CN204694628U - A kind of proportional double light beam spectrophotometric meter device - Google Patents
A kind of proportional double light beam spectrophotometric meter device Download PDFInfo
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- CN204694628U CN204694628U CN201520439222.3U CN201520439222U CN204694628U CN 204694628 U CN204694628 U CN 204694628U CN 201520439222 U CN201520439222 U CN 201520439222U CN 204694628 U CN204694628 U CN 204694628U
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Abstract
The utility model discloses a kind of proportional double light beam spectrophotometric meter device, comprise light source and detect light path and sample detection light path through the orthogonal reference that beam splitter is formed, described light source is monochromatic source, described sample detection light path comprise be arranged on beam splitter rear and set gradually along sample light injection direction the first light source screening washer, absorption of sample pond and the first detecting device; Described reference detects light path and comprises the secondary light source screening washer and the second detecting device that are arranged on and set gradually along reference light injection direction above beam splitter.The utility model simplifies light path, decreases and detects the energy loss of light, has that structure is simple, volume is little, easy maintenance, with low cost, accuracy of detection is high and the feature of good stability.
Description
Technical field
The utility model relates to field of analytic instrument, particularly a kind of proportional double light beam spectrophotometric meter.
Background technology
Spectrophotometric method is the analytical approach set up the selective absorbing of light based on material, comprises colourimetry, UV-VIS spectrophotometry and infra-red sepectrometry etc.Ultraviolet-visible spectrophotometer is the various all purpose instruments relating to water and waste water analysis field, and range of application comprises city and to have stable political situation industrial waste water, potable water, process water, surface water, chilled water and boiler feedwater etc.The type of ultraviolet-visible spectrophotometer is a lot, can be summarized as three types: single beam spectrophotometer, double beam spectrophotometer and dual-wavelength spectrophotomer.Wherein proportional double light beam spectrophotometric meter application is as extensive, its principle of work is that monochromatic light is after beam splitter, advance along former track in one tunnel (sample detection light path), another road (reference detection light path) 90 ° of reflections in spectroscope place, arrive respective detection system, it is mutually vertical that sample detection light path and reference detect light path.Single beam spectrophotometer compared by double beam spectrophotometer, can overcome the instability of light source and optics and electronics components and parts to two unbalanced impacts of light path, thus improve the stability of instrument.
Chinese patent CN2699288Y discloses a kind of proportional double light beam spectrophotometric meter, the monochromatic light penetrated from monochromator exit slit is divided into two-way light through spectroscope, one tunnel is sample detection light path, and light directly enters detecting device by former route through lens, absorption of sample pond and lens through spectroscope; Another road is that reference detects light path, and light is after the reflection of 90 °, spectroscope, and enter detecting device with original optical path vertical direction through lens, reference absorption cell and lens, the testing result of two detecting devices shows after signal transacting again.But because the optical mirror slip in this photometer is many, sample detection light path and reference detect light path to be needed just can enter detecting device after lens multiple reflections, not only affects testing result but also complex structure.
Summary of the invention
The utility model technical issues that need to address are to provide that a kind of structure is simple, accuracy of detection is high and the proportional double light beam spectrophotometric meter device of good stability.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of proportional double light beam spectrophotometric meter device, comprise light source and detect light path and sample detection light path through the orthogonal reference that beam splitter is formed, described light source is monochromatic source, described sample detection light path comprise be arranged on beam splitter rear and set gradually along sample light injection direction the first light source screening washer, absorption of sample pond and the first detecting device; Described reference detects light path and comprises the secondary light source screening washer and the second detecting device that are arranged on and set gradually along reference light injection direction above beam splitter.
Aforementioned proportion double beam spectrophotometer device, described first light source screening washer and secondary light source screening washer are optical filter.
Owing to have employed above technical scheme, acquired by the utility model, technical progress is as follows.
The utility model simplifies light path, decreases and detects the energy loss of light, have that structure is simple, volume is little, easy maintenance, feature with low cost.Light path part structure of the present utility model is simple, and the light source entering detection system can be made constant single, improves the Photometric Accuracy of instrument, accuracy of detection is high, luminosity is repeated, baseline straightening degree and stability; Utilize light source screening washer to carry out programmed screening to monochromatic light simultaneously, remove other impurity light, make light purer, reduce the interference to light path.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1. monochromatic source, 2. sample detection light path, 3. reference detects light path, 4. beam splitter, 5. the first light source screening washer, 6. absorption of sample pond, 7. the first detecting device, 8. secondary light source screening washer, 9. the second detecting device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
A kind of proportional double light beam spectrophotometric meter device, its structure as shown in Figure 1, comprises light source, beam splitter 4, sample detection light path 2 and reference and detects light path 3, and it is mutually vertical that sample detection light path 2 and reference detect light path 3.The light of light source injection is divided into reference to detect light and sample detection light through beam splitter, and reference detects light and advances in reference detection light path, and sample detection light is advanced in sample detection light path.
