CN2526807Y - Digital display spectrophotometer - Google Patents
Digital display spectrophotometer Download PDFInfo
- Publication number
- CN2526807Y CN2526807Y CN 02215458 CN02215458U CN2526807Y CN 2526807 Y CN2526807 Y CN 2526807Y CN 02215458 CN02215458 CN 02215458 CN 02215458 U CN02215458 U CN 02215458U CN 2526807 Y CN2526807 Y CN 2526807Y
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- prism
- monochromator
- light source
- spectrophotometer
- diaphragm
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Abstract
The utility model relates to a digital display spectrophotometer which comprises a light source assembly, a monochromator and a sample box, an optical stop and a photoelectric cassette which are arranged at the right side of a monochromator front unit in sequence and a correspondent light path and a circuit. The utility model is characterized in that the light source assembly comprises a lamp holder, a light source arranged on the lamp holder, a lamp house used for collecting light form the light source and a lampshade arranged and covered outside the lamp holder and the lamp house, a prism rotating stand comprises a bottom plate, a prism shaft arranged on the bottom plate, a prism bush sleeved outside the prism shaft, balls between the prism shaft and the prism bush and a rotating stand bulkhead arranged at the upper end of the prism bush; the optical stop comprises an optical stop framework, an optical stop baseboard arranged on the optical stop framework and an optical stop blade rotatablely arranged on the optical stop framework by pins. The conjugate distance from the light source to a monochromator incident slit and the conjugate distance from an emergent slit to a photoelectric converter are shortened. Thereby, the utility model has simple and perfect structure, half-reduced volume, stable and reliable performance and reduced cost.
Description
Technical field
The utility model relates to a kind of spectrometric instrument, relates in particular to a kind of relevant chemical analysis or used digital display spectrophotometer of education experiment that is applicable to industrial and mining enterprises, health care, environment monitoring, petrochemical industry biochemistry, scientific research institution and universities and colleges.
Background technology
Spectrophotometric basic structure mainly is made up of combination of light sources, monochromator, sample box, diaphragm, photoelectricity magazine and corresponding light path and circuit.Prior art such as model are 721,722 two spectrophotometers, though can carry out spectrophotometry, have following problem in actual use:
1. photometric combination of light sources part-structure complexity.The combination of light sources of prior art partly please (shown in Figure 1A and B) be made up of lamp support 1, lamp holder head 2, trim ring 3, lamp house 4, lampshade 5, screw and packing ring 6 and 7, incandescent lamp 8, not only part is numerous, and complex process, with regard to single lamp socket (referring to shown in Figure 2) just form by a plurality of parts such as support 21, lamp holder head 22, spiral covers 23, remove car on the technology, also will weld after clamping, milling, comparatively complicated; And for example, lighting source lamp chamber part (referring to shown in Figure 3) is an aluminium casting, and the effective aperture is φ 39, but owing to the meaningless mounting hole 31 that has added 14 * 23 makes this aperture meaninglessly big; And make processing become greatly complicated thus.
2. the diaphragm part operation is dumb, even stuck to make it work unreliable.The diaphragm part of prior art adopts thimble-type (referring to shown in Figure 4) usually, by side plate 1, cover plate 2, late sheet 3, stage clip 4, thimble 5, fixedly fast 6, the diaphragm sheet rotating shaft 7 of the thimble of thimble, and tens parts such as screw and nut are formed, because dimension chain is too much, add that various mismachining tolerances, rigging error and other uncertainty cause this important component operation dumb again and again, even stuck, it is unreliable to make it work.
3. optical system is unreasonable.Conjugate distance between primary source-incident slot is 225 millimeters, 55 millimeters of the focal lengths of lens, 25 millimeters of external diameter φ, 1/2.8; Conjugate distance is 215 millimeters between outgoing slot-opto-electronic conversion, 30 millimeters of the focal lengths of lens, and 12.5 millimeters of external diameter φ, relative aperture 1/3, imaging relations is handled improperly thus, is unfavorable for test.
