THORLABS SH05 Manuale utente

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.

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

Open

MOP

MSOP

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

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)

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