LST200-F40 the Smallest Optical Shutter

Optical Specifications

Aperture Diameter	4 mm
Typical Beam Diameter	2 mm
Max. Optical Power Handling	6 W
Optics Options	Aluminum or Gold
Typical Damage Threshold	Standard – 30 mJ/cm² @ 10 ns Custom – 300 mJ/cm² @ 10 ns

Performance Specifications

Open Delay Time	2 ms
Open Rise Time	3 ms
Open Total Time	5 ms
Close Delay Time	2 ms
Close Fall Time	3 ms
Close Total Time	5 ms
Min. FWHM Exposure	15 ms
Max. Repetition Rate	30 Hz

Thermal Specifications

Thermal Power Dissipation Holding Open	4.5 W
Thermal Power Dissipation, Cycling	6 W @ 25 Hz
Mounting Surface	Datum A

Custom Options

Optics Options	Aluminum or Gold
Wire Length	2 ft. maximum
Connector	Any 9-pin connector
Identification	Engraving, Labels

Electrical Drive

Power Supply	24 VDC, 1 A rating
Electrical Drive Circuit	Boost Open = 24V @ 5ms Hold Open = 10 V Delay Close = 2 ms Brake Close = 1 ms
Recommended Controller	CX4000B
Winding Resistance	22 ohms Nominal
Winding Inductance	10 mH
Position Sensors	2 Phototransistors, 5 V TTL logic
Cable/Wire Type, No., Length, Termination	26 AWG, 9 wires, 18 in., 9-pin Molex 0050579409

Wire Pin # - Color

1 – Red	Shutter Power (+)
2 – Black	Shutter Power (-)
3 – Green	Case Ground
4 – Violet	LED Anode (Open Sensor)
5 – Brown	LED Anode (Close Sensor)
6 – Yellow	LED Common Ground
4 – White	Collector (Open Sensor)
5 – Orange	Collector (Close Sensor)
6 – Gray	Emitter Common Ground

Attributes

Dimensions	2.10 in. x 0.4 in. x 1.35 in.
Weight	~6 oz.
Classification	Optical/Process
Gravity Considerations	None
Specifications Date	July 18, 2023

Description

The LST200-F40 model is our smallest optical shutter featuring two positions sensors and a 4 mm aperture. This model is designed for use as a fast process shutter and quick reaction safety interlock. The inherent speed is achieved with efficient electrical power requirement. The F40 can be used in applications that operate continuously and has been proven to perform without failure beyond a half a billion cycles. The flexing motion is achieved using our patented technology for highest reliability. The solid copper package efficiently manages thermal flow, rapidly transferring the heat load to the mounting surfaces. Our optical shutters and laser shutters are optimized for use with our CX4000B shutter driver or user-built circuits designed around 24 VDC. The user-built circuit can be a typical current driver based around 24V or 24V / PWM drive circuit, although choice of controller / user circuit can affect the shutter’s switching speeds and bounce control. See the Mechanical Drawing tab for dimensions. Also see the Application Notes in the Technical Information menu for important operational issues including thermal mounting, user-built circuits, polarization, lifetime, jitter, vacuum operation, and contamination. The F40's Input Aperture face is the ideal thermal mounting surface for high heat loads. Alternatively, the bottom surface can be used for low-moderate heat loads. Restrictions for this model include proximity to high magnetic fields and strict observance of optical power rating. Large size particle contamination could inhibit blade motion causing failure to open or close.