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Fresnel Optical Lens | 2.69 Inch

Specification

[Product Name] Fresnel Lens for DIY Projector

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

[Lens Type] Flat Structured Fresnel Surface

[Optical Orientation] Front Projection Configuration

[Dimension] 70.9x37mm (2.69 inch class)
[Focal Length] 70mm

[Groove Pitch] 0.3mm

[Optical Design] Precision Compression Molding

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Fresnel Optical Lens | 2.69 Inch Front Projection PMMA Lens | 70mm Focal Distance for Display Imaging Systems


This 2.69-inch Fresnel optical lens is designed for front-position integration, enabling controlled light guidance and stable imaging performance in projection-based systems.


Light direction control is a key factor in projection system performance.
Fresnel structures allow thin optical elements to manage beam paths effectively.


What does a front projection Fresnel optical lens do?
A front projection Fresnel optical lens redirects incoming light before it reaches the display surface, helping define beam direction and improve visual consistency.

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 use a front-position Fresnel lens in projection systems?
A: It helps guide light paths before projection, improving directional control.

Q2: What determines the focal distance of a Fresnel lens?
A: The surface structure and groove arrangement define how light converges.

Q3: Can this lens be used in embedded systems?
A: Yes, it is suitable for integration into compact optical assemblies.

Q4: Are custom dimensions available?
A: Yes, parameters can be adjusted based on project requirements.




Advantages


Technical Characteristics:

  • Surface microstructure directs incident light toward a defined focal region
  • Front-position configuration supports pre-screen light shaping
  • Consistent groove spacing contributes to stable optical behavior
  • Acrylic substrate enables efficient light passage across the surface
  • Suitable for projection assemblies requiring controlled beam direction

Application Fields:

  • Projection display modules
  • Embedded optical systems
  • Visual demonstration equipment
  • Experimental imaging setups

Manufacturing Profile:

  • Dedicated Fresnel optics production line
  • Internal mold fabrication capability
  • Batch-to-batch consistency control
  • Custom parameter adjustment 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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