OVERVIEW
The UNIBLITZ® VS14 and VS25 shutter series have been designed to give accurate, repeatable exposures for a wide variety of applications. They have been successfully field tested in microscopy. video imaging. PMT protection, and photographic applications worldwide.
Available with either 14mm or 25mm apertures, these shutters are offered in either cased or uncased configurations. The uncased shutter allows a high degree of flexibility when mounting the unit in situations inaccessible to most shutters due to spatial limitations. The cased version of this series is very popular due to the protection the black anodized aluminum housing provides the precision shutter mechanism.
To further enhance the adaptability of this series, we offer several customized mounts and mounting systems for popular microscopes and video imaging applications.
Further enhancement to the shutter is when it is used with laser or high energy non-coherent light sources. Alternate reflective blade coatings and finishes are available. For information on typical laser damage thresholds see "OPTICAL" information in our "COMPARISON SPECIFICATION" sheet. For further information see our application note "LASER APPLICATION REFERENCE" sheet in the resource section of our web site, www.uniblitz.com.
For those applications where the shutter will be used to switch a mercury arc lamp, we strongly recommend the "R1" modification. This modification will allow the shutter to operate under the intense heat produced by mercury lamps. Additional information can be found in the specific sheet entitled "MOUNTING SYSTEMS".
FEATURES
- Two aperture sizes available.
- 14mm diameter - Model VS14
- 25mm diameter - Model VS25
- Laser energy ratings up to 10W/mm2 with "Z" or "ZM" shutter blade coating options.
- Exposure repetition rates from DC - 40Hz.
- Electronic synchronization system available.
- Housed and un-housed versions available.
- Can be equipped with the "R1" High Temperature Option.
- Normally open option available on special order.
Electrical
| SERIES |
COIL RESISTANCE |
PULSE VOLTAGE TO OPEN |
HOLD VOLTAGE1 (NOMINAL) |
| VS14 |
12 OHMS |
+65 VDC |
+5 VDC |
| VS25 |
12 OHMS |
+65 VDC |
+5 VDC |
1 Voltage level required across actuator coil when being held in the open position.
Mechanical
| SERIES |
WEIGHT UNCASED |
WEIGHT CASED |
OPERATING TEMP.
DEGREES |
MAX. OPENING BOUNCE |
MAX. CLOSING BOUNCE |
MAX. FREQUENCY OF OPERATION 1
(CONT/BURST) |
NUMBER SHUTTER BLADES |
| VS14 |
2.05 oz (.06 kg) |
10.22 oz (.29 Kg) |
0-80 o C |
15% |
5% |
10 Hz / 40 Hz |
2 |
| VS25 |
2.05 oz (.06 kg) |
10.22 oz (.29 Kg) |
0-80 o C |
15% |
5% |
10 Hz / 40 Hz |
2 |
1 CONTinuous frequency rating specified at shutter’s minimum exposure pulse. BURST frequency rating specified for (4) four seconds maximum with (1) one minute minimum between bursts. Frequency measurements are taken in free air, 25°C ambient, actuator coil equipped with heat sink. For additional information on maximum sustained frequencies obtainable, please contact one of our technical representatives.
Timing
The following chart lists typical timing values (msec.) using UNIBLITZ® drive equipment and measured with UNIBLITZ® shutters equipped with standard black Teflon® coated shutter blades.
| |
VS14 |
VS25 |
| 0-A: |
Delay time on opening after current is applied |
2.0 |
3.0 |
| A-C: |
Transfer time on opening |
1.5 |
3.0 |
| O-C: |
Total opening time |
3.5 |
6.0 |
| C-E: |
Min. dwell time with min. input pulse |
2.0 |
2.0 |
| B-F: |
Min. equivalent exp. time |
4.5 |
6.0 |
| E-G: |
Transfer time on closing |
3.0 |
5.0 |
| A-G: |
Total window time |
6.5 |
10.0 |
| MET: |
Min. exposure time |
4.0 |
6.0 |
| TEP: |
Typical exposure pulse |
>6.5 |
>8.0 |
The question regarding enhancement of shutter speed with the application of user supplied lubricants has been repeatedly asked. It is our experience that lubricating the shutter blades will actually slow the shutter down and eventually render the shutter inoperable. UNDER NO CIRCUMSTANCES SHOULD ANY TYPE OF LUBRICANT BE APPLIED TO THE SHUTTER BLADE AREA.
Unhoused Style
The VS14/25 uncased style is the basic configuration of this series and is best suited for OEM applications. Mounting can be accomplished through seven 2.5mm holes around the unit’s outer perimeter. The unit terminates to a 7-pin male in-line connector through a six-inch cable assembly.
Housed Style
The VS14/25 #2 case style allows a number of mounting configurations. A 1/4-20 threaded hole is provided for post mounting. The 1.625in x 40TPI external thread, rear side, and the six 2-56 threaded holes, front side (Figure 3), can be interfaced directly into your application or fitted with variety of specific mounting options. See "MICROSCOPE & VIDEO MOUNTING SYSTEMS" data sheets for additional information. The unit terminates with a 7-pin male connector.
Housing/Connector Layout
This drawing illustrates 7-pin connector and 1/4-20 threaded hole layout for the VS14/25 series #2 case style.
| Part Number Example: |
|
| VS25S 2 ZM 0 R3 -100 |
|
| Aperture Size |
Housing |
Blade Finish |
Electronic Sync. |
High Temp Mod |
Mounting Options |
VS14S - 14mm
VS25S - 25mm |
1 - Un-housed
2 - #2 Housing |
T - Teflon® Coated S.S. Blades
S - Polished Stainless Steel Blades*
ZM - AlMgF2 Coated BeCu Blades*
Z - AlSiO Coated BeCu Blades* |
0 - Omit Sync.
1 - Electronic Sync. Included |
R3 - High Temp Modification (Omit R3 Designation if Not Required) |
-21 Zeiss Axiovert Type
-22 Nikon SBX type
-23 Olympus BH/IMT type
-24 Olympus BX/IX type
-26 Leica Type
-27 Nikon Type
-28 Olympus IX Transmitted Type
-29 Nikon TE Type
-30 Leica DM/DMIR/DMIRB Type
-31 Nikon Confocal Type
-32 Nikon 80i Type
-100 Mounting Ring
-105 C-Mount Adapter (Male)
-106 C-Mount Adapter (Female)
-110 T-Mount Adapter
-17 VS14/25 F-C Video Adapter |
|
*Input side only, Teflon® coating is on opposite side. Intended to protect the shutter blade surface, light source must be input to the reflective side only.