12/29/2023 0 Comments Stainless steel upright zer factory![]() Vertical features on this ruler include its edges, as well as the columns formed by different-length rulings. The relative position of the beam with respect to the reference line on the table can be evaluated by judging the distance between the laser spot and vertical reference feature on the ruler. The ruler can serve as this tool, when an edge on the ruler's base is aligned with the edges of the tapped holes that define the line (Figure 2). The alignment tool is needed to translate the reference line provided by the tapped holes into the plane of the laser beam. Orient the Beam Along a Row of Tapped HolesĪligning the beam parallel to a row of tapped holes in the table is another iterative process, which requires an alignment tool and tuning of the mount's yaw adjuster. ![]() Steering mirrors are particularly useful for adjusting beam height and orientation of a fixed laser. Alternatively, two steering mirrors can be placed after the laser and aligned using a different procedure, which is detailed in the section. If the leveled beam is at an inconvenient height, the optomechanical components supporting the laser can be adjusted to change its height. In the video for example, the beam height close to the laser was initially 82 mm, but it increased to 83 mm after the pitch was adjusted during the first iteration. More than one iteration is necessary, because adjusting the pitch of the laser mount adjusts the height of the laser emitter. Iterate until the beam height at both positions is the same. Adjust the pitch on the kinematic mount until the beam height at that location matches the height measured close to the laser. ![]() If the beam height at the two locations differs, place the ruler in the more distant position. A larger distance between the two measurements increases accuracy. Leveling the laser beam is an iterative process that requires an alignment tool and the fine control provided by the mount's pitch adjuster.īegin each iteration by measuring the height of the beam close to and far from the laser (Figure 1). Level the Beam Parallel to the Table's Surface Ensure all locking screws are tightened after the adjustments are complete. This can be done by adjusting the optomechanical components, such as a post and post holder, supporting the laser. Then, make coarse corrections to the laser's height, position, and orientation. This reduces the risk of running out of adjustment range, and the positioning stability is frequently better when at the center of an adjuster's travel range. This angular tuning capability is convenient when aligning a collimated laser beam to be level with respect to a reference plane, such as the surface of an optical table, and when aligning with respect to a particular direction in that plane, such as along a line of tapped holes in the table.įirst, rotate each adjuster on the kinematic mount to the middle of its travel range. Pitch (tip) and yaw (tilt) adjustments provided by a kinematic mount can be used to make fine corrections to a laser beam's angular orientation or pointing angle. The beam is parallel to the table's surface when measurements of the beam height near to (left) and far from (right) the laser's front face are equal. Ring-Actuated Irises. We also offer Cage System Irises for use with 30 mm and 60 mm cage systems.įigure 1: Leveling the beam path with respect to the surface of an optical table requires using the pitch adjustment on the kinematic laser mount (Figure 2). In addition to the post-mountable irises sold on this page, Thorlabs also offers SM-threaded Lever-Actuated Irises and Irises with item # prefix IDA are sold in packs of five with a bottom-located 8-32 (M4) setscrew but no mounting post. Irises without a post are available as a special by contacting Tech Support. With the exception of the Mini-Series Mounted Iris Diaphragm (ID5MS, ID5MS/M), which is mounted on a Ø6 mm post for compatibility with our Mini-Series line, and our five-pack standard iris diaphragms, all iris diaphragms listed below are mounted on a removable 3" (75 mm) long Ø1/2" post. The individual steel leaves pivot within a black-anodized aluminum housing. ![]() These lever-actuated, continuously variable iris diaphragms are designed to provide smooth operation over many thousands of cycles.
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