4. base plate is installed is not had benchmark.Confused for the designed location dimension benchmark of each parts installation on the installation base plate, tolerance is formulated arbitrarily, and pine is sternly extremely unreasonable; Simultaneously because the mounting holes that adopt, it is active adjustable to form part spare, seems and can follow one's bent more, and all convenience are lost benchmark actually, the normalizing of having no way of, thus very easily cause the serious deviation of light path and make inner structure deflection not just.
5. prism pivoted frame load-bearing, rotating speed, corner are little.As shown in Figure 6, the prism pivoted frame of installing and regulate dispersing prism in the monochromator of prior art always adopts bearing, the prism rotary frame device of bearing arrangement is made up of parts such as base plate 1, axle sleeve 2, pressing plate 3, prism bearing 4, trim ring 5, clamping ring 6, two bearings 7, make it that not only part is many, and its actual load-bearing is little, rotating speed is little, and corner is also little.
This shows that because the prior art light path is tediously long, profile is huge, deal is heavy, and adopts the 30W incandescent lamp, and it is low to make it colour temperature, and power is bigger than normal, and structure is various, and design, process and assemble benchmark are indeterminate, has therefore influenced the effect of actual use.
Summary of the invention
The purpose of this utility model is to provide a kind of improved digital display spectrophotometer, and it is more reasonable, simple in structure more perfect that it can make light path shorten, and makes it to become the brand-new miniaturization spectroscopic instruments of digital display direct-reading transmitance, absorbance and concentration.
The purpose of this utility model is achieved in that
A kind of digital display spectrophotometer comprises: a combination of light sources; One monochromator is positioned at group before the monochromator on monochromator right side, is arranged on the scale and the prism pivoted frame on monochromator top; Be successively set on sample box, diaphragm, the photoelectricity magazine on the preceding group of monochromator right side; And, corresponding light path and circuit; Be characterized in:
Described combination of light sources comprises, a lamp socket, is arranged on light source on the lamp socket, is used to collect lamp house that light source sends light, is located at lamp socket and the outer lampshade of lamp house; The described prism pivoted frame that is arranged on monochromator top comprises that the chassis is arranged on the prism axis on the chassis, is set in the outer prism axle sleeve of prism axis, the ball between prism axis and prism axle sleeve, and the pivoted frame that is arranged on the prism axis set upper side is silently; Described diaphragm comprises, the diaphragm framework is fixedly installed on the diaphragm base plate on the diaphragm framework, by the rotating diaphragm door screen sheet that is arranged on the diaphragm framework of pin.
In above-mentioned digital display spectrophotometer, wherein, described light source is 160 millimeters to conjugate distance between monochromator incident slot, 38 millimeters of the focal lengths of lens, 16 millimeters of external diameter φ, relative aperture 1: 2.5; Described monochromator outgoing slot to the photoelectricity magazine between the opto-electronic conversion conjugate distance be 185 millimeters, 18 millimeters of the focal lengths of lens, 10 millimeters of external diameter φ, relative aperture 1: 2.
In above-mentioned digital display spectrophotometer, wherein, described light source is the high and luminous strong miniwatt halogen tungsten lamp of a colour temperature.
In above-mentioned digital display spectrophotometer, wherein, described prism axis is the T word shape, and described prism axis cover inboard, top is internal shoulder, in the gap of described ball between prism axis and prism axle sleeve internal shoulder.
In above-mentioned digital display spectrophotometer, wherein, described photoelectricity magazine is the angle square formula open double-faced of being convenient to install or change internal components.
The utility model digital display spectrophotometer makes it to compare with the prior art spectrophotometer owing to adopted above-mentioned technical scheme, has following advantage and good effect:
1. combination of light sources part-structure advantages of simple.The utility model is made up of three parts owing to combination of light sources only is reduced to, and has removed the primary source " lamp house " with the big figure of mounting hole, reduced profile not only simple for structure, and work simplification, and Installation and Debugging are convenient; Simultaneously, light source adopts the miniwatt halogen tungsten lamp, the colour temperature height, and luminous intensity is big, so light-receiving is effective.
