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Anti-Ghosting Fresnel Lens | 3.5 Inch

Specification

[Product Name] Anti-Ghosting Fresnel Lens

[Manufacturer] Shandong Yuying Optical Instrument Co., Ltd
[Available Sizes] Optical-grade PMMA (Acrylic)

[Optical Position] Front-Side Projection Layer
[Surface Design] Anti-Reflection Coated Micro-Structure

[Dimension] 97.2x58mm (3.5 inch class)

[Focal Length] 120mm

[Groove Pitch] 0.3mm

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Anti-Ghosting Fresnel Lens | 3.5 Inch Front Optical Panel | 120mm Focal Length with Coated Surface for Home Cinema Projection


This 3.5-inch coated Fresnel lens is designed for front optical placement in home cinema systems, reducing ghosting effects while supporting long-distance projection clarity.


  • Ghosting occurs when reflected light interferes with primary projection images.
  • Optical coatings can significantly reduce stray reflection paths.


What does an anti-ghosting Fresnel lens do in projection systems?
It reduces unwanted duplicate images caused by internal reflections, improving visual clarity in projection outputs.

Customization Services

Yuying provides customized Fresnel lenses for projectors, tailored in terms of focal length, dimensions, and groove design.


  • Custom Fresnel lenses available in varied sizes, shapes and focal lengths
  • Optimized thread pitch/tooth profile: Enhances resolution, clarity and brightness
  • Eccentric condenser lens technology: Expands keystone correction range for optimal viewing in both desktop/ceiling installations
  • Front-rear lens configuration improves light utilization efficiency


Q1: What causes ghosting in projection systems?
A: It is usually caused by unwanted internal light reflections.

Q2: How does coating help reduce ghosting?
A: It minimizes reflected light that creates duplicate images.

Q3: Why is long focal length important in home cinema?
A: It supports better alignment over longer projection distances.

Q4: Can this lens be customized?
A: Yes, coating type and optical parameters can be adjusted.




Advantages


Optical Behavior:

  • Front-layer placement helps manage incoming light before projection
  • Anti-ghosting coating reduces stray reflections and secondary imaging artifacts
  • Extended focal length supports long-distance optical alignment
  • Micro-groove geometry enables controlled light direction stability
  • PMMA base maintains consistent transmission across viewing conditions

Application Scope:

  • Home cinema projection systems
  • High-quality visual entertainment devices
  • Long-distance projection setups
  • Optical imaging correction modules

Manufacturing Capability:

  • Integrated Fresnel molding + coating process
  • Stable optical consistency across batches
  • Custom focal length and coating options available
  • Industrial-scale production support

Functions

Fresnel lenses perform beam collimation and focusing:

1. Convert point sources into parallel light, significantly enhancing edge brightness of display panels while eliminating sunspot effects and improving overall brightness uniformity
2. Typically used with other optical components (e.g. cylindrical lenses)
3. Removing collimation lenses causes substantial light loss through panels, resulting in noticeable hotspots and reduced edge brightness
4. On the reverse side of LCD screens, light must be converged from panels to projection lenses



Application Examples

  • Portable Projectors: Ultra-thin Fresnel lenses enable compact optical engines as small as the palm of your hand.
  • Rear-Projection TVs: Large-format Fresnel screens are used for light diffusion and viewing angle control.
  • 3LCD/DLP Projection Technology: Both rely on Fresnel lenses as key optical components for light collimation and concentration.

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