CN202126389U - Handheld type refractometer light inlet plate - Google Patents

Abstract

The utility model discloses a handheld type refractometer light inlet plate. A refraction prism, a zero position rectifying screw, a rubber sleeve and an ocular are respectively arranged on a handheld type refractometer, the light inlet plate is further arranged on the handheld type refractometer and covered on the refraction prism, and the light inlet plate is a transparent glass plate. One end of the light inlet plate is connected onto a refractometer body through a spiral button. The handheld type refractometer light inlet plate can enable light of a light source to be transmitted onto the prism to the greatest degree, measured data generated after the refraction are high in precision, one end of the light inlet plate is connected in spiral mode, and the other end of the light inlet plate can be opened and closed. The handheld type refractometer light inlet plate is low in price, simple in structure, light in volume and the like.

Description

A kind of hand-hold refractometer advances tabula rasa

Technical field

The utility model relates to precision optical instrument, is specifically related to a kind of hand-hold refractometer and advances tabula rasa.

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, a lot of on the market tabula rasas that advance are translucent glass plates, under fainter light source, can not measure numerical value clearly, influence the data result of actual measurement.

The utility model content

The hand-hold refractometer that the problem that the utility model will solve provides a kind of transparency glass plate advances tabula rasa.

For addressing the above problem; The utility model is realized through following scheme: a kind of hand-hold refractometer advances tabula rasa; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing, zero correction screw, rubber sleeve and eyepiece, on hand-hold refractometer, also be provided with into tabula rasa, saidly advance tabula rasa and cover on refractive power Ling Jing; It is said that to advance tabula rasa be transparency glass plate, this advance tabula rasa one end through the knob buckle on the refractometer body.

The utility model hand-hold refractometer advances maximum to the greatest extent being transmitted to above the Ling Jing of brightness that tabula rasa can make light source, and the data precision of measuring that its refraction back produces is high, and an end that advances tabula rasa spins; The other end is opened and is covered; And cheap, simple in structure, 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 advances tabula rasa; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing 1, zero correction screw 3, rubber sleeve 4 and eyepiece 5, on hand-hold refractometer, also be provided with into tabula rasa 2, saidly advance tabula rasa 2 and cover on refractive power Ling Jing 1; Saidly advance tabula rasa 2 and be transparency glass plate, this advance tabula rasa 2 one ends through the knob buckle on the 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. a hand-hold refractometer advances tabula rasa; On hand-hold refractometer, be respectively equipped with refractive power Ling Jing (1), zero correction screw (3), rubber sleeve (4) and eyepiece (5); It is characterized in that: on hand-hold refractometer, also be provided with into tabula rasa (2); Saidly advance tabula rasa (2) and cover on refractive power Ling Jing (1), said to advance tabula rasa (2) be transparency glass plate, this advance tabula rasa (2) one ends through the knob buckle on the refractometer body.

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