Light source of the present utility model adopts monochromatic source, and monochromatic source is used for the higher detection light of output stability.
Sample detection light path of the present utility model comprises the first light source screening washer 5, absorption of sample pond 6 and the first detecting device 7, first light source screening washer 5, absorption of sample pond 6 and the first detecting device 7 are successively set on the rear of beam splitter along sample light injection direction, detect after carrying out postsearch screening to sample detection light.
Reference of the present utility model detects light path and comprises secondary light source screening washer 8 and the second detecting device 9, secondary light source screening washer 8 and the second detecting device 9 are successively set on the top of beam splitter along reference light injection direction, detect for detecting reference after light carries out postsearch screening.
In the present embodiment, the first light source screening washer 5 and secondary light source screening washer 8 all adopt optical filter, for carrying out programmed screening to monochromatic light, removing other impurity light, making light purer, reduce the interference to the interference, particularly heavy metal measuring the factor.
Principle of work of the present utility model is: the monochromic beam penetrated from monochromatic source 1, and be divided into two road light through beam splitter 4, a road light is sample detection light, and another road is that reference detects light.Sample detection light filters out best sample by former route through the first light source screening washer 5 and detects light, and best sample detection light enters the first detecting device 7 and detects behind absorption of sample pond 6; It is that monochromatic light is formed after beam splitter 90 ° reflection that reference detects light, and it is vertical with original optical path direction that reference detects light, and reference detection light enters the second detecting device 9 and detects after secondary light source screening washer 8 screens.
The utility model can work in coordination with that the testing result of optical detection system to the testing result of the first detecting device and the second detecting device processes, Analysis and judgments, and shows.
Claims (2)
1. a proportional double light beam spectrophotometric meter device, comprise light source and detect light path (3) and sample detection light path (2) through the orthogonal reference that beam splitter (4) is formed, it is characterized in that: described light source is monochromatic source, described sample detection light path (2) comprise be arranged on beam splitter rear along sample light injection direction set gradually the first light source screening washer (5), absorption of sample pond (6) and the first detecting device (7); Described reference detects light path (3) and comprises the secondary light source screening washer (8) and the second detecting device (9) that are arranged on and set gradually along reference light injection direction above beam splitter.
2. a kind of proportional double light beam spectrophotometric meter device according to claim 1, is characterized in that: described first light source screening washer (5) and secondary light source screening washer (8) are optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439222.3U CN204694628U (en) | 2015-06-25 | 2015-06-25 | A kind of proportional double light beam spectrophotometric meter device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439222.3U CN204694628U (en) | 2015-06-25 | 2015-06-25 | A kind of proportional double light beam spectrophotometric meter device |
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| CN204694628U true CN204694628U (en) | 2015-10-07 |
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| CN201520439222.3U Active CN204694628U (en) | 2015-06-25 | 2015-06-25 | A kind of proportional double light beam spectrophotometric meter device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144527A (en) * | 2017-06-12 | 2017-09-08 | 智慧盈通（北京）工业技术有限公司 | Detection device and the light source light splitting body and photometric detection module for it |
| CN108693128A (en) * | 2018-06-22 | 2018-10-23 | 无锡天创伟业科技有限公司 | A kind of New Type Proportional double beam spectrophotometer |
| CN109916813A (en) * | 2019-03-16 | 2019-06-21 | 苏州雷博亚仪器有限公司 | A kind of nephelometric analysis light path device |
-
2015
- 2015-06-25 CN CN201520439222.3U patent/CN204694628U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144527A (en) * | 2017-06-12 | 2017-09-08 | 智慧盈通（北京）工业技术有限公司 | Detection device and the light source light splitting body and photometric detection module for it |
| CN107144527B (en) * | 2017-06-12 | 2023-11-10 | 智慧盈通（北京）工业技术有限公司 | Detection equipment and light source spectroscope and luminosity detection module used for same |
| CN108693128A (en) * | 2018-06-22 | 2018-10-23 | 无锡天创伟业科技有限公司 | A kind of New Type Proportional double beam spectrophotometer |
| CN109916813A (en) * | 2019-03-16 | 2019-06-21 | 苏州雷博亚仪器有限公司 | A kind of nephelometric analysis light path device |
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