OPTO-MECHANICAL PRODUCTS
Filter Wheel -- Coarse Positioner kits --
Low Profile Positioner--Antivibration Stands

Filter Wheel.
This inexpensive, manually operated filter wheel can hold up to 6 optical filters or apertures. Each filter (25 - 25.4 mm diameter, 3-6 mm thick, clear aperture 22 mm) is fixed in the wheel by two M3 screws. 84 mm diameter wheel is supported by 55 mm long arm with two mounting holes: M5 threaded hole for vertical mounting and D=6.5 mm hole for horizontal mounting.  Magnetic lock reliably holds wheel in a selected position and provide smooth operation when wheel is moved to another position.

Part # FW-6-25


Coarse Positioners.
When high precision is not required, these inexpensive positioners could be as good as much more expensive ones.  Designed for mounting on a standard Optical Bench Plates these positioner provide 1.3 mm/turn movement of various devices.  Everything you need for vertical mounting is included and partly assembled: two Mounting Posts; one Parallel Connector; Worm drive (1/4-20 tpi); one Flat Connector and misc. hardware.  Angle connector(s) required for horizontal positioning need to be ordered separately.
 
Part #
CP-51
CP-52
CP-101
CP-102
CP-151
CP-152
Travel (mm)
27
27
77
77
127
127
WxHxL (approx. mm)
50x20x75
75x20x75
50x20x125
75x20x125
50x20x175
75x20x175
Platform type
PRC-1
PRC-2
PRC-1
PRC-2
PRC-1
PRC-2
Angle Connect.
for horiz. mount.
AC-2
AC-3
AC-2
AC.-3
AC-2
AC-3
Low Profile Positioners.
This positioners can be easily assembled at any standard (1" =25.4 mm square pattern) optical table or bench plate.  Central rail has a number of 3.5 mm diam. holes, separated by 1/2" (12.7 mm) distance, for mounting of various components.  Side rails have 6.5 mm holes separated by 1", for bench plate mounting.  Rails profile (see photo below) enable smooth linear movement of central rail between side rails with minimum side and up/down deviation. Rail set includes four 1/4-20 tpi mounting screws.  To assemble positioner shown in the photograph above you will also need bench plate micrometer (Part # BPM-60) shown on the right side of the picture.  It provide approx. 25 mm linear movement of central rail with resolution ~1 mm per turn.  If longer linear movement is desired this part can be modified according to your requirements.  BPM-60 comes with all the nessesary hardware for mounting and coupling with central rail.
 
Length
# of holes in side rail
# of holes in central rail
SRK-3
75 mm  (3")
3
5
SRK-6
150 mm (6")
6
11


Antivibration Stands

These compact, inexpensive pneumatic vibration insulation stands were originally designed for our BLM setups. They are also suitable for other light/medium weight devices such as precision balances or bench plate mounted optical systems. Two versions are available. VIS-4 is more flexible and provide exellent suppression for both vertical and horizontal vibrations. VIS-3 is more rigid but can support heavier loads than VIS-4. In most cases you will need 4 identical stands but heavy loads or long platforms may require 6-8 stands.  All models are build around air filled corrugated rubber tube, closed at both ends.  Bottom closure has barbed tubing connector and attached filling tube with ball valve. Any source of low pressure gas (air, N, Ar, CO2, etc.) can be used for filling; if none is available you can use a manual syringe pump (Part # SP-1). Top closure has thread for mounting to a bench plate.  This simple design has vibration insulation properties much better than any rubber or other polymer stands often used for the same purpose. (Compared to commonly used “Sorbothane” stands, ours have about 3-5 times lower compression module).  In addition, these stands can be easily converted into much more efficient vibration insulation systems with vibration suppression close to this parameter of a regular air tables. This is achieved by relatively simple modification of the basic model – connection of the air volume in the stand to a large capacity reservoir.  This modification decreases compression module several fold and greatly improves vibration insulation parameters of the stand. VIS-XS systems include four stands, set of flexible vinyl tubing, tube fittings/connectors and four air reservoirs.  Tubing length allows placing reservoirs in a convenient location about 3-4 feet (1m) from stands.  If you already purchased VIS-X stands you can convert them into "S" model with VKK-1 conversion kit.  Kit includes all mentioned above hardware for four stands and assembling instructions.
Parameter
VIS-3, VIS-3S
VIS-4, VIS-4S
Recommended Maximum Load (per stand, kg/lb)
2/4.4
1.5/3
Compression module, vertical (mm/N)
0.1+/-0.02 
(0.5+/-0.05 for "S")
0.15+/-0.03
(0.6+/-0.07 for "S")
Compression module, horizontal (mm/N)
0.4 +/- 0.05
1 +/- 0.1
Air loss (% /24 hr)
< 3
< 3
Dimensions (H x D, mm)
70 x 55
80 x 55
Mounting Thread
1/4-20 x 1/2"
M8 x 15 mm

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OMmisc.html    02-05-2008