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High Gain Projector Fresnel Lens | 4.45 Inch

Specification

[Product Name] High Gain Projector Fresnel Lens

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

[Optical Placement] Front-Side Gain Control Layer
[Surface Architecture] Precision Concentric Groove Array

[Dimension] 108.9 × 65.1 mm (4.45 inch class)

[Focal Length] 148mm

[Groove Pitch] 0.3mm

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High Gain Projector Fresnel Lens | 4.45 Inch Front Optical Gain Panel | 148mm Focal Length for Brightness & Field Uniformity


This 4.45-inch high gain Fresnel lens is designed for front optical placement, supporting brightness enhancement and field uniformity in long focal projection systems.


  • Optical gain systems improve perceived brightness without increasing energy input.
  • Field uniformity is essential for large-scale projection display quality.


What does a high gain Fresnel lens do in projection systems?
It enhances perceived brightness by controlling light spread and improving directional distribution across the projection surface.

Customization Services

Yuying is 30+ years in Fresnel optical manufacturing, 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 is optical gain in projection lenses?
A: It refers to the enhancement of perceived brightness through controlled light distribution.

Q2: Why is uniformity important in large displays?
A: It ensures consistent visual brightness across the entire viewing area.

Q3: Where is a front gain Fresnel lens used?
A: It is typically placed before the projection output stage.

Q4: Can focal length be customized?
A: Yes, different optical designs can be adjusted based on system needs.




Advantages

Optical Characteristics:

  • Front-layer configuration enhances incoming light distribution before projection
  • Extended focal distance supports long-range optical alignment systems
  • Groove structure regulates angular light spread for controlled output shaping
  • Optical gain behavior improves perceived brightness consistency across surface area
  • PMMA substrate ensures stable transmission under continuous illumination

Application Fields:

  • High-brightness projection systems
  • Large-area display modules
  • Optical imaging enhancement units
  • Visual presentation equipment

Manufacturing Strength:

  • Dedicated Fresnel lens production line
  • Precision mold development capability
  • Stable optical replication across batches
  • Custom gain and focal design 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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