CN2612934Y

CN2612934Y - Portable photometer

Info

Publication number: CN2612934Y
Application number: CN 03244339
Authority: CN
Inventors: 马放均; 梁朝辉; 张伟峰
Original assignee: Beijing Purkinje General Instrument Co Ltd
Current assignee: Beijing Purkinje General Instrument Co Ltd
Priority date: 2003-04-30
Filing date: 2003-04-30
Publication date: 2004-04-21
Anticipated expiration: 2013-04-30

Abstract

The utility model discloses a portable photometer, which comprises a shell, a light source, a monochromatic device, a control device and a touching display screen. The light source and the monochromatic device are equipped in the shell, the touching display screen is equipped on the outer surface of shell. The utility model has the advantages of small volume, rapid measuring speed and convenient control.

Description

Portable luminosity meter

Technical field

The utility model relates to a kind of optical instrument, particularly a kind of photometer that can be convenient for carrying.

Background technology

At present, photometer of the prior art includes control device, light source, monochromator.Wherein, light source is made up of deuterium lamp and tungsten lamp; Monochromator includes parts such as rotary type reflective mirror, grating and driver part, front and back reflective mirror, color filter converting member, collimator objective, reflective mirror, sample cell and receiver.During this photometer work, after control device carries out self check to control circuit and each parts, pass the color filter converting member through preceding reflective mirror, grating and driver part and rear reflector after the light reflection of successively deuterium lamp and tungsten lamp being sent by the rotary type reflective mirror and arrive reflective mirror, inject sample cell through collimator objective then, the transmittance sample cell is received by receiver after mirror reflects, finishes conversion of signals and finishes data processing by control circuit.

The shortcoming that above prior art exists is:

1, these photometer parts are various and a plurality of parts are arranged by step motor drive, not only make photometric complex structure, bulky, and make photometric measuring speed very slow.

2, the light that sends of light source is rotated by the step motor drive grating, isolates and analyzes needed specific wavelength, can only carry out single wavelength measurement at every turn.

3, this photometric control circuit complexity, power consumption are big.

The utility model content

The purpose of this utility model is to overcome deficiency of the prior art, provides that a kind of volume is little, measuring speed is fast and the portable easily luminosity meter of control.

The technical solution adopted in the utility model is: a kind of portable luminosity meter, include housing, light source, monochromator, control device and touch display screen, and described light source, monochromator are installed in the described housing, and described touch display screen is located at the outside surface of this housing; Described monochromator includes shell, entrance slit, concave surface flat field grating and electrooptical device, entrance slit is located on the sidewall of shell, concave surface flat field grating is relative with the position of entrance slit, and the central axis of the two is formed with angle, and described electrooptical device is arranged on the focal plane of described concave surface flat field grating; Described entrance slit includes optical fiber head, multi-strand optical fiber and incident joint; On this optical fiber head, have a penetrating slit, have through hole on the described incident joint, one end of described multi-strand optical fiber fixedly assign in the above-mentioned slit and between the per share light transmitting fiber single file be arranged in parallel, its other end passes the through hole of incident joint, optical fiber head is installed on its sidewall by the through hole on the housing, makes multi-strand optical fiber extend to the outside of housing; Described light source includes shell body, and tungsten lamp, collector lens, transmission-type deuterium lamp, front lens, rear lens and fiber coupler are installed in the shell body successively, and the center of above-mentioned each parts is on the same straight line, and fiber coupler links to each other with multi-strand optical fiber; The connecting portion of shell body passes the through hole that has on the sidewall of housing makes the multi-strand optical fiber that links to each other with fiber coupler extend to outside; Described control device includes single-chip microcomputer, storer, described light source, described electrooptical device are connected with this single-chip microcomputer respectively, described touch display screen is connected with this single-chip microcomputer and is connected with power circuit with touch controller respectively by integrated drive electronics, and this touch controller is connected with described single-chip microcomputer; Power circuit links to each other with AC power with this single-chip microcomputer again respectively.

The utility model adopts in monochromator in the concave surface flat field grating, with electrooptical device (CCD or PDA) that linear array or face battle array are arranged is receiver, each spectral scan time is 50ms, with the spectral scan time reduced in comparison of monochromator of the prior art more than 1000 times, simplified the monochromator light path greatly, and adopt the one light source make the utility model volume little, be convenient for carrying.

Description of drawings

Figure 1A, Figure 1B are the structural representation of the portable luminosity meter of the utility model;

Fig. 2 is the structural representation of monochromator among Figure 1A, Figure 1B;

Fig. 3 is the structural representation of entrance slit among Fig. 2;

Fig. 4 is that the B of Fig. 3 is to view;

Fig. 5 is that the A of Fig. 3 is to view;

Fig. 6 is the structural representation of light source among Figure 1A, Figure 1B;

Fig. 7 is the theory diagram of control device among Figure 1A, Figure 1B.

Embodiment

Specify the utility model below in conjunction with accompanying drawing

The utility model includes housing 9, light source 1, monochromator 8, control device 7 and touch display screen 2 shown in Figure 1A, Figure 1B; Light source 1, monochromator 8 are installed in the housing 9, are provided with touch display screen 2 at the outside surface of housing 9.

