1. Plastic color filter In recent years, a variety of plastic colored 8-eye scanning beam lamp filters have been put on the market, and can be arbitrarily selected in terms of color, quality and price.
2. Gelatin translucent filters are still used in the United States, but not in the UK. Unfortunately, it is easy to scratch, thousands of crisp, so its color can not be maintained for a long time and must be replaced frequently.
3. In many cases, the color glass is replaced by high-strength plastic. It is rarely used in the UK, but it is still used in the US (especially for high-power PAR lamps) and Europe.