BK7 Optical Lens

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Loading Port:: China Main Port

Payment Terms:: TT or LC

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Supply Capability:: 1000 Pieces per Day week pc/month

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Introduction of BK7 Optical Lens

Our standard lens has the following specifications:

Material: grade A BK7, fused silica, sapphire, or CaF2

Diameter tolerance: +0.0, -0.12mm

Paraxial focal length tolerance: ±2%

Centralization: 3arcmin

Clear aperture: >85%

Surface figure: 1/2 at 632.8nm!

Q: Chemical materials and additives needed for the production of glass: Production process of 1.3.1 glass1. Raw material pretreatment. The bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) grinding, so that dry wet raw materialsDry, iron containing raw materials for iron removal, in order to ensure the quality of glass.2, batch preparation. According to the product, the composition of the mixture is slightly different. For example, ordinary float glass batch (calculated in accordance with 1 weight boxes of 50 kilograms), need to consume 33.55 kg of quartz sand, limestone, dolomite, 2.96 kg 8.57 kg 11.39 kg of soda, Glauber's salt 0.55 kg, 3.45 kg, 0.03 kg of feldspar powder etc..3, melting. The glass mixture is heated in a bath or crucible furnace at a high temperature (1550-1600 degrees) to form a liquid glass that is uniform, free of bubbles and conforms to the molding requirements.

Q: Is toughened glass dish loaded with food harmful to human body?: The main chemical composition of glass products is silicon dioxide, sodium oxide, calcium oxide and other inorganic compounds, the precipitates of tableware national limit has strict rules, regular production of glass tableware, kitchenware is not harmful to humans, so consumers do not have to worry about the basic glass tableware utensils will cause harm to food safety. Daily exposure of glass tableware from the material can be divided into sodium, calcium, glass, that is, ordinary glass, borosilicate glass, lead crystal glass, glass ceramics.

Q: What kind of glass is alkali free high borosilicate?: At present, abroad can produce high quality non alkali borosilicate glass company, Corelle, the German Schott companies, domestic Changsha have a precision glass raw material sales, precision glass processing company, alkali borosilicate glass, Schott two sales of Corelle company.

Q: What's the name of the transparent plastic board in the market?: Organic glass acrylic and special processing, organic glass products, light boxes with acrylic production has good transparence, pure color, rich colors, beautiful smooth, both day and night of two kinds of effect, long service life, does not affect the use of other features, in addition, acrylic and aluminum plate material, advanced screen printing etc. can be the perfect combination, to meet the business needs of acrylic plastic is to improve the store level business, unified enterprise image of the best form of outdoor advertising.

Q: What is a hollow glass?: Hollow glass is composed of two or more pieces of glass, the glass by the internal filling the hollow aluminum isolation desiccant, and the hollow part filled with dry air or inert gas, and sealed with butyl rubber, polysulfide rubber or plastic structure, forming a dry space glass.

Q: The main reasons for failure of air glass are outlined: The production of hollow glass raw material quality; key factors affect the service life of hollow glass sealant is ageing resistance and desiccant adsorption capacity, and the determining factor is the performance of sealant. Because no matter how much the desiccant adsorption capacity, inside the hollow glass after a certain limit, when the hollow glass desiccant completely saturated, again good desiccant also unable to water vapor adsorption, then the hollow glass is invalid. Only when the sealant has good sealing performance, moisture permeability coefficient is low, the amount of water vapor into the hollow glass rarely, and keep this state, only rarely can guarantee the hollow glass desiccant inside gas drying, so as to ensure the effect of hollow glass. To keep the sealant unchanged for a long time, it must require the sealant has good anti-aging properties, if the material quality is not good, it will affect the life of hollow glass products, in all sealants, most can reflect is butyl rubber as the basic raw materials of various types of sealant sealant and moisture barrier properties, and so on standard hollow glass curtain wall curtain wall must adopt double sealing is a very correct decision. Here are a variety of sealants water vapor permeability coefficient table, from the table we can see that the structure of glue can not be used as insulating glass sealant alone.

Q: What are the cutting and cutting of acrylic and aluminum-plastic plates?: Acrylic comes from English Acrylic, generic name for Acrylic acrylic and methacrylic acids chemicals. Including monomers, plates, aggregates, resin and composite material, acrylic acid methyl ester by methyl monomer (MMA) polymerization, namely polymethylmethacrylate (PMMA) organic glass plate, "organic glass" from the name "Oroglas" (a PMMA), from the "Organic Glass" (organic glass).

Q: How to identify and select high quality insulating glass?: Hollow glass is composed of two or more pieces of glass, the glass by the internal filling the hollow aluminum isolation desiccant, and the hollow part filled with dry air or inert gas, and sealed with butyl rubber, polysulfide rubber or plastic structure, form dry space glass.

Q: What kind of glass is smoked glass?: * clarifierIn the process of making glass, some bubbles will appear. Reducing the bubbles is the use of fining agents, mainly arsenic trioxide, antimony oxide and nitrating salt

Q: What are the materials for car windshields? Is there anything different than ordinary glass?: Prospects: glass technology has now completely penetrated the automotive industry, becoming an indispensable part of the automotive technology field. Although China is still the automotive industry such as glass and glass industry (BSG) belong to two different areas of the industry, the former belongs to the machinery manufacturing industry, which belongs to the light industry, but from the development of the car, the relationship between the two is more and more close. Nowadays, people always study and develop automotive glass from the perspective of automobile safety and appearance, and introduce new varieties.

We own many kinds of optical process equipment and inspection equipment, such as automatic computer double-side polishing machines, automatic rolling round machines, cutting piece machines, spectrum testing machines, bevel angle and edge machines, and constant temperature cabinets. We can produce various kinds of optical glass on the basis of customer's needs and the guarantee of quality.

1. Manufacturer Overview

Location	Jiangsu,China
Year Established	2004
Annual Output Value	US$2.5 Million - US$5 Million
Main Markets	North America South America Eastern Europe Africa Eastern Asia Western Europe
Company Certifications	ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Shanghai
Export Percentage	21% - 30%
No.of Employees in Trade Department	3-5 People
Language Spoken:	English, Chinese
b) Factory Information
Factory Size:	3,000-5,000 square meters
No. of Production Lines	5
Contract Manufacturing
Product Price Range	Average