CN220626746U

CN220626746U - Adjustable polarizer structure

Info

Publication number: CN220626746U
Application number: CN202322282990.XU
Authority: CN
Inventors: 张楚鹏; 周凌波; 薛中曦; 李晓春
Original assignee: Changsha Lubang Photoelectric Technology Co ltd
Current assignee: Changsha Lubang Photoelectric Technology Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-19
Anticipated expiration: 2033-08-24

Abstract

An adjustable polarizer structure comprises a shell, a polaroid, a rotating piece and a mounting ring; the shell is in a circular tube shape, and a first polaroid is fixed in the inner cavity of the shell; the rotating piece is annular and is rotatably sleeved outside the shell; the shell is provided with a first annular groove which is communicated with the inner cavity of the shell; the rotary part is provided with a second annular groove, the positions of the first annular groove and the second annular groove correspond to each other after the rotary part is installed, so that the mounting ring can sequentially penetrate through the second annular groove and then extend into the shell, and a second polaroid is fixed on the mounting ring; the rotating member can drive the mounting ring and the second polarizer to synchronously rotate when rotating. According to the adjustable polarizer structure, the second polaroid is movably arranged in the shell through the rotating piece and the mounting ring, so that the adjustment is more convenient, and the polarization adjustment precision is high; and the stability of long-term use is good, and the adjusting process is difficult to shake.

Description

Adjustable polarizer structure

Technical Field

The utility model relates to the technical field of optical instruments and equipment, in particular to an adjustable polarizer structure.

Background

A polarizer is an optical element for selecting, filtering or adjusting polarized light in a specific direction, and the basic principle of the polarizer is to realize selective transmission or absorption of polarized light by controlling the vibration direction of an electric field vector in a light wave. In short, a polarizer may transmit a component of a light wave in a particular polarization direction, while absorbing or scattering components in other directions. Polarizers are widely used in many fields, in which they can reduce reflection and enhance color saturation, achieving better photographic results; polarizers are used to control the optical path, observe and analyze the optical properties of materials in microscopes and optical instruments; in optical communication and display technology, adjustable polarizers can be used to adjust the polarization state of optical signals, enabling high speed data transmission and clearer image display.

In the prior art, some adjustable polarizers mainly include a housing and two polarized lenses, wherein one polarized lens is directly fixed on the housing, the other polarized lens is first fixed on a mounting ring, and the mounting ring is mounted on the housing by two tip set screws. By adopting the structure, because the two tip set screws are difficult to align, the adjustment and the use are inconvenient, and after the long-term use, the tip set screws are easy to loosen to cause the shaking of the polaroid, thereby causing adverse effects on the polarization adjustment effect. In view of the foregoing, the present application aims to provide a novel adjustable polarizer structure to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an adjustable polarizer structure which has good stability, is not easy to shake after long-term use and can obtain higher polarization adjustment precision.

The technical scheme of the utility model is as follows: an adjustable polarizer structure comprises a shell, a polaroid, a rotating piece and a mounting ring; the shell is in a circular tube shape, and a first polaroid is fixed in the inner cavity of the shell; the rotating piece is annular and is rotatably sleeved outside the shell; the shell is provided with a first annular groove which is communicated with the inner cavity of the shell; the rotary part is provided with a second annular groove, the positions of the first annular groove and the second annular groove correspond to each other after the rotary part is installed, so that the mounting ring can sequentially penetrate through the second annular groove and then extend into the shell, and a second polaroid is fixed on the mounting ring; the rotating member can drive the mounting ring and the second polarizer to synchronously rotate when rotating.

Further, the mounting ring comprises a ring body and a fixed edge, and the ring body is connected with the fixed edge through a connecting part. Preferably, the connecting portion and the ring body have the same width, and more preferably, the ring body, the fixing edge and the connecting portion are integrally formed.

Furthermore, the outer diameter of the ring body is not larger than the inner diameter of the shell, and the ring body and the shell keep coaxial after being installed, so that the ring body can flexibly rotate in the shell without interference with the shell.

Furthermore, the fixed edge is arc-shaped and is matched with the second annular groove, so that after the rotary piece is installed, the fixed edge can perfectly fill the second annular groove on the rotary piece, and the appearance of the rotary piece is smoother, flatter and more attractive.

Furthermore, the second polaroid is fixed with the ring body through the connecting glue, so that the gluing operation is convenient, and the installation time is saved.

Further, the width of the first ring groove is the same as the thickness of the ring body and the connecting part, so that the mounting ring can be limited to rotate at the position where the first ring groove is located, and preferably, the angle of the first ring groove is not less than 180 degrees; this ensures that the angle of rotation of the mounting ring is in the range of 0-180 degrees.

Further, the inner diameter of the rotary member is adapted to the outer diameter of the housing, so that the rotary member can rotate about the housing as a central axis.

Further, the opening position of the first ring groove on the shell and the installation position of the first polaroid are staggered.

Further, the outer surface of the housing is provided with annular protrusions for positioning during use of the adjustable polarizer structure. Preferably, a threaded ring can be further arranged on the shell, and the threaded ring can limit and fix the whole adjustable polarizer structure when the adjustable polarizer structure is installed on other products.

Further, the external surface of the rotating piece is provided with insections, and the insections can increase the friction force of the external surface of the rotating piece so as to facilitate the rotation adjustment of the rotating piece.

The utility model has the beneficial effects that: compared with the polarizer structure in which the second polaroid is fixed by two tip set screws in the prior art, the adjustable polarizer structure in the application has the advantages that the second polaroid is movably installed in the shell through the rotating piece and the mounting ring, the adjustment is more convenient, and the polarization adjustment precision is high; and the stability of long-term use is good, and the problem of shaking and the like is difficult to appear in the adjusting process.

Drawings

FIG. 1 is a schematic perspective view of embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of embodiment 1 of the present utility model;

FIG. 3 is an exploded view of example 1 of the present utility model;

FIG. 4 is a schematic view of the housing in embodiment 1 of the present utility model;

FIG. 5 is a schematic view of a rotary member according to embodiment 1 of the present utility model;

FIG. 6 is a schematic view of a mounting ring according to embodiment 1 of the present utility model;

in the figure: 1-shell, 11-first annular groove, 12-annular bulge, 2-rotating piece, 21-second annular groove, 22-screw hole, 3-installation ring, 31-ring body, 32-fixed edge, 33-connecting part, 4-first polaroid, 5-second polaroid and 6-locking screw.

Detailed Description

The present utility model will be described in further detail with reference to specific examples, wherein methods or functional elements not specifically described are prior art.

Example 1

As shown in fig. 1 to 6, the present embodiment is an adjustable polarizer structure including a housing 1, a polarizing plate, a rotating member 2, and a mounting ring 3; the shell 1 is in a circular tube shape, and a first polaroid 4 is adhered in the inner cavity of the shell 1; the rotating piece 2 is in a ring shape, and the rotating piece 2 is rotatably sleeved outside the shell 1; the shell 1 is provided with a first annular groove 11, and the first annular groove 11 is communicated with the inner cavity of the shell 1; the rotary piece 2 is provided with a second annular groove 21, when the rotary piece 2 is installed, the positions of the first annular groove 11 and the second annular groove 21 correspond to each other, so that the mounting ring 3 can sequentially pass through the second annular groove 21 and then extend into the shell 1, and the mounting ring 3 is adhered with the second polaroid 5 through connecting glue; the second polarizer 5 is not fixed with the housing 1, and the mounting ring 3 and the second polarizer 5 can be driven to rotate synchronously when the rotating member 2 rotates. The rotating member 2 is also provided with screw holes 22 for mounting the locking screws 6.

In this embodiment, the mounting ring 3 includes a ring body 31 and a fixing edge 32, and the ring body 31 and the fixing edge 32 are connected by a connecting portion 33. The width of the connecting portion 33 is the same as that of the ring body 31, and the ring body 31, the fixed edge 32 and the connecting portion 33 are produced by an integral molding process. The outer diameter of the ring body 31 is not larger than the inner diameter of the shell 1, and the ring body 31 and the shell 1 keep coaxial after being installed, so that the ring body 31 can flexibly rotate in the shell 1 without interference phenomenon with the shell 1. The fixed edge 32 is arc-shaped and is matched with the second annular groove 21, and after the fixed edge 32 is installed, the second annular groove 21 on the rotating member 2 can be perfectly filled with the fixed edge 32, so that the appearance of the rotating member 2 is smoother, smoother and more attractive.

In this embodiment, the width of the first ring groove 11 is the same as the thicknesses of the ring body 31 and the connecting portion 33, and the connecting portion 33 is limited to move only along the first ring groove 11 when in use, so that the ring body 31 and the second polarizer 5 are also limited to rotate in a plane without shaking to both sides. And the angle of the first annular groove 11 is not smaller than 180 degrees, so that the rotation angle of the mounting ring 3 is ensured to be in the range of 0-180 degrees. This is because the connecting portion 33 itself occupies a certain space when moving in the first ring groove 11, and thus the angular range of rotation thereof is slightly smaller than that of the first ring groove 11.

In the present embodiment, the inner diameter of the rotator 2 is adapted to the outer diameter of the housing 1, so that the rotator 2 can rotate about the housing 1 as a central axis. The opening position of the first annular groove 11 on the shell 1 and the installation position of the first polaroid 4 are staggered, an annular bulge 12 is arranged on the outer surface of the shell 1, and the annular bulge 12 is used for positioning in the use process of the adjustable polarizer structure.

In other embodiments, the outer surface of the rotating member 2 is provided with corrugations, which increase the friction of the outer surface of the rotating member 2 to facilitate rotational adjustment of the rotating member 2. In other embodiments, a threaded ring may be further disposed on the housing 1, where the threaded ring may limit and fix the entire adjustable polarizer structure when the adjustable polarizer structure is mounted on other products.

The use method of the adjustable polarizer structure in this embodiment is that when the rotating member 2 is rotated to a proper position, the locking screw 6 on the rotating member 2 is used to lock the rotating member 2 and the housing 1, so that the current polarization state is maintained.

The above is only a part of embodiments of the present utility model, and it is not intended to limit the present utility model, and it is obvious to those skilled in the art that the present utility model can be combined and modified in various technical features, and it is intended to include the present utility model in the scope of the present utility model without departing from the spirit and scope of the present utility model.

Claims

1. An adjustable polarizer structure, characterized by: comprises a shell, a polaroid, a rotating piece and a mounting ring;

the shell is in a circular tube shape, and a first polaroid is fixed in the inner cavity of the shell; the rotating piece is annular and is rotatably sleeved outside the shell; the shell is provided with a first annular groove which is communicated with the inner cavity of the shell; the rotary part is provided with a second annular groove, the first annular groove corresponds to the second annular groove in position after the rotary part is installed, the mounting ring sequentially penetrates through the second annular groove and then stretches into the shell, and a second polaroid is fixed on the mounting ring; the rotating member drives the mounting ring and the second polarizer to rotate synchronously when rotating.

2. The tunable polarizer structure of claim 1, wherein: the mounting ring comprises a ring body and a fixed edge, and the ring body is connected with the fixed edge through a connecting part.

3. The adjustable polarizer construction of claim 2 wherein: the outer diameter of the ring body is not larger than the inner diameter of the shell.

4. The adjustable polarizer construction of claim 2 wherein: the fixed edge is arc-shaped and is matched with the second annular groove.

5. The adjustable polarizer construction of claim 2 wherein: the second polaroid is fixed with the ring body through connecting glue.

6. The adjustable polarizer construction of claim 2 wherein: the width of the first annular groove is the same as the thickness of the connecting part, and the angle of the first annular groove is not smaller than 180 degrees.

7. The tunable polarizer structure of claim 1, wherein: the inner diameter of the rotating member is adapted to the outer diameter of the housing.

8. The tunable polarizer structure of claim 1, wherein: the opening position of the first ring groove on the shell is staggered with the mounting position of the first polaroid.

9. The tunable polarizer structure of claim 1, wherein: the outer surface of the shell is provided with annular protrusions.

10. The tunable polarizer structure of claim 1, wherein: the outer surface of the rotating piece is provided with insections.