These 45mm biconvex lenses are commonly used in DIY virtual reality viewers, educational optics projects, and precision magnification tasks. This guide highlights five accessible options, detailing why each lens is suitable for 3D visuals, classroom experiments, or hobby projects. Explore specifications, alignments, and practical usage to help you choose the right focal length and diameter for your build.
| Product | Diameter | Focal Length | Material | Use Case |
|---|---|---|---|---|
| Pop-Tech Biconvex Lens Set (34mm Dia, 45mm F) | 34 mm | 45 mm | Plastic | DIY Google Cardboard VR |
| JECOMPRIS Biconvex VR Lenses (20 Pack, 25mm x 45mm) | 25 mm | 45 mm | Acrylic | DIY VR Viewers, STEM Projects |
| Pop-Tech Biconvex Lens Set (34mm Dia, 45mm F) | 34 mm | 45 mm | Glass/Plastic mix | VR Goggle Projects |
Note: All selections revolve around a 45mm focal length to align with common DIY VR and optical learning kits while offering variations in diameter and mount design to fit different builds and classrooms.
Pop-Tech Bi-Convex Lenses For DIY Cardboard VR
These high-definition biconvex lenses feature a 45mm focal length with a 34mm diameter, designed to enhance 3D depth in DIY Google Cardboard projects. The lenses are described as optically clear with strong magnification and are suitable for stacking between cardboard layers in headset assemblies. They are noted for providing a crisp, immersive image with a simple sandwich assembly rather than specialized mounting tabs. The focal length around 45mm makes them a practical choice for beginner VR builds and basic optical demonstrations.
Pop-Tech 34mm Bi-Convex Lenses For Cardboard VR
This second Pop-Tech lens option maintains a 34mm diameter with a 45mm focal length, crafted for DIY Google Cardboard VR projects. The description emphasizes high-quality plastic biconvex lenses designed to deliver a better 3D experience when used in headset assemblies. It’s positioned as a straightforward drop-in component for makers building or prototyping VR viewers, emphasizing compatibility with standard cardboard-style constructions.
JECOMPRIS Biconvex VR Lenses (25mm x 45mm)
JECOMPRIS offers a bulk pack of 20 biconvex lenses with a 45mm focal length and a 25mm diameter, designed for stable mounting in DIY VR viewers. The product highlights include a secure flanged winged design that locks into slots, helping prevent wobble and detachment during use. This makes the lenses particularly well-suited for classroom experiments, maker spaces, and projects where multiple viewers or iterations are built and tested in sequence. They are described as providing vivid 3D immersion through precise magnification.
JIATONG Double Convex Lenses (29mm, 45mm F)
JIATONG’s set includes PMMA (acrylic) double-convex lenses with a 29mm outer diameter and a 45mm focal length. The materials offer high transparency and low dispersion for sharp image projection, making them suitable for physics demonstrations, optics experiments, and DIY projects where modest lens size is required. The product emphasizes durability, scratch-resistant edges, and uniform beam spacing to minimize artifacts during classroom use, experiments, or maker projects requiring repeated handling.
Kopinma 2X For Cardboard VR BiConvex Lenses, 37mm x 45mm
The Kopinma lenses are designed specifically for Cardboard VR setups and list a 37mm diameter with a 45mm focal length. The product packaging focuses on replacement lenses rather than a full kit, signaling convenience for upgrading a headset. Suitable for hobbyists replacing worn elements or constructing a simple DIY viewer with reliable magnification and straightforward mounting considerations in typical Cardboard-style frames.
K9 Optical Glass Double Convex Biconvex Lens (Multiple Sizes)
K9 optical glass lenses are offered in a range of diameters and focal lengths, including a 45mm focal option. The lenses are marketed for high light transmission and clarity, suitable for precise magnification tasks, optics demonstrations, and education-focused projects. The flexible diameter options support a variety of DIY builds, from compact readers to larger headset replacements, with emphasis on distortion-free performance.
Buying Guide: Key Purchase Considerations
- Focal length alignment: For DIY VR and headset projects, a 45mm focal length is common, but verify compatibility with your display distance and lens housing to avoid distortion or eye strain.
- Diameter and mounting: Lenses come with varying diameters (e.g., 25mm, 29mm, 34mm, 37mm). Check your frame’s slot size, thickness, and mounting method (tabs, flanged edges, or sandwiched builds) to ensure secure fit.
- Material and optics: Acrylic PMMA lenses are cost-effective and easy to work with, while glass options offer higher clarity and durability. Consider wear resistance for classroom use or repeated assembly.
- Bulk vs. single-unit: Educational kits and classroom use benefit from bulk sets (like 20 lenses) for multiple experiments, enabling side-by-side comparisons and standardized learning.
- Durability and handling: Look for designs with secure mounting to prevent wobble in dynamic uses, especially for handheld devices and moving viewer experiments.
- Intended application: For VR, ensure the lens diameter and focal length pair with your display and enclosure dimensions. For optics demonstrations, prioritize high transparency and minimal distortion.
- Replacement parts: If upgrading an existing headset, verify compatibility with your current housings and any frame adapters or mounting clips.
- Safety and handling: Lenses can have sharp edges on some models; handle with care and store in protective cases to prevent chipping or scratches.
Comparison At A Glance
- Best for beginner VR builds: Cards and kits in the 34mm diameter range with 45mm focal length
- Best for classroom labs: 20-piece JECOMPRIS sets provide scalable coverage for multiple devices
- Best for lens upgrades: K9 Optical Glass options offer multiple diameters and clear optics
- Best for replacement parts: Kopinma and Beuiouer options focus on easy replacement in Cardboard setups