A short focal length full spectrum optical path structure

Abstract

The present invention discloses a short focal length full spectrum optical path structure, which makes the whole optical path distribution reasonable, reduces the volume of the whole ICP spectrometer, and thus meets the needs of miniaturized intelligent products. It includes: a shell; a light source incident mechanism; a slit mechanism; a first reflector; a focusing mirror; a grating; a second reflector; and a detector; the bottom side of the inner cavity of the shell is a combustion chamber, the shell is concave corresponding to the upper part of the combustion chamber, forming an inner concave angle, the vertical surface of the inner concave angle is an oblique vertical surface, and a detector is installed on the oblique vertical surface, the light source incident mechanism is fixed on the outer wall of the combustion chamber, the slit mechanism is arranged in the middle of the length direction of the inner cavity of the shell, and the first reflector and the second reflector are arranged in sequence from bottom to top at one end of the inner cavity of the shell away from the combustion chamber, and the incident light passes through the slit of the slit mechanism and then hits the first mirror surface of the first reflector, and the upper part of the slit mechanism is provided with a focusing mirror and a grating, and the grating is arranged on the side close to the combustion chamber.

Description

Technical Field

[0001] The invention relates to the technical field of ICP spectrometer structure, in particular to a short-focal-length full-spectrum optical path structure. Background Art

[0002] ICP spectrometer mainly consists of RF source, injection system and optical path. The size of the optical path determines the size of the instrument itself. The market demand for products requires not only improvement in technical parameters, but also requirements for product size. Currently, miniaturized and intelligent products have a higher market share. Therefore, it is urgent to develop a short-spacing full-spectrum optical path structure to meet the needs of miniaturized and intelligent products. Summary of the invention

[0003] In view of the above problems, the present invention provides a short focal length full spectrum optical path structure, which makes the entire optical path distribution reasonable and reduces the volume of the entire ICP spectrometer, thereby meeting the needs of miniaturized intelligent products.

[0004] A short focal length full spectrum optical path structure, characterized in that it comprises:

[0005] case;

[0006] Light source incident mechanism;

[0007] Slit mechanism;

[0008] A first reflector;

[0009] Focusing lens;

[0010] Grating;

[0011] A second reflector;

[0012] and detectors;

[0013] The bottom side of the inner cavity of the shell is a combustion chamber, and the shell is concave corresponding to the upper part of the combustion chamber to form an inward concave corner, and the vertical surface of the inward concave corner is an oblique vertical surface, and a detector is installed on the oblique vertical surface. The light source incident mechanism is fixedly installed on the outer wall of the combustion chamber, and a slit mechanism is provided in the middle of the length direction of the inner cavity of the shell. The end of the inner cavity of the shell away from the combustion chamber is provided with a first reflector and a second reflector in sequence from bottom to top, and the incident light passes through the slit of the slit mechanism and is incident on the first mirror surface of the first reflector. The focusing mirror and grating are provided on the upper part of the slit mechanism, and the grating is arranged on the side close to the combustion chamber. The first light reflected by the first mirror surface passes through the focusing plane of the focusing mirror and converges on the grating and is reflected by the grating. The second light reflected by the grating passes through the beam splitting surface of the focusing mirror and is incident on the second mirror surface of the second reflector, and the second mirror transmits the reflected third light to the observation port of the detector.

[0014] It is further characterized by:

[0015] The deflection angle of the first mirror surface of the first reflector is adjustable;

[0016] The deflection angle of the second mirror surface of the second reflector is adjustable;

[0017] The included angle between the incident light and the first light is 20°, the included angle between the first light and the second light is 28°, and the included angle between the second light and the third light is 24°;

[0018] The focal length between the incident point of the grating and the exit point of the first mirror is 350 mm.

[0019] After adopting the structure of the present invention, the optical signal of the ICP flame passes through the slit from the prosthesis, hits the focusing mirror through the first reflector, and then reaches the grating through the focusing mirror. The grating passes through the splitting surface of the focusing mirror and hits the full spectrum to the second reflector, and finally passes through the observation port of the detector through the full spectrum reflected by the second reflector. It makes the entire optical path distribution reasonable and reduces the volume of the entire ICP spectrometer, thereby meeting the needs of miniaturized intelligent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of a front view of a specific embodiment of the present invention;

[0021] Figure 2 It is a light path angle arrangement diagram of a specific embodiment of the present invention;

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] Shell 10, inner cavity 101, combustion chamber 102, inner concave corner 103, oblique vertical surface 104, light source incident mechanism 20, slit mechanism 30, first reflector 40, first mirror surface 41, focusing mirror 50, grating 60, second reflector 70, second mirror surface 71, detector 80, observation port 81;

