2-Pack Large Fresnel Lenses 300mm11.81
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2-Pack Large Fresnel Lenses 300mm11.81
Ideal for solar concentration, solar heating and light gathering applications. Also perfect for outdoor cooking and fire starting with high efficiency in focusing and precision
2-Pack Large Fresnel Lenses 300mm11.81" Focal Length 260mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. Focal Length 260mm
Artigo n.º: 10212888

2-Pack Large Fresnel Lenses 300mm11.81" Focal Length 260mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. Focal Length 260mm

Artigo n.º: 10212888

€ 84

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  • dhl
Ideal for solar concentration, solar heating and light gathering applications. Also perfect for outdoor cooking and fire starting with high efficiency in focusing and precision
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O que se Destaca

Tamanho grande
With a diameter of 300mm, these lenses provide significant magnification, making them ideal for solar heating and cooking applications, attracting both hobbyists and educators.
Material durável
Crafted from high-quality acrylic, these lenses are lightweight yet sturdy, ensuring longevity and effective performance in various environmental conditions, setting them apart from traditional glass alternatives.
Usos versáteis
Perfect for solar cooking, visual education, and experimental projects, these lenses cater to a wide range of applications, enhancing user experience for teachers, students, and outdoor enthusiasts.

Detalhes do produto

Buy 2-Pack Large Fresnel Lenses Φ300mm11.81 Focal Length 200mm Acrylic Magnifier at Ubuy Portugal. Ideal for Solar Heating, Solar Cooking & Visual Education. Shop now!
Peso da embalagem4.34 libra

Quem Deverá Comprar?

Suitable For
  • Solar Enthusiasts

    Ideal for individuals interested in solar energy applications, enhancing solar heating and cooking experiences.

  • Educational Use

    Great for teachers and students exploring concepts of light refraction and solar energy in practical projects.

  • Hobbyist Chefs

    Perfect for those experimenting with solar cooking techniques, providing a unique and eco-friendly cooking method.

Not Suitable For
  • Usuários Conscientes da Segurança

    Not suitable for individuals who prioritize safety, as lenses can concentrate sunlight and pose burn risks.

  • Usuários de Espaço Limitado

    Not ideal for people with restricted space, as the lenses require a suitable area for effective solar applications.

  • Indoor Activities

    Inappropriate for those looking for tools for indoor uses, since the lenses function best in direct sunlight.

DESCRIÇÃO DO PRODUTO

2-Pack Large Fresnel Lenses 300mm11.81" Focal Length 260mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. Focal Length 260mm

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Perguntas e Respostas dos Clientes

  • pergunta: What are 2-Pack Large Fresnel Lenses used for?

    Resposta: The 2-Pack Large Fresnel Lenses are primarily used for solar heating, solar cooking, and visual education. These lenses can focus sunlight onto a small area, creating high temperatures suitable for cooking or heating. They also serve educational purposes by demonstrating principles of optics, light concentration, and solar energy applications. For example, in a practical scenario, you could use these lenses to cook food outdoors or to demonstrate solar energy experiments in a classroom setting.
  • pergunta: How do Fresnel lenses work?

    Resposta: Fresnel lenses work by utilizing a series of concentric grooves that bend light towards a focal point, allowing for a thinner, lighter design compared to traditional lenses. The 200mm focal length provides effective concentration of sunlight, making it ideal for applications like solar cooking. By placing the lens at a correct distance from the cooking pot, you can harness significant solar energy to reach cooking temperatures efficiently, thus optimizing your outdoor cooking experience.
  • pergunta: What materials are the lenses made of?

    Resposta: The lenses are made from high-quality acrylic, which is lightweight and durable, making it suitable for outdoor use. Unlike glass, acrylic lenses are less prone to breakage, ensuring they can withstand the rigors of outdoor activities. This material also provides good optical clarity, enhancing the effectiveness of light concentration during solar heating or cooking. Whether for educational experiments or practical solar applications, the acrylic design ensures you can use the lenses safely and effectively.
  • pergunta: Can these lenses be used for educational purposes?

    Resposta: Absolutely! The 2-Pack Large Fresnel Lenses are excellent for educational purposes, particularly in demonstrating principles of solar energy and optics. Teachers can use them for hands-on experiments in physics and environmental science, helping students visualize how light can be focused and concentrated. A classroom demonstration might involve using the lenses to start a fire with sunlight or heat a metal object, providing a memorable learning experience about the power of natural energy.
  • pergunta: What is the size of each lens?

    Resposta: Each lens in the 2-Pack measures 300mm in diameter, making them large enough to capture and focus a substantial amount of sunlight. This size enhances their effectiveness for solar applications, ensuring enough light is directed to a focal point for cooking or heating. For instance, you can position these lenses above pots or materials you wish to heat, maximizing the solar energy absorption for efficient results.
  • pergunta: Are these lenses safe for solar cooking?