2. prism pivoted frame structure is simplified.The utility model has been simplified parts thus because the prism pivoted frame of installing and regulate dispersing prism in the monochromator is substituted bearing with ball, has reduced cost, and has simplified technology, has made things convenient for assembling.
3. the gravity type of running flexibility and reliability is from resetting diaphragm.The utility model is because brand-new design has been made gravity type from resetting diaphragm, and is not only simple, and it is latent thoroughly to have got rid of various barriers, realizes the running flexibility and reliability.
4. photoelectricity magazine size is dwindled.The utility model makes the longitudinal size of magazine dwindle half owing to will be installed in amplifying circuit in the photoelectricity magazine and be integrated on 80 * 45 the plank, simultaneously the single face opening is angle square formula open double-faced, install or the transposing internal components greatly convenient.
5. the base plate standard is accurate.The utility model back-plane design is a benchmark with the monochromator axis clearly, and design, process and assemble benchmark strict conformance are received the tolerance of tight benchmark location dimension, accomplishes that pine is tight suitable, guarantees that the standard of system light path operation is accurate.
6. the optical system of brand-new design.The utility model is owing to be 160 millimeters with conjugate distance between light source-incident slot, conjugate distance reduces to 185 millimeters between outgoing slot-opto-electronic conversion, make the utility model put in order reduced profile, improved the efficiency of light energy utilization of system, make complete machine optical system integration symbol image-forming principle, guarantee the effective accuracy of line falling chromatic dispersion.
Description of drawings
To the description of the spectrophotometric embodiment of the utility model digital display, can further understand the purpose of this utility model, specific structural features and advantage by following in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 (A) is a light source combination sturcture synoptic diagram in the prior art spectrophotometer;
Fig. 1 (B) is the side-looking structural representation of Fig. 1 (A);
Fig. 2 (A) (B) (C) is the structural representation of lamp socket support, lamp holder head, spiral cover in the prior art spectrophotometer combination of light sources;
Fig. 3 is the structural representation of lighting source lamp chamber in the prior art spectrophotometer;
Fig. 4 (A) is the structural representation of diaphragm part in the prior art spectrophotometer;
Fig. 5 (A) is the structural representation of photoelectricity magazine part in the prior art spectrophotometer;
Fig. 6 is the structural representation of prior art spectrophotometer centre bearer prism pivoted frame part;
Fig. 7 is according to the spectrophotometric decomposition texture synoptic diagram of digital display that the utility model proposes;
Fig. 8 is the structural representation of ball prism pivoted frame part in the utility model digital display spectrophotometer;
Fig. 9 is the structural representation of gravity type runback diaphragm part in the utility model digital display spectrophotometer;
Figure 10 is the structural representation of the photoelectricity magazine part of angle square formula open double-faced in the utility model digital display spectrophotometer.
Embodiment
See also shown in Figure 7, the utility model digital display spectrophotometer, comprise, one combination of light sources, 100, one monochromators 200, this monochromator 200 organize 210 before comprising the monochromator that is positioned at its right side, be arranged on the scale 220 and the prism pivoted frame 230 on monochromator 200 tops, be successively set on sample box 300, diaphragm 400, the photoelectricity magazine 500 on the preceding group of monochromator 210 right sides, and, corresponding light path and circuit.With model commonly used at present is that 721,722 two spectrophotometers are compared, and is characterized in:
See also shown in Figure 7, described combination of light sources 100 is simple for structure, this combination of light sources 100 comprises, one lamp socket 110, be arranged on the light source 120 on the lamp socket 110, in the present embodiment, this light source 120 adopts the high and luminous strong miniwatt halogen tungsten lamp of a colour temperature, one to be used to collect light source 120 be the lamp house 130 that the miniwatt halogen tungsten lamp sends light, is located at the outer lampshade 140 of lamp socket 110 and lamp house 130.Because combination of light sources 100 only three parts is formed, and has removed the primary source " lamp house " with the big figure of mounting hole, not only profile obtains bigger dwindling, and makes it technology and simplify and made things convenient for Installation and Debugging greatly.
