Mirror Mount, Classic, Corner, 2.0 in., 3 Locking Allen-Keys
The 9852-L Locking Classic Corner Mirror Mount centers a 2.0 inch (50.8 mm) diameter optic at the fourth corner of the square formed with the three adjustment screws, allowing you to get tilt, tilt without translation, and pure translation all in a single mount. For pure translation, simply turn all knobs the same amount. A 1° rotation in one knob results in only 0.0012° tilt in the face plate. For tilt without translation, use two knobs, or for applications when translation is less important, adjust the tilt with just one knob. The proprietary, precision, knob actuated 1/4-80 screws give you increased durability, better repeatability, and even more precise adjustment than comparably priced mounts. Because the optic sits close to the edge of this mount, it is ideal for applications where clearance is an issue. The 9852-L is designed to hold mirrors, lenses or beam splitters having a 2-in. or 50 mm diameter and, due to its threaded retaining ring and spacers, can hold mirrors as thick as 0.50 in.(12.7 mm) and as thin as 0.02 in.(0.5 mm).
Gimbal or Kinematic Movement
With a corner mount, the center of the mirror is intentionally located at the xy intersection of the pitch and yaw adjusters, i.e., at the virtual fourth point of the square formed by the ball points of the three actuators. To achieve gimbal movement, two adjacent adjustment screws must be actuated the exact same distance. For gimbal pitch adjustment, the adjuster normally used for yaw adjustment must be actuated along with the corner adjuster the exact same distance. For gimbal yaw adjustment, the adjuster normally used for pitch adjustment must be actuated along with the corner adjuster the exact same distance. In this way, the mirror is being rotated about two virtual axes that intersect at the center of the optic, aka gimbal movement. Adjust one actuator at a time and the mount acts as a standard kinematic optical mount. Adjust all three actuators to translate the optic in Z-axis.
Sapphire Kinematic Pads
Sapphire kinematic pads create contact surfaces for the adjustment screws that have very low friction and will not will not dent under normal use. Sapphire ensures excellent
adjustability and stability.
More Space Between Optic and Adjuster
Another benefit of the corner mount design is the additional space between the optic and the adjustment knobs. This allows for sharper beam splitting angles and easier access to the adjustment screws.
Allen-Key Adjustment
All of Newport's Industrial mounts have Allen-key adjustments to save space and prevent unintended adjustment.
Thread-matched Adjusters
Since grease can migrate, causing long-term creep, these mounts are exclusively fitted with thread-matched adjustment screws which need almost no grease. The result is actuators that have very smooth movement, and mounts with exceptional long-term and thermal stability.
Specifications
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Mechanism
Kinematic
-
Optic Diameter
50.8 mm
-
Number of Actuators
3
-
Actuator Locks
Yes
-
Adjustment Screw Thread
80 TPI
-
z, θx, θy
-
3.6 arc sec
-
Angular Range
±4°
-
Optic Loading
Rear
-
Material
Anodized Aluminum
-
Allen-Key, locking
-
Thread Type
8-32 (M4) CLR
-
Optical Axis Height
50.8 mm
-
Optic Thickness
12.7 mm
-
Special Features
Low-Stress Mounting
-
Mechanism
Kinematic
-
Optic Diameter
50.8 mm
-
Number of Actuators
3
-
Actuator Locks
Yes
-
Adjustment Screw Thread
80 TPI
-
z, θx, θy
-
3.6 arc sec
-
Angular Range
±4°
-
Optic Loading
Rear
-
Material
Anodized Aluminum
-
Allen-Key, locking
-
Thread Type
8-32 (M4) CLR
-
Optical Axis Height
50.8 mm
-
Optic Thickness
12.7 mm
-
Special Features
Low-Stress Mounting