Temperature-Controlled and Heat-Sink Lens Tubes

Temperature-Controlled Lens Tube for Temperature-Sensitive Optical Components
Passive-Heat-Sink Lens Tube with 0.25 °C/W Thermal Resistance
Compatible with Our SM1 Lens Tubes

HSLT2

Passive-Heat-Sink
Lens Tube

SM1L10HR

Temperature-Controlled
Lens Tube

Application Idea

HSLT2 Heat-Sink Lens Tube Secured to a QTH10 Tungsten-Halogen Lamp

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Overview
Pin Diagrams
Feedback

Features

Temperature-Controlled Lens Tube for Heating Ø1" Optical Components
Lens Tube with Passive Heat Sink for Cooling Ø1" Optics
Directly Compatible with SM1-Threaded (1.035"-40) Lens Tubes

Thorlabs offers lens tubes featuring controlled heating or passive cooling. The SM1L10HR Temperature-Controlled Lens Tube can heat Ø1" optics up to 85 °C, which is ideal for tuning the performance of temperature-sensitive components and preventing condensation from forming on a lens surface. This lens tube is also equipped with an embedded NTC 10 kΩ thermistor that provides temperature feedback and automatic temperature control with the compatible TC300 Heater Temperature Controller (sold separately).

For cooling Ø1" optical components exposed to large amounts of heat, our HSLT2 Passive-Heat-Sink Lens Tube features a low 0.25 °C/W thermal resistance with an exposed surface area of 79 square inches (510 cm²) and is directly compatible with SM1 or SM2 Lens Tubes.

SM1L10HR Cable Connector

HIROSE HR10A-7P-6PC

Pin Diagram

Pin	Assignment
1	Heater Output
2	Heater Output Return
3	Reserved (Do Not Connect to This Pin)
4	Sensor Input (+)
5	Sensor Input Ground
6	Reserved (Do Not Connect to This Pin)

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Temperature-Controlled Lens Tube

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Specifications
Temperature Range^a	Ambient to 85 °C (Typ.), 90 °C (Max)
External Dimensions	Ø1.95" x 1.42" Long (Ø49.5 mm x 36.1 mm Long)
Clear Aperture^b	Ø0.90" (Ø22.9 mm)
DC Input Voltage	14 V (Max)
DC Input Current	700 mA (Max)
Heater Resistance	19.7 Ω (Typ.)
Temperature Sensor^c	NTC 10 kΩ Thermistor (Beta = 3750)
Long Term Stability^d	0.200 °C (Typ.)
Heating Capacity	30 Watts (Max)
Recommended Controller	TC300

SM1L10HR only operates in heating mode and is protected by an 85 °C thermal switch.
This specification refers to the clear aperture of the retaining ring used to mount the optic.
Thermistor is a Negative Temperature Coefficient Type (NTC)
Conditions: Room ambient using previous-generation TC200 controller. Measured directly on thermistor - internal tube temperatures will differ.

SM1 Lens Tube Featuring Controlled Heating for Ø1" Optics
Embedded NTC 10 kΩ Thermistor Provides Temperature Feedback
Directly Compatible with Our SM1-Threaded (1.035"-40) Lens Tubes

The SM1L10HR Temperature-Controlled Lens Tube is a small heating device that is compatible with our Ø1" Lens Tubes. It is an ideal choice for applying heat to mounted optics in order to control their performance as a function of temperature. It can also be used to prevent condensation from forming on optics.

Optics can be secured inside the heating chamber with the two included SM1RR retaining rings. The SM1L10HR lens tube contains an embedded NTC 10 kΩ thermistor that provides temperature feedback and allows automated control of the internal heating element. It is directly compatible with our TC300 Heater Temperature Controller by connecting the attached cable; see the Pin Diagrams tab above.

The temperature-controlled lens tube can be post mounted by attaching a fixed lens mount to the external SM1 threads, such as in the example below using an SMR1(/M) Fixed Lens Mount.

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SM1L10HR Mounted to a Ø1/2" Post via an SMR1 Fixed Mount

Passive-Heat-Sink Lens Tube

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View Imperial Product List

Item #	Qty	Description
QTH10	1	Quartz Tungsten-Halogen Lamp, 8-32 Tap
HSLT2	1	Passive-Heat-Sink SM1 Lens Tube with External SM2 Threads, Two SM1RR Retaining Rings Included
SM1PL	1	Externally SM1-Threaded Plug
TR3	1	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
PH2	1	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 2"
BA2	1	Mounting Base, 2" x 3" x 3/8"

View Metric Product List

Item #	Qty	Description
QTH10/M	1	Quartz Tungsten-Halogen Lamp, M4 Tap
HSLT2	1	Passive-Heat-Sink SM1 Lens Tube with External SM2 Threads, Two SM1RR Retaining Rings Included
SM1PL	1	Externally SM1-Threaded Plug
TR75/M	1	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
PH50/M	1	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=50 mm
BA2/M	1	Mounting Base, 50 mm x 75 mm x 10 mm

HSLT2 Heat-Sink Lens Tube Secured to a QTH10 Tungsten-Halogen Lamp

Lens Tube Equipped with Heat Sink for Passive Cooling
Offers 0.25 °C/W Thermal Resistance Over 2.10" (53.3 mm) Length
Internal SM1 (1.035"-40) Threading Directly Compatible with Our Ø1" Lens Tubes
External SM2 (2.035"-40) Threading for Compatibility with Our Ø2" Lens Tubes

The HSLT2 Passive-Heat-Sink Lens Tube provides the ability to cool down a lens tube setup that may be subject to an unusual amount of heat. By providing a total surface area of 79 square inches (510 cm²), it provides a thermal resistance of 0.25 °C/W. Ø1" optical components can be mounted into the HSLT2 lens tube using two SM1RR retaining rings (included). This lens tube features internal SM1 threading and external SM2 threading for compatibility with our SM1 and SM2 Lens Tubes, respectively. It can also be mounted to SM05, SM30, or SM3 setups using our Lens Tube Adapters.