This is the predecessor to the F-1015LD

As per the Newport website:

The F-1015LD Precision Single-Mode Fiber Coupler uses a steering lens to achieve 0.1 micron resolution in a compact package. This coupler is very easy to use. An input iris assists in centering the laser beam. The beam passes through a steering lens, which is mounted in a precision X-Y translation assembly with 100 pitch adjustment screws. An objective lens focuses the beam on the fiber core. Translating the steering lens causes a second-order translation of the focused beam across the fiber end-face, providing 0.1 micron beam positioning resolution with negligible changes of incident angle at the fiber face. For use with laser diodes, the F-1015LD has a steering lens that is AR coated for high transmittance at 850, 1300, and 1550 nm. It comes equipped with an F-L10B Laser Diode Objective Lens and has an effective focal length of 12 mm. This coupler is constructed of anodized aluminum and is sold without fiber chucks. The FPH-J four-jaw fiber chuck with Teflon liner for fibers less than 250 microns in diameter, and the FPH-DJ Delrin-jawed chuck for fibers 250 microns to 1 mm in diameter are the bare fiber chucks of preference. The FPH-S and FPH-S-2.5 slotted fiber chucks can also be used.
BMI Surplus, Inc. is here to help you with any questions or with any help you may need with completing your purchase. Buy online or give us a call at 781-871-8868.
*Freight fees are dependent on your location. We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
***MPN F-1015LD-DJ
***OEM Newport Research Corp (NRC)
***SKU*** 2525