CN2378731Y

CN2378731Y - Light biochemical analyser

Info

Publication number: CN2378731Y
Application number: CN 99212817
Authority: CN
Inventors: 朴仁官; 张玲; 邬云山
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 1999-06-02
Filing date: 1999-06-02
Publication date: 2000-05-17
Anticipated expiration: 2009-06-02

Abstract

The utility model relates to a light path structure of a biochemical analyzer, and belongs to a light path structure of test equipment in the field of medical clinical test. A light source is reflected by a Feinieke light gathering cover to emit parallel light. A wide band cut-off light filter which can filter off a wave band (0.7 to 2.2 mu) of near infrared light generating heat, the surface temperature of an interference filter is reduced, therefore the stability and the reliability of test data are ensured. A transmission system of the light adopts optical fiber, which brings convenience for debugging the analyzer; meanwhile, processing is reduced, the analyzer cost is reduced and the work efficiency is enhanced.

Description

A kind of light channel structure of Biochemical Analyzer

The utility model belongs to a kind of light channel structure of the Biochemical Analyzer in the clinical medicine check field.

Before the utility model, the light channel structure of relevant Biochemical Analyzer, existing several forms.Wherein, the prior art the most approaching with the utility model is the light channel structure of the CA-958D type biochemical analysis of Changchun Optical and Precise Machinery Inst., Chinese Academy of Science's production.As shown in Figure 1: form by light source 1, plano-convex lens 2, interference filter 3, biconvex lens 4, the cuvette 5 that flows, receiver 6, motor 7, rotating disk 8.

This light channel structure complexity is difficult to make, and debug very difficultly, makes troubles for the batch process of enforcement Biochemical Analyzer, has a strong impact on work efficiency.In order to overcome above-mentioned shortcoming, the purpose of this utility model is to design a kind of new light path, makes it simple in structure, is convenient to processing and manufacturing, is convenient to debugging, improves the production efficiency and the checking measurements stability of Biochemical Analyzer, guarantees the accurate, reliable of measured data.

Detailed content of the present utility model is as shown in Figure 2: be made up of Fresnel snoot 9, light source 10, broadband cutoff filter 11, interference filter 12, optical fiber 13, the cuvette 14 that flows, receiver 15, motor 16, rotating disk 17.

In the light path along the arraying from left to right reception head of Fresnel snoot 9, light source 10, broadband cutoff filter 11, interference filter 12, optical fiber 13 of optical axis.Light source 10 places on the focus of Fresnel snoot 9, broadband cutoff filter 11 is perpendicular to optical axis and center and optical axis coincidence, place the right of light source 10, the rotating disk 17 that is installed on 16 in the motor has light hole, the center line in hole and optical axis coincidence, interference filter 12 are installed on the light hole of rotating disk 17, and the center that optical fiber 13 receives head places the right of rotating disk 17 light holes on optical axis, the cuvette 14 that flows places the tail end of optical fiber 13, and receiver 15 is aimed at the light exit of the cuvette 14 that flows.

Principle of work: the directional light that light source 10 sends through 9 reflections of Fresnel snoot, by broadband cutoff filter 11, the near infrared spectrum wave band of 700nm to 2.2w is filtered, thereby reduced the temperature on interference filter 12 surfaces, directly imported the cuvette 14 that flows through the directional light of interference filter 12 by optical fiber 13, this directional light by the measured matter in the cuvette 14 that flows after, shine directly into the receiving plane of receiver 15, finish the photosignal conversion, carry out data processing by computing machine.

Good effect of the present utility model: in the utility model light channel structure, light source 10 and Fresnel snoot 9 can be made of one, can buy ready-made commodity in market, broadband cutoff filter product 11, the light of near-infrared band is filtered, interference filter 12 surface temperatures have been reduced, can obtain reliable and stable test data, the directional light that interference filter 12 sends needn't directly enter optical fiber 13 through focusing, both reduce the transmission of the light in the prior art in lens barrel, also reduced the focusing process, not only reduced the light tube processing in the processing and manufacturing process, owing to needn't improve work efficiency, the cost that reduced again easy to use widely through focusing.

Description of drawings: Fig. 1 is the structural representation of prior art, and Fig. 2 is a structural representation of the present utility model, and Figure of abstract also adopts Fig. 2.

Most preferred embodiment: Fresnel snoot 9 adopts the rigid plastic cast molding, inside surface plating visible range reflective aluminum film and light source 10 are made of one, broadband cutoff filter 11 adopts the machine-shaping of QB21 coloured glass, interference filter 12 is to select according to the difference needs of measured matter, it is the optical fiber of 5mm that optical fiber 13 adopts the visible range diameter, the cuvette 14 that flows is selected the Changchun ray machine institute patented product of development and design voluntarily for use, the commercially available silicon photocell of receiver 15 employings.

Claims

1, a kind of light channel structure of Biochemical Analyzer, be by light source, optical filter, motor, rotating disk, cuvette flows, receiver is formed, it is characterized in that in the light path along optical axis, arranging Fresnel snoot 9 from left to right in proper order, light source 10, broadband cutoff filter 11, interference filter 12, the reception head of optical fiber 13, light source 10 places on the focus of Fresnel snoot 9, broadband cutoff filter 11, perpendicular to optical axis and center and optical axis coincidence, place the right of light source 10, the rotating disk 17 that is installed on 16 in the motor has light hole, the center line in hole and optical axis coincidence, interference filter 12 is installed on the light hole of rotating shaft 17, and the center that optical fiber 13 receives head places the right of rotating disk 17 light holes on optical axis, the cuvette 14 that flows places the tail end of optical fiber 13, and receiver 15 is aimed at the light path outlet of the cuvette 14 that flows.