F-Theta Scanning Lens

F-Theta laser scanning lens: 

For scanning galvanometer: a parallel collimated laser beam is focused on the focal plane. When the galvanometer system is deflected dynamically according to the established optical scanning angle, it can maintain a good linear focusing pattern, so that the laser beam can focus on the focal plane into an ideal focusing spot.

For CO₂ laser system, because the crystal material is relatively expensive, single or double-chip designs are generally used. At the same time, it is limited to a longer wavelength. In the diffraction limit state, its focus spot is larger than that of solid lasers. Solid lasers have shorter wavelengths and fluctuate from near infrared spectrum to 300 nm, allowing a wider freedom of choice material base options. The design can use more chips to calibrate the distortion and can get a finer and better focusing spot.

Laser scanning lens designed and manufactured by SPT’s engineers and technicians use 9 spot and energy measurement methods to effectively control the difference between central spot and edge spot within 5%. Our excellent optical design and experienced testing methods ensure accuracy of the core parameters of the laser scanning lens, and finer and more energetic light spots.

Laser heating can absorb dirt and contaminate the surface of laser optical lens. Dust, oil vapour, water vapour, splashing of materials during cutting or marking, fingerprints and so on can contaminate the laser optical lens. Keep away from potential sources of contamination and maintain regular cleaning processes of laser lens. Under normal conditions, every worker should check the optical system before changing shifts to predict possible contamination or damage.

Laser lenses cleaning precautions:

1. Always wear rubber/latex finger cots or gloves when operating laser lenses. Dirt and oil stains on the skin can seriously contaminate the laser lens and greatly degrade its performance.

2. Do not use any tools to operate optical lenses, including tweezers

3. For protection purposes, optical lenses should always be placed on the provided wipe paper or cotton cloth.

4. Do not place laser optical lenses on hard or rough surfaces. The surface of laser optical lens can easily be scratched.

5. Do not clean or touch the exposed surface of gold or copper.

6. Keep in mind that all the laser lenses components are fragile.

Laser lenses cleaning steps:

1. Take off the laser lens with a finger cot

2. Blow the debris scattered on the surface of the laser lens with an air bag and place it on a clean and soft cotton cloth.

3. Use clean degreased cotton balls and soak them in acetone before wiping the lens surface.

4. Wash the lens with acetone, then hold the corner of the wiping paper and place the paper on the lens. Drag the paper slowly to remove the residual acetone, then dry the surface of the lens.

5. Heavily polluted metal based mirrors can be first cleaned with polishing agent. The polishing agent should be at a minimum to ensure the removal of necessary dirt. Then use the aforementioned methods to clean.

6. Finally, carefully inspect the surface of the laser optical lens under intense light. Repeat the steps if there are residual contaminants.

Despite choosing the best optical materials and technology, we can not completely guarantee that all optical lens products will not appear any defects. We provide a 30-day quality litigation period for quality problems caused by defects in optical materials and manufacturing.

Service method:

Void warranty when: