Calcium Fluoride Plano-Convex IR Lens

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Compare	Model	Diameter	Effective Focal Length (EFL)	F/#	Availability	Price	Brand
CAPX10 Calcium Fluoride Plano-Convex Lens, 12.7 mm, 25.4 mm FL, 180-8000 nm $292.00 Contact Us	CAPX10 Calcium Fluoride Plano-Convex Lens, 12.7 mm, 25.4 mm FL, 180-8000 nm	12.7 mm	25.4 mm	2	Contact Us	$292.00	Newport
CAPX11 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 50 mm FL, 180-8000 nm $292.00 Contact Us	CAPX11 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 50 mm FL, 180-8000 nm	25.4 mm	50.0 mm	1.97	Contact Us	$292.00	Newport
CAPX12 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 75 mm FL, 180-8000 nm $292.00 In Stock	CAPX12 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 75 mm FL, 180-8000 nm	25.4 mm	75.0 mm	2.95	In Stock	$292.00	Newport
CAPX13 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 100 mm FL, 180-8000 nm $292.00 In Stock	CAPX13 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 100 mm FL, 180-8000 nm	25.4 mm	100 mm	3.94	In Stock	$292.00	Newport
CAPX14 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 150 mm FL, 180-8000 nm $292.00 In Stock	CAPX14 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 150 mm FL, 180-8000 nm	25.4 mm	150 mm	5.91	In Stock	$292.00	Newport
CAPX15 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 200 mm FL, 180-8000 nm $292.00 Contact Us	CAPX15 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 200 mm FL, 180-8000 nm	25.4 mm	200 mm	7.87	Contact Us	$292.00	Newport
CAPX16 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 250 mm FL, 180-8000 nm $292.00 In Stock	CAPX16 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 250 mm FL, 180-8000 nm	25.4 mm	250 mm	9.84	In Stock	$292.00	Newport
CAPX17 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 500 mm FL, 180-8000 nm $292.00 In Stock	CAPX17 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 500 mm FL, 180-8000 nm	25.4 mm	500 mm	19.69	In Stock	$292.00	Newport
CAPX18 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 1000 mm FL, 180-8000 nm $292.00 In Stock	CAPX18 Plano-Convex Lens, Calcium Fluoride, 25.4 mm, 1000 mm FL, 180-8000 nm	25.4 mm	1000 mm	39.37	In Stock	$292.00	Newport

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Features

High IR Transmission Calcium Fluoride Substrate

Calcium Fluoride lenses are an excellent choice of material for UV to Near IR wavelengths (180 - 8,000 nm). It has a high average transmission and low chromatic aberration compared to various IR materials. In Near IR regime it has a very low GVD which makes it suitable for applications using femtosecond IR pulses. For more information, refer to the optical material technical note.

Standardized Plano-Convex Focal Lengths

Standard effective focal lengths across a variety of newport lens sizes, materials and shapes provide a systematic approach allowing for lenses of different sizes to be interchanged without requiring other changes to your optical system. Collimating a point light source coming from the planar surface or focusing a collimated light source which is incident on the curved surface will help to minimize the spherical aberration.

Plano-Convex Lens Shape for Focusing Light

Plano-Convex lenses are the best choice for focusing parallel rays of light to a single point. They can be used to focus, collect and collimate light. The asymmetry of this lens shape minimizes spherical aberration in situations where the object and image are located at unequal distance from the lens. The optimum case is where the object is placed at infinity with parallel rays entering lens and the final image is a focused point.

Focusing a Collimated Laser Beam

For an application example, let’s look at the case of the output from a Newport R-31005 HeNe laser focused to a spot using a KPX043 Plano-Convex Lens. This Hene laser has a beam diameter of 0.63 mm and a divergence of 1.3 mrad. Note that these are beam diameter and full divergence, so in the notation of our figure, y₁ = 0.315 mm and θ₁ = 0.65 mrad. The KPX043 lens has a focal length of 25.4 mm. Thus, at the focused spot, we have a radius θ₁f = 16.5 µm. So, the diameter of the spot will be 33 µm.

Collimating Light from a Point Source

Since a common application is the collimation of the output from an Optical Fiber, let’s use that for our numerical example. The Newport F-MBB fiber has a core diameter of 200 µm and a numerical aperture (NA) of 0.37. The radius y₁ of our source is then 100 µm. NA is defined in terms of the half-angle accepted by the fiber, so θ₁ = 0.37. If we again use the KPX043 , 25.4 mm focal length lens to collimate the output, we will have a beam with a radius of 9.4 mm and a half-angle divergence of 4 mrad.

Mounted Version - with Lens Tubes

The lenses can be mounted in LT series lens tube for constructing a complex optical system or quickly connecting to other threaded lens mounts: A-Line™ series fixed lens mount, or adjustable lens positioner (with thread adapter). Use LT-WR series spanner wrench for easy lens installation.

Calcium Fluoride Plano-Convex Infrared Lenses

Calcium Fluoride Plano-Convex Infrared Lenses

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