Powell Lenses

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A Powell Lens Affixed on a

A Powell Lens Affixed on a K6XS 6-Axis Kinematic Mount Utilizing the K6A1 Prism Mount Accessory

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Uniform Laser Line Displayed by a Powell Lens (Top) Compared to Gaussian Laser Line from a

Uniform Laser Line Displayed by a Powell Lens (Top) Compared to Gaussian Laser Line from a Cylindrical Lens (Bottom)

Key Attributes

• Purposefully crafted for Ø0.8 mm (1/e2) Collimated Input Beams showcasing Gaussian Intensity Distributions
• Divergence Fan Angle at 633 nm: 30°, 45°, 60°, or 75°
• Intensity Variation of Less Than 30% for 633 nm Input (Refer to the Specs Tab for Detailed Information)
• Coated with Antireflection (AR) for the Range of 400 nm to 700 nm

Known as laser line generating lenses, Powell Lenses create straight, consistent laser lines by spreading out collimated beams in a single dimension. The apex of each lens features an acylindric curve that evenly reallocates the optical power from a Ø0.8 mm (1/e2), 633 nm gaussian input beam into an extended line with intensity variations of less than 30% across the central 80% of the line (see the Specs tab for benchmarks). This starkly contrasts with standard cylindrical lenses that yield diverging laser lines with Gaussian intensity distributions, illustrated in the image to the right. Various fan angles including 30°, 45°, 60°, or 75° are available for selection.

To achieve an input beam diameter of Ø0.8 mm 1/e2 with a fiber-coupled light source, we suggest utilizing our F230FC-B or F230SMA-B 633 nm fixed-focus collimation packages. The use of different wavelengths or beam diameters could cause slight variances in the overall performance of the lens.

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Every laser line generator lens is constructed from N-SF6 glass, featuring a square output face. The cube-based form factor, as opposed to a cylindrical design, provides a baseline surface for aligning the output laser line. Moreover, an antireflection (AR) coating applied to the top and square output face ensures average reflectance of less than 2% per surface within the wavelength range of 400 nm to 700 nm.

Mounting Alternatives
Various mounting methods are adaptable based on the precise requirements of the application. For situations demanding a compact form, the PCM post clamp mount, when combined with the PCMP flat base adapter, facilitates placing the Powell lens at the end of a Ø1/2" optical post. Utilizing KM100C and KM100CL adjustable kinematic mounts provides necessary tip-tilt movement, aiding in the precise pointing of the input beam at the center of the Powell lens. When employing either the KM100C or KM100CL mounts, it is vital to install the lens with the fan orientation parallel to the mounting clamps to prevent beam clipping. For optimal control over directionality, the K6XS 6-axis locking kinematic mount, coupled with a K6A1 prism mounting accessory, can be employed as depicted above. Due to their compact size and square cross-section, our Powell lenses are also ideal for glue-in-place OEM applications. For more insights on the significance of accurate alignment when utilizing a Powell lens, please refer to the Application tab.

220.00 USD ' 375.00 USD

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