Light source stability detection mechanism

Abstract

The utility model discloses a light source stability detection mechanism which comprises a monitoring room, and the monitoring room is internally provided with a beam splitter which can enable part of fluorescent light emitted by a light source to pass through for subsequent substance detection and enable part of the fluorescent light to be reflected; the incident convex lens sleeve is arranged at the side part of the beam splitter and is used for receiving the fluorescence emitted by the beam splitter and condensing the fluorescence; and the silicon photocell is arranged on the rear side of the incident convex lens sleeve and is used for receiving condensed light of the incident convex lens sleeve to detect whether the energy intensity of the light source is stable or not. The fluorescence emitted by the light source is subjected to beam splitting, one part of the fluorescence passes through the subsequent detection groove to detect substances, the other part of the fluorescence is reflected to the silicon photocell, and the energy intensity of the light source is detected through the silicon photocell, so that the stability of the light source is judged on line in real time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fluorescent detection equipment, concretely relates to a light source stability detection mechanism. BACKGROUND

[0002] The fluorescent detector mainly is through light source (such as xenon lamp) and emits excitation light, and after irradiating fluorescent substance, the fluorescence that fluorescent substance emits becomes monochromatic fluorescence through monochromator, then irradiates on sample.Light emitting diode will amplify and transmit the photocurrent received to recording instrument, to complete detection.

[0003] However, with the use of light source, there will be insufficient power supply and other unstable problems, which will affect the detection result. And the existing fluorescent detector all lack the structure that can detect whether the light source is abnormal on line in real time. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that provide a light source stability detection mechanism, can detect the stability of light source on line in real time.

[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A kind of light source stability detection mechanism, including monitoring room, monitoring room has: beam splitter, part of the fluorescence that can be passed through with subsequent substance detection is emitted by light source, part is reflected;Incidence convex mirror sleeve, is located in the side portion of beam splitter, receives the emission fluorescence of beam splitter and carries out light collection;Silicon photocell, is located in the back side of incidence convex mirror sleeve, receives the light collection of incidence convex mirror sleeve to detect whether the energy intensity of light source is stable.

[0007] The beam splitter includes a mirror seat, a light passage window opened on the mirror seat, and a reflection plate for shielding part of the light passage window.

[0008] The reflection plate shields the lower third of the light passage window.

[0009] The monitoring room adopts a light shield plate to form a light shield room, and an entrance window and an exit window are respectively arranged on the front side and the rear side.

[0010] The light source stability detection mechanism is arranged in the fluorescent detector, can split the fluorescence emitted by the light source, part of which passes through to the subsequent detection groove for detecting the substance, and the other part is reflected to the silicon photocell, and the energy intensity of the light source is detected by the silicon photocell to judge the stability of the light source on line in real time. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be explained in detail in combination with the drawings and specific embodiments:

[0012] Figure 1 This is a three-dimensional schematic diagram of the light source stability testing mechanism of this utility model installed on a fluorescence detector;

[0013] Figure 2 This is a schematic diagram of the light source stability testing mechanism of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the light-emitting window of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the monitoring room of this utility model; Detailed Implementation

[0016] This utility model provides a light source stability testing mechanism, such as... Figure 1 As shown, it can be installed in the fluorescence detector 1, located between the grating 2 and the detection slot 3. Please refer to... Figures 2-4 As shown, the testing mechanism mainly includes a monitoring room 4, which is enclosed by a light-shielding cover 5 to form a light-shielding chamber. An entrance window 6 and an exit window 7 are respectively opened on its front and rear sides. The monitoring room 4 contains a beam splitter 8, an incident convex lens sleeve 9, and a silicon photodiode 10. The beam splitter 8 is set at a certain deflection angle, allowing a portion of the fluorescence emitted from the light source 11 to pass through for subsequent material detection, while the remainder is reflected back to the incident convex lens sleeve 9. The incident convex lens sleeve 9 is located on the side of the beam splitter 8, receiving and focusing the emitted fluorescence. The silicon photodiode 10 is located on the rear side of the incident convex lens sleeve 9, receiving the focused light from the incident convex lens sleeve 9 to detect the stability of the energy intensity of the light source 11. Specifically, the beam splitter 8 can be designed as follows: including a lens base 81, a light-transmitting window 82 opened on the lens base 81, and a reflector 83 used to partially block the light-transmitting window 82. The reflector 83 usually only needs to block the lower third of the light-transmitting window 82.

[0017] The working principle of this testing agency is as follows:

[0018] When the light source 11 emits fluorescence, it obtains a light band of a set wavelength through the grating 2, passes through the slit 12, and then enters the monitoring room 4 through the light entrance window 6, and is directly incident on the beam splitter 8. Two-thirds of the fluorescence passes through the light transmission window 82, passes through the beam splitter 8, and then passes through the light exit window 7 to the subsequent detection slot 3 for fluorescent substance detection. The remaining one-third of the fluorescence is reflected by the reflector of the beam splitter 8 to the incident convex lens sleeve 9 and then to the silicon photodiode 10. The silicon photodiode 10 detects the energy intensity of the light source 11 in real time, thereby realizing the online detection of the stability of the light source 11.

[0019] However, those skilled in the technical field should realize that the above embodiments are only used to illustrate the utility model, and are not used as a limitation on the utility model, and as long as the changes and variations of the above described embodiments are within the scope of the utility model, they will fall within the scope of the utility model claims.

Claims

1. A light source stability detection mechanism characterized by comprising: The monitoring chamber has: a beam splitter capable of transmitting part of the light emitted by the light source into the fluorescence for subsequent substance detection and reflecting the rest of the light; an incident convex lens sleeve arranged on the side of the beam splitter, receiving the emitted fluorescence of the beam splitter and condensing the light; a silicon photocell arranged on the back side of the incident convex lens sleeve, receiving the condensed light of the incident convex lens sleeve to detect whether the energy intensity of the light source is stable.

2. The light source stability detection mechanism according to claim 1, characterized by: The beam splitter comprises a mirror seat, a light transmission window arranged on the mirror seat, and a reflection plate used to shield part of the light transmission window.

3. The light source stability detection mechanism according to claim 2, characterized by: The reflection plate shields the lower third of the light transmission window.

4. The light source stability detection mechanism according to claim 1, characterized by: The monitoring chamber is surrounded by a light shield plate to form a light shield chamber, and an incident light window and an outgoing light window are respectively arranged on the front side and the back side.

Images