Optical filter is a kind of optical element that selectively selects the transmission, reflection, cut-off and attenuation of spectral wavelength. According to its function, it can be divided into band pass filter, long wave pass filter, short wave pass filter, two Color filters, neutral density filters (ND Filter), notch filters, cold mirrors, hot mirrors, color filters, etc. Divided into interference filters and color absorption filters. These filters are widely used in industries and product fields such as spectral analysis, biomedicine, machine vision, fluorescence microscopy, and industrial automation. The band-pass filter selectively allows certain spectral wavelengths to pass through and prevents certain spectral wavelengths from passing through in its spectral range; the neutral density filter (ND Filter) reduces the transmittance of the specified spectral wavelength range, thereby Reduce luminous flux, which is conducive to the protection of sensors/electronic components. It has a wide range of applications in the field of laser optics/optoelectronics; cold/hot mirrors can specifically reflect and transmit light with longer wavelengths in the spectral range, and are widely used Applied in the lighting system, it is helpful to remove the heat generated in the lighting system. Beam Splitter Filter,Nawrrow Bandpass Filter,Longpass Filter,Shortpass Filter Bohr Optics Co.,Ltd , https://www.bohr-optics.com
Hong Kong Christmas traditional light bulb pollution is amazing, use LED
Every year during the Christmas season, the lights on both sides of Tsim Sha Tsui and Victoria Harbour are smashed, but there is a price behind the glory. A survey conducted by environmental groups found that more than 85,000 traditional light bulbs were used in the exterior Christmas lights of Victoria Harbour and Tsim Sha Tsui. They were opened five or six hours a night and more than four during Christmas. One hundred tons of carbon dioxide emissions, the capacity is equal to 1,600 double-decker buses, it is recommended to use 80% of the energy-saving LED lights.
The Tai Po Environmental Protection Society observed a total of 17 buildings with exterior wall lighting on both sides of the Victoria Harbour and the Tsim Sha Tsui area. It was calculated to use 5,036 light bulbs for the exterior lighting of a Tsim Sha Tsui Building. The building uses only over 85,000 light bulbs.
These lightings are made up of traditional incandescent bulbs, which are calculated at 25 watts per light bulb and five to six hours per night. Seventeen buildings consume up to 570,800 during the forty days of Christmas. Thousands of electricity, the amount of carbon dioxide produced is about 404 tons, equivalent to the emissions caused by a fire, enough to fill 1,600 double-decker buses.
Qiu Rongguang, chairman of the association, agrees that lighting can add a festive atmosphere, but it is recommended that companies can switch to 80% energy-saving LED lights instead of traditional incandescent lamps to reduce carbon dioxide emissions from power consumption. Qiu Rongguang pointed out that the luminosity of LED lamps is the same as that of traditional incandescent lamps. It is believed that even if LED bulbs are used, the Pearl of the Orient will remain beautiful. Although LED lights are more expensive than incandescent lamps, they can be returned quickly because the lighting has been on for two or three months. He also suggested that merchants could consider reusing Christmas lights.
The group also found that many people's lighting in the home furnishings was bright. If one in Hong Kong's 2.2 million households closes the Christmas tree or window sill and arranges a set of Christmas lights before going to bed at 11 o'clock, they can reduce carbon dioxide emissions by 221 tons per Christmas.
Related reading: Do we need to throw away the lantern?
I know that Christmas lights are wasting electricity, but I really can't give up. I have seen light-emitting diode (LED) lights that are said to save energy in the store, and I wonder if they are really better than the lights in my closet. Should I immediately drop the old lamp for a new lamp?
To be honest: no matter how we think of it, lighting will never be eco-friendly. However, when the energy-saving company said that environmental issues do not have to blame the Christmas lights, I agree. If the hall is a cherished family tradition, there is always a way to reduce the environmental impact.
First of all, basic old-fashioned incandescent lamps consume a lot of power. Open a row of hundreds of high-wattage bulbs and let them light up for hundreds of hours, which will actually use a lot of electricity. According to a report released by the US Department of Energy, Christmas lanterns use more than 6 trillion watt-hours of electricity per year, equivalent to the total electricity consumption of 500,000 households. To make matters worse, incandescent lamps have a short life span and can be thrown into trash cans in a few years.
On the other hand, the new LED lights consume much less power than incandescent lamps. According to the Department of Energy, the larger incandescent lamps average about 92 watts, while the LEDs with the same illuminating effect require only 2.5 watts. For the most popular miniature lamps on the market, incandescent lamps are not so bad, generally 36 watts, but still far worse than the average 5 watt LED miniature. In addition, LED lights can be used for more than 20,000 hours, and their service life is 10 times that of incandescent lamps. LED lights have another benefit: they don't cause fire hazards like incandescent lamps.
Of course, LED lights also have several shortcomings. First of all, they are a lot more expensive. Secondly, LED bulbs (especially the larger ones) are often not as bright as incandescent lamps. But I saw that the design of LED lights is no less than any incandescent lighting. Go shopping in the store and you will find a style you like.
It seems that you should continue to use the old lights until they are scrapped, or replace them immediately? The downside of buying a new Christmas light now is that you will spoil a good product and buy many from China. Products. LED Christmas lights are more complex than incandescent lights, which means they need more energy to produce them. However, lighting experts generally believe that the energy-saving effect of such a bulb is enough to offset the energy consumption during production.
If you are using a larger, more power-hungry bulb, change it to an LED light. If it is a small incandescent lamp, it may be useful to scrap, especially if you are using a low-wattage energy-saving brand. However, I think switching to miniature LED lights is now the greenest choice. In fact, instead of switching to LED lights as soon as possible, the only reason to say that there is a more attractive (and perhaps more power-efficient) lamp next season. But isn't this the consistent problem of buying new gadgets for Christmas? (Youth Reference)
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