What is BK7 Lenses?
BK7 lens is a lens made of BK7 optical glass, which is a common borosilicate crown glass.

What is the application of BK7 Lenses?
The main applications of BK7 lenses include:
1. Optical imaging systems: used in cameras, microscopes, telescopes and other equipment to provide high quality imaging.
2. Laser systems: for focusing, collimating and beam shaping of lasers for medical, industrial and scientific applications.
3. Spectrometers: as lenses or window materials for spectroscopy and detection.
4. Projection system: for projectors and magnifiers to provide clear images.
5. Optical measuring instruments: for interferometers, rangefinders and other precision measuring equipment.
6. Medical equipment: for endoscopes, microscopes and other medical imaging equipment.
7. Scientific experiments: for beam control and imaging in optical experiments.
8. Photographic lenses: for high quality photographic lenses, providing excellent optical performance.
9. Optical fiber communications: for optical fiber coupling and signal processing.
10. Lighting system: for spotlighting and uniform illumination.

What’s the difference from Fused Silica Lenses and BK7 Lenses?
Fused Silica Lenses: Suitable for UV wavelength , high temperature, high precision applications, but it has higher cost.
BK7 Lenses: Suitable for visible light, general optical applications,while its price is much lower than fused silica.

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