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Eschenbach Loupe Magnifier: magnification: 15x, lens size: 25m, lens type: plano-convex
Sale Price: $69.95
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This Eschenbach product is ideal as a watchmaker's magnifier or gemstone magnifier.
Features:
* With air hole to prevent condensation
* Made from flame-retardant plastic
Technical information:
* PXM® light-weight lens with duplex coating
* Lenses coated on both sides with cera-tec® hard coating
* 2-lens system
* Color: anthracite
* Lens Size: 13mm
* Magnification: 10X
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Loupe Magnifier: magnification: 7x, lens size: 25m, lens type: plano-convex
Sale Price: $44.00
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This Eschenbach product is ideal as a watchmaker's magnifier or gemstone magnifier.
Features:
* With air hole to prevent condensation
* Made from flame-retardant plastic
Technical information:
* PXM® light-weight lens with duplex coating
* Lenses coated on both sides with cera-tec® hard coating
* Color: anthracite
* Lens Type: Plano-Convex
* Lens Size: 25mm
* Magnification: 7X
Model: 1124-7
Manufacture: Eschenbach
Origin: Germany
#1124-7
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Precision Plano-Concave Lens
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Newport # KPC019AR.14. Designed to meet the demanding requirements of laser electro-optic applications. BK 7 optical glass. 12.7 diameter. EFL, -75mm. f/#, -5.9mm. BFL, -76.64mm. FFL, -75mm. BBAR coating 430-700nm...
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Here are some more information for Plano Convex:

Types of optical lens
An optical lens has a perfect or approximate axial symmetry for light transmission and refraction. Based on different elements, optical lenses can be differently classified.
If an optical lens has only one optical element (one focal point), it is called a simple lens. Lenses with multiple optical elements (multiple focal points) are called compound optical lenses. From the material aspect, optical lens has types of plastic lenses, glass lenses, and polycarbonate lenses etc… By curvature of the two lens surfaces, optical lenses can be divided into mainly concave lenses and convex lenses. The following is a detail description on this point.
There are still several variations within convex optical lens. The first type is biconvex, which has two convex surfaces. So that it is also named double convex. This is the standard convex optical lens type. More exactly, if both surfaces have the same radius of curvature, the optical lens is called equi-convex. The second type is plano-convex optical lenses if one surface is flat and the other is convex.
Optical lenses with two concave surfaces are named biconcave, or just concave. This is the standard concave lens. Secondly, optical lens with a flat surface and a concave surface is called plano-concave.
Although corrective lenses can be made of many of the above lenses types, the most common used optical lens is concave-convex. This kind of optical lenses have one convex side and one concave side. For hyperopia and presbyopia correction, a convergent optical lens is used, and for myopia correction a divergent lens. All these two types can be made from concave-convex lenses with different curvatures between the front and rear surface.
If you want to know more about optical lens, then feel free to visit http://www.firmoo.com/lenses-and-frame.html
About the Author
Firmoo.com is the fastest growing online community selling affordable yet high quality prescription eyeglasses, discount eyeglass frames and other eyewear. Firmoo's return and refund policy makes your purchase with Firmoo risk-free. Be sure to get your online eyeglasses ready.
Is the power of a plano-convex lens is half than the power of full convex lens?
Yes. If the curvature of biconvex lense's both surfaces are equal and equal to planoconvex lense's; and both are made of same glass of refrtactive index mu.
1/f = (mu-1)(1/R1 + 1/R2); if R1 = R2 = R then
for biconvex lens
1/f = BPower = 2(mu-1)(1/R), and
1/F = PLPower = (mu -1)[1/R + 1/(infinity)] = (mu-1)/R
So power of biconvex lense = 2(mu-1)(1/R) = 2(Power of plano convex lens)
CO2 Laser Focusing Lenses As Field Replacements For Steel Cutting Lasers
A line of larger CO2 focusing lenses for industrial steel cutting lasers that are stocked in a variety of sizes and focal lengths for 24-hour delivery is available from Laser Research Optics of Providence, Rhode Island.
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January 4, 2010 at 11:12 pm, filed under
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