Monochromator 8 includes shell 81, concave surface flat field grating 83, electrooptical device 84 and entrance slit 82.Entrance slit 82 includes optical fiber head 823, multi-strand optical fiber 822 and incident joint 821, has a penetrating slit on optical fiber head 823, has through hole on the incident joint 821; One end of multi-strand optical fiber 822 fixedly assign in the above-mentioned slit and between the per share light transmitting fiber single file be arranged in parallel, the other end of multi-strand optical fiber 822 passes the through hole of incident joint 821; Incident joint 821 is installed on the sidewall of shell 81, and optical fiber head 823 is installed on its sidewall by the through hole on the housing 9, makes multi-strand optical fiber extend to the outside of housing 9.Concave surface flat field grating 83 is installed in the shell 81, and is relative with the position of entrance slit 82, and the central axis of the two is formed with angle.Electrooptical device 84 can be linear array electrooptical device (CCD) or face battle array electrooptical device (PDA), and it is arranged on the focal plane of concave surface flat field grating 83 as receiver.In addition, can optical filter 85 be installed in the front of electrooptical device 84, through the beam split of concave surface flat field grating 83, transmission filter 85 can be received by electrooptical device 84 by the elimination parasitic light after the light of incident enters monochromator 8.

Light source 1 includes tungsten lamp 12, collector lens 13, transmission-type deuterium lamp 14, front lens 15, sample cell 16, rear lens 17 and fiber coupler 18, above-mentioned each parts are installed successively and the center is on the same straight line, wherein tungsten lamp 12, collector lens 13, transmission-type deuterium lamp 14 and front lens 15 are installed in the shell body 11, and fiber coupler 18 links to each other with multi-strand optical fiber.The connecting portion 19 of light source 1 by shell body 11 passes the through hole that has on the sidewall of housing 9 makes the multi-strand optical fiber that links to each other with fiber coupler 18 extend to housing 9 outsides.

As shown in Figure 7, control device 7 includes single-chip microcomputer, the electrooptical device 84 of storer, light source 1, monochromator 8 is connected with single-chip microcomputer respectively, touch display screen 2 is connected with single-chip microcomputer by integrated drive electronics, and be connected with power circuit with touch controller respectively, wherein, power circuit is an integrated module, and touch controller is connected with single-chip microcomputer; Power circuit links to each other with AC power with single-chip microcomputer again respectively, for further improve the utility model easily under various working environments use can also make power circuit be connected with battery pack 33, make it can operate as normal under the environment of AC-less power.In addition, can also on single-chip microcomputer, be connected with an outside extended memory, strengthen the stores processor function of the utility model data.

The course of work of the present utility model is as follows:

At first, start the utility model by touch display screen 2, battery pack 33 or AC power are powered to each parts by power circuit.Single-chip microcomputer sends instruction to power supply 1, and tungsten lamp 12 and transmission-type deuterium lamp 14 are simultaneously luminous, and the light that tungsten lamp 12 sends mixes with the light that transmission-type deuterium lamp 14 sends by collector lens 13.This mixed light is injected sample cell 16 through front lens 15, light is passed by sample cell 16, inject fiber coupler 18 through rear lens 17, by multi-strand optical fiber photoconduction is gone out, import light into entrance slit 82, light is mapped on the concave surface flat field grating 83 by incident joint 821, is received by electrooptical device 84 after the beam split through concave surface flat field grating 83.Electrooptical device 84 is converted into corresponding electric signal input single-chip microcomputer with the light signal that receives, and by single-chip microcomputer this electric signal is converted into data storage back in the storer its further analysis is presented at it on touch display screen 2 after obtaining analysis result.

Claims

1, a kind of portable luminosity meter, include housing, light source, monochromator and control device, it is characterized in that: this photometer also includes touch display screen (2), described light source (1), monochromator (8) are installed in the described housing (9), and described touch display screen (2) is located at the outside surface of this housing (9);

Described monochromator (8) includes shell (81), entrance slit (82), concave surface flat field grating (83) and electrooptical device (84), entrance slit (82) is located on the sidewall of shell (81), concave surface flat field grating (83) is relative with the position of entrance slit (82), and the central axis of the two is formed with angle, and described electrooptical device (84) is arranged on the focal plane of described concave surface flat field grating (83); Described entrance slit (82) includes optical fiber head (823), multi-strand optical fiber (822) and incident joint (821); On this optical fiber head (823), have a penetrating slit, have through hole on the described incident joint (821), one end of described multi-strand optical fiber (822) fixedly assign in the above-mentioned slit and between the per share light transmitting fiber single file be arranged in parallel, its other end passes the through hole of incident joint (821), optical fiber head (823) is installed on its sidewall by the through hole on the housing (9), makes multi-strand optical fiber (822) extend to the outside of housing (9);

Described light source (1) includes tungsten lamp (12), collector lens (13), transmission-type deuterium lamp (14), front lens (15), sample cell (16), rear lens (17) and fiber coupler (18), above-mentioned each parts are installed successively and the center is on the same straight line, and fiber coupler (18) links to each other with multi-strand optical fiber; The connecting portion of the shell body (11) of described light source (1) passes the through hole that has on the sidewall of housing (9) makes the multi-strand optical fiber that links to each other with fiber coupler (18) extend to housing (9) outside;

Described control device (7) includes single-chip microcomputer, storer, described light source (1), described electrooptical device (84) are connected with this single-chip microcomputer respectively, described touch display screen (2) is connected with this single-chip microcomputer and is connected with power circuit with touch controller respectively by integrated drive electronics, and this touch controller is connected with described single-chip microcomputer; Power circuit links to each other with AC power with this single-chip microcomputer again respectively.

2, portable luminosity meter as claimed in claim 1 is characterized in that: be connected with an outside extended memory on the described single-chip microcomputer.

3, portable luminosity meter as claimed in claim 1, it is characterized in that: described power circuit is connected with battery pack (33).

4, portable luminosity meter as claimed in claim 1, it is characterized in that: described electrooptical device (84) is the linear array electrooptical device.

5, portable luminosity meter as claimed in claim 1 is characterized in that: described electrooptical device (84) is a face battle array electrooptical device.