CN202512053U - Optical system of large flat sheet spectrum tester - Google Patents

Abstract

An optical system of a large flat sheet spectrum tester comprises a tungsten lamp light source, wherein light of the tungsten lamp light source diffuses to a first spherical mirror, is reflected by the first spherical mirror and then radiates to a first reflecting mirror through an incident light slit; the light is reflected by the first reflecting mirror, passes through a second spherical mirror and then radiates to a grating; after light dispersed by the grating radiates to a third spherical mirror and is emit by the third spherical mirror, monochromatic light which is emit by an emergent light slit and an optical filter respectively is emit to a first lens; the monochromatic light is emit by the first lens and then reaches a second reflecting mirror; monochromatic light emit by the second reflecting mirror passes through a test sample table and then emits to the second lens; and monochromatic light emit by the second lens finally reaches a receiver. The optical system is characterized in that an angle of 45 degrees is formed between the second reflecting mirror and incident light. According to the optical system disclosed by the utility model, the sample can be directly placed on a platform for testing, and thus the positioning of samples with small apertures is ensured and the test precision and accuracy are ensured.

Description

The optical system of big plain film spectral investigator

Technical field

The utility model relates to the spectral instrument field that material composition is analyzed, and specifically just relates to a kind of optical system that can carry out the big plain film spectral investigator of vertical checkout to the little light hole of large scale sample.

Background technology

The basic functional principle of big plain film spectral investigator is that the material in the solution excites down in the irradiation of light, has produced the absorption effect to light, and material is to have optionally to the absorption of light.Various material all has its absorption spectrum separately; Therefore when certain monochromatic light passes through solution; Its energy will be absorbed and weaken; The degree that luminous energy weakens and the concentration of material have certain proportionate relationship, big plain film spectral investigator utilize this principle come to by analytic sample and standard specimen light intensity to amalyzing substances composition recently.

Big plain film spectral investigator all has a wide range of applications in every field such as agricultural product, food, health, medicine, chemical industry, people's lives, is modern industry, agricultural, the indispensable analytical instrument of scientific research.Big plain film spectral investigator basic structure is made up of light source, monochromator, sample chamber, photoelectric detection system and signal indicating device five parts.

Big plain film spectral investigator sample chamber is the place of placing sample to be detected, and traditional testing tool sample chamber volume is less, in case when sample to be tested is the template sample; Sample can only be erected on the test platform; The location that is unfavorable for sample, influence seriously measuring accuracy and test accuracy, when test size is greater than the sample of 80mm * 100mm if desired; Also need bulk sample be destroyed; Be cut into the size aptitude test less than 80mm * 100mm, complicated operation can't test size allows the sample that destroys more greatly and not.

At present traditional simultaneously testing tool is in test process, and the test hot spot is bigger, is not suitable for the requirement of existing more and more science and technology field to the test hot spot.

The utility model content

The purpose of the utility model provides a kind of optical system of big plain film spectral investigator; Through change to existing light path; Make that the optic path direction changes in the big plain film spectral investigator of tradition, dwindle the test hot spot, realized the little light hole test of large scale testing sample.Testing sample can be placed directly on the worktable test, guaranteed measuring accuracy and test accuracy, easy and simple to handle, again can not damage test sample, practiced thrift cost.

Technical scheme

In order to realize above-mentioned technical purpose, the utility model designs a kind of optical system of big plain film spectral investigator, comprises tungsten light source; The light of tungsten light source diffuses on first spherical mirror, and light is equipped with the incident light slit after reflecting from first spherical mirror on the reflected light path; Light is mapped to first catoptron through the incident light slit, light by first mirror reflects after, get into second spherical mirror on the reflected light path; Via being incident upon the 3rd spherical mirror after the grating dispersion on the second spherical mirror reflected light path; Light gets into after the 3rd spherical mirror penetrates and is contained in the emergent light slit that penetrates on the light path, and light is incident upon optical filter after the emergent light slit penetrates, from monochromatic light to the first lens of optical filter ejaculation; Monochromatic light arrives second catoptron after first lens penetrate; The monochromatic light that penetrates from second catoptron is incident upon second lens after penetrating the specimen platform on the light path, the monochromatic light that penetrates from second lens arrives receiver at last, it is characterized in that:

Said second catoptron becomes 45 with incident light.

Said incident light slit and emergent light slit all are variable extra small rounded slot.

Beneficial effect

The utility model has carried out new design on light path; Monochromatic light vertically penetrated sample through 45 ° catoptron with monochromatic light again through lens and was mapped on the photelectric receiver again; Thereby having realized that sample can directly lie on the worktable tests; Guarantee the location of small-bore sample, guaranteed measuring accuracy and accuracy.

Description of drawings

Accompanyingdrawing 1 is the structural representation of the utility model.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further specified.

Shown in accompanyingdrawing 1; A kind of optical system of big plain film spectral investigator; Comprisetungsten light source 1, the light oftungsten light source 1 diffuses on firstspherical mirror 2, after light reflects from firstspherical mirror 2; Incident light slit 3 through variable extra small rounded slot is mapped tofirst catoptron 4; Light by the reflection offirst catoptron 4 after, after grating 6 chromatic dispersions, be incident upon the 3rdspherical mirror 7 by being mapped to grating 6 behind secondspherical mirror 5, again after the 3rdspherical mirror 7 penetrates successively through theemergent light slit 8 of variable extra small rounded slot and monochromatic light to thefirst lens 10 ofoptical filter 9 ejaculations; Monochromatic light arrival afterfirst lens 10 penetrate becomes 45second catoptron 11 with incident light; The monochromatic light that penetrates fromsecond catoptron 11 is incident uponsecond lens 13 after through thespecimen platform 12 that is placed with sample, and the light that penetrates fromsecond lens 13 arrivesreceiver 14 at last, andreceiver 14 is analyzed and obtained material composition.

The utility model has carried out new design on light path; Monochromatic light vertically penetrated sample through 45 °second catoptron 11 with monochromatic light again through lens and was mapped on thephotelectric receiver 12 again; Thereby having realized that sample can directly lie on the worktable tests; Guarantee the location of small-bore sample, improved measuring accuracy and accuracy.

Claims (2)

1. the optical system of a big plain film spectral investigator; Comprise tungsten light source (1), the light of tungsten light source (1) diffuses on first spherical mirror (2), after light reflects from first spherical mirror (2); Incident light slit (3) is housed on the reflected light path; Light injects to first catoptron (4) through incident light slit (3), and light gets into second spherical mirror (5) on the reflected light path after being reflected by first catoptron (4); Via being incident upon the 3rd spherical mirror (7) after grating (6) chromatic dispersion on second spherical mirror (5) reflected light path; Light gets into after the 3rd spherical mirror (7) penetrates and is contained in the emergent light slit (8) that penetrates on the light path, and light is incident upon optical filter (9) after emergent light slit (8) penetrates, from monochromatic light to the first lens (10) of optical filter (9) ejaculation; Monochromatic light arrives second catoptron (11) after first lens (10) penetrate; The monochromatic light that penetrates from second catoptron (11) is incident upon second lens (13) after penetrating the specimen platform (12) on the light path, the monochromatic light that penetrates from second lens (13) arrives receiver (14) at last, it is characterized in that:

Said second catoptron (11) becomes 45 with incident light.

2. the optical system of a kind of big plain film spectral investigator as claimed in claim 1 is characterized in that: said incident light slit (3) and emergent light slit (8) all are variable extra small rounded slot.

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