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Overhead Projector Fresnel Lens

Specification

[Product Name] Projector Fresnel Lens

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

[Dimension] 50×32mm (Customizable upon request)
[Focal Length] 50mm

[Groove Pitch] 0.3mm

[Customized] Dimension, Shape, Focal Length, Groove Pitch, Thickness and more


What is a 50mm Fresnel Lens used for?

A 40mm focal length Fresnel lens is commonly used in compact projection systems and optical devices where precise light focusing and space-saving design are required.

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High Quality Overhead Projector Fresnel Lens | 2 inch | Optical PMMA | Focal 50mm | Factory Directly


This Fresnel lens is a compact, high-precision optical component designed for projection systems requiring efficient light focusing and minimal space.


Yuying Optical designs and manufactures Fresnel lenses specifically for projection systems, offering excellent collimation and focusing capabilities. By converting a point light source into a uniform parallel beam, these lenses enhance image brightness and uniformity while minimizing hotspot effects. They are commonly used in combination with cylindrical lenses and other optical components.


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 material is used in this Fresnel lens?
A: Optical-grade PMMA (acrylic), ensuring high transparency and durability.

Q2: Can the focal length be customized?
A: Yes, focal length, size, and groove pitch can be customized.

Q3: Is this lens suitable for mini projectors?
A: Yes, it is ideal for compact and DIY projection systems.

Q4: What is groove pitch in Fresnel lenses?
A: Groove pitch refers to the distance between grooves, affecting light precision and clarity.






Advantages

Improved Brightness Uniformity: Eliminates center-brightness and edge-dimming issues
Enhanced Light Efficiency: Reduces light loss during transmission through the panel
Hotspot Suppression: Effectively minimizes hotspot effects, protecting display components
Front & Rear Fresnel Configuration: Front lens collimates light; rear lens focuses it for optimal output
Flexible Installation: Suitable for both ceiling-mounted and desktop projectors with keystone correction 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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