F-Theta Lens

Product Introduction

An F-Theta lens, also known as a flat-field lens, is a specialized optical component designed primarily for laser scanning applications, including engraving, cutting, and marking. Unlike traditional lenses, which can distort the laser beam profile as it moves away from the optical axis, the F-Theta lens maintains a constant spot size across its scan field. This capability stems from its unique design, which consists of multiple optical elements arranged in an air-spaced configuration, optimized for minimal distortion-typically less than 0.1%-and flat imaging. Operating effectively at a design wavelength of 1064 nm, these lenses can cover large scan fields ranging from 70 mm x 70 mm to 156.7 mm x 156.7 mm. Additionally, F-Theta lenses feature high transmittance rates of up to 97%, thanks to their anti-reflective coatings, allowing for efficient laser energy delivery.

Product Features

● Flat Field at the Image Plane: These lenses ensure a flat field across the entire scan area, which is critical for maintaining consistent laser spot sizes. Unlike traditional lenses that create a curved image plane, F-Theta lenses reduce optical errors, resulting in a 30% decrease in manufacturing defects during laser marking processes.

● Large Scan Fields: F-Theta lenses are available in scan field sizes ranging from 70 mm x 70 mm to 156.7 mm x 156.7 mm. The ability to accommodate larger scan areas allows operators to work with diverse materials and complex designs without frequent lens adjustments. In high-volume production settings, this translates to a potential increase in throughput by 25%, enhancing overall operational efficiency.

● Minimized F-Theta Distortion: With distortion levels of less than 0.1% or 1.3%, F-Theta lenses maintain the integrity of the laser beam profile during scanning.Maintaining low distortion can reduce errors in engraving by up to 40%, ensuring precise replication of intricate designs.

● Air-Spaced Multi-Element Design: The air-spaced design of F-Theta lenses consists of multiple optical elements that work together to provide optimal performance. This design minimizes thermal effects and aberrations that can occur with solid lenses, improving the lens's thermal stability under high-power conditions.

● High-Efficiency Anti-Reflective Coating: All optical elements in F-Theta lenses are treated with anti-reflective (AR) coatings, achieving transmittance rates of up to 97%. Improved transmittance can result in a 20% increase in effective laser power, contributing to faster processing times and improved quality of the finished product.

Product Applications

● Laser Marking and Engraving: F-Theta lenses play a pivotal role in laser marking and engraving applications, providing high resolution and uniform beam coverage. With a distortion rate of less than 0.1%, these lenses ensure that the laser spot size remains consistent across scan fields that can range from 70 mm x 70 mm to 156.7 mm x 156.7 mm. Moreover, F-Theta lenses facilitate a resolution of up to 600 DPI (dots per inch), which is crucial for producing detailed and intricate designs.

● Material Processing: In material processing, F-Theta lenses are widely used in laser cutting and drilling applications due to their superior performance and reliability. These lenses are constructed from high-quality optical materials, such as fused silica and ZnSe, which can withstand extremely high temperatures and laser energy while maintaining excellent optical performance. Additionally, F-Theta lenses are equipped with a highly efficient anti-reflective coating that offers a transmittance of up to 97%. This coating not only enhances laser transmission efficiency but also minimizes heat accumulation caused by light reflection, thereby reducing thermal focus shifts.

● LIDAR Systems: In LIDAR technology, the F-Theta lens is a critical component for precise laser beam steering. The multi-element, air-spaced design of the F-Theta lens enables a linear relationship between the output beam displacement and the input laser beam incident angle, allowing for accurate laser beam positioning. Additionally, the flat field produced by these lenses facilitates accurate distance measurements and 3D mapping.

Technical Parameters

product specifications

Details

Factory And Exhibition

Certifications

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Compositions and Package

Main Accessories

FAQ

● About the Laser

What materials can I cut or engrave with a CO2 laser?

CO2 laser machine can cut, engrave, mark a wide range of non-metal and organic materials, such as acrylics, woods, plywood, MDF, paper, cardboard, fabrics, leather, glass, stone, ceramics, and more.

What materials can I cut or engrave with a Fiber laser?

Fiber Laser can cut, engrave, mark on metals, such as steel, stainless steel, aluminum, brass, copper, silver, gold, and on some non-metal polymers, wood, fabric.

● Shipping

How is the machine packaged?

Laser equipment is shipped in a wooden box with Styrofoam to protect fragile parts

How long does it take to ship by air?

After we receive the order, send the machine to one of the main DHL, FEDEX and TNT offices in China. Smaller machines are shipped by courier service. Typically, it takes 10 to 14 days.

How long does it take to ship by sea?

Larger machines are shipped by sea. Usually, it takes 6 to 10 weeks. We can help you arrange delivery directly to your location.

● Customer Support

Is there a warranty?

Manufacturers extend the warranty on their devices to 18 months and replace parts at the factory purchase price.