to drive the movable plates 252 to press down and retract, and then the specified wave plate 260 can be replaced, allowing the user to replace or adjust the specific The fixed wave plate 260 makes the optical system more flexible and easy to maintain, and is more suitable for optical systems and experimental environments that need to frequently replace or adjust the wave plate 260, and is worthy of popularization. Secondly, in the process of replacing the wave plate 260 of a specific thickness, it is only necessary to replace the used screw 240 with a suitable length, so that the pressure of the screw 240 can be used again to drive the pressure plate 253 to clamp and fix the wave plates 260 of various thicknesses, thereby improving its overall flexibility of use. When the wave plate 260 is not in use, it is only necessary to screw the dust cover 310 into the interior of the connecting tube 300 to prevent external dust from adhering to the wave plate 260 and affecting its subsequent use.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A refractable multi-level wave plate, comprising a fixing seat (100), characterized in that: A pin shaft (120) is arranged at the top of the fixing seat (100), and the other end of the pin shaft (120) is connected to a rotating sleeve (200), and a rubber ring (210) is arranged on the inner wall of the rotating sleeve (200), and a cavity is arranged inside the rotating sleeve (200), and a plurality of movable grooves (220) are arranged on the inner wall of the cavity, and a plurality of movable plates (250) are arranged inside the cavity, and a plurality of threaded holes (230) are arranged on the rear outer wall of the rotating sleeve (200), and a plurality of screws (240) are threadedly connected inside the threaded holes (230), and a connecting tube (300) is arranged on the front and rear outer walls of the fixing seat (100).

2. A refractable multi-level wave plate according to claim 1, characterized in that: A groove body (130) is provided on the arc inner wall of the fixing seat (100), and a connecting plate (110) is also provided on the side wall of the fixing seat (100). A threaded hole 1 (111) is provided on the top of the connecting plate (110).

3. A refractable multi-level wave plate according to claim 2, characterized in that: The inner walls of the plurality of connecting tubes (300) are threadedly sleeved with dust covers (310), and the outer walls of the dust covers (310) are provided with a rotating handle (320).

4. A refractable multi-level wave plate according to claim 3, characterized in that: A plurality of the rotating sleeves (200) are provided with support plates (270) on their side walls, and a threaded rod (280) matching the threaded hole one (111) is sleeved on the top of the support plate (270).

5. A refractable multi-level wave plate according to claim 4, characterized in that: The front outer walls of the plurality of movable plates (250) are provided with pressing grooves, the pressing grooves match the screws (240), and the plurality of movable plates (250) match the cavities respectively.

6. A refractable multi-level wave plate according to claim 5, characterized in that: A spring (251) is arranged at the bottom of the inner cavity of the plurality of movable plates (250), and a movable plate (252) is arranged on the top of the plurality of springs (251).

7. A refractable multi-level wave plate according to claim 6, characterized in that: The outer wall of the movable plate 2 (252) is provided with a pressure plate (253), the side wall of the pressure plate (253) is provided with a rubber pad (254), the pressure plate (253) matches the through-moving groove (220), and a wave plate (260) is tightly pressed between the rubber pad (254) and the rubber ring (210).

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