CN203909375U - Device convenient for assembling and adjusting light splitting system - Google Patents

Abstract

The utility model relates to an optical element assembling and adjusting device, in particular to a device convenient for assembling and adjusting a light splitting system, which comprises a base plate and at least three groups of fixed distance tools movably arranged on the base plate; all spectroscopes of the light splitting system are arranged on the distance tool; the distance between two adjacent distance tools defines the distance between the parallel light rays emitted by the light splitting system. The utility model provides a can simplify the spectral system installation and transfer process and can improve work efficiency's the device of spectral system installation and transfer of being convenient for.

Description

A device that facilitates the installation and adjustment of the spectroscopic system

technical field

The utility model belongs to the technical field of optical system adjustment, relates to an optical element installation and adjustment device, in particular to a device for facilitating the installation and adjustment of a light splitting system.

Background technique

In the design of complex optical systems, a beam of light is usually divided into several beams to meet different needs. This part of the optical path is called a beam splitting system. The beam splitting system is very important in the entire optical system. Whether the split beam can meet the design requirements directly affects the quality of the subsequent optical path. Therefore, the design of the mechanical structure of the spectroscopic system should fully consider the operability of assembly to ensure that the assembly and adjustment of the spectroscopic system can meet the requirements of optical design.

As shown in Figure 1, according to the optical design, after a beam of incident light is transmitted and reflected by the spectroscopic mirror of the spectroscopic system (the spectroscopic system is composed of 3 spectroscopic mirrors), it is required that the three outgoing rays after passing through the spectroscopic system are parallel to each other and The propagating direction of the incident light remains unchanged, and the parameter indexes of the angles α, β, γ and the distance between parallel rays a and b in the figure need to be met. In the process of modern optical installation and adjustment, it is easy to achieve the parallel and angle indicators of the light rays through debugging with various optical instruments, but it is very difficult to achieve the parameter indicators of the distance a and b of the parallel light rays at the same time. As shown in Figure 2, since the beamsplitters in the beam splitting system meet the angle requirements, they will be shifted in parallel in the S or N direction, causing the parameters of the distance a and b of the parallel light rays to fail to meet the target, and it is necessary to repeatedly fine-tune each The angle and relative distance of the beam splitter can only be assembled, which makes the assembly and adjustment process cumbersome.

Utility model content

In order to solve the above-mentioned technical problems in the background technology, the utility model provides a device that facilitates the installation and adjustment of the spectroscopic system, which can simplify the process of assembling and adjusting the spectroscopic system and can improve work efficiency.

The technical solution of the utility model is: the utility model provides a device that facilitates the installation and adjustment of the spectroscopic system. A set of fixed-distance tooling; each beam splitter of the beam-splitting system is placed on the fixed-distance tooling; the distance between the two adjacent sets of fixed-distance tooling defines the distance between the parallel light rays emitted by the beam-splitting system.

The above-mentioned fixed-distance tooling includes a spectroscopic mirror seat and a fixed-distance rotating shaft respectively movable on the substrate; the spectroscopic mirror in the beam-splitting system is arranged between the spectroscopic mirror seat and the fixed-distance rotating shaft and rotates synchronously with the fixed-distance rotating shaft around the axis where the fixed-distance rotating shaft is located ; The distance between the fixed-distance rotating shafts of the two adjacent groups of fixed-distance tooling defines the distance between the parallel light rays emitted by the light-splitting system.

The above-mentioned fixed-distance rotating shaft includes the central axis of the fixed-distance rotating shaft and the extended section of the fixed-distance rotating shaft that is arranged at the end of the central axis of the fixed-distance rotating shaft and is perpendicular to the central axis of the fixed-distance rotating shaft and extends to the outside of the central axis of the fixed-distance rotating shaft; The extension section includes the end face of the fixed-distance rotating shaft; the spectroscope in the beam splitting system is arranged between the beam-splitting mirror seat and the end face of the fixed-distance rotating shaft, and rotates synchronously with the central axis of the fixed-distance rotating shaft around the axis where the central axis of the fixed-distance rotating shaft is located.

