A longpass (LP) Filter is an optical interference or coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared). Longpass filters, which can have a very sharp slope (referred to as edge filters), are described by the cut-on wavelength at 50 percent of peak transmission. In fluorescence microscopy, longpass filters are frequently utilized in dichroic mirrors and barrier (emission) filters. Use of the older term 'low pass' to describe longpass filters has become uncommon; filters are usually described in terms of wavelength rather than frequency, and a "low pass filter", without qualification, would be understood to be an electronic filter Longpass Filters,Long Pass Filter,Longpass Filter,Long Pass Filters Changchun Realpoo Photoelectric Co., Ltd. , https://www.optics-realpoo.com
November 24 flat material index 136.7 points, down 0.15% over the previous day. The declines in the medium- and heavy-rolled indices were relatively significant, falling by 0.20% and 0.19% respectively. In today's plate market, the market price in Changsha led the decline. Today's weaker futures and electronic market fell again and again plunged market confidence. Businesses are more pessimistic about late-stage trends, while downstream demand releases remain sluggish. Most of them are on-demand. With the arrival of northern resources, local stocks are showing slight upward trend. Under the influence of the pressure of capital repatriation, the operation performance was weak, and the quotation was again slightly adjusted back. On November 24, Changsha market plate 20mm fell 30 yuan/ton from the previous trading day.
In today's hot-rolling market, the Tianjin market continues to fall. Recently, no matter how the price adjustment, in addition to certain fixed needs, the market is extremely weak, the inquiry calls are less, and merchants generally feedback, and the actual purchasing of downstream users does decrease. In view of this situation, there is little significance for the adjustment of the general price sense of merchants. Therefore, the market is mainly based on the mode of operation of the market. Therefore, the price of the market continues to fall in the mainstream of the national market.
On November 24, the long products index was 181.3 points, a decrease of 0.16% from the previous trading day. Today's domestic steel futures market started to fluctuate, and gradually rose in the afternoon. Among them, the Lord 1205 received 4073, which was the same as the previous trading day. Today, the domestic long-stock spot market has generally declined, among which the low price in Nanning is frequent. Yesterday, high market prices were difficult to deal with. Due to the impact of low market prices and the continued deterioration of the external environment, the decline in the local market price this morning was greater than yesterday. In addition, the unfavorable external environment and the relatively large decline in the surrounding markets have changed the attitude of the merchants in the early stages, and their willingness to withdraw from shipping has strengthened. On November 24th, the HRB335 20mm thread in the Nanning market fell compared with the previous trading day. 30 yuan/ton.
The domestic steel spot market continued to decline slightly today. Affected by Europe's bad news, the external disk continued to drop sharply. Affected by this, the forward price of domestic steel products gapped lower today, and the market operation was also worsened. Business confidence was generally insufficient. In addition, due to continued market growth last week, the market demand for wait-and-see attitudes began to rise again. With the continuous delivery of steel mills, market inventories in most regions began to rise slightly, which brought greater sales pressure to the market, so most businesses continued to callback. Quote. On November 24, the Myspic Composite Index was 157.4 points, down 0.16% from the previous day.