THORLABS SH05 User manual

SH05 and SH05/M
Ø1/2" Beam Shutters
Operating Manual

Ø1/2" Beam Shutters
Table of Contents
Chapter 1Warning Symbol Definitions ........................................... 1
Chapter 2Safety ................................................................................. 2
Chapter 3Description ........................................................................ 3
3.1.SH05BeamShutter........................................................3
3.1.1.SH05 Shutter Overview ............................................................... 4
Chapter 4Specifications ................................................................... 6
4.1.Drawing.........................................................................8
Chapter 5Regulatory ......................................................................... 9
Chapter 6Thorlabs Worldwide Contacts....................................... 10

Ø1/2" Beam Shutters Chapter 1: Warning Symbol Definitions
Rev D, March 16, 2020 Page 1
Chapter 1 Warning Symbol Definitions
Below is a list of warning symbols you may encounter in this manual or on your
device.
Symbol Description
Direct Current
Alternating Current
Both Direct and Alternating Current
Earth Ground Terminal
Protective Conductor Terminal
Frame or Chassis Terminal
Equipotentiality
On (Supply)
Off (Supply)
In Position of a Bi-Stable Push Control
Out Position of a Bi-Stable Push Control
Caution: Risk of Electric Shock
Caution: Hot Surface
Caution: Risk of Danger
Warning: Laser Radiation
Caution: Spinning Blades May Cause Harm

Ø1/2" Beam Shutters Chapter 2: Safety
Page 2 TTN012375-D02
Chapter 2 Safety
WARNING
Extremely high powered lasers will create a safety hazard and cause damage to
this product. The shutter for this product was tested with high power laser
sources at wavelengths of 532 nm and 1064 nm. The point at which damage to
the shutter surface occurred is given in the chart below. If the damage to the
shutter surface occurs and bare aluminum is present, then unwanted and
dangerous reflections can occur. Be aware not to exceed the given limits when
focusing the beam; damage to the unit may occur at a lower power level than
given in the table below when using focusing optics.
Wavelength Damage
Threshold Spot Dia. Exposure Incidence Angle
532 nm 1500 W/cm2 730 μm 10 sec/site 0°
1064 nm 20 000 W/cm2 950 μm 10 sec/site 0°
WARNING
Safety Eyewear is recommended whenever working with laser beams. While
working with laser beams in conjunction with this shutter, dangerous situations
can occur if the shutter is open while the laser beam is on. It is recommended
that the shutter remain close while making adjustments to a laser set up and the
proper eyewear should always be worn while operating lasers.
WARNING
This product operates at a sound level near or slightly above 70 dB. During
operation at 25 Hz the sound level was measured to be 71 dB at a distance of 1
meter.
ATTENTION
Caution is given when there is a possibility of damage to the product. This
product was not assessed to ISO 61508 which is a Safety Equipment Standard.
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Ø1/2" Beam Shutters Chapter 3: Description
Rev D, March 16, 2020 Page 3
Chapter 3 Description
3.1. SH05 Beam Shutter
The SH05 is a rotary, electro-mechanical actuator to provide sub-millisecond
shutter operation. In general operation, the shutter remains in a closed position
and then opens with a pulse control signal. As long as the control voltage to the
shutter remains high, the shutter will stay open; however, if the voltage suddenly
decreases, the shutter will close, providing inherent “fail-safe” operation. An optical
sensor, which detects the shutter blade's position within the housing, confirms the
state of the shutter position, making it ideal in applications where a laser safety
lockout is required. The rate at which the device is opened can be controlled. The
unit has a 0.50-inch aperture opening and is compatible with the Thorlabs SM05
mounting system.
The input aperture of the SH05 is threaded with Thorlabs' SM05 (0.535"-40) thread
to interface easily with all of our SM05 lens tubes. The SH05 comes with 8-32
tapped holes for mounting to our imperial Ø1/2" posts. The SH05/M comes with
M4 tapped holes for mounting to our metric Ø1/2" posts. All shutters come with a
10' cable to connect the shutter directly to the SC10 Controller (sold separately).