[0024] Incident light 1, first light 2, second light 3, third light 4. DETAILED DESCRIPTION

[0025] A short focal length full spectrum optical path structure, see Figure 1 , Figure 2 , which includes a housing 10, a light source incident mechanism 20, a slit mechanism 30, a first reflector 40, a focusing mirror 50, a grating 60, a second reflector 70, and a detector 80;

[0026] The bottom side of the inner cavity 101 of the shell 10 is a combustion chamber 102. The upper part of the shell 10 corresponding to the combustion chamber 102 is concave to form an inwardly concave corner 103. The vertical surface of the inwardly concave corner 103 is an oblique vertical surface 104. The detector 80 is installed on the oblique vertical surface 104. The outer wall of the combustion chamber 102 is fixed with a light source incident mechanism 20. The middle part of the inner cavity of the shell 10 is provided with a slit mechanism 30 in the longitudinal direction. The end of the inner cavity 101 of the shell 10 away from the combustion chamber 102 is provided with a first reflector 40 and a second reflector 70 in sequence from bottom to top. The incident light 1 passes through the slit mechanism 30. The slit of the slit mechanism 30 is reflected on the first mirror surface 41 of the first reflector 40. A focusing mirror 50 and a grating 60 are arranged on the upper part of the slit mechanism 30. The grating 60 is arranged on the side close to the combustion chamber 102. The first light 2 reflected by the first mirror surface 41 passes through the focusing surface of the focusing mirror 50 and converges on the grating 60 and is reflected by the grating 60. The second light 3 reflected by the grating 60 passes through the splitting surface of the focusing mirror 50 and is reflected on the second mirror surface 71 of the second reflector 70. The second mirror surface 71 transmits the reflected third light 4 to the observation port 81 of the detector 80.

[0027] In a specific implementation, the deflection angle of the first mirror surface 41 of the first reflector 40 is adjustable;

[0028] The deflection angle of the second mirror surface 71 of the second reflector 70 is adjustable;

[0029] The angle between the incident light 1 and the first light 2 is 20°, the angle between the first light 2 and the second light 3 is 28°, and the angle between the second light 3 and the third light 4 is 24°; the focal length between the incident point of the grating 60 and the exit point of the first mirror 41 is 350 mm.

[0030] Its working principle is as follows: the light signal of the ICP flame passes through the slit, hits the focusing mirror through the first reflector, and then reaches the grating through the focusing mirror. The grating passes through the splitting surface of the focusing mirror and hits the full spectrum to the second reflector, and finally passes through the observation port of the detector through the full spectrum reflected by the second reflector. It makes the entire light path distribution reasonable and reduces the volume of the entire ICP spectrometer, thereby meeting the needs of miniaturized intelligent products.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A short focal length full spectrum optical path structure, characterized in that: It includes: case; Light source incident mechanism; Slit mechanism; first reflector; Focusing lens; Grating; A second reflector; and detectors; The bottom side of the inner cavity of the shell is a combustion chamber, and the shell is concave corresponding to the upper part of the combustion chamber to form an inward concave corner, and the vertical surface of the inward concave corner is an oblique vertical surface, and a detector is installed on the oblique vertical surface, and the light source incident mechanism is fixedly installed on the outer wall of the combustion chamber, and a slit mechanism is arranged in the middle of the length direction of the inner cavity of the shell, and a first reflector and a second reflector are arranged in sequence from bottom to top at one end of the inner cavity of the shell away from the combustion chamber, and the incident light passes through the slit of the slit mechanism and is incident on the first mirror surface of the first reflector, and the focusing mirror and grating are arranged on the upper part of the slit mechanism, and the grating is arranged on the side close to the combustion chamber, and the first light reflected by the first mirror surface passes through the focusing plane of the focusing mirror and converges on the grating and is reflected by the grating, and the second light reflected by the grating passes through the beam splitting surface of the focusing mirror and is incident on the second mirror surface of the second reflector, and the second mirror transmits the reflected third light to the observation port of the detector.

2. The short focal length full spectrum optical path structure according to claim 1, characterized in that: The deflection angle of the first mirror surface of the first reflector is adjustable.

3. The short focal length full spectrum optical path structure according to claim 2, characterized in that: The deflection angle of the second mirror surface of the second reflector is adjustable.

4. The short focal length full spectrum optical path structure according to claim 3, characterized in that: The included angle between the incident light and the first light is 20°, the included angle between the first light and the second light is 28°, and the included angle between the second light and the third light is 24°.

5. The short focal length full spectrum optical path structure according to claim 4, characterized in that: The focal length between the incident point of the grating and the exit point of the first mirror is 350 mm.

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