Which lens is used in solar panels?

Solar Concentrator Fresnel lenses are shaped like a dart board, with concentric rings of prisms around a lens that's a magnifying glass. All of these features let them focus scattered light from the Sun into a tight beam.  Solar Concentrator Fresnel lenses are favorable from the weight and cost aspects and may find uses in current applications. A Fresnel lens is divided into a number of zones, the spacing of which can be as small as a few tenths of a millimeter to several centimeters. Within each aperture zone the surface of the lens is tilted so that it refracts light at the same angular amount as a normal spherical lens of the same focal length. In general, these lens facets are flat, but with tilted surfaces since the effect of curvature would be neg­ligible in affecting the image size. If the facets were a significant portion of the aperture radius and larger than the desired focal image size, then cur­vature of the facets would be necessary.

HOW DO SOLAR CONCENTRATORS WORK?

A solar concentrator uses lenses, called Fresnel lenses, which take a large area of sunlight and direct it towards a specific spot by bending the rays of light and focusing them. Some people use the same principle when they use a magnifying lens to focus the Sun's rays on a pile of kindling or paper to start fires. A solar concentrator uses lenses, called Fresnel lenses, which take a large area of sunlight and direct it towards a specific spot by bending the rays of light and focusing them. Some people use the same principle when they use a magnifying lens to focus the Sun's rays on a pile of kindling or paper to start fires. Solar concentrators put one of these lenses on top of every solar cell. This makes much more focused light come to each solar cell, making the cells vastly more efficient. Concentrators work best when there is a single source of light and the concentrator can be pointed right at it. This is ideal in space, where the Sun is a single light source. The solar concentrators also have the advantage that the solar cells can be spaced farther apart since light can be focused on each cell. This means fewer solar cells need to be made and the panels cost less to construct. In addition, engineers can now put thick glass or plastic over the solar panel to protect it from micrometorites, something they would have a hard time doing if they had to worry about allowing enough light to reach the solar cells.

Circular Fresnel Lenses

Fresnel lensler, özellikle dairesel olanlar, küçük güneş enerjisi uygulamaları için iyi birer yoğunlaştırıcı lenstir. Örneğin, silikon ve galyum arsenit güneş pilleriyle test edilen yoğunlaştırıcılar genellikle dairesel Fresnel tipindedir. Bu seçim kısmen düşük maliyetlerinden kaynaklanmaktadır, ancak aynı zamanda 2000'i aşan parlaklık yoğunluklarıyla hassas bir plastik lensten yüksek yoğunluklar elde edilebildiği için de tercih edilmektedir. Bu uygulamalarda, küçük güneş görüntüsünü alıcı eleman üzerinde merkezde tutmak için güneşi takip etmek gereklidir.

Güneş Konsantratörünün Uygulaması

• Odaklanma eylemi

• Güneş yoğunlaştırıcılarında ve LED ışıklarda yaygın olarak kullanılır.

• Ayrıca güneş enerjisi toplama sistemleri, güneş ışığı altında ateş yakma, sıcak su ısıtıcı, güneş enerjili fırınlar için de uygundur.

GÜNEŞ YOĞUNLAŞTIRICI LENSİNİN ÖZELLİKLERİ VE AVANTAJLARI

• %92 Yüksek ışık geçirgenliği

• Özel sipariş imkanı mevcuttur.

• Yaklaşık 40 yıllık profesyonel üretim ve tasarım deneyimi.

• Yüksek kalite ve rekabetçi fiyat

• CE, ROHS, Fabrika Denetimi, ISO9001 

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