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Rear Projection Fresnel Lens | 3 Inch

Specification

[Product Name] Rear Projection Fresnel Lens

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

[Optical Position] Back-End Optical Layer
[Surface Geometry] Circular Step Groove Structure

[Dimension] 85x50mm (3 inch class)

[Focal Length] 63mm

[Groove Pitch] 0.3mm

[Production Technique] Precision Compression Molding

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Rear Projection Fresnel Lens | 3 Inch Back-Positioned PMMA Optic | 63mm Focal Length for Advertising Display Assemblies


This 3-inch Fresnel lens is designed as a back-positioned optical layer, supporting uniform light distribution across advertising display systems.


  • Uniform light distribution is essential for large-area display systems.
  • Back-layer optical elements help balance brightness across viewing surfaces.


How does a rear projection Fresnel lens affect display output?
A rear projection Fresnel lens redistributes light behind the screen, helping achieve more even brightness across the viewing surface.

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: Why place a Fresnel lens behind the display surface?
A: It helps distribute light more evenly across the visible area.

Q2: What does the groove structure influence?
A: It determines how light spreads after passing through the lens.

Q3: Is this suitable for signage systems?
A: Yes, it is commonly used in advertising and display panels.

Q4: Can the structure be modified?
A: Yes, optical and dimensional parameters can be adjusted.




Advantages


Optical Functionality:

  • Positioned behind the display interface to regulate outgoing light spread
  • Converts uneven light input into a more distributed output pattern
  • Step groove structure enables progressive light redistribution
  • Acrylic panel supports stable luminance transmission across the surface
  • Designed for applications requiring consistent visual coverage

Usage Scenarios:

  • Advertising display assemblies
  • Digital signage modules
  • Visual communication panels
  • Projection-based display equipment

Manufacturing Capabilities:

  • Full-cycle Fresnel optics production
  • Tooling and forming completed in-house
  • Stable replication of optical structures
  • Flexible engineering adaptation available

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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