# Optical Instruments Fwhm 10-50nm Band Pass 520nm Filters with High Quality

> Optical Instruments Fwhm 10-50nm Band Pass 520nm Filters with High Quality — a bandpass filter: Glass, 0.5mm-1mm thick, 650+/-2nm. Specs, RFQ checklist…

- Page: https://machiningglass.com/products/optical-instruments-fwhm-10-50nm-band-pass-520nm-filters-with-high-quality/
- SKU: MG-7D5214
- Category: Optical Filters > Bandpass & Interference Filters
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Optical-Instruments-Fwhm-10-50nm-Band-Pass-520nm-Filters-with-High-Quality.webp
- Updated: 2026-10-24

Product type: Thin Film Filter. Application: Medical.

## Overview

Optical Instruments Fwhm 10-50nm Band Pass 520nm Filters with High Quality: a bandpass filter made from Glass. Listed geometry: size 80*80mm or Customized, thickness 0.5mm-1mm. Optical / electrical data: wavelength 650+/-2nm, bandwidth 10-50nm. Surface quality 60/40. It is used in Medical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

## Specifications

| Parameter | Value |
| --- | --- |
| Material | Glass |
| Type | Thin Film Filter |
| Shape | Customized |
| Size | 80*80mm or Customized |
| Cwl | 650+/-2nm |
| Fwhm | 10-50nm |
| Surface Quality | 60/40 |
| Usage | Medical |
| Thickness Range | 0.5mm-1mm |
| Color | Transparent |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Supplier | Nano Macro Optics Co.,Ltd. |

## Technical data

| Parameter | Value |
| --- | --- |
| Product name | BP650nm filter |
| CWL | 650+/-2nm |
| Surface quality | 60/40 |
| Size | 80*80*1.1mm or customized |

## What to specify when you request a quote

- **Spectral target** — listed as “650+/-2nm”; state the centre or edge wavelength, the bandwidth and the minimum transmission in the passband.
- **Blocking** — give the blocking range and optical density (OD) the system needs.
- **Angle of incidence** — listed as “0°”; interference filters shift with angle, so specify the operating angle and cone.
- **Size and thickness** — listed as “80*80mm or Customized”; give outline, thickness and tolerance, and whether the filter is mounted.
- **Substrate** — listed as “Glass”; name the substrate glass if thermal or UV behaviour matters.
- **Surface quality** — listed as “60/40”; quote scratch-dig for imaging paths.

## Engineering guides for this part

For material grades and coating options, see [Selecting Bandpass Filter Glass for Reliable Optical Performance](https://machiningglass.com/materials/selecting-bandpass-filter-glass-for-reliable-optical-performance/). For an application example, read [Bandpass Filter Glass for Appliance Light Detection Modules](https://machiningglass.com/applications/bandpass-filter-glass-for-appliance-light-detection-modules/). A related standard product is [Bandpass Filter](https://machiningglass.com/products/bandpass-filter/).

## FAQ

### What is the Optical Instruments Fwhm 10-50nm Band Pass 520nm Filters with High Quality made of?

It is listed as Glass. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.

### What sizes and thicknesses are available?

The listing gives size 80*80mm or Customized, thickness 0.5mm-1mm. Custom outlines and thicknesses are made to drawing; state the tolerance you need.

### What optical or electrical performance does it have?

Listed values: wavelength 650+/-2nm, bandwidth 10-50nm. Confirm the values at your operating wavelength, angle and temperature when you request a quote.

### Where is this bandpass filter used?

Listed applications: Medical.

### What should I include in a quote request?

Include spectral target, blocking, angle of incidence, size and thickness and substrate, plus quantity and a drawing if the part is custom.

## Request a quote

Send drawings, tolerances and quantity: https://machiningglass.com/contact/?rfq_product_id=10311#mg-rfq

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Source: Custom Precision Glass Machining — https://machiningglass.com/