Optical Filter/Lens: Wavelength Range 400-1700 nm

Component Specifications

Definition

An optical filter/lens is a critical component in optical receivers that selectively transmits specific wavelengths while blocking others, and focuses incoming light onto photodetectors. It ensures signal integrity by filtering out noise and ambient light interference while maximizing signal strength through precise optical focusing.

Working Principle

Operates on principles of interference filtering (for filters) and refraction (for lenses). Filters use thin-film coatings to reflect unwanted wavelengths while transmitting target bands. Lenses use curved surfaces to converge or diverge light rays, focusing them onto detection surfaces with minimal aberration.

Materials

Optical glass (BK7, fused silica), crystalline materials (CaF2, ZnSe), polymer optics (PMMA, polycarbonate), with anti-reflective coatings (MgF2, SiO2)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bandwidth	10-100 nm
Focal Length	5-100 mm
Surface Quality	40-20 scratch-dig
Wavelength Range	400-1700 nm
Diameter Tolerance	±0.1 mm
Transmission Efficiency	>90%
Center Thickness Tolerance	±0.05 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 10110, ISO 14997, DIN 3140, DIN 58196

Parent Products

This component is used in the following industrial products

Optical Receiver

A component within a LiDAR sensor that detects and converts incoming optical signals (laser light reflections) into electrical signals for processing.

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Engineering Analysis

Risks & Mitigation

Contamination reducing transmission
Mechanical damage to coatings
Thermal expansion affecting alignment
Moisture absorption in polymer optics

FMEA Triads

Trigger: Improper cleaning procedures
Failure: Surface contamination reducing light transmission
Mitigation: Implement cleanroom handling protocols and use approved optical cleaning solutions

Trigger: Thermal cycling
Failure: Coating delamination or lens cracking
Mitigation: Select materials with matched thermal expansion coefficients and implement gradual temperature transitions

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm dimensional, ±0.5° angular, >90% transmission at specified wavelengths

Test Method

Spectrophotometry for transmission/reflection, interferometry for surface quality, environmental testing per MIL-STD-810

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Optical Filter/Lens

Manufacturer profiles associated with Optical Filter/Lens.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between bandpass and longpass optical filters?

Bandpass filters transmit a specific wavelength range while blocking others on both sides, ideal for isolating narrow spectral bands. Longpass filters transmit wavelengths longer than a cutoff point while blocking shorter wavelengths, used for separating signal from background noise.

How does lens focal length affect optical receiver performance?

Focal length determines the convergence point of incoming light. Shorter focal lengths provide higher light concentration but narrower field of view, while longer focal lengths offer wider coverage with lower intensity. Proper selection balances signal strength and detection area.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Optical Filter/Lens