Pinhole Sizes

● Ø25 µm
● Ø30 µm
● Ø35 µm
● Ø40 µm
● Ø45 µm
● Ø50 µm
● Ø60 µm
● Ø70 µm

● Ø80 µm
● Ø90 µm
● Ø100 µm
● Ø125 µm
● Ø200 µm
● Ø300 µm
● Ø1 mm
● Ø2 mm

Click to Enlarge
The MPH16 input connected to
a 30 mm Cage System.

Features

16 Pinholes: Ø25 µm to Ø2 mm
Enables Quick and Repeatable Pinhole Positioning
Eliminates Need for Realignment
SMA Fiber Connector for Coupling to PMT/APD Detector
High-Precision Encoded Motor
Compatible with Our Cage Systems

Thorlabs' MPH16 Motorized Pinhole Wheel enables automated and repeatable positioning of pinholes for applications such as confocal laser scanning microscopy or scanning opthalmoscopy. The Motorized Pinhole Wheel has a chrome-plated glass disk with 16 pinholes ranging from Ø25 µm to Ø2 mm. The disk is manufactured using standard photolithography techniques and is AR coated with our standard -A coating (350 - 700 nm) to further increase the throughput of the system. An optically encoded motor provides repeatable selection between pinholes with a resolution of 10 µm, without the need for realignment. Radial positioning of the pinhole is accomplished by adjusting the focusing lens with a setscrew. The pinhole may be connected to a PC through a USB port and can be controlled using the provided DLL.

Click to Enlarge
The MPH16 with the SMA fiber connector removed for free-space output.

Click to Enlarge
The MPH16 output connected
to a 16 mm Cage System.

The input features a dovetail, which is designed to mate with our confocal laser scanning microscopy imaging systems. A dovetail adapter is provided, which allows a 30 mm Cage System to be connected to the input, as shown in the photo above. At the input, there is a 75 mm focal length achromatic doublet. The detection end has an SMA fiber connector for efficient collection of the spatially filtered light. The face of the fiber is located 1 mm from the back side of the glass disk. Light emerging from the pinhole travels through the glass, which has a thickness of 0.5 mm and an index of refraction of 1.5255 (Abbe Number V_e = 55). While our standard pinhole wheel features an SMA fiber connector, other connectors are available upon request; please contact Imaging Sales for details. The SMA fiber adapter may be removed (see photo to the left) using an SPW801 spanner wrench to expose internal SM05 (0.535"-40) threading, which is compatible with our Ø1/2" Lens Tubes. Additionally, the output aperture is surrounded by four, 4-40 tapped holes for compatibility with our 16 mm Cage System, as shown in the photo to the right.

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Posted Comments:

Poster: james.parker

Posted Date: 2013-02-08 07:24:52.417

Is the focussing onto the pinhole (distance between lens and pinhole) adjustable? The text only describes radial positioning of the lens. Thank you.

Poster: cdaly

Posted Date: 2013-02-20 14:53:00.0

Response from Chris at Thorlabs: Thank you for your inquiry. The lens remains fixed but the set screw described in the text translates the internal pinhole assembly itself between the lens and fiber tip, along the optical axis.

Poster: tcohen

Posted Date: 2012-07-10 11:18:00.0

Response from Tim at Thorlabs: The lens used is our AC127-075-A (f=75mm). This product has had a recent modification and will have the ability to convert the SMA output to an SM05 output. There is also 16mm cage compatible mounting features which can be adapted to the 30mm cage with the SP05 cage adapter. We would like to discuss this product with you and we will contact you directly to continue this conversation.

Poster: martin.vogel

Posted Date: 2012-07-09 17:28:49.0

Hello, cool product indeed! May I ask two questions? 1) What is the effective focal length of the focusing lens in the MPH16? 2) Would it be possible to get the MPH16 with a free space *exit* port (no fiber connector) that is compatible to the 30mm cage system? Many thanks in advance!

Poster: tcohen

Posted Date: 2012-02-27 14:09:00.0

Response from Tim at Thorlabs: Here are some updates to your questions. 1. The pinhole wheel is a thin glass substrate coated with pinholes patterns. There is also a BB AR coating to reduce the reflection in 350 ~ 700 nm. The multimode fiber is place on the other side of the glass wheel. The fiber is place as close as possible to the wheel but usually leaving a 1 mm space. So the distance from the pinhole to the fiber end includes 0.5 mm in the glass and 1 mm in the air. The refractive index of the glass substrate is Ne=1.5255, Abbe number Ve=55. 2. Currently the SMA connector is the only mounting fixture for light collection. Special mounting holes are possible upon request. 3. There are DLLs to drive the pinhole wheel through a USB serial port. Software API with Labview demo will be available soon. 4. Azimuthal positioning is accomplished by an optically encoded motor which provides a resolution of 10 um along the circle. 5. Radial positioning is accomplished by adjusting the focusing lens with a set screw.

Poster: tcohen

Posted Date: 2012-02-24 10:10:00.0

Response from Tim at Thorlabs: Thank you for your feedback. Our design team has seen your questions and we will post an update with information soon. If you have any further questions in the meantime, we can assist you directly at techsupport@thorlabs.com.

Poster:

Posted Date: 2012-02-24 09:26:00.0

Cool product, would like to use for non microscopy application. Here again, i also need to know how repeatable? And where is the pinhole located with respect to the external surfaces.

Poster:

Posted Date: 2012-02-22 23:35:29.0

What is the distance the fiber would be from the pinhole or is there an imaging setup that launches the light from the pinhole into a fiber? Can this be ordered without the SMA connector so that the light passing through the pinhole can be used with a free space spectrometer? How does the software control which pinhole is being used is there a manual override or controller box option? Are there Labview drivers? Can the positioning of the pinhole be as accurate as what is accomplished with say the ST1XY-D? All that being said I really like this product as a concept and I hope it meets what we are looking for.

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Pinhole Sizes

Features