    Resposta: Yes, the 2-Pack Large Fresnel Lenses are safe for solar cooking when used correctly. The lenses can generate significant heat, so it is essential to monitor their use to prevent burns or overheating. When placed correctly, they can cook food efficiently without the need for traditional fuel sources. A practical example includes using them to make solar-powered s'mores or bake bread, showcasing a sustainable cooking method that harnesses the sun’s energy.
  • pergunta: How do I maintain the lenses?

    Resposta: Maintaining the Fresnel lenses is straightforward. Keep them clean and scratch-free for optimal performance. Using a soft, damp cloth to wipe down the surfaces helps remove dust and debris that could obstruct sunlight. Avoid harsh chemical cleaners that may damage the acrylic surface. Proper care ensures the lenses continue to perform well, whether for solar heating, cooking, or educational demonstrations.
  • pergunta: Can I use these lenses with a solar cooker?

    Resposta: Yes, you can effectively use these Fresnel lenses with a solar cooker. Their focal length of 200mm is particularly suited for concentrating sunlight onto cooking pots or reflectors within solar cookers, enhancing their efficiency. By positioning the lenses correctly, you could significantly increase the temperature reached in your solar cooker, allowing for quicker cooking times and more effective meal preparation outdoors.
  • pergunta: What types of food can I cook using these lenses?

    Resposta: You can cook a variety of foods using the Fresnel lenses for solar heating. Options include simple dishes like grilled vegetables, baked desserts, or even boiling water. The concentrated sunlight can achieve high temperatures, making it possible to prepare meals without conventional energy sources. Engaging in solar cooking can not only provide a unique culinary experience but also promote sustainable living practices.
  • pergunta: Where can I buy the 2-Pack Large Fresnel Lenses in Portugal?

    Resposta: You can purchase the 2-Pack Large Fresnel Lenses through Ubuy in Portugal. Ubuy is a reliable e-commerce platform that offers a wide range of products, including specialty items like Fresnel lenses. By shopping through Ubuy, you can find detailed product descriptions, customer reviews, and potentially exclusive offers, making your shopping experience convenient and informed.

SixSeasons Magnifying Tools Editorial Review

This Fresnel lens magnifies sunlight and can be used to start fires easily or adjust the focus of a camera lens. It has good flexibility and should survive being put in a backpack. However, the lens is not indestructible, and either side can be scratched, which would diminish its effect. It is important to note that the lens is very hot at its focal point, and it is powerful enough to burn asphalt, wood, paper, plastic, and wax. Overall, this magnifying fresnel lens is a great tool to have for emergencies, outdoor adventures, or photography experiments. However, some customers have received scratched lenses, and one review stated that the focal point was not as described.

Avaliações e Classificações dos Clientes

5.0
1 classificações de clientes
  • 5 Estrela
    100%
  • 4 Estrela
    0%
  • 3 Estrela
    0%
  • 2 Estrela
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Prós

  • Can start fires easily
  • Good flexibility and durability
  • Magnifies sunlight well
  • Useful for emergencies, outdoor adventures, and photography experiments

Contras

  • Some customers have received scratched lenses

Histórico de preços do produto

Informação importante

  • Limitações: para produtos expedidos internacionalmente, tenha em atenção que qualquer garantia do fabricante pode não ser válida; opções de serviço do fabricante podem não estar disponíveis; manuais de produtos, instruções e avisos de segurança podem não estar nas línguas do país de destino; os produtos (e materiais que o acompanham) pode não ter sido concebido em conformidade com as normas, especificações e requisitos de rotulagem do país de destino; e os produtos podem não estar em conformidade com a voltagem e outras normas elétricas do país de destino (requerendo assim o uso de um adaptador ou conversor caso seja apropriado). O destinatário é responsável por garantir que o produto pode ser legalmente importado para o país de destino. Quando encomenda à Ubuy ou aos seus afiliados, o destinatário é o importador de registo e deve estar em conformidade com todas as leis e regulamentos do país de destino.
  • Nem todos os produtos listados na Ubuy estão à venda, uma vez que a Ubuy é um motor de busca global. Os produtos estão sujeitos a leis de exportação/comércio.

€ 84

Encomende já e receba por volta de Sexta-Feira, Julho 24

QTY:

Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Os nossos principais Parceiros Logísticos
  • fedex
  • dhl
Entrega internacional mais rápida

Recursos e benefícios

  • Suitable for various applications
  • Great for visual aids education and expert usage
  • Made of high-quality PMMA(acrylic)
  • High transmittance of light
  • High efficiency in focusing with precision
  • Backed by professional expertise