阅读说明：本技术 一种共轴反转环型连续变密度衰减器装置及其工作方法 (Coaxial reverse ring type continuous variable density attenuator device and working method thereof ) 是由 王�锋 石岩 邹凯 黄祖鑫 张永红 李源 杨钧兰 尚武云 于 2021-08-11 设计创作，主要内容包括：本发明提供一种共轴反转环型连续变密度衰减器装置及其工作方法,所述装置包括基座、电机、输出齿轮、齿轮盘一、齿轮盘二、衰减片一和衰减片二；衰减片一和衰减片二为圆环形；齿轮盘一和齿轮盘二均具有齿盘和转轴,齿轮盘一还具有贯穿其齿盘和转轴的轴孔；齿轮盘一的转轴穿过基座上的轴孔并可自由转动；齿轮盘二的转轴穿过齿轮盘一的轴孔并可自由转动；齿轮盘一和齿轮盘二的转轴分别与衰减片一和衰减片二固定连接；齿轮盘一和齿轮盘二的齿盘安装在输出齿轮的两侧并使齿盘的齿面与输出齿轮的齿面啮合；输出齿轮的轴心与电机的转轴固定连接；电机固定在基座上。本发明的衰减过程不引入额外转动惯量,并具备高可靠性、低成本、集成化程度等优势。(The invention provides a coaxial reverse rotation annular continuous variable density attenuator device and a working method thereof, wherein the device comprises a base, a motor, an output gear, a first gear disc, a second gear disc, a first attenuation sheet and a second attenuation sheet; the attenuation sheet I and the attenuation sheet II are circular rings; the first gear disc and the second gear disc are both provided with a fluted disc and a rotating shaft, and the first gear disc is also provided with a shaft hole penetrating through the fluted disc and the rotating shaft; a rotating shaft of the first gear plate penetrates through a shaft hole in the base and can rotate freely; a rotating shaft of the gear disc II penetrates through a shaft hole of the gear disc I and can rotate freely; rotating shafts of the first gear disc and the second gear disc are fixedly connected with the first attenuation sheet and the second attenuation sheet respectively; the fluted discs of the first gear disc and the second gear disc are arranged on two sides of the output gear and enable the tooth surfaces of the fluted discs to be meshed with the tooth surfaces of the output gear; the axis of the output gear is fixedly connected with a rotating shaft of the motor; the motor is fixed on the base. The attenuation process of the invention does not introduce extra rotational inertia and has the advantages of high reliability, low cost, integration degree and the like.)

1. A coaxial reverse rotation annular continuous variable density attenuator device is characterized by comprising a base (10), a motor (20), an output gear (30), a first gear disc (41), a second gear disc (42), a first attenuation sheet (51) and a second attenuation sheet (52); the attenuation sheet I (51) and the attenuation sheet II (52) are circular;

the first gear disc (41) and the second gear disc (42) are both provided with a fluted disc and a rotating shaft which are connected, and the first gear disc (41) is also provided with a shaft hole which penetrates through the fluted disc and the rotating shaft; a rotating shaft of the first gear plate (41) penetrates through a shaft hole in the base (10) and can rotate freely; the rotating shaft of the gear disc II (42) penetrates through the shaft hole of the gear disc I (41) and can rotate freely;

the rotating shafts of the first gear disc (41) and the second gear disc (42) on one side of the base (10) are fixedly connected with the first attenuation sheet (51) and the second attenuation sheet (52) respectively; the toothed discs of the first gear disc (41) and the second gear disc (42) on the other side of the base (10) are arranged on two sides of the output gear (30) and enable the tooth surfaces of the toothed discs to be meshed with the tooth surfaces of the output gear (30); the axis of the output gear (30) is fixedly connected with the rotating shaft of the motor (20); the motor (20) is fixed on the base (10).

2. The coaxial counter-rotating ring-type continuously variable density attenuator apparatus as claimed in claim 1, wherein the outer diameter of the rotating shaft of said first gear disk (41) matches the inner diameter of the shaft hole of said base (10); the outer diameter of the rotating shaft of the second gear disc (42) is matched with the inner diameter of the shaft hole of the first gear disc (41).

3. The coaxial counter-rotating ring-type continuously variable density attenuator device of claim 2, wherein the outer diameter of the rotating shaft of the first gear disk (41) is also matched with the inner ring radius of the first attenuator (51).

