Large-Area Rotation Stage
Features- 360° Continuous, Hand-Operated Rotation
- Choice of 3 Sizes: Ø6" (Ø150 mm), Ø12" (Ø300 mm) or Ø18" (Ø450 mm)
- Standard 1/4"-20 (1" Pitch) or M6 (25 mm Pitch) Hole Patterns
- Standard Breadboard Deck Height: 0.5" (12.7 mm)
- Position Locking Mechanism
- Black Anodized Aluminum Construction
These Large Area Rotating Breadboards are available in a choice of three sizes with standard 1/4"-20 (1" pitch) or M6 x 1.0 (25 mm pitch) hole patterns: Ø6" (Ø150 mm), Ø12" (Ø300 mm), or Ø18" (Ø450 mm). The working height is 0.5" (12.7 mm), which is the same as that provided by our standard MB series breadboards. They have been designed for use in applications requiring coarse angular adjustment of optical assemblies. The Ø91 mm (Ø3.58") center section of the rotating breadboard can be removed, allowing components to be placed in that location and the board to be rotated around them (see photo to the right). A laser-etched scale around the edge of the rotating surface has 1° graduations. Positioning is achieved by simply rotating the platform by hand.
The breadboard features a dovetailed edge and three lockable kinematic mounts, that can be positioned anywhere around the perimeter. The mounts also incorporate slotted holes that together with their adjustable positioning, allow flexibility when the breadboard is secured to an optical table or other work surface. The image above shows a prism spectroscope built using the RBB12A; for more information on this application, please see the Application Idea tab. The Ø91 mm (Ø3.58") middle section of the breadboard can be replaced with an adapter (RBBA1(/M), available separately) that features an SM1-threaded (1.035"-40) central aperture. By mounting the rotation stage on posts, this adapter allows light to be directed upwards from a mirror mounted underneath the breadboard surface. Optics can then be mounted on the insert for use in a variety of applications. The image right shows the RBB12A rotation stage with the RBBA1 adapter fitted. A laser beam is directed onto a mirror mounted underneath the rotating breadboard. The mirror deflects the beam through the aperture in the RBBA1 adapter and onto a second mirror that directs the beam onto a detector.
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| Item # | RBB6A and RBB150A/M | RBB12A and RBB300A/M | RBB18A and RBB450A/M |
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| Travel Range | 360° Continuous | | Working Height | 0.5" (12.7 mm) | | Load Capacity (Max) | 20 kg (44 lbs) | | Taps | RBB6A, RBB12A and RBB18A: 1/4"-20 on 1" Pitch
RBB150A/M, RBB300A/M and RBB450A/M: M6 on 25 mm Pitch | | Max Vertical Run Out Over Full Travel | 25 μm | 50 μm | 75 μm | | Max Horizontal Run Out Over Full Travel | 25 μm | 50 μm | 75 μm | | Overall Dimensions (Excluding Clamps) | Ø6.64" (164 mm) | Ø12.4" (314 mm) | Ø18.27" (464 mm) | | Platform Dimensions | Ø5.91" (150 mm) | Ø11.8" (300 mm) | Ø17.72" (450 mm) | | Weight | 1.76 lb (0.8 kg) | 5.5 lb (2.5 kg) | 6.6 lb (3.0 kg) | | Construction | Solid Aluminum | | Finish | Black Anodized |
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Prism Spectroscope
A prism spectroscope is an instrument often used in undergraduate optics labs to measure the wavelength of atomic vapor transitions. In our version of this classic experiment, we image the spectrum of a white light LED (MCWHL2) using a DCU223C color CCD camera. The large mounting surface of the rotating breadboard could easily mount other components, such as additional detectors, which could then be precisely rotated into and out of the beam path. The list of components utilized in the confuguration pictured above is in the following tables (click on the item number to bring up a pop-up window with more information about that component): | Item # | Quantity | Description |
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| DC2100 | 1 | LED Driver | | MCWHL2 | 1 | Mounted White-Light LED | | SM1RC | 1 | SM1 Lens Tube Slip Ring | | CP02T | 1 | 30 mm Cage Plate, 0.5" Thick | | ER4 | 4 | 4" Long Cage Rod | | SM1Z | 1 | Z-Axis Translation Mount | | AC254-060-A-ML | 2 | Mounted Achromat (f = 60 mm) | | PS853 | 1 | Dispersive Equilateral Prism | | PM4 | 1 | Prism Mount Clamping Arm | | TR3 | 1 | Ø1/2" Post, 3" Long | | BA1S | 1 | Post Holder Base |
| Item # | Quantity | Description |
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| KM100B | 1 | Kinematic Prism Table | | CP02 | 1 | 30 mm Cage Plate | | DCU223C | 1 | Color CCD Camera | | S200R | 1 | Slit, 200 µm Wide | | SM1L05 | 2 | SM1 Lens Tube, 0.5" Long | | SM1V05 | 2 | Adjustable Length Lens Tube, 0.5" Long | | NE20A | 1 | Mounted Neutral Density Filter, OD = 2.0 | | SM1T2 | 1 | SM1 Lens Tube Coupler, External Threads | | PH2 | 3 | Ø1/2" Post Holder | | TR1 | 1 | Ø1/2" Post, 1" Long | | BA2 | 1 | Post Holder Base |
Prism Spectroscope ImagesBelow are four still images that were taken by rotating the camera on the breadboard. The plots below the graph show the relative red, green, and blue intensity of a horizontal line of pixels within the corresponding CCD image. Please note that the images do overlap each other slightly.
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Additional Manual Rotation Stages
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Rotating Optical Breadboard
