CN113741024A - Split type continuous variable density attenuator device and working method thereof - Google Patents
Split type continuous variable density attenuator device and working method thereof Download PDFInfo
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- CN113741024A CN113741024A CN202110916198.8A CN202110916198A CN113741024A CN 113741024 A CN113741024 A CN 113741024A CN 202110916198 A CN202110916198 A CN 202110916198A CN 113741024 A CN113741024 A CN 113741024A
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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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Abstract
The invention provides a split continuous variable density attenuator device and a working method thereof, wherein the device comprises: the device comprises a base frame, a first linear guide rail, a second linear guide rail, an attenuation mirror and mirror frame I, an attenuation mirror and mirror frame II, a first rack, a second rack, an input gear, an output gear and a motor; the first linear guide rail and the second linear guide rail are fixedly connected with the lower part of the basic frame; rectangular attenuation pieces are arranged in the attenuation mirror and mirror frame I and the attenuation mirror and mirror frame II, and the lower ends of the attenuation mirror and mirror frame I and the attenuation mirror and mirror frame II are respectively connected with the linear guide rail I and the linear guide rail II in a sliding manner; the first rack and the second rack are respectively fixedly connected with the upper ends of the attenuation mirror and the first frame and the upper ends of the attenuation mirror and the second frame; the axis of the input gear is fixedly connected with the rotating shaft of the motor and is meshed with the upper end tooth surface of the output gear; the lower end tooth surface of the output gear is respectively meshed with the first rack and the second rack. The invention does not introduce extra rotational inertia in the attenuation process and has the advantages of high reliability, low cost, integration degree and the like.
Description
Technical Field
The invention relates to the technical field of optical engineering, in particular to a split 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 split 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 device has the advantages of high reliability, low cost, integration degree and the like.
The invention provides a split continuous variable density attenuator device, comprising: the linear guide rail is arranged on the base frame;
the linear guide rail comprises a first linear guide rail and a second linear guide rail which are parallel, and the first linear guide rail and the second linear guide rail are fixedly connected with the lower part of the basic frame; the attenuator and the picture frame comprise an attenuator and a picture frame I and an attenuator and a picture frame II, rectangular attenuation sheets are arranged in the attenuator and the picture frame I and the attenuator and the picture frame II, and the lower ends of the attenuator and the picture frame I and the attenuator and the picture frame II are respectively connected with a linear guide rail I and a linear guide rail II in a sliding manner; the rack comprises a first rack and a second rack, and the first rack and the second rack are respectively fixedly connected with the upper ends of the attenuating mirror and the first frame and the upper ends of the attenuating mirror and the second frame; the gear set comprises an input gear and an output gear; the axis of the input gear is fixedly connected with a rotating shaft of the motor and is meshed with the upper end tooth surface of the output gear; the lower end tooth surface of the output gear is respectively meshed with the first rack and the second rack; the motor is fixed on the basic frame.
Further, the split continuous variable density attenuator device also comprises a motor support; the motor is fixedly connected with the upper part of the basic frame through a motor support.
Further, the gear set also comprises a plurality of idle gears arranged between the input gear and the output gear; the idler gear is used for realizing transmission between the input gear and the output gear.
Further, the gear set is mounted on the upper portion of the base frame.
Preferably, there are 2 idlers.
The invention also provides a working method of the split continuous variable density attenuator device, which comprises the following steps:
controlling the motor to rotate;
the rotating shaft of the motor drives the input gear to rotate;
the input gear drives the output gear to rotate;
the output gear drives the rack I and the rack II to move in opposite directions, and correspondingly, the attenuation mirror and the mirror frame I and the attenuation mirror and the mirror frame II also move in opposite directions, so that the relative twisting of two rectangular attenuation sheets in the attenuation mirror and the mirror frame I and the attenuation mirror and the mirror frame II is realized.
Furthermore, when an idle gear is arranged between the input gear and the output gear, the input gear drives the output gear to rotate through the idle gear.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the split continuous variable density attenuator device can realize the relative twisting of two rectangular attenuation sheets on the attenuation mirror and the first lens frame and the attenuation mirror and the second lens frame only by controlling the power output of the motor, thereby realizing the continuous multiplying power attenuation of incident beams, and having quick adjustment process and small occupied space; and all components in the split continuous variable density attenuator device do not have large-inertia rotating parts, and the rectangular attenuation sheet is simple in manufacturing process, so that the image quality of the transmitted light beam can be effectively ensured, no extra rotational inertia is introduced in the attenuation process, and the split continuous variable density attenuator device has the advantages of high reliability, low cost, integration degree and the like.
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 front perspective view of a split type continuous variable density attenuator apparatus according to the present invention.
FIG. 2 is a perspective view of the rear side of the double-split type continuous variable density attenuator apparatus according to the present invention.
Reference numerals: 10-basic frame, 21-linear guide rail I, 22-linear guide rail II, 30-attenuation mirror and mirror frame, 31-attenuation mirror and mirror frame I, 32-attenuation mirror and mirror frame II, 40-rack, 41-rack I, 42-rack II, 50-gear set, 51-input gear, 52-output gear, 53-idle gear, 60-motor and 61-motor support.
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 and 2, the present embodiment proposes a split type continuous variable density attenuator device, comprising: a base frame 10, a linear guide rail, an attenuating mirror and mirror frame 30, a rack 40, a gear set 50 and a motor 60;
the linear guide rails comprise a first linear guide rail 21 and a second linear guide rail 22 which are parallel, and the first linear guide rail 21 and the second linear guide rail 22 are fixedly connected with the lower part of the base frame 10; the attenuating mirror and mirror frame 30 comprises an attenuating mirror and mirror frame I31 and an attenuating mirror and mirror frame II 32, rectangular attenuating sheets are arranged in the attenuating mirror and mirror frame I31 and the attenuating mirror and mirror frame II 32, and the lower ends of the attenuating mirror and mirror frame I31 and the attenuating mirror and mirror frame II 32 are respectively connected with the linear guide rail I21 and the linear guide rail II 22 in a sliding manner; the rack 40 comprises a first rack 41 and a second rack 42, and the first rack 41 and the second rack 42 are respectively fixedly connected with the upper ends of the first attenuator and mirror frame 31 and the second attenuator and mirror frame 32; the gear set 50 includes an input gear 51 and an output gear 52; the axis of the input gear 51 is fixedly connected with the rotating shaft of the motor 60 and is meshed with the upper end tooth surface of the output gear 52; the lower end tooth surface of the output gear 52 is respectively meshed with the first rack 41 and the second rack 42; the motor 60 is fixed to the base frame 10.
As shown in fig. 1 and 2, the split continuous variable density attenuator device further comprises a motor support 61; the motor 60 is fixedly connected to an upper portion of the base frame 10 (the upper portion of the base frame 10 is omitted in fig. 1 and 2) through a motor support 61.
Since the input gear 51 and the output gear 52 may not be directly meshed due to the position relationship, in the present embodiment, the gear set 50 further includes a plurality of idle gears 53 disposed between the input gear 51 and the output gear 52; the idler gear 53 is used for realizing transmission between the input gear 51 and the output gear 52. The number of the idle wheels 53 is set according to actual needs, and as shown in fig. 1 and 2, the number of the idle wheels 53 in the present embodiment is 2.
The gear set 50 is mounted on the upper portion of the base frame 10, i.e., the shafts of the input gear 51, the output gear 52, and the idle gear 53 are fixed on the upper portion of the base frame 10.
The working method of the split continuous variable density attenuator device is as follows:
controlling the motor 60 to rotate;
the rotating shaft of the motor 60 drives the input gear 51 to rotate;
the input gear 51 drives the output gear 52 to rotate; when an idle gear 53 is arranged between the input gear 51 and the output gear 52, the input gear 51 drives the output gear 52 to rotate through the idle gear 53;
the output gear 52 drives the first rack 41 and the second rack 42 to move in opposite directions, and accordingly, the first attenuator and mirror frame 31 and the second attenuator and mirror frame 32 also move in opposite directions, so that the two rectangular attenuators in the first attenuator and mirror frame 31 and the second attenuator and mirror frame 32 can be twisted relatively. As shown in fig. 1 and 2, in the split continuous variable density attenuator, the first attenuator and first frame 31 and the second attenuator and second frame 32 are respectively close to two ends of the base frame 10, when the control motor 60 rotates, the first attenuator and first frame 31 and the second attenuator and second frame 32 move in opposite directions, that is, the first attenuator and first frame 31 and the second attenuator and second frame 32 both move toward the middle of the base frame 10, so that the two rectangular attenuators in the first attenuator and first frame 31 and the second attenuator and second frame 32 twist relatively, and at this time, the incident light beam passes through the two rectangular attenuators to realize continuous magnification attenuation. When the split continuous variable density attenuator finishes working, the attenuator and the first frame 31 and the attenuator and the second frame 32 can be reset only by controlling the motor 60 to rotate reversely and then by the transmission of the gear set 50 and the rack 40.
Therefore, the split continuous variable density attenuator device can realize the relative twisting of two rectangular attenuation sheets on the first attenuator and the first frame 31 and the second attenuator and the second frame 32 only by controlling the power output of the motor 60, thereby realizing the continuous multiplying power attenuation of incident beams, and having quick adjustment process and small occupied space; and all components in the split continuous variable density attenuator device do not have large-inertia rotating parts, and the rectangular attenuation sheet is simple in manufacturing process, so that the image quality of the transmitted light beam can be effectively ensured, no extra rotational inertia is introduced in the attenuation process, and the split continuous variable density attenuator device has the advantages of high reliability, low cost, integration degree and the like.
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.
Claims (7)
1. A split continuous variable density attenuator device, comprising: the device comprises a basic frame (10), a linear guide rail, an attenuating mirror and a mirror frame (30), a rack (40), a gear set (50) and a motor (60);
the linear guide rails comprise a first linear guide rail (21) and a second linear guide rail (22) which are parallel, and the first linear guide rail (21) and the second linear guide rail (22) are fixedly connected with the lower part of the base frame (10); the attenuating mirror and mirror frame (30) comprises an attenuating mirror and mirror frame I (31) and an attenuating mirror and mirror frame II (32), rectangular attenuating sheets are arranged in the attenuating mirror and mirror frame I (31) and the attenuating mirror and mirror frame II (32), and the lower ends of the attenuating mirror and mirror frame I (31) and the attenuating mirror and mirror frame II (32) are connected with a linear guide rail I (21) and a linear guide rail II (22) in a sliding manner respectively; the rack (40) comprises a first rack (41) and a second rack (42), and the first rack (41) and the second rack (42) are respectively fixedly connected with the upper ends of the first attenuator and the second attenuator frame (31) and the second attenuator frame (32); the gear set (50) comprises an input gear (51) and an output gear (52); the axis of the input gear (51) is fixedly connected with the rotating shaft of the motor (60) and is meshed with the upper end tooth surface of the output gear (52); the lower end tooth surface of the output gear (52) is respectively meshed with the first rack (41) and the second rack (42); the motor (60) is fixed on the base frame (10).
2. The split continuous variable density attenuator device according to claim 1, further comprising a motor mount (61); the motor (60) is fixedly connected with the upper part of the basic frame (10) through a motor support (61).
3. The split continuous variable density attenuator device according to claim 1, wherein the gear set (50) further includes a plurality of idler gears (53) disposed between the input gear (51) and the output gear (52); the idle gear (53) is used for realizing transmission between the input gear (51) and the output gear (52).
4. The split continuous variable density attenuator apparatus according to claim 3, wherein the gear set (50) is mounted to an upper portion of the base frame (10).
5. The split continuous variable density attenuator device according to claim 3, wherein there are 2 idler pulleys (53).
6. A method of operating the split continuous variable density attenuator apparatus according to any one of claims 1 to 5, including:
controlling the motor (60) to rotate;
the rotating shaft of the motor (60) drives the input gear (51) to rotate;
the input gear (51) drives the output gear (52) to rotate;
the output gear (52) drives the first rack (41) and the second rack (42) to move in opposite directions, and correspondingly, the first attenuator and the first frame (31) and the second attenuator and the second frame (32) also move in opposite directions, so that the two rectangular attenuators in the first attenuator and the first frame (31) and the second attenuator and the second frame (32) can be twisted relatively.
7. The split continuous variable density attenuator apparatus as claimed in claim 6, wherein when there is an idler gear (53) between the input gear (51) and the output gear (52), the input gear (51) rotates the output gear (52) via the idler gear (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110916198.8A CN113741024B (en) | 2021-08-11 | 2021-08-11 | Split type continuous variable density attenuator device and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110916198.8A CN113741024B (en) | 2021-08-11 | 2021-08-11 | Split type continuous variable density attenuator device and working method thereof |
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| CN113741024A true CN113741024A (en) | 2021-12-03 |
| CN113741024B CN113741024B (en) | 2023-03-28 |
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