Please in conjunction with Fig. 7 referring to shown in Figure 8, the described prism pivoted frame 230 that is arranged on monochromator 200 tops comprises, chassis 231, be arranged on the prism axis 232 on the chassis 231, be set in the prism axle sleeve 233 outside the prism axis 232, ball 234 between prism axis 232 and prism axle sleeve 233, the pivoted frame that is arranged on prism axle sleeve 233 upper ends silently 235; In the present embodiment, prism axis 232 adopts the T word shapes, and what adapt with it is, the 233 upper inner settings of prism axle sleeve are internal shoulder 2331, and described ball 234 is just in the gap between prism axis 232 and prism axle sleeve 233 internal shoulders 2331.Parts have not only been simplified in this setting with the alternative bearing of ball, reduced cost, and effect are identical.
Please in conjunction with Fig. 7 referring to shown in Figure 9, described diaphragm 400 comprises, diaphragm framework 410 is fixedly installed on diaphragm base plate 420, the one diaphragms door screens sheet 440 on the diaphragm framework 410, this diaphragm door screen sheet 440 is by pin 430 rotatable being arranged on the diaphragm framework 410; When allowing measuring light to see through sample box 300 windows 310, gently diaphragm door screen sheet 440 upper ends 441 are stirred downwards, just opened sample box 300 windows 310, when need are closed sample box 300 windows 310, remove pressure to diaphragm door screen sheet 440 upper ends 441, diaphragm door screen sheet 440 relies on its gravity to move down, and has just covered sample box 300 windows 310, this shows, the gravity type of brand-new design is from resetting diaphragm, not only simple, and it is latent thoroughly to have got rid of various barriers, realizes the running flexibility and reliability.
Please in conjunction with Fig. 7 referring to shown in Figure 10, described photoelectricity magazine 500 is provided with and is the angle square formula open double-faced 510,520 of being convenient to install or change internal components, the longitudinal size of magazine has dwindled half, simultaneously former single face opening is angle square formula open double-faced, and installation or transposing internal components are greatly convenient.
See also shown in Figure 7, in the utility model, light source 120 to conjugate distance between monochromator 200 incident slots 240 is set to 160 millimeters, be set to 185 millimeters in monochromator 200 outgoing slots 250 to conjugate distance between the opto-electronic conversion, shortened conjugate distance from, make the whole profile of new photometer little such week of nearly ten minutes centimetre, and its important technology index " relative aperture " increases on the contrary-bring up to 1/2.5 and 1/2 respectively from 1/28 and 1/3, improved the efficiency of light energy utilization of system so, greatly; The more important thing is, complete machine optical system integration symbol image-forming principle, thoughtful again comprehensively to the correction of various aberrations, strict and reasonable; And guarantee the effective accuracy of line falling chromatic dispersion.
In sum, the utility model digital display spectrophotometer is compared with the prior art spectrophotometer, also has its distinct advantages:
A. no matter greatly condense idle space, be volume or deadweight, all reduces half;
B. power significantly reduces, and energy consumption reduces greatly, is only energy-saving kind in the current photometric meter. Heat obviously weakens simultaneously, has improved instrument self working environment;
C. very ripe chromatic dispersion technology is guaranteed the accurate, stable and reliable of instrument work; The digital display direct-reading Complete function, and provide the user to assist speed and facility;
The D cost descends. The new overall cost of miniaturization photometer on average descends 40%, directly brings the user's It is the high-performance price.
