This is an assembly consisting of an HP 10710A Small Leveling Base on which a 45-degree fully reflecting prism has been cemented. Although the prism could have been used to deflect a beam downwards through the aperture in the base, the excess cement that covers the face of the prism adjacent to the base would preclude such use � much of the aperture is filled with cement. Therefore it was intended for use in directing a beam upwards at right-angles to the base-plate.

The prisms are very rigidly mounted. Rather than break the prisms in an effort to remove them, we have decided to offer them in the condition found. The first-surface mirror is in excellent condition, and the prisms (although exposed) have not been chipped or damaged.

Dimensions of the base are as follows.

Height = 0.5�

Width = 1.1�

Length = 1.85�

Through-bore in base = 0.5�

Prism face 20mm square

These components have been removed from various fixtures. They meet our requirements for second quality used interferometer components. All mechanical adjustments work smoothly and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, however I doubt the prisms can be removed without damaging the glass. No hardware is included other than the two screws used to secure the cradle to the base.

Location W7-A

Photo set 513
***MPN HP 10710A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP081

This item is an HP 10556A Retroreflector in the large size (2� square) mounting format found in the earlier Hewlett-Packard Laser Interferometer Distance Measurment Apparatus. There are four countersunk holes in a 1.4� face-centered pattern. The holes are countersunk on both sides of the mounting flange. The �outside� set of countersinks are used when attaching the retroreflector to one of the 105xx series of interferometers. The �inside� set of countersinks are used to secure the corner cube to the special carrier with post (HP part number 10550B).

These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included. Please note that not all of the reflectors have the plastic sleeve over the cylinder.

***MPN HP 10556A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP079

This is an HP 10722A Plane Mirror Converter window. It consists of a glass wedge that allows mounting a 10702A Linear Interferometer in a fixed position with a retroreflector attached to the moving component of a stage. It is a component in the Hewlett-Packard Laser Interferometer Distance Measurement Apparatus. The window is attachable to the 1.5� size interferometer bodies.

These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included. The only cosmetic issue with this particular window is the missing HP label with the nomenclature, hence the slightly lower price.

***MPN HP 10722A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP075

This is an HP 10722A Plane Mirror Converter window. It consists of a glass wedge that allows mounting a 10702A Linear Interferometer in a fixed position with a retroreflector attached to the moving component of a stage. It is a component in the Hewlett-Packard Laser Interferometer Distance Measurement Apparatus. The window is attachable to the 1.5� size interferometer bodies.

These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included.

***MPN HP 10722A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP074

This item is an HP 10567A Dual Beam Beam-Splitter. This is a rather elaborate component in the Hewlett-Packard Laser Interferometry Dimensional Measurement System. It is intended for use with two axis stages. There is a single 45-degree diagonal mirror mounted within the block, but it is not face-centered. The mirror has three �zones� of reflectance (or transmission), and three apertures on the side of the block facing the laser source. The lowest aperture is uncoated so the entire beam passes straight through the block The central aperture is where the source laser enters the block. The substrate at that point has a 50% coating, so half of the energy is reflected to the top on the block, and the remainder passes straight through. The upper aperture (on the side facing the laser) has a 100% mirror � all the light flux is diverted at right angles.

The outer two apertures on the side facing the laser are intended for the return beams from the interferometer bodies in each axis. The receivers may be placed on the same side of the block as the laser source. This is very useful when there are space constraints.

These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included.

***MPN HP 10567A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP064

This item is an HP 10700A 33% Beam Splitter. It is a basic component of the Hewlett Packard Laser Interferometry Distance Measuring Apparatus. It is one of several components based on a 1� steel cube. The cube has a beam-splitting reflector set at 45-degrees and face-centered to three adjacent faces. The mirror surface is coated. These components are useful when it is desired to have three axes tied to a single laser (each axis will require its own interferometer and detector, however). The first beam-splitter in the system would be the 33% splitter, leaving roughly 66% of the beam to travel to a second 50% beam-splitter for the other two axes. In that manner each receiver will be working at approximately the same power level.

The angle of the beam-splitter is not critically set within the cube in order to keep component prices reasonable. For precise positioning it is recommended that the beam-splitter is fixtured using a small leveling base (HP 10710A). These mounts allow for corrections in two directions. Pitch may be adjusted through several degrees about the axis of the mirror component by resetting the cradle position in the base, and yaw may be adjusted using the play in the elongated slots for securing the base. The base of the mount has an open aperture so the beam path may be directed through the base of the fixture. Beams should ONLY be deflected at right angles in each laser / detector assembly in order to avoid depolarization of the laser beams. Beams can be deflected through an aperture in the base of the mount for utmost versatility.

These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included.

***MPN HP 10700A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP057

This item is an HP 10701A 50% Beam Splitter. It is a basic component of the Hewlett Packard Laser Interferometry Distance Measuring Apparatus. It is one of several components based on a 1� steel cube. The cube has a beam-splitting reflector set at 45-degrees and face-centered to three adjacent faces. The mirror surface is coated. These components are useful when it is desired to have two axes tied to a single laser (each axis will require its own interferometer and detector, however).

The angle of the beam-splitter is not critically set within the cube in order to keep component prices reasonable. For precise positioning it is recommended that the beam-splitter is fixtured using a small leveling base (HP 10710A). These mounts allow for corrections in two directions. Pitch may be adjusted through several degrees about the axis of the mirror component by resetting the cradle position in the base, and yaw may be adjusted using the play in the elongated slots for securing the base. The base of the mount has an open aperture so the beam path may be directed through the base of the fixture. Beams should ONLY be deflected at right angles in each laser / detector assembly in order to avoid depolarization of the laser beams. Beams can be deflected through an aperture in the base of the mount for utmost versatility.

These components have been removed from various fixtures. They meet our requirements for second quality used interferometer components. All optical surfaces are free of serious blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear in very fine condition, although not new. Unlike new components, no hardware is included.

***MPN HP 10701A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP056

This item is an HP 10701A 50% Beam Splitter .It is a basic component of the Hewlett Packard Laser Interferometry Distance Measuring Apparatus. It is one of several components based on a 1� steel cube. The cube has a beam-splitting reflector set at 45-degrees and face-centered to three adjacent faces. The mirror surface is coated. These components are useful when it is desired to have two axes tied to a single laser (each axis will require its own interferometer and detector, however).

The angle of the beam-splitter is not critically set within the cube in order to keep component prices reasonable. For precise positioning it is recommended that the beam-splitter is fixtured using a small leveling base (HP 10710A). These mounts allow for corrections in two directions. Pitch may be adjusted through several degrees about the axis of the mirror component by resetting the cradle position in the base, and yaw may be adjusted using the play in the elongated slots for securing the base. The base of the mount has an open aperture so the beam path may be directed through the base of the fixture. Beams should ONLY be deflected at right angles in each laser / detector assembly in order to avoid depolarization of the laser beams. Beams can be deflected through an aperture in the base of the mount for utmost versatility..
These components have been removed from various fixtures. They meet our requirements for first quality used interferometer components. All optical surfaces are free of blemishes and there are no gouges or distortions in any of the parts that would in any way impede accuracy of measurements. Cosmetically these components appear only lightly used, if not new. Unlike new components, however, no hardware is included.

***MPN HP 10701A
***OEM Hewlett Packard ( HP ) / Agilent
***SKU*** DP055