Bi-concave Lenses
Overview
- Double concave surfaces designed to diverge light rays
- Produces a virtual image
- Commonly used for beam expansion and divergence control
Key Features
Light Divergence
- Expands collimated beams
Negative Focal Length
- Creates virtual images
Compact Optical Control
- Useful in beam shaping systems
Design & Construction
- Two inward-curved surfaces
- Symmetrical design for balanced performance
Wavelength Options
- UV, Visible, NIR
- AR coatings available
Applications
- Beam expansion
- Laser systems
- Optical correction systems
Why Choose Bi-Concave Lenses
- Efficient beam divergence
- Compact and simple design
- Reliable for optical control systems
Frequently asked questions
Here are some common questions about achromatic lens.
- Expanding beams or diverging light in optical systems
BK7, Fused Silica, IR materials depending on application
Cemented Doublet:
- Compact design
- Lower reflection loss
- More cost-effective
Air-Spaced Doublet:
- Better thermal stability
- More design flexibility
Consider:
- Required wavelength range (UV, VIS, NIR)
- Focal length and working distance
- Application type (imaging, laser, measurement)
- Yes
- Lenses can be customized based on:
- Material selection
- Coating type
- Diameter and focal length
- Specific system requirements