The axis where the central axis of the fixed-distance rotating shaft is located coincides with the center of the plane of the beam splitter.

A round hole of the fixed-distance rotating shaft is arranged on the above-mentioned base plate; the central axis of the fixed-distance rotating shaft extends into the round hole of the fixed-distance rotating shaft.

The machining accuracy of the circular hole of the fixed-distance rotating shaft is less than 0.02 mm; the gap between the central axis of the fixed-distance rotating shaft and the circular hole of the fixed-distance rotating shaft is less than 0.02 mm.

The base plate is also provided with fixing screw holes of the mirror base; the beam splitter base is movably arranged in the fixing screw holes of the mirror base through screws.

There is a gap between the fixing screw hole of the mirror base and the screw.

The utility model has the advantages of:

The utility model provides a device which facilitates the installation and adjustment of the spectroscopic system. In the design of the device, a fixed-distance rotating shaft mechanism is added to fix each spectroscope, so as to prevent each spectroscope in the spectroscopic system from moving in the S or N direction during the process of assembling and adjusting. In case of parallel offset, the spectroscopic system only needs to be adjusted in angle, and the parameter indexes of the distance a and b of the parallel light rays are guaranteed by the precision of machining. The utility model simplifies the installation and adjustment process of the light splitting system, greatly shortens the installation and adjustment time, improves work efficiency, is simple and reliable, and is easy to realize.

Description of drawings

Fig. 1 is a schematic diagram of the light path principle of the light splitting system in the prior art;

Fig. 2 is a schematic diagram of the displacement of the beam splitting prism in the beam splitting system in the prior art during the assembly and adjustment process;

Fig. 3 is a structural schematic diagram of the device for facilitating the installation and adjustment of the light splitting system of the present invention;

Fig. 4 is the schematic diagram of the front view structure of the fixed-distance rotating shaft adopted by the utility model;

Figure 5 is a top view of Figure 4;

Fig. 6 is a three-dimensional perspective view of Fig. 4;

Fig. 7 is a top view structural diagram of the beam splitter mounting substrate adopted by the utility model;

in:

1-base plate; 2-fixed-distance rotating shaft; 21-central axis of fixed-distance rotating shaft; 22-end face of fixed-distance rotating shaft; 23-extended section of fixed-distance rotating shaft; 3-beam splitter; Holes; 6-circular holes of fixed distance rotating shaft.

Detailed ways

Referring to Fig. 3, the utility model provides a device for facilitating the installation and adjustment of the spectroscopic system, which includes a substrate 1 and at least three sets of fixed-distance tooling movably arranged on the substrate 1; each spectroscopic system of the spectroscopic system The mirror 3 is placed on the fixed-distance tooling; the distance between two adjacent groups of fixed-distance tooling defines the distance between the parallel light rays emitted by the light splitting system. The distances a and b between the parallel light rays are limited by the fixed-distance rotating shaft 2, so the parameters of the distances a and b can be achieved only by ensuring the machining accuracy, without further optical adjustment.

The fixed-distance tooling includes the beam splitter base 4 and the fixed-distance rotating shaft 2 which are respectively movably arranged on the base plate 1; The axis where the distance rotating shaft 2 is located rotates synchronously; the distance between the fixed distance rotating shafts 2 of two adjacent groups of fixed distance tooling defines the distance between the parallel light rays emitted by the light splitting system.

Referring to Fig. 4, Fig. 5 and Fig. 6, the fixed-distance rotating shaft 2 comprises a fixed-distance rotating shaft central axis 21 and a center axis 21 which is arranged on the end of the fixed-distance rotating shaft central axis 21 and is perpendicular to the fixed-distance rotating shaft central axis 21. The fixed-distance rotating shaft extension section 23 that extends outside; The fixed-distance rotating shaft extension section 23 comprises the fixed-distance rotating shaft end face 22; The shaft 21 rotates synchronously around the axis where the center shaft 21 of the fixed-distance rotating shaft is located.

The axis where the central axis 21 of the fixed-distance rotating shaft coincides with the plane center of the beam splitter 3 .

