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J10919 SERIES

J10919 SERIES

Product catalog summary

Overview: The J10919 series Fast-Axis Collimating (FAC) lens is designed to collimate light from a semiconductor laser (LD) in the fast-axis direction. This collimation is crucial as LDs have a large divergence angle, making the light inefficient unless collimated. The FAC lens narrows the beam to a radiation angle of several milliradians or less, enhancing light utilization.

Features:

Aspheric micro-cylindrical lens design.
Efficient light utilization from LD.
Consistent characteristics suitable for mass production.
Minimized smile and side lobes due to precise fabrication technology.

Specifications:

Type Numbers: FAC300, FAC610, FAC920.
Wavelength Area: 790 to 990 nm.
Numeric Aperture (NA): Ranges from 0.50 to 1.50.
Material: High refractive index glass with a refractive index of 1.809 at 915 nm.
Effective Focal Length (EFL) and Back Focal Length (BFL) vary by model.
Dimensions (Height, Width, Length) and efficiency details are provided for each model.

Customization Options: The lens can be customized by changing the wavelength area, focal length, and length. Contact Hamamatsu for modifications.

Contact Information: Hamamatsu Photonics provides contact details for various global offices, including the USA, Germany, France, UK, North Europe, Italy, China, and Taiwan.

Catalog excerpts

FAC LENS OPTICAL (Fast-Axis Collimating Lens) LENS J10919 SERIES OVERVIEW The J10919 series FAC lens is an optical lens that collimates light spreading from a semiconductor laser (LD) in the fast-axis direction. LD have a large divergence angle in the fast-axis direction, so the output light cannot be efficiently used unless collimated. The FAC lens collimates light spreading from a LD into a narrow beam with a radiation angle of several milliradians (mrad) or less so that the diverging light can be efficiently utilized. COLLIMATING LIGHT Radiation angle spreading in elliptical cone shape FAC lens Laser emitting point Laser emitting point FEATURES ●Aspheric micro-cylindrical lens ●Highly efficient utilization of light from LD ●Small variations in characteristics allow mass production ●Minimized smile and side lobes due to high-precision fabricating technology OUTPUT DISTRIBUTION IMAGE WHEN INSTALLED TO LD A–A' PROFILE 100 RELATIVE INTENSITY (%) Radiation angle axis RADIATION ANGLE (mrad)

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SPECIFICATIONS Parameter Type No. Wavelength area Numeric aperture (NA) Material Refractive Index at 915 nm Effective focal length (EFL) Back focal length (BFL) Height (H) Width (W) Length (L) Efficiency Transmittance DIMENSIONAL OUTLINES (Unit: mm) W OUTPUT SURFACE LASER LIGHT INPUT SURFACE * See the above specification table for L, H and W. CUSTOMIZATION ●Changing wavelength area ●Changing focal length ●Changing length Please feel free to contact us for modification. Subject to local technical requirements and regulations, availability of products included in this promotional material may vary....

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