Lens heater / anti-fog strip for astrophotography (with controller)

USB anti-fog lens heater (5V) for photo lenses

This lens warmer is designed to prevent your camera lens from fogging up and keep it dry during photo sessions, especially astrophotography. It attaches around the lens and delivers even heat to limit condensation.

Origin story

Born from your astro heating needs. We've heard that many of you are looking for heating solutions (e.g. heating pads for seating, or other heating systems dedicated to astronomy). Just tell us what you need, and we'll design a solution to suit.

Specifications

• Power supply : 5V
• Login : USB-A
• How it works : requires continuous connection to an external battery (power bank) for operation
• Material : neoprene (wetsuit material)
• Length : 42.5 cm (16.73″)
• Width : 3.4 cm (1.33″)
• Heating diameter : 9 cm (3.54″)
• Maximum diameter : 13.5 cm (5.31″)
• USB power cable length : 153 cm (60.23″)
• Temperature controller cable length : 166 cm (60.35″)
• Heating range : 40°C to 75°C (104°F to 167°F)

Highlights

• Compatible with most lenses on the market
• USB cable for simple connection to a power source (power bank, etc.)
• Adhesive strap for easy attachment and removal
• Neoprene wetsuit : helps retain heat longer

Presentation in 3 aspects

1) The material: neoprene

The main fabric of this anti-fog strip is made of neoprene, different from ordinary fabrics. Neoprene is water-resistant, chemically stable and retains its flexibility over a wide temperature range. Thanks to its excellent durability, it is used for laptop covers, orthopedic splints, swimsuits, wetsuits, camera bags and much more.

After comparison with other anti-fog strips, we found that this material retains heat well, which can contribute to more energy-efficient use.

2) Power

• High : 7,5 W
• Average : 3,75 W
• Low : 1,85 W

Compatible with most external batteries in 5V. You can power it with a standard power bank featuring a 5V via a connector USB-A.

3) Temperature control (3 levels)

The lens warmer features 3 power levels, corresponding to temperature ranges :

• High temperature : 61°C to 75°C (141.8°F to 167°F)
• Average temperature : 50°C to 60°C (122°F to 140°F)
• Low-temperature : 40°C to 49°C (104°F to 120°F)

Test performed with an external battery (output: 5V, 2A) at an ambient temperature of 24°C to 25°C (75.2°F to 77°F).

Package contents

• Anti-fog heating strip
• Control cable

How do I use it?

This lens warmer can be operated directly via the main cable. If you don't connect the control cable to the main cable, you can use the lens warmer as is.

1. Wrap the lens warmer around the lens.
2. Connect the USB cable to a external battery (continuous connection required).
3. Without a control cable, the lens warmer operates in the high beach (61°C to 75°C).

You can also connect control cable to the main cable to select the desired temperature range (low / medium / high).