Basic Info.
Material
Borosilicate Glass
Specification
35cm*35cm*27cm
Product Description
big borosilicate Glass Fresnel Lens diameter 300mm
Fresnel lens:
It is a type of lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.The design of Fresnel lens enables the construction of lenses of large aperture and short focal length without the weight and volume of material that would be required in conventional lens design. Compared to conventional bulky lenses, the Fresnel lens is much thinner, larger, and flatter, capturing more oblique light from a light source.
Details:Compared to conventional bulky lenses, the Fresnel lens reduces the amount of material required compared to a conventional spherical lens by breaking the lens into a set of concentric annular sections known as "Fresnel zones", which are theoretically limitless. In the first variations of the lens, each zone was actually a different prism.
Though a Fresnel lens might look like a single piece of glass, closer examination reveals that it is many small pieces. For each of these zones, the overall thickness of the lens is decreased, effectively chopping the continuous surface of a standard lens into a set of surfaces of the same curvature, with discontinuities in steps between them.
In fact this product can be regarded as an array of prisms positioned in a circular fashion, with steeper prisms on the edges and a near flat convex center. Fresnel lenses are usually made of glass or plastic; their size varies from small to large. Since plastic lenses can be made larger than glass lenses, as well as being much cheaper and lighter, they are used to concentrate sunlight in multiple uses.
Material:3.3 borosilicate,a kind of optical glass.It has resistance to high temperature and high pressure,borosilicate also has good chemical stability.
size: 300 mm diameter
Usage
For lighting instruments,such as Spot lamp,stage lamp,reflector light,etc
Packaging & Shipping
Packing:
Well packed by using Air-laid paper,Bubble plastic cloth and carton.
Shipping:
Express,Sea Shipping,Air Shipping
Our Services
1)Samples
Not free.
2)Service
Do not support the unconditional refund
Company Information
Company Information
Our company was established as a nonstate owned enterprise in 1983.
The fixed capital is 1,350 thousand Yuan with the registered capital of 500 thousand Yuan and the production flowing capital of 1,500 thousand Yuan. Our company has 86 employees including one engineer and five professional technicians. Our company is specialized in producing optics lenses, stage lamp lenses, projector lenses, non-spherical lenses, industrial glass and mirror glass.
FAQ
Q1:How to buy?
Contact us to get T/T or PayPal account to make the payment.
Q2:How to buy online with credit card?
http://www.made-in-china.com/showroom/longweijy ,this is our online shop.
Q3:How about the quality?
We are the manufacturer,have 20 years experience in producing glass products.Don't worry about the quality,we are the best.
Q4:When will I get the reply from seller?
May delay 12 hours due to the time difference,We will reply you as soon as possible.
Q5:What is your preponderant products?
We are specilized in producing spherical lens,fresnel lens,Aspherical lens and sight glass.
Address:
No. 95-1 Xiwu, Shen′gang Street, Jiangyin City, Wuxi, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Agriculture & Food, Instruments & Meters
Company Introduction:
The company was founded in1983, the Department of private. Existing fixed assets of 135 million yuan, registered capital of 50 million yuan, the production of 1.5 million yuan of liquidity; 85 fulltime employees, an engineer, five professional management and technical personnel;
Specializing in the production of various optical instrument lens and stage lighting lens, projector lenses, aspherical lens, industrial glass, depending on the mirror glass. The company′s aim: Quality is the lifeline of the product; Customer satisfaction is the lifeblood of the company.
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