CN203310748U

CN203310748U - Optical system of portable automatic biochemistry detector

Info

Publication number: CN203310748U
Application number: CN2013203428341U
Authority: CN
Inventors: 王云田
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2013-11-27
Anticipated expiration: 2023-06-14

Abstract

The utility model relates to the technical field of optics and particularly relates to an optical system of a portable automatic biochemistry detector. The optical system comprises a convex lens, an optical grating arranged above the convex lens, a photosensitive diode arranged above the optical grating and an LED (light-emitting diode) light source, wherein the incident light of the LED light source and the longitudinal axis of the convex lens can form a certain angle, and the longitudinal center lines of the convex lens, the optical grating and the photosensitive diode are same; the convex lens, the optical grating, the photosensitive diode and the LED light source are all arranged in the same plastic container. The optical system of the portable automatic biochemistry detector provided by the utility model is researched and developed to comply with the development of a POCT (point-of-care testing) and is used together with a matched special test box to detect human blood and further carry out the quantitative analysis, the structure is simple, the cost is low, the technological and performance index requirements of the optical system of the portable automatic biochemistry detector can be completely met according to the practical analysis detection, and the stability is good.

Description

The optical system of Portable Automatic bio-chemical detector

Technical field

The utility model relates to optical technical field, relates in particular to a kind of optical system of Portable Automatic bio-chemical detector.

Background technology

Current, automatic biochemical detector in industry mostly is big-and-middle-sized instrument, the Optical System Design complexity, expensive, and adopt striograph conformal analysis mode more, because the structure of filter type can cause whole optical design complexity, reliability and stability are all not enough, and for the automatic biochemical detector, the stability of instrument is very important requirement, cause, existing bio-chemical detector can not meet demand.Need small-sized, a stable biochemistry detection system.

The utility model content

Technical problem to be solved in the utility model is the defect that optical system is complicated, expensive, stability is bad of existing Portable Automatic bio-chemical detector, a kind of optical system of Portable Automatic bio-chemical detector is provided, and it is simple in structure, volume is little, cost is low, good stability.

The optical system of Portable Automatic bio-chemical detector described in the utility model, it comprises convex lens, be arranged on described convex lens top grating, be arranged on photodiode and the LED light source of described grating top, the incident ray of LED light source becomes 30 ~ 60 angles of spending with the longitudinal axis of described convex lens; The longitudinal centre line of described convex lens, grating and described photodiode is identical.

To further improvement in the technical proposal, be that described convex lens, grating, photodiode and LED light source all are arranged in same plastic bottle.

Preferably, the incident ray of described LED light source becomes 45 degree with the longitudinal axis of described convex lens.

The optical system of this Portable Automatic bio-chemical detector adapts to the development of POCT and develops, it supports the use with the special test box adapted, utilize optical detection to analyze the method that antigen-antibody reaction shows, blood of human body is detected, make quantitative test.That this detection has is special, sensitive, characteristics fast, test item can reach tens of kinds, it is widely used in different medical unit, the complementary means that diagnose the illness had both been can be used as, again can be for the extensive examination of some disease, thereby for stoping stretching and spread unchecked and laying a good foundation of disease.And in the automatic biochemical detector, its core is exactly Systems for optical inspection, its performance directly has influence on accuracy of detection and the performance index of whole automatic biochemical detector.

The optical system of the Portable Automatic bio-chemical detector of the utility model, its beneficial effect compared to existing technology is:

Adopted the optical design of raster pattern, utilize the array mode of a narrow slit grating and single face convex lens, in conjunction with emitting led and photodiode, can accurate compact package in the plastic cement structure of a 20mm * 20mm left and right size, form the precision optics module, coordinate again a set of precision, accurate transmission positioning system, thereby simple, effectively realized the desired optical system of automatic biochemical detector, it is simple in structure, cost is low, through actual analysis, detect, this optical system has met the desired technology of optical system and the performance index of Portable Automatic bio-chemical detector fully, and good stability.

The accompanying drawing explanation

Accompanying drawing 1 is the optical system decomposition texture schematic diagram of the Portable Automatic bio-chemical detector of the utility model embodiment;

Accompanying drawing 2 is the optical system one-piece construction schematic diagram of the Portable Automatic bio-chemical detector of the utility model embodiment;

Wherein:

1, convex lens 2, grating 3, photodiode

4, LED light source 5, plastic bottle.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment:

The optical system of Portable Automatic bio-chemical detector described in the utility model, as shown in accompanying drawing 1 ~ 2, it comprises a plastic bottle 5, the interior convex lens 1 that arrange of plastic bottle 5, convex lens 1 top arranges a narrow slit grating 2, grating 2 tops arrange a photodiode 3, convex lens 1, the longitudinal centre line of grating 2 and photodiode 3 is identical, convex lens 1 and grating 2, between grating 2 and photodiode 3, pass through stent support, test agent is placed in convex lens 1 below, with the center line of convex lens 1, become the direction of 30 ~ 60 degree that one LED light source 4 is set, make the incident ray of LED light source 4 with the longitudinal axis of convex lens 1, become 30 ~ 60 degree, in the present embodiment, the incident ray of LED light source 4 becomes 45 degree with the longitudinal axis of convex lens.

LED light source 4 adopts white and red (wavelength 630) light source, is respectively used to detect the analysis antigen-antibody reaction and shows band and read bar code.

Principle of work of the present utility model is:

White LED light source 4 incides on the test strip of test agent, and under driven by motor, test strip is scanned, now on test strip because antigen-antibody reaction has produced different colour developings, these colour developing positions can absorb the light of certain wavelength that White LED light source 4 sends, then through partially absorbing light planoconvex lens 1 that back reflection goes out, focus on the narrow groove position of grating 2, after grating 2 diffraction, by photodiode 3, collected, and be converted into electric signal, by built-in micro computer analyzing and processing, by this electric signal contrast background signal is changed to the analysis of doing, the combined standard curve, just can draw the quantitative result of this detection.

When LED light source 4 adopted red-light source, it incided on bar code, by same optical system, and, after built-in micro computer is analyzed, read the expressed information of this bar code.

The optical system of the Portable Automatic bio-chemical detector of the utility model, it has adopted the optical design of raster pattern, utilize the array mode of a narrow slit grating and single face convex lens, in conjunction with emitting led and photodiode, can accurate compact package in the plastic cement structure of a 20mm * 20mm left and right size, form the precision optics module, coordinate again a set of precision, accurate transmission positioning system, thereby simple, effectively realized the desired optical system of automatic biochemical detector, it is simple in structure, cost is low, through actual analysis, detect, this optical system has met the desired technology of optical system and the performance index of Portable Automatic bio-chemical detector fully, and good stability.

It is more than preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.

Claims

1. the optical system of a Portable Automatic bio-chemical detector is characterized in that:

Comprise convex lens (1), be arranged on described convex lens (1) tops grating (2), be arranged on photodiode (3) and the LED light source (4) of described grating (2) top, the incident ray of LED light source (4) becomes 30 ~ 60 angles of spending with the longitudinal axis of described convex lens (1);

The longitudinal centre line of described convex lens (1), grating (2) and described photodiode (3) is identical.

2. the optical system of Portable Automatic bio-chemical detector according to claim 1 is characterized in that:

Described convex lens (1), grating (2), photodiode (3) and LED light source (4) all are arranged in same plastic bottle (5).

3. the optical system of Portable Automatic bio-chemical detector according to claim 1 is characterized in that:

The incident ray of described LED light source (4) becomes 45 degree with the longitudinal axis of described convex lens (1).