Claims (5)
1. digital display spectrophotometer comprises:
One combination of light sources (100);
One monochromator (200) is positioned at group (210) before the monochromator on monochromator (200) right side, is arranged on the scale (220) and the prism pivoted frame (230) on monochromator (200) top;
Be successively set on sample box (300), diaphragm (400), the photoelectricity magazine (500) on the preceding group of monochromator (210) right side;
And, corresponding light path and circuit; It is characterized in that:
Described combination of light sources (100) comprises, a lamp socket (110), is arranged on light source (120) on the lamp socket (110), is used to collect lamp house (130) that light source (120) sends light, is located at lamp socket (110) and the outer lampshade (140) of lamp house (130);
The described prism pivoted frame (230) that is arranged on monochromator (200) top comprises, chassis (231), be arranged on the prism axis (232) on the chassis (231), be set in the outer prism axle sleeve (233) of prism axis (232), be positioned at the ball (234) between prism axis (232) and the prism axle sleeve (233), the pivoted frame that is arranged on prism axle sleeve (233) upper end is (235) silently;
Described diaphragm (400) comprises, diaphragm framework (410) is fixedly installed on the diaphragm base plate (420) on the diaphragm framework (410), by the rotating diaphragm door screen sheet (440) that is arranged on the diaphragm framework (410) of pin (430).
2. digital display spectrophotometer as claimed in claim 1 is characterized in that: conjugate distance is 160 millimeters to described light source (120) between monochromator (200) the incident slot (240) to being positioned at, 38 millimeters of the focal lengths of lens, 16 millimeters of external diameter φ, relative aperture 1: 2.5; Described monochromator (200) the outgoing slot (250) that is arranged in is 185 millimeters to conjugate distance between photoelectricity magazine (500) opto-electronic conversion, 18 millimeters of the focal lengths of lens, 10 millimeters of external diameter φ, relative aperture 1: 2.
3. digital display spectrophotometer as claimed in claim 1 is characterized in that: described light source (120) is the high and luminous strong miniwatt halogen tungsten lamp of a colour temperature.
4. digital display spectrophotometer as claimed in claim 1, it is characterized in that: described prism axis (232) is the T word shape, described prism axle sleeve (233) upper inner is internal shoulder (2331), and described ball (234) is arranged in the gap between prism axis (232) and prism axle sleeve (233) internal shoulder (2331).
5. digital display spectrophotometer as claimed in claim 1 is characterized in that: described photoelectricity magazine (500) is the angle square formula open double-faced (510,520) of being convenient to install or change internal components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215458 CN2526807Y (en) | 2002-01-30 | 2002-01-30 | Digital display spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02215458 CN2526807Y (en) | 2002-01-30 | 2002-01-30 | Digital display spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526807Y true CN2526807Y (en) | 2002-12-18 |
Family
ID=33694590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02215458 Expired - Fee Related CN2526807Y (en) | 2002-01-30 | 2002-01-30 | Digital display spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526807Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408989C (en) * | 2005-04-08 | 2008-08-06 | 中国科学院半导体研究所 | Structure for decreasing stray light in spectrum instrument |
| CN101393117B (en) * | 2007-09-20 | 2011-05-04 | 株式会社岛津制作所 | Spectrophotometer |
| CN113466163A (en) * | 2021-07-30 | 2021-10-01 | 谢江湖 | High accuracy water quality testing appearance |
-
2002
- 2002-01-30 CN CN 02215458 patent/CN2526807Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408989C (en) * | 2005-04-08 | 2008-08-06 | 中国科学院半导体研究所 | Structure for decreasing stray light in spectrum instrument |
| CN101393117B (en) * | 2007-09-20 | 2011-05-04 | 株式会社岛津制作所 | Spectrophotometer |
| CN113466163A (en) * | 2021-07-30 | 2021-10-01 | 谢江湖 | High accuracy water quality testing appearance |
| CN113466163B (en) * | 2021-07-30 | 2023-01-17 | 珠海市亿耀技术有限公司 | High accuracy water quality testing appearance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |