Mini free space optical rotator

Abstract

The utility model belongs to the field of polarizers, and particularly relates to a mini-type free space polarizers, which comprises a support, a shell is fixedly connected inside the support, a polarization knob is adhered inside the shell, an optical rotation sheet fixing sleeve is connected inside the polarization knob through threads, an optical rotation sheet is adhered inside the optical rotation sheet fixing sleeve, and the optical rotation sheet fixing sleeve is connected with the polarization knob through threads. And the outer side of the optical rotation sheet fixing sleeve is rotationally connected with a magnetic ring. According to the utility model, by selecting the optical rotation sheet with a lower saturation magnetic field, the size of the magnetic ring can be effectively reduced, so that the size of an assembly shell is reduced, the structural design is simplified, the installation difficulty is reduced, and industrial and automatic production is convenient to realize.

Description

TECHNICAL FIELD

[0001] The utility model relates to polarimeter technical field, concretely is a mini free space polarimeter. BACKGROUND

[0002] The utility model discloses a polarimeter, including: polarizer, the both ends of polarizer are first light end and second light end respectively, the bottom surface of polarizer is a plane, at least two recesses are arranged in the polarizer, and the recess is separated through the intermediate body, half wave plate is arranged in the recess of polarizer, and the included angle between the optical axis of half wave plate and polarizer vertical section or polarizer cross section is 22.5 DEG, and faraday rotator is arranged in the second light end of polarizer, through above -mentioned mode, the utility model discloses the magnetic field is formed through the setting of recess, and the half wave plate, faraday rotator is combined into independent polarimeter unit, and each recess can realize independent polarimetric function, and does not affect each other, and simultaneously as a whole, reduces the step of assembly, and good stability, high reliability.

[0003] But the device in use, the volume of the polarizer installed in the device is big, resulting in the overall volume of the device is big. UTILITY MODEL CONTENTS

[0004] The utility model discloses a mini free space polarimeter, solve the volume of the polarizer installed in the device is big, resulting in the overall volume of the device is big.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a mini free space polarimeter, including support, the inside fixed connection of support has the shell, the inside bonding of shell has the polarization knob, the inside of polarization knob is connected with the polarizer fixed sleeve through screw thread, the inside bonding of polarizer fixed sleeve has the polarizer, the outside rotation connection of polarizer fixed sleeve has the magnetic ring.

[0006] Preferably, the magnetic ring and the polarization knob are in contact, and the magnetic ring and the shell are fixedly connected. The magnetic ring is arranged to change the direction of the light beam.

[0007] Preferably, one end of the polarizer fixed sleeve is in contact with the shell, and the other end of the polarizer fixed sleeve is in contact with the shell. The polarizer fixed sleeve is arranged to support the polarizer.

[0008] Preferably, the inside of the support is provided with a reserved space. The reserved space is arranged to facilitate installation in the optical path system.

[0009] Preferably, the upper end of the support is provided with a chamfer. The chamfer is arranged to reduce the weight of the support.

[0010] Preferably, the housing, the polarizing knob and the optical rotation piece fixing sleeve are internally provided with light transmission holes.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] The utility model discloses through selecting the optical rotation piece of lower saturation magnetic field, can effectively reduce the volume of magnetic ring, thereby reduces the size of assembly housing, simplifies the structure design, reduces the installation difficulty, and it is convenient for the industrialization and automation production to realize. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure perspective drawing of the utility model;

[0014] Figure 2 It is the utility model Figure 1 The sectional view of;

[0015] Figure 3 It is the rear view of the utility model Figure 1 ;

[0016] Figure 4 It is the utility model Figure 1 The parts explosion drawing of;

[0017] In the drawing: 1, support;2, housing;3, magnetic ring;4, optical rotation piece;5, optical rotation piece fixing sleeve;6, polarizing knob. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0019] Please refer to Figures 1-4A mini free space polarizer, including support 1, the inside of support 1 is provided with a reserved space, through the setting of reserved space, in order to install in optical path system, the upper end of support 1 is provided with chamfer, through the setting of chamfer, reduce the weight of support 1, the inside of support 1 is fixedly connected with shell 2, the inside of shell 2 is bonded with polarization knob 6, the inside of polarization knob 6 is connected with rotatory polarizer fixed sleeve 5 by screw thread, one end of rotatory polarizer fixed sleeve 5 and shell 2 contact, the other end of rotatory polarizer fixed sleeve 5 and shell 2 contact, through the setting of rotatory polarizer fixed sleeve 5, rotatory polarizer 4 is supported, the inside of rotatory polarizer fixed sleeve 5 is bonded with rotatory polarizer 4, the outside of rotatory polarizer fixed sleeve 5 is rotatably connected with magnetic ring 3, magnetic ring 3 and polarization knob 6 contact, magnetic ring 3 and shell 2 are fixedly connected, through the setting of magnetic ring 3, for changing the direction of light beam, the inside of shell 2, polarization knob 6 and rotatory polarizer fixed sleeve 5 are all provided with light transmission hole, through the setting of light transmission hole, light beam can pass through.

[0020] The specific implementation process of the utility model is as follows: magnetic ring 3 provides a magnetic field, rotatory polarizer 4 is located in the magnetic field, when light beam passes, can make light beam polarization angle rotate 45 ° under the magnetic rotation effect, by selecting rotatory polarizer 4 with lower saturation magnetic field, can effectively reduce the volume of magnetic ring 3, thereby reducing the size of assembly shell 2, simplifying structure design, reducing installation difficulty, facilitating industrialization and automation production.

[0021] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mini free-space polarizer comprising a support (1), characterized in that: The inside of the support (1) is fixedly connected with an outer shell (2), the inside of the outer shell (2) is bonded with a polarization knob (6), the inside of the polarization knob (6) is threadedly connected with a polaroid fixing sleeve (5), the inside of the polaroid fixing sleeve (5) is bonded with a polaroid (4), and the outside of the polaroid fixing sleeve (5) is rotatably connected with a magnetic ring (3).

2. A mini free-space polarizer according to claim 1, characterized in that: The magnetic ring (3) and the polarization knob (6) are in contact, and the magnetic ring (3) is fixedly connected with the outer shell (2).

3. A mini free-space polarizer according to claim 1, characterized in that: One end of the polaroid fixing sleeve (5) is in contact with the outer shell (2), and the other end of the polaroid fixing sleeve (5) is in contact with the outer shell (2).

4. A mini free-space polarizer according to claim 1, characterized in that: The inside of the support (1) is provided with a reserved space.

5. A mini free-space polarizer according to claim 1, wherein: The upper end of the support (1) is provided with a chamfer.

6. A mini free-space polarizer according to claim 1, characterized in that: The inside of the outer shell (2), the polarization knob (6) and the polaroid fixing sleeve (5) are all provided with light transmission holes.

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