Optical Filter

We are developing an NIR spectroscopy device and require visible bandpass filters to monitor the health of halogen lamp light sources. The filters must block all wavelengths outside the visible spectrum (400-3000 nm) to prevent optical errors at the detector.

Required specifications:
• Dimensions: 17.5±0.1 mm × 9.5±0.1 mm
• Thickness: 1 mm
• FWHM: 50±5 nm
• Center wavelength: ~550±10 nm
• Optical density: >3 across 400-3000 nm range

Order quantity: 20 pieces.
Please provide detailed specifications and pricing.

I need ZnSe half ball lenses with 10mm diameter (slight variations acceptable) and MgF2 AR coating. Initial quantity requirement ranges between 5-10 units depending on pricing. Please provide product specifications and tiered pricing options.

Looking for circular polarizing filters with specified polarization handedness (RHCP and LHCP).  
Requirements:  
- Material: Optical glass (B270, AGC or equivalent)  
- Size: 100x100 mm  
- Coating: Anti-reflective and anti-scratch treatment  
- Quantity: 1 unit per type (RHCP & LHCP) for initial sample testing  
- Priority given to suppliers capable of fast shipping to Spain (EU)  
Please confirm manufacturing capability for defined circular polarization handedness.

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