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Reference Terms

  • Aperture Size

    • A shutter's opening or aperture is specified in mm. Vincent Associates provides a number of aperture sizes and shutter types depending on the customer's application, environment, speed drive capability, etc.
  • Aperture Type

    • A shutter's opening or aperture is specified in mm. Vincent Associates provides a number of aperture sizes and shutter types depending on the customer's application, environment, speed drive capability, etc. See the shutter’s download section for additional drawings and timing data concerning this option. As with the normally closed option the normally open option can be selected for standard or D880C driver. The D880C or “E” stop option would be added to the part number for customers wishing to operate the selected shutter with the D880C driver. This modification will provide the shutter device the capability of proper operation with the D880C driver. It is strongly recommended that this option be chosen when using the selected shutter with the D880C. Without this option, premature stiction will occur in most applications.
  • Bi-Stable

    • Bi-stable shutters are those devices, which only require power to change state. These type devices do not have a default state. These devices are controlled with an H Bridge type driver, which allows reversing the voltage to change the state of the device. Typical H Bridge type drivers are the VDM1000, VDM1000B and the ED12DSS.
  • Blade Coating

    • Vincent Associates offers a number of blade coatings depending on your application. Our standard coating is black Teflon® coated on stainless steel. For higher powered light sources we use AlSiO (z) or AlMgF2 (zm) reflective coating over a BeCu substrate. Shutters used for infrared non-uniformity correction utilize a highly emissive (>90%) matte black coating. Blade Finish.
  • Blade Finish

    • The following are available blade finishes that can be ordered on-line:
      • "T" Black Teflon® over a stainless steel substrate
      • "Z" AlSiO coating over a BeCu substrate
      • "ZM" AlMgF2 coating over a BeCu substrate

    • The following are available by special order (not available for purchase on-line, please contact a technical representative):
      • "S" Polished stainless steel surface
      • "M" Polished BeCu surface
      • When using UNIBLITZ® shutters with coherent and non-coherent light sources (such as lasers or high power lamps, as used in microscopes) the power output from these sources may require the need to protect the Shutter's blade surface from the source's damaging effects. To accomplish this, UNIBLITZ shutters are available with optional reflective blade finishes/coatings on the shutter's input side. The standard finish is black Teflon® ("T") over a stainless steel substrate - this black surface is on both blade surfaces. In addition to this standard "T" finish, a polished stainless steel ("S") and polished BeCu ("M") finishes are offered on special order. The standard coating choices available are AlSiO ("Z") and AlMgF2 ("ZM") coatings. These coatings are coated over a BeCu substrate. These finishes and coatings are only on the input side, the opposite side will be black. When considering a coated shutter blade (over a BeCu substrate) as an option, please keep in mind that the timing specifications will differ slightly from the published specifications found in the timing section of this data sheet. Typically add 10% (for the LS series) and 30% (for the VS series) to published timing specifications with shutters equipped with coated blades, excluding the CS25, VS35 and larger apertures. (Note timing is the same for all blade finishes and coatings for CS25, VS35 and larger type shutters.) The user may also wish to review the Laser Application Reference Sheet located in the resource section. Maximum power density for "T" and "S" blades typically has been tested up to 100mW/mm². For additional information see Comparison Charts > Optical Comparison Chart at http://www.uniblitz.com/comparison-charts/optical-comparison-chart/.
  • Closing Bounce

    • Closing Bounce is the maximum amount the blades will open after the shutter has returned to the closed position. The amount specified is a percentage of the specific aperture diameter.
  • Closing Time

    • Provide the maximum allowable closing time for the shutter blades to close from a fully open position after the shutter close signal is received.
  • Connector (for CS, VS, NS, XRS)

    • The device can be equipped with 18 inch flying leads. This would allow the device to be easily wired into a customer application without the need to remove the standard connector. This is specified by the "L" designation in the part number. If this option is not chosen, the device would be terminated with its standard length harness and connector.
  • Connector (for TS, DSS)

    • The device can be equipped with 18 inch flying leads. This would allow the device to be easily wired into a customer application without the need to remove the standard connector. This is specified by the "L" designation in the part number. If this option is not chosen, the device would be terminated with its standard 4 inch flex harness terminated to a 2-pin connector. If the "L" option is chosen, a small 18 inch harness is included to plug into the 2-pin connector providing these leads.
  • D880C Driver - "E" Stop Option

    • The "E" option should be added for customers wishing to operate the selected shutter with the D880C driver. Select "Yes" to include this option. This modification will provide the shutter device the capability of proper operation with the D880C driver. It is strongly recommended that this option be chosen when using the selected shutter with the D880C. Without this option, premature stiction will occur in most applications.
  • ED12DSS Driver - "ED" Option (NSXXB versions only)

    • The "ED" option should be added for customers wishing to operate the selected NS Series bi-stable (B) shutter device with the ED12DSS driver. Select "Yes" to include this option. When using the ED12DSS driver, certain modifications are required for the bi-stable NS devices to allow proper operation. This modification is strongly recommended.
  • Encapsulated Coil - "EC" Option

    • This "EC" option should be added for customers wishing to operate their shutter within a vacuum application and where the standard actuator coil provided may not be suitable. Select "Yes" to include this option. Vacuum levels up to 10-5 Torr have been utilized with this option. In addition, to the upgrade to the encapsulated coil, a number of additional modifications are made to the shutter device to make it suitable for a vacuum application. These include but are not limited to, material substitutions and special cleaning of the components within the shutter assembly, prior to assembly. (For more information on these modifications, heat transfer considerations and lower vacuum requirements - using the ECE encapsulated coil option - contact one of our technical representatives.)
  • Housing

    • Unhoused Style
      • The uncased style is the basic configuration of the shutter and is best suited for OEM applications. Mounting can be accomplished as indicated in the specific drawings series chosen.

