BK7/K9 optical glass is a kind of borosilicate crown glass material. The following is a detailed introduction to bk7 optical glass:
1. Material Properties of BK7/K9 optical glass
Composition: bk7/K9 optical glass is mainly composed of borosilicate, which endows it with excellent optical properties and chemical stability.
Hardness: BK7/K9 glass has a relatively high hardness, which can effectively prevent scratches and ensure the clarity and service life of optical components.
2. Optical Performance
Transmission spectral range: The transmission spectral range of BK7/K9 optical glass is 380-2100nm, covering the visible light and near-infrared regions, and is suitable for a variety of optical applications.
High uniformity: BK7/K9 optical glass features high uniformity, which can ensure the stable and reliable performance of optical components.
Low bubble and impurity content: Its low bubble and impurity content further enhances the quality and performance of optical components.
3. Processing and Application of BK7/K9 optical glass
Easy processing: The production and processing technology of BK7/K9 optical glass is relatively simple, which reduces production costs and improves production efficiency.
Excellent mechanical properties: It has good mechanical properties and can withstand certain external forces.
Wide application fields: BK7/K9 optical glass is widely used in numerous fields such as optoelectronics, microwave technology, and diffractive optical elements, providing important optical material support for the development of these fields.
Ultraviolet optical glass is an industrial optical material with specific ultraviolet light transmission characteristics. According to the differences in components, ZWB optical glass is divided into three types: ZWB1, ZWB2, and ZWB3 (corresponding to the foreign UG11, UG1, and UG5 models). ZWB optical glass is black in color and is mainly used to manufacture ultraviolet filters and the walls of high-pressure mercury lamp tubes . The transmittance of the ZWB optical glass can reach 89.5% in the 400nm band (under the condition of 5mm thickness), the chemical stability index is 594℃ (A2856K standard), and the thickness range covers 0.3mm to 120mm . The quality control system includes classification standards such as bubble grade (Grade B) and stripe grade (3C/3B).
Advantage of ZWB optical glass:
1.At the 400nm band, the transmittance of ZWB1 type optical glass reaches 89.5% (under the condition of 5mm thickness).
2.Chemical stability tests show that the ZWB optical glass can withstand a high temperature of 594℃ under the A2856K standard.
3.The transmission spectrum shows a stepped spectral curve in the ultraviolet region from 300 to 400nm, and the transmittance drops significantly after 500nm
GRB optical glass is glass with a slightly bluish-green tint.
GRB1 optical glass is a phosphate-absorbing glass, and GRB3 optical glass is a silicate absorbing glass.
Heat-insulating optical glass is a type of flat glass that can absorb a large amount of infrared radiation energy and maintain a high visible transmittance.
Generally, there are grey, brown, blue, green, bronze, bronze, pink and golden yellow, etc. At present, China mainly produces the first three colors of heat-insulating glass. There are four thicknesses available: 2/3/5/6mm. Heat-absorbing glass can be further processed into polished, tempered, laminated or insulating glass.
Advantage of GRB optical glass:
1.Absorb solar radiation heat. For instance, a 6mm thick transparent float glass has a total heat transmission of 84% under sunlight, while the total heat transmission of heat-absorbing glass under the same conditions is 60%. The color and thickness of heat-absorbing glass vary, and so does the degree to which they absorb solar radiation heat.
2. Absorb visible light from the sun, weaken the intensity of sunlight, and play an anti-glare role.
4.It has a certain degree of transparency and can absorb a certain amount of ultraviolet rays.
HWB Infrared filters optical glass filter and block visible light while allowing infrared rays to pass through.
The large wavelengths of infrared rays can easily penetrate any object, meaning that infrared rays do not refract when passing through an object.
By taking advantage of this characteristic of infrared rays, only long-wavelength infrared rays are allowed to pass through, while short-wavelength ultraviolet and visible light are filtered out. The colors are red and black. The thickness range is 0.8 to 300mm.
Neutral grey optical glass is used in photographic equipment (such as cameras and video cameras), and it is in large quantities. The key lies in the wavelength. It's just an accessory of an instrument
Blue cobalt glass is a special type of fire-viewing glass, mainly used for observing the flame color reaction of potassium in chemical laboratories. It is also widely used in many industrial Settings (such as cement plants, steel mills, and industrial kilns).
The production process of blue cobalt glass is rather unique. It is a special type of glass made by adding "cobalt blue" (mainly composed of cobalt aluminate: Co(AlO2)2) during the production process. The addition of cobalt blue gives the glass a special blue color, thus it is named blue cobalt glass.
This product is also available in two colors: dark blue and light blue. Generally, dark blue cobalt glass is exclusively used in cement plants, while light blue is mainly used in laboratories to observe the flame color reaction of potassium.
Characteristics of borosilicate glass:
a. Low coefficient of thermal expansion
b. High heat resistance: It can withstand high-temperature environments, with a short-term service temperature of up to 500℃ and a softening temperature of approximately 820℃, making it suitable for scenarios with rapid heating and cooling.
c. It has a relatively high hardness, with a flexural strength of approximately 25MPa and is wear-resistant
Ceramic glass, a polycrystalline solid material containing a large number of microcrystals, is formed through controlled crystallization during the heating process of glass. Its microstructure is composed of fine crystals and residual glass phases. Ceramic glass possesses the dual characteristics of both glass and ceramics. Its atomic arrangement is regular, with high brightness and good toughness.
Main applications of ceramic glass:
1. Transparent ceramic glass is mainly used as the panel for stoves and fireplaces.
2. Black and white ceramic glass is mainly used for the panels of induction cookers and electric ceramic stoves
3. Protective panels for electric heaters, high-performance spotlights and floor lamps.
4. Red and ultraviolet drying equipment.
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