4. The coaxial inversion ring type continuous variable density attenuator device of claim 1, wherein the outer ring radius of the first attenuation sheet (51) and the second attenuation sheet (52) are equal.

5. The coaxial counter-rotating ring type continuous variable density attenuator device of claim 1, wherein said second gear plate (42) also has a shaft hole through its toothed plate and shaft.

6. The coaxial inversion ring type continuous variable density attenuator device according to claim 1, wherein the base (10) includes a base (11) and a stand (12) standing on the base (11); the shaft hole on the base (10) is arranged on the stand (12).

7. The coaxial inversion ring type continuous variable density attenuator device of claim 1, further comprising a motor mount (21); the motor (20) is fixed on the base (10) through a motor support (21).

8. A method of operating a coaxial inversion ring type continuous variable density attenuator apparatus as claimed in any one of claims 1 to 7, comprising:

controlling the motor (20) to rotate;

the motor (20) drives the output gear (30) to rotate;

the output gear (30) drives the gear disc I (41) and the gear disc II (42) on the two sides to rotate in opposite directions, and correspondingly, the attenuation sheet I (51) and the attenuation sheet II (52) also rotate in opposite directions.

Technical Field

The invention relates to the technical field of optical engineering, in particular to a coaxial reverse ring type continuous variable density attenuator device and a working method thereof.

Background

In recent years, a photoelectric system characterized by laser has been developed vigorously, and various devices, equipment and systems derived from the laser are diversified, so that while the photoelectric detection system related to the laser is rapidly developed, a higher requirement is provided for the adaptability of the photoelectric detection system under the scene of large dynamic range brightness change of a target to be detected. The traditional photoelectric detection light flux adjusting means mainly comprise two modes of aperture and attenuation. The aperture mode attenuation is directly effective, but the resolving power of the imaging unit is sacrificed to some extent. The combined attenuation formed by utilizing a pair of circular variable-density attenuation disks and rotating in a relative reverse rotation mode well solves the problem of continuous variable-density attenuation, and can better meet the detection attenuation requirement of a high-precision ground fixed photoelectric system. The optical attenuator disclosed in patent cn88220078.x proposes a novel optical attenuator composed of a cylindrical shell, a diaphragm, an optical attenuation sheet and a threaded clamping ring for fixing the optical attenuation sheet, and solves the attenuation problem of radiation damage resistance to a great extent. The optical attenuator disclosed in patent CN97203468.4 proposes a novel continuously variable optical attenuator composed of a magneto-optical medium, an optical wedge, a non-magnetic metal sleeve, etc., which solves the problem of continuous attenuation of a non-imaging system to a large extent. The existing attenuation devices fully utilize the characteristics and advantages of core devices used by the attenuation devices, respectively and pertinently solve the problems of low-resolution photographic attenuation, continuous attenuation of a fixed platform, radiation-resistant laser attenuation and the like, and meet the application requirements of respective corresponding scenes.

However, as the demand of the photoelectric system of the movable platform for attenuation of the detection system increases, a continuous attenuation device without rotational inertia for the movable platform is urgently needed to be developed, and the continuous attenuation device has the advantages of high reliability, low cost, integration degree and the like.

Disclosure of Invention

The invention aims to provide a coaxial reverse ring type continuous variable density attenuator device and a working method thereof, so that no additional rotational inertia is introduced in the attenuation process, and the coaxial reverse ring type continuous variable density attenuator device has the advantages of high reliability, low cost, integration degree and the like.

The invention provides a coaxial reverse ring type continuous variable density attenuator device which comprises a base, a motor, an output gear, a first gear disc, a second gear disc, a first attenuation sheet and a second attenuation sheet, wherein the first gear disc is arranged on the base; the attenuation sheet I and the attenuation sheet II are circular rings;

the first gear disc and the second gear disc are both provided with a fluted disc and a rotating shaft which are connected, and the first gear disc is also provided with a shaft hole which penetrates through the fluted disc and the rotating shaft; a rotating shaft of the first gear plate penetrates through a shaft hole in the base and can rotate freely; a rotating shaft of the gear disc II penetrates through a shaft hole of the gear disc I and can rotate freely;

rotating shafts of the first gear disc and the second gear disc on one side of the base are fixedly connected with the first attenuation sheet and the second attenuation sheet respectively; the toothed discs of the first gear disc and the second gear disc on the other side of the base are arranged on two sides of the output gear, and the tooth surfaces of the toothed discs are meshed with the tooth surfaces of the output gear; the axis of the output gear is fixedly connected with a rotating shaft of the motor; the motor is fixed on the base.

Furthermore, the outer diameter of a rotating shaft of the first gear disc is matched with the inner diameter of a shaft hole in the base; and the outer diameter of the rotating shaft of the second gear disc is matched with the inner diameter of the shaft hole of the first gear disc.

Furthermore, the outer diameter of the rotating shaft of the first gear disc is matched with the radius of the inner ring of the first attenuation sheet.

Further, the outer ring radius of the first attenuation sheet is equal to that of the second attenuation sheet.

Furthermore, the second gear plate is also provided with a shaft hole penetrating through the fluted disc and the rotating shaft.

Further, the base comprises a base and a stand standing on the base; the shaft hole on the base is arranged on the vertical frame.

Further, the coaxial reverse rotation ring type continuous variable density attenuator device also comprises a motor support; the motor is fixed on the base through the motor support.

The invention also provides a working method of the coaxial inversion ring type continuous variable density attenuator device, which comprises the following steps:

controlling the motor to rotate;

the motor drives the output gear to rotate;

the output gear drives the first gear disc and the second gear disc on the two sides to rotate in opposite directions, and accordingly the first attenuation sheet and the second attenuation sheet also rotate in opposite directions.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

in the coaxial inversion ring type continuous variable density attenuator device, the ring-shaped attenuation sheet I and the ring-shaped attenuation sheet II can ensure the attenuation uniformity of the light section and the image quality of the transmitted light beam, and the rotational inertia of the ring-shaped attenuation sheet I and the ring-shaped attenuation sheet II is automatically offset in the attenuation process without introducing extra rotational inertia. Meanwhile, the coaxial reverse ring type continuous variable density attenuator has the advantages of high reliability, quick adjustment process, small occupied space, high integration degree, simple manufacturing process of the required ring-shaped attenuation piece and low cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a perspective view of a coaxial inversion ring type continuous variable density attenuator apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of a coaxial inversion ring type continuous variable density attenuator apparatus according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

Icon: 10-base, 11-base, 12-vertical stand, 20-motor, 21-motor support, 30-output gear, 41-first gear disc, 42-second gear disc, 51-first attenuation sheet and 52-second attenuation sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, 2 and 3, the present embodiment provides a coaxial counter-rotating ring type continuous variable density attenuator device, which includes a base 10, a motor 20, an output gear 30, a first gear disk 41, a second gear disk 42, a first attenuation sheet 51 and a second attenuation sheet 52; the first attenuation sheet 51 and the second attenuation sheet 52 are circular;

the first gear disc 41 and the second gear disc 42 are both provided with a fluted disc and a rotating shaft which are connected, and the first gear disc 41 is also provided with a shaft hole which penetrates through the fluted disc and the rotating shaft; the rotating shaft of the first gear plate 41 penetrates through the shaft hole in the base 10 and can rotate freely; the rotating shaft of the second gear disc 42 passes through the shaft hole of the first gear disc 41 and can rotate freely;

the rotating shafts of the first gear disc 41 and the second gear disc 42 on one side of the base 10 are fixedly connected with a first attenuation sheet 51 and a second attenuation sheet 52 respectively; the toothed discs of the first gear disc 41 and the second gear disc 42 on the other side of the base 10 are arranged on two sides of the output gear 30 and enable the tooth surfaces of the toothed discs to be meshed with the tooth surfaces of the output gear 30; the axis of the output gear 30 is fixedly connected with the rotating shaft of the motor 20; the motor 20 is fixed to the base 10. The fact that the toothed discs of the first gear disc 41 and the second gear disc 42 are installed on both sides of the output gear 30 and the toothed surfaces of the toothed discs are engaged with the toothed surfaces of the output gear 30 means that the toothed surfaces of the toothed discs of the first gear disc 41 and the second gear disc 42 are opposite to each other, as shown in fig. 2, the toothed discs of the first gear disc 41 and the second gear disc 42 are located on the right side of the base 10, at this time, the toothed surfaces of the toothed discs of the first gear disc 41 are located on the right side of the toothed disc, the toothed surfaces of the toothed discs of the second gear disc 42 are located on the left side of the toothed disc, and when the toothed discs of the first gear disc 41 and the second gear disc 42 are installed on both sides of the output gear 30, the toothed surfaces of the toothed discs of the first gear disc 41 and the second gear disc 42 can be engaged with the toothed surfaces of the output gear 30.

The working method of the coaxial reverse ring type continuous variable density attenuator device comprises the following steps:

controlling the motor 20 to rotate;

the motor 20 drives the output gear 30 to rotate;

the output gear 30 drives the first gear disk 41 and the second gear disk 42 on the two sides to rotate in opposite directions, and accordingly, the first attenuation sheet 51 and the second attenuation sheet 52 also rotate in opposite directions.

Therefore, in the coaxial inversion ring type continuous variable density attenuator device, the first annular attenuation sheet 51 and the second annular attenuation sheet 52 can ensure the attenuation uniformity of the light section and the image quality of the transmitted light beam, and the rotational inertia of the first annular attenuation sheet 51 and the second annular attenuation sheet 52 is automatically offset in the attenuation process, so that no additional rotational inertia is introduced. Meanwhile, the coaxial reverse ring type continuous variable density attenuator has the advantages of high reliability, quick adjustment process, small occupied space, high integration degree, simple manufacturing process of the required ring-shaped attenuation piece and low cost.

Further, the outer diameter of the rotating shaft of the first gear disc 41 is matched with the inner diameter of the shaft hole in the base 10; the outer diameter of the rotating shaft of the second gear disc 42 is matched with the inner diameter of the shaft hole of the first gear disc 41. Therefore, when the control motor 20 rotates the output gear 30 and drives the first gear disc 41 and the second gear disc 42 to rotate, the first gear disc 41 and the second gear disc 42 do not vibrate transversely. In some embodiments, lubricating oil can be further added to the inner wall of the shaft hole and the outer wall of the rotating shaft of the first gear disc 41 and the outer wall of the rotating shaft of the second gear disc 42 to reduce the rotating friction.

Further, the outer diameter of the rotating shaft of the first gear disc 41 is matched with the inner ring radius of the first attenuation sheet 51. Therefore, the second gear disc 42 can smoothly pass through the shaft hole of the first gear disc 41 and the inner ring of the first attenuation piece 51 and is fixedly connected with the second attenuation piece 52. The outer diameter of the rotating shaft of the second gear disc 42 may be larger than the radius of the inner ring of the second attenuation piece 52, and the rotating shaft of the second gear disc 42 may be fixedly connected with the second attenuation piece 52, and generally, the outer diameter of the rotating shaft of the second gear disc 42 is also matched with the radius of the inner ring of the second attenuation piece 52.

Furthermore, the outer ring radius of the first attenuation sheet 51 is equal to that of the second attenuation sheet 52, so that the effective range of continuous attenuation is increased.

Furthermore, the second gear plate 42 also has a shaft hole penetrating through the gear plate and the rotating shaft. In other words, the first gear plate 41 is also hollow, so that on one hand, the material consumption of the second gear plate 42 can be reduced, the cost is reduced, and on the other hand, the weight of the whole device can be reduced.

Further, the base 10 includes a base 11 and a stand 12 standing on the base 11; the shaft hole of the base 10 is provided in the stand 12. It should be noted that, in the operation of the coaxial inversion ring type continuous variable density attenuator device, it is preferable that the base 10 is fixed to avoid the vibration of the whole device due to the rotation.

Further, the coaxial inversion ring type continuous variable density attenuator device further comprises a motor support 21; the motor 20 is fixed to the base 10 by a motor support 21, and the motor support 21 is generally fixed to the stand 12 of the base 10. As can be seen from fig. 3, since the motor 20 is fixed on the base 10, and the tooth surfaces of the toothed plates of the first gear plate 41 and the second gear plate 42 are engaged with the tooth surface of the output gear 30, the relative positions of the first gear plate 41 and the second gear plate 42 with respect to the output gear 30 are also fixed, and therefore, the first gear plate 41 and the second gear plate 42 do not axially displace during rotation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.