An inorganic material called optical glass by means of refraction, reflection, transmission of light through the way, or by changing the intensity or spectral distribution of light. Its stable optical properties and high optical uniformity. Optical glass has a high degree of transparency, chemical and physical properties (structure and properties), with a high degree of uniformity, with a specific and accurate optical constants. It can be divided into silicate, borate, phosphate, fluoride and sulfur compounds. According to their variety, mainly in refractive index (nD) - Abbe value (VD) to map the location classification. Traditionally nD>1.60, and nD<1.60 vd="">50, all kinds of glass vd>55 constant (k) crown glass and other types of glass set for flint (f) of glass. Crown glass generally convex lens, a concave lens for flint glass.

Optical glass is the basis and important part of the optoelectronic technology industry. Especially since the 90s of the 20th century, with continuous integration of optical and electronic information science and new material science, as optoelectronic materials based on the optical glass in the optical transmission, optical storage and optical display fields of applications is growing by leaps and bounds, become the information society especially is one of the basic conditions for the development of optoelectronic information technology. With the sustained and steady development of the domestic economy, China's optical glass manufacturing industry is developing rapidly.

In fact, the development of optical glass and optical instruments are inseparable. The new reform of the optical system often puts forward new requirements to the optical glass, thus promoting the development of optical glass, also, the success of new varieties of glass also often in turn promote the development of optical instruments.

Haian Huihong photoelectric instrument factory is a professional production, processing a variety of colored optical glass, colorless optical glass, filter, filter, insulating glass, yellow glass, orange glass, green glass, red glass and so on products enterprises. Company product quality, since the sale of the vast number of customers, warmly welcome you come to discuss the purchase.

Optical glass is the basis and important part of the optoelectronic technology industry. Especially since the 90s of the 20th century, with continuous integration of optical and electronic information science and new material science, as optoelectronic materials based on the optical glass in the optical transmission, optical storage and optical display fields of applications is growing by leaps and bounds, become the information society especially is one of the basic conditions for the development of optoelectronic information technology.

With the sustained and steady development of the domestic economy, China's optical glass manufacturing industry is developing rapidly. According to the National Bureau of statistics data show that in 2010, the optical glass manufacturing industry enterprises above Designated Size amounted to 246, industry throughout the year achieve sales revenue for 234.05 billion yuan, 53.70% year-on-year growth; 15.37 billion yuan in profits and 87.10% year-on-year growth, asset size reached 264.50 billion yuan, year-on-year growth 77.49%. As the optical glass manufacturing industry to domestic sales, the financial crisis is relatively small, the industry is still showing a good growth momentum.

The stripe of common glass, mainly because of the material is not uniform; refractory material corrosion (mainly introduces Al); the stirring of the production of glass products produced.

So optical glass from the several aspects, the raw material requirements of >99% purity, impurities are less than one hundred thousand minutes, and the size of the raw materials, the scale has a high demand. Take the pot or platinum as refractory ceramics. In general, the casting method, the rolling method, the broken cylinder method and the liquid method are used to prevent the stirring of the glass in the forming process.

Also furnace structure and daily-use glass furnace is not the same, it is melting pool (feeding), regulation pool (adjust the melting atmosphere), refining pool (clear), equalization basin (mixing), large furnace Nissan amount is generally only 5 tons.

China Building Materials Science Research Institute successfully developed large size quartz glass products, products with diameter up to 600 mm above, optically homogeneous reached 2.1 10-6, to fill the domestic blank, marking the Chinese large size quartz glass optical homogeneity successfully entered the "2.0" era, laid the technical foundation for the R & D greater size and high uniform quartz glass products.

Optical homogeneity of the material characterization on the internal refraction rate uneven degree, if the optical uneven light through the medium will produce phase may lead to optical system to realize the expected function, even can not work properly. As a necessary for all kinds of sophisticated optical system lens material, fused silica glass optical uniform directly affect the imaging quality of the optical system. From "95", Chinese Building Materials Science Research Institute is committed to high uniform quartz glass for new technology and new equipment and related basic theory research, has pioneered the vertical chemical vapor deposition process in China in the "fifteen" period, the manufacture of large size, Gao Junyun quartz glass becomes possible; "11th Five-Year" during the implementation of a diameter of 300 mm diameter optical uniformity of 3 * 10-6 and mass production; through the "12th Five-Year" science and technology research, the optical homogeneity from 3 * 10-6 to 2 * 10-6 to achieve a qualitative leap, the formation of independent intellectual property rights of complete sets of technology and equipment, won the 2014 building materials industry science and Technology Invention Prize two the progress of the industry, driven by the application of related products, in the field of high technology and high precision of mapping camera system.

We usually see the camera of the camera on the edge of the full infrared LED lamp, the LED lamp is mainly in low light or dark night, such a infrared radiation to the object or human body reflection back for imaging and recognition, so as to achieve the public safety protection and monitoring. But infrared LED in the work will often send out the red light, because the LED is a semiconductor chip (GaAs, silicon, etc.) made, through the electricity after the experience of heat. In particular, the process is more mature 850 infrared light-emitting tube, the phenomenon of the red burst. In the dark night, if someone saw the red light on the camera in the work, immediately remove the camera or away from the camera, it is not conducive to the normal monitoring. Now a practice is only through infrared brown plastic, the other one is infrared light in a different location, but this is not the best choice.

How can we eliminate this red light? Haian Hui Hong photoelectric R & D and production of infrared filter can effectively eliminate the red light.

This kind of filter from the naked eye see in the daytime or at night is essentially invisible, this product combined with infrared brown plastic filter plate through our, that kind of feeling is the day to see the shadow of the LED lamp. At night, can not see highlights of the LED lamp. Appearance high-grade generous. Is the main choice of high-end security cameras. At present, the security camera is more and more high-end, diversified products is the choice of our guests.

Rainbow also produced by the introduction of infrared transparent plastic, ultra strong solar light suppression 850nm narrow band filters. We welcome inquiries and customization.

Infrared wavelength and visual quality of simple lenses:

A:720nm or 680nm, 665650nm, or the following, cloudy or facing the common brightness of the TV can see the red light.

B:760nm, in front of a 40 Watt household light bulb can see the light bulbs in the near segment of the very light goods. Facing the 20 Watt energy-saving lamps can be found very dark and light tubes.

C:850nm against 40 Watt household lighting can see filament lamp. In front of a 20 Watt energy-saving lamp is almost can not see anything to, if you can see a lamp for secondary leaky lens.

D:950nm almost invisible to the 40 Watt light bulbs.

1, the protection of the lens, to avoid direct contact, causing damage;

2, the absorption of the atmosphere of the ultraviolet, to eliminate the fog like, increase the imaging resolution; UV mainly used to prevent the finger touch the lens, dust into the lens. As for the function of the filter to filter out the UV, it is the second.

In addition, before the use of CPL filters and the like, try to remove the UV, can reduce the occurrence of image circle of opportunity, improve the image quality.

When facing the light source, especially at night, please take off the UV. or the lens is not smooth cause the glare will be more powerful. After all, not the integration of the lens, the cuff of error is inevitable.