# Dia 12.5mm Glass IR 808nm 850nm 900nm 905nm 940nm 1200nm Infrared Bandpass Filter

> Dia 12.5mm Glass IR 808nm 850nm 900nm 905nm 940nm 1200nm Infrared Bandpass Filter — a bandpass filter: Glass, 0.5mm-1mm thick, 1200nm. Specs, RFQ…

- Page: https://machiningglass.com/products/dia-12-5mm-glass-ir-808nm-850nm-900nm-905nm-940nm-1200nm-infrared-bandpass-filter/
- SKU: MG-0D1467
- Category: Optical Filters > Bandpass & Interference Filters
- Image: https://machiningglass.com/wp-content/uploads/2026/10/Dia-12-5mm-Glass-IR-808nm-850nm-900nm-905nm-940nm-1200nm-Infrared-Bandpass-Filter.webp
- Updated: 2026-10-24

Product type: Thin Film Filter. Application: Lