Combined adjustable narrow-band filtering device

Abstract

The utility model discloses a combined type adjustable narrow-band light filtering device, a light filtering assembly comprises a clamping piece, the inner ring surface of the clamping piece is provided with a clamping groove, and a light filter is embedded in the clamping groove; the connecting assembly is provided with a through hole corresponding to the inner ring of the clamping piece, and the connecting part is arranged on one end face and / or the side face of the connecting assembly; the first magnetic attraction piece is arranged on the other end face of the connecting assembly and the opposite side face of the clamping piece. Through the first magnetic attraction piece, the plurality of light filtering assemblies are attracted to each other to form a narrow-band light filtering unit with a plurality of light filters coaxial. And the narrow-band filtering unit is connected with the detection device through an adsorbed connecting assembly. According to the device, a plurality of optical filters are used in parallel, the optical filters of different gating wavebands or different types are embedded into the clamping and fixing piece, gating of a certain specific waveband is achieved through the gating function of the optical filters of different waveband ranges, more waveband gating selections can be achieved, and use is more convenient. The whole structure is more compact, and the size is smaller.

Description

Technical Field

[0001] The utility model relates to a filter device, in particular to a combined adjustable narrow-band filter device, belonging to the technical field of filter plates. Background Art

[0002] A filter plate is an optical device that selects a radiation band according to actual needs. Based on the differences in absorption, transmission, and reflection of light with different wavelengths, it realizes the function of selecting specific wavelength ranges of light.

[0003] There are various types of filter plates, and one or more filter plates can be selected according to actual needs to control the wavelength band of the light that can pass through.

[0004] Existing filter plates are generally used alone to achieve the function of selecting a specific wavelength band of light. However, the selected wavelength band of the current filter plates cannot fully meet the requirements of scientific research or daily use, and cannot cover some specific required wavelength ranges.

[0005] Therefore, it is necessary to provide a new combined adjustable narrow-band filter device. Summary of the Invention

[0006] To solve the deficiencies of the existing technology, the purpose of the utility model is to provide a combined adjustable narrow-band filter device.

[0007] To achieve the above objective, the utility model adopts the following technical solutions:

[0008] The combined adjustable narrow-band filter device includes a connection component and a plurality of filter components;

[0009] The filter component includes a fastening member with a clamping groove on the inner ring surface, and the filter plate is embedded in the clamping groove;

[0010] The connection component is provided with a through hole corresponding to the inner ring of the fastening member, and a connecting portion is provided on one end face and / or side face of the connection component;

[0011] A first magnetic attraction member is provided on the other end face of the connection component and the opposite side face of the fastening member;

[0012] Through the first magnetic attraction member, a plurality of filter components are mutually attracted to form a narrow-band filter unit with a plurality of filter plates coaxial; the narrow-band filter unit is connected to the detection device through the adsorbed connection component.

[0013] The above-mentioned fastening member is annular.

[0014] Furthermore, there are a plurality of the above-mentioned first magnetic attraction members, which are arranged at equal intervals along the circumferential direction.

[0015] Furthermore, on the other end face of the connecting component and the single side face of the clamping fixture, the number of the first magnetic components is three.

[0016] Further, the above clamping fixture is composed of a pair of arc-shaped components.

[0017] Furthermore, the above arc-shaped components form a clamping fixture after being adsorbed to each other through the second magnetic components arranged on the end face.

[0018] The number of the above filter components is 2 - 4.

[0019] The above connecting part includes at least one of the first magnetic component and the thread.

[0020] Protective layers are arranged on both sides of the above card slot, and the protective layers include glass plates.

[0021] The beneficial effects of the present utility model are as follows:

[0022] A combined adjustable narrowband filter device of the present utility model uses multiple filter plates in parallel. By respectively embedding different bandpass or different types of filter plates on the clamping fixture, and through the gating effect of the filter plates with different band ranges, the gating of a specific band is realized. More selections of band gating can be achieved, and it is more convenient to use.

[0023] Compared with the component design of a rotary filter plate replacement, its overall structure is more compact, the volume is smaller, and it is more convenient and flexible to use. A wider and more refined gating range can be achieved. Through the open-loop design of the clamping fixture, it is convenient to put in and take out the filter plate, and the closed annular card slot effectively prevents side light from entering and affecting the use of the filter plate. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the clamping fixture.

[0025] Figure 2 It is a connection schematic diagram of the narrowband filter device.

[0026] Figure 3 It is the gating band when two bandpass filters are used in combination.

[0027] Figure 4 It is the gating band when two notch filters are used in combination.

[0028] Figure 5 It is the gating band when two notch filters and one bandpass filter are used in combination.

[0029] The meanings of the marks in the drawings are as follows: 1. Arc-shaped component, 2. Filter plate, 3. Connecting component, 4. Thread, 5. Narrowband filter unit, 6. Protective layer;

[0030] A. First magnetic component, B. Second magnetic component. Detailed implementation manners

[0031] The following specifically introduces the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0032] The combined adjustable narrowband filter device is composed of a connection component 3 and a plurality of filter components.

[0033] The filter component is composed of a clamping member and a filter sheet 2. Preferably, the clamping member is composed of a pair of arc-shaped members 1. Second magnetic members B are respectively arranged on both end faces of the arc-shaped member 1, and the arc-shaped members 1 are adsorbed to each other through the second magnetic members B to form a circular ring. An arc-shaped card slot is arranged on the inner arc surface of the arc-shaped member 1, that is, a circular card slot is arranged on the inner ring surface of the formed clamping member. The filter sheet 2 is embedded in the card slot.

[0034] On both sides of the card slot, protective layers 6 are respectively arranged, that is, the filter sheet 2 is placed between the protective layers 6. The protective layer 6 is preferably a light-transmitting glass plate, which can protect the body of the filter sheet 2, reduce the friction between the filter sheets 2, etc., and maintain the normal use of the filter sheet 2. Further, the glass plate can also be subjected to anti-mildew treatment, such as coating, to prevent mildew from affecting the filter sheet 2.

[0035] The filter sheet 2 can be selected from various types of filter sheets 2 such as a notch filter sheet 2, a band-pass filter sheet 2 or a cut-off filter sheet 2.

[0036] A plurality of first magnetic members A are respectively arranged on both side surfaces of the clamping member. The number of the first magnetic members A is preferably 3 and is equally spaced. Through the 3 first magnetic members A, a plurality of clamping members can be adsorbed to each other in sequence. Preferably, the number of the mutually adsorbed clamping members is 2-4, that is, 2-4 filter components can form a narrowband filter unit 5 after being adsorbed to each other, and all the filter sheets 2 are coaxial. The plurality of filter components used in parallel effectively reduce the volume of the narrowband filter unit 5.

[0037] The first and second magnetic members can be selected as magnets (N pole and S pole) that adsorb each other.

[0038] The cross section of the connection component 3 is in a circular ring shape, corresponding to the circular ring of the clamping member. A first magnetic member A is also arranged on the other end face (outer side end face) of the connection component 3 for correspondingly adsorbing the narrowband filter unit 5 to form the combined adjustable narrowband filter device of the present utility model.

[0039] A connection portion is arranged on the end face of the connection component 3. According to the use requirements, it can be set as the first magnetic member A, that is, it is adsorbed to the detection device by magnetic attraction. Or the connection portion can also be set as a thread 4 on the outer ring surface, and is fixed by screwing. For example, it is fixed to the lens ring or other imaging systems by screwing for the selection range test.

[0040] In use, the same or different types of filters 2 can be combined to achieve different filter gating bands. For example, Figure 3 , 4 , as shown in 5, Figure 3 is the gating band for the combined use of two band-pass filters. Figure 4 is the gating band for the combined use of two notch filters. Figure 5 is the gating band for the combined use of two notch filters and one band-pass filter.

[0041] The gating bands are represented by the shaded areas.

[0042] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present utility model.

Claims

1. A combined adjustable narrowband filter device, characterized in that: It includes a connection component and a plurality of filter components; The filter assembly includes a clamping member having a clamping groove on the inner annular surface, and the filter is embedded in the clamping groove; The connecting component is provided with a through hole corresponding to the inner ring of the clamping member, and the connecting portion is provided on an end face and / or side face of the connecting component; The first magnetic attraction member is disposed on the other end surface of the connecting component and the opposite side surface of the clamping member; Through the first magnetic attraction component, a plurality of filter components are mutually adsorbed to form a narrow-band filter unit with a plurality of filters coaxially connected; the narrow-band filter unit is connected to the detection device through the adsorbed connection component.

2. The optical filter device according to claim 1, characterized in that The clamping member is ring-shaped.

3. The filter device according to claim 2, characterized in that There are a plurality of first magnetic attracting members, which are arranged at equal intervals along the circumferential direction.

4. The optical filter device according to claim 3, characterized in that: On the other end surface of the connecting component and the single side surface of the clamping member, the number of the first magnetic attracting members is 3.

5. The optical filter device according to claim 2, characterized in that: The clamping member is composed of a pair of arc-shaped members.

6. The optical filter device according to claim 5, characterized in that The arc-shaped parts are mutually attracted by the second magnetic attraction parts arranged on the end surfaces to form a clamping part.

7. The optical filter device according to claim 1, characterized in that: The number of the filter components is 2-4.

8. The optical filter device according to claim 1, characterized in that: The connecting portion includes at least one of a first magnetic attraction member and a thread.

9. The optical filter device according to claim 1, characterized in that: A protective layer is provided on both sides of the card slot, and the protective layer comprises a glass plate.

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