New Mirror Mount, ULTIMA®, Center, 5.0 in. Diameter, No Actuators

The U500-AC ULTIMA® Large Mirror Mount uses soft-tip optic set screws to gently, but securely, hold high precision 5 inch (127 mm) diameter optics from three points on the back against the front plate of the mount. The U500-AC is compatible with optics between 11 and 31 mm thick. The U500-AC can also be used with the
Test Results - Minimized Distortion
Interferometric testing results show the flatness of the mirrors held in these mounts, measure at 0.100 wave PV (peak to valley). Compare this to mirrors held in a mount with a nylon-tipped set screw where the flatness degrades to 0.600 to 0.800 wave PV. An unconstrained 1/10th wave mirror will typically measure 0.090 wave PV.
Many Actuators - One Mount
The ULTIMA's industry-standard clamp design allows many different types of actuators to be used to adjust the mirror position to meet the requirements for any application. Actuators can be replaced with ease by simply loosening two screws to allow the actuator to gently slide into and out of the mount. ULTIMA mounts are compatible not only with standard knob and hex-key adjustment screws, but also with micrometers and motorized actuators. See our Recommended Compatible Actuators in the Accessories section below.
Versatile Mounting Options
The included mounting base plate not only allows the Large ULTIMA® mounts to stand on their own, but also features thru holes for 1/4-20 (M6) for secure mounting to pedestals and posts (
Large Range of Optic Thicknesses
The U500 includes reversible optic mounting brackets which allows it to be compatible with a large range of optic thicknesses. In one orientation, these brackets can accommodate optics 11 - 20 mm thick and when reversed, the brackets can hold optics 21 - 31 mm thick. For optics thinner than 11 mm, the optional
Specifications
- TypePrecision
- MechanismKinematic
- Optic Diameter127.0 mm
- Number of Actuators0
- Actuator DriveNot Included
- z, θx, θy
- Actuator OrientationRight-handed
- Optic LoadingRear
- MaterialAluminum
- Not Included
- Optical Axis Height88.9 mm
- Optic Thickness11 to 31 mm
- Optic MountingLow Wavefront Distortion
- Weight687 g
Resources & Downloads
3D Product Models
Other
UX00-AC EU ROHS3 2025(273.2 kB, PDF)
2D Product Drawings
U500-AC Drawing(200 kB, PDF)
Manuals
U500 Mount Quick Start Guide(721.4 kB, PDF)