    • Housed Style
      • The #2 or #3 case style allows a number of mounting configurations. A 1/4-20 threaded hole is usually provided for post mounting. An optical external thread, rear side, and a number of threaded and/or clearance holes can be interfaced directly into your application or fitted with variety of specific mounting options. See the mounting specifications of the series specified for particular mounting options provided or the optional mounting systems that are available for your particular application. If you need a particular mounting option that is not in our standard list, please contact one of our technical representatives.
  • Lifetime

    • Indicate your expected lifetime in number of shutter cycles. Shutter lifetime is rated in "cycles". One cycle is full open and full closure of the shutter blades. Typical expected lifetime for standard products is about 1,000,000 cycles however certain modifications can substantially enhance this number.
  • Mount

    • Once a Housed shutter device is chosen, a "Mount" option can then be selected. From the "Mount" dropdown list provided, choose "No Mount" or the specific mount to be added to your selected shutter device. For more information on which mount to choose, see mounting systems or contact one of our technical representatives. Be advised, some mounts such as some of those associated with the VS14, VS25, and VS35 alter the overall outline of the shutter device. Please review the technical drawings under the specific "Specification" tab for more information or contact a technical representative.
  • Normally Open

    • Shutters that are required to remain open without power and close when activated are referred to as normally open shutter devices. This is not a standard configuration of the most of our shutter devices. Most uni-stable devices, the VS25S shutter type, for example, can be built mechanically to operate as a normally open device as well as electronically selected to this mode by our electronic controllers.
  • Opening Bounce

    • Opening Bounce is the maximum amount the blades will come back into the aperture when they have traveled to full open. The amount specified is a percentage of the specific aperture diameter.
  • Opening Time

    • This is the time it takes the shutter blades to travel from the fully closed position to the open position. Often referred to in the timing data as the "Transfer Time on Opening". This does not include the "Start Time". When you include the "Start Time" the opening time is then referred to as the "Total Opening Time" and this is measured from the point at which the exposure pulse signal (used to open the shutter) is received by the driver.
  • R3 High Temp Option

    • The "R3" shutter "high temperature option" is a modification to a specific shutter, which aids to minimize the effects of high ambient temperatures affecting shutter operation. I.e. for applications utilizing mercury arc lamps, lasers, and other coherent and non-coherent light sources where the shutter will be exposed to high ambient heat, we strongly recommend the "R3" enhancement. This modification was mainly designed for microscopy applications; however, it has found usefulness in other applications where the shutter is required to operate without adhesion (sticking) in the open or closed position. When ordering the "R3" option, the shutter would, in most applications be equipped with the "ZM" blade coating. However, the R3 option can be included with any blade option.
  • RoHS Compatibility - "NL" Option

    • The "NL" option indicates that the materials in the shutter comply with Restriction of Hazardous Substances Directive (or RoHS) that was adopted in February 2003 by the European Union. The "NL" option must be included on shutter part numbers to ensure that the shutter device provided meets these standards if required by the purchaser.
  • Shutter Options – Aperture Type

    • The device can be purchased in one of four configurations. The standard normally closed configuration for use with the  standard driver * and normally closed configuration for use with the D880C driver. You can also order this device in the normally open configuration. The shutter’s default position would be open and be driven closed when activated. See the shutter’s download section for additional drawings and timing data concerning this option. As with the normally closed option the normally open option can be selected for standard or D880C driver. The D880C or “E” stop option would be added to the part number for customers wishing to operate the selected shutter with the D880C driver. This modification will provide the shutter device the capability of proper operation with the D880C driver. It is strongly recommended that this option be chosen when using the selected shutter with the D880C. Without this option, premature stiction will occur in most applications.

             * Standard Drivers are VCM-D1, VCM-D3, VMM-D4, and VMM-T1.

  • Sync Option

    • The Electronic Synchronization System provides a feedback signal (through the driver utilized) after the shutter transfers to the open state. The system (except for the NS, DSS and TS series') incorporates an infrared emitting diode, an infrared sensitive detecting transistor, and an interrupting vane. The vane is attached to the shutter so as to block the light path between the emitter and detector in the closed position. When the shutter transfers to the 80% open position, the vane is removed from the infrared light path, allowing the emitter to switch the detector to the active state. The NS, DSS and TS series' incorporate a Hall Effect Proximity sensor and a sensing magnet. When the magnet activates the sensor, the shutter is set to be at an 80% open position.
  • Uni-Stable

    • Uni-stable shutters are those devices, which require power to remain in the active state. A lower hold voltage is utilized to hold the device active once a higher voltage is used to initially activate the device. These devices will return to their default state if power is lost. In most applications, shutters can be configured normally open or normally closed when purchased. The standard state is normally closed and will open when activated. A higher voltage from the driver will open the device and it will be maintained in the open position with a lower voltage. If power is lost the device will return to the closed position.

Optical Shutters: Asking the Right Questions

Posted by Stephen Pasquarella - 4/13/16

Answering specific questions can help detect the need for a shutter... Read More

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News & Tradeshows

June 26 - 29, 2017

Vincent Associates®, the manufacturer of Uniblitz® Shutter Systems, will exhibit their line of Uniblitz devices at LASER World of Photonics, Booth #547

Vincent Associates has years of experience in custom modifications as well as special electronic shutter designs. Please contact us during normal business hours to discuss your particular requirements with one of our specialists.
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