CN202126399U - Zero adjustment screw of handheld refraction instrument - Google Patents
Zero adjustment screw of handheld refraction instrument Download PDFInfo
- Publication number
- CN202126399U CN202126399U CN2011202043198U CN201120204319U CN202126399U CN 202126399 U CN202126399 U CN 202126399U CN 2011202043198 U CN2011202043198 U CN 2011202043198U CN 201120204319 U CN201120204319 U CN 201120204319U CN 202126399 U CN202126399 U CN 202126399U
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- China
- Prior art keywords
- adjustment screw
- handheld
- hand
- zero adjustment
- zero
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a zero adjustment screw of a handheld refraction instrument. A refraction prism, a light inlet board, a rubber sleeve, an eye lens and the zero adjustment screw are respectively arranged on the handheld refraction instrument. The upper portion of the zero adjustment screw is a rotary part, and the lower portion of the zero adjustment screw is connected onto the handheld refraction instrument. The zero adjustment screw of the handheld refraction instrument can carry out accurate adjustment to enable light divide and dark divide to be at a zero position, thereby being convenient in adjustment, high in measuring accuracy, low in price, simple in structure, small in volume and the like.
Description
Technical field
The utility model relates to precision optical instrument, is specifically related to a kind of hand-hold refractometer zero correction screw.
Background technology
A kind of detecting instrument that manufactures according to optical principle of refractometer; Its kind is a lot.Wherein, the application with hand-hold refractometer is the most extensive.It is according to optical principle, and the refractive index after light is through solution and the concentration of its solution have a kind of corresponding relation, shows a kind of hand-held tester device that the concentration of measurement solution manufactures through conversion then; At first drips of solution is being reflected Ling Jingshang; Flatten through the plate lid then, make solution be uniformly distributed in the Ling Jing surface, and dashboard is covered alignment light source; Produce optical effects such as refraction and diffusion; The user reads the numerical value on the scale mark through eyepiece, after the unit amount of scale mark calculates according to optical principle and mathematical theory precision, draws the actual numerical value of the content of material of surveying.So, when using hand-hold refractometer, when adjusting screw can accurately not be adjusted to zero-bit, make data measured inaccurate, influence actual value.
The utility model content
The problem that the utility model will solve provides the high hand-hold refractometer zero correction screw of a kind of accuracy.
For addressing the above problem; The utility model is realized through following scheme: a kind of hand-hold refractometer zero correction screw; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing, advance tabula rasa, rubber sleeve and eyepiece; On hand-hold refractometer, also be provided with the zero correction screw, described zero correction screw top is rotating part, and the lower part connects on the hand-hold refractometer body.
The utility model hand-hold refractometer zero correction screw can be regulated accurately, makes bright-dark cut place zero-bit, and is easy to adjust, and measuring accuracy is high, and cheap, simple in structure, and volume is gently little etc.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Wherein: 1, refractive power Ling Jing, 2, advance tabula rasa, 3, the zero correction screw, 4, rubber sleeve, 5, eyepiece.
Embodiment
With reference to shown in Figure 1; A kind of hand-hold refractometer zero correction screw; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing 1, advance tabula rasa 2, rubber sleeve 4 and eyepiece 5; On hand-hold refractometer, also be provided with zero correction screw 3, described zero correction screw 3 tops are rotating part, and the lower part connects on the hand-hold refractometer body.
Embodiment: when using hand-hold refractometer, hold rubber sleeve 4 with left hand, the right hand is regulated eyepiece 5, prevents that body temperature from importing instrument into; Influence measuring accuracy, open into tabula rasa 2, with refractive power Ling Jing 1 wiped clean, will distill water number again and drip with soft flannelette; Drop on the refractive power Ling Jing 1, the into tabula rasa 2 that closes gently makes solution be uniformly distributed in refractive power Ling Jing 1 surface, and instrument is entered tabula rasa 2 alignment light source or bright place; Eyes, then rotate eyepiece 5 and make the visual field clear if the visual field bright-dark cut is unclear through eyepiece 5 observation visual fields; Rotate zero correction screw 3 again, make bright-dark cut place zero-bit, clean distilled water then; Change test solution, this moment, its separatrix was looked in the visual field, and corresponding division line scale value of living in then is institute's test solution concentration value and density value.
Claims (1)
1. hand-hold refractometer zero correction screw; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing (1), advance tabula rasa (2), rubber sleeve (4) and eyepiece (5); It is characterized in that: on hand-hold refractometer, also be provided with zero correction screw (3); Described zero correction screw (3) top is rotating part, and the lower part connects on the hand-hold refractometer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202043198U CN202126399U (en) | 2011-06-16 | 2011-06-16 | Zero adjustment screw of handheld refraction instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202043198U CN202126399U (en) | 2011-06-16 | 2011-06-16 | Zero adjustment screw of handheld refraction instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126399U true CN202126399U (en) | 2012-01-25 |
Family
ID=45489464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202043198U Expired - Fee Related CN202126399U (en) | 2011-06-16 | 2011-06-16 | Zero adjustment screw of handheld refraction instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126399U (en) |
-
2011
- 2011-06-16 CN CN2011202043198U patent/CN202126399U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20130616 |