Referring to FIG. 7 , the substrate 1 is provided with a round hole 6 for the fixed-distance rotating shaft;

The machining accuracy of the round hole 6 of the fixed-distance rotating shaft is less than 0.02 mm; the clearance between the center shaft 21 of the fixed-distance rotating shaft and the round hole 6 of the fixed-distance rotating shaft is less than 0.02 mm.

The base plate 1 is also provided with a mirror base fixing screw hole 5; the beam splitter base 4 is movably arranged in the mirror base fixing screw hole 5 through screws. There is a gap between the mirror base fixing screw hole 5 and the screw. The beam splitter base 4 is designed with three mirror base fixing screw holes 5 to be connected and fixed to the base plate 1 , and the gap between the mirror base fixing screw holes 5 and the connecting screws can fully meet the rotation adjustment margin of the beam splitter base 4 .

When the utility model is in use, at first the fixed-distance rotating shaft is installed on the base plate, and the screws are connected, but the screws are not tightened, and the fixed-distance rotating shaft can rotate in a small angle. Connect the beam splitter base to the base plate, and do not tighten the screws, and the beam splitter base can also be rotated within a small angle. When the beam splitter needs to be rotated for adjustment, the beam splitter base should be pushed to position the beam splitter base close to the end face of the fixed-distance rotating shaft, and rotate around the fixed-distance rotating shaft for angle adjustment. After the angle meets the requirements, tighten all the connecting screws to complete the assembly.

Claims (8)

1. A device that facilitates the installation and adjustment of the spectroscopic system is characterized in that: the device that facilitates the adjustment of the spectroscopic system includes a substrate and at least three groups of fixed-distance tooling that are movably arranged on the substrate; each spectroscope of the spectroscopic system is placed in a fixed distance tooling; the distance between the two adjacent sets of fixed-distance tooling defines the distance between the parallel light rays emitted by the light splitting system. 2. The device for facilitating the installation and adjustment of the spectroscopic system according to claim 1, characterized in that: the fixed-distance tooling includes a spectroscopic mirror seat and a fixed-distance rotating shaft respectively movably arranged on the substrate; the spectroscopic mirror in the spectroscopic system is arranged on The distance between the beam splitter base and the fixed-distance rotating shaft rotates synchronously with the fixed-distance rotating shaft around the axis where the fixed-distance rotating shaft is located; spacing between. 3. The device for facilitating the installation and adjustment of the spectroscopic system according to claim 2, characterized in that: the fixed-distance rotating shaft includes a central axis of the fixed-distance rotating shaft and an A fixed-distance rotating shaft extension extending vertically to the outside of the central axis of the fixed-distance rotating shaft; the fixed-distance rotating shaft extension includes the end face of the fixed-distance rotating shaft; And rotate synchronously around the axis where the central axis of the fixed-distance rotating shaft is located along with the central axis of the fixed-distance rotating shaft. 4. The device for facilitating installation and adjustment of the spectroscopic system according to claim 3, wherein the axis where the central axis of the fixed-distance rotating shaft is located coincides with the center of the spectroscopic mirror plane. 5. The device for facilitating the installation and adjustment of the spectroscopic system according to claim 3 or 4, characterized in that: the base plate is provided with a round hole of the fixed-distance rotating shaft; the central axis of the fixed-distance rotating shaft extends into the round hole of the fixed-distance rotating shaft . 6. The device for facilitating the installation and adjustment of the spectroscopic system according to claim 5, characterized in that: the machining accuracy of the round hole of the fixed-distance rotating shaft is less than 0.02 mm; The matching gap is less than 0.02mm. 7. The device for facilitating the installation and adjustment of the spectroscopic system according to claim 6, characterized in that: the base plate is also provided with a mirror base fixing screw hole; the spectroscopic mirror base is connected to the mirror base fixing screw hole by screws. 8 . The device for facilitating the installation and adjustment of the spectroscopic system according to claim 7 , wherein there is a gap between the fixing screw hole of the mirror base and the screw.