Ø1/2" Beam Shutters Chapter 3: Description
Page 4 TTN012375-D02
3.1.1. SH05 Shutter Overview
The SH05 shutter contains a rotary solenoid presenting a large inductive load to
the controlling device. As this inductor is charged, the resulting movement of the
actuator takes a finite amount of time (opening of the shutter). Conversely when
the voltage is removed from the shutter it takes a finite time for the inductor to
discharge and for the mechanics to release the actuator (close the shutter). The
shutter timing varies and is dependent on the duration and magnitude of the driving
pulse and the magnitude of the sustaining hold voltage.
The SC10 provides a 5 millisecond 24 V driving voltage to actuate the shutter and
a holding voltage of 10 Volts. The timing for the SH05 is characterized below when
operated with the SC10 controller.
Figure 1 SH05 Timing Driven by Thorlabs SC10 Shutter Controller
Close
Open
MOP
TI
TO
MSOP
TC
TD/R
Typical
Driving Pulse
(TTL)
Shutter
Response

Ø1/2" Beam Shutters Chapter 3: Description
Rev D, March 16, 2020 Page 5
Timing Performance
Event TIME (ms Typical)
TI 8.0
TO 3.0
TD/R 13.0
TC 4.08
MSOP* 27.0
MOP (SC10) 10
TI, Transfer Initialize: Time from the application of an energizing voltage to the
initial movement of the shutter.
TO, Transfer Open: Time for the shutter to move from 20% exposed to the 80%
exposed. This is measured across the 0.5” travel distance of the shutter.
TD/R, Transfer Dwell/Release: Time from the removal of the holding voltage or
pulse to the point where the shutter begins to close.
TC, Transfer Close: Time for shutter to close from an 80% exposure to 20%
exposure.
MSOP*, Minimum Shutter Open Time: Minimum shutter open time using the
MOP from the SC10 controller.
MOP, Minimum Open Pulse: Minimum pulse width of SC10 controller.
Note: The shutter SH05 is not meant for operation in critical timing applications.
Performance may vary from unit to unit.
Typical Performance
The SH05 is capable of operating at a sustained maximum rate of 25 Hz with a
minimum on time of 10 ms. As programmed exposure times (open times) increase
to beyond 20 ms the dominant characteristics of magnetic distortion, TI, and TD/R,
as shown in Fig. 1, become constants. The net effect of this anomaly is that the
delay from the control pulse (or trigger) to the shutter opening is 5 ms, and the duty
cycle distortion incurred is ±5 ms. As an example: If the SC10 is programmed for
100 ms open and 100 ms close time, the result would be a 105 ms exposure and
a 95 ms closure on the SH05.

Ø1/2" Beam Shutters Chapter 4: Specifications
Page 6 TTN012375-D02
Chapter 4 Specifications
Thorlabs recommends that the SH05 shutter only be controlled by the use of the
Thorlabs SC10 Shutter Controller or the Thorlabs KSC101 K-Cube Solenoid
Controller.
Interface Connector
The interface connector on the SH05 is a 6-pin HRS female connector (HR10A-
7R-6SB(73)). The pin descriptions are as follows:
Pin Description
1 Monitor Opto Anode
2 Solenoid
3 Solenoid
4 Monitor Opto Cathode
5 Monitor Opto Emitter
6 Monitor Opto Collector
Figure 2 SH05 Connector
61

Ø1/2" Beam Shutters Chapter 4: Specifications
Rev D, March 16, 2020 Page 7
A schematic snippet to show the pin assignments: Typically pins 4 and 5 (cathode
and emitter) are tied to circuit ground. The anode is the anode connection of an IR
LED. This is tied to a voltage source (Vsupply) thru a current set resistor. Current
could be set to 10 mA (0.01 A), then the forward voltage for the LED is around
1.2 V. So to set the LED current the resistor value would be (Vsupply-
1.2 V)/0.01 A. The LED should be on always when the shutter is in operation.
The Collector pin is the output signal and needs a pullup resistor to an
appropriate logic supply, typically 3.3 V or 5 V. Do not use more than 5 V.

Ø1/2" Beam Shutters Chapter 4: Specifications
Page 8 TTN012375-D02
4.1. Drawing
0.50" (12.7 mm)
Clear Aperture
0.535-40 (SM05)
Thread Thru
2.65"
(67.3 mm)
2.25"
(57.1 mm)
1.33"
(33.8 mm)
0.70"
(17.8 mm)
1.40"
(35.6 mm)
1.00"
(25.4 mm)
0.70" (17.8 mm)
2.00"
(50.8 mm)
1.00"
(25.4 mm)
8-32 (M4) Thread
0.25" (6.4 mm) Deep
3 Places
HR10-7R-6S Female Receptable
0.70" (17.8 mm)
0.69"
(17.5 mm)
3.22"
(81.9 mm)
1.40"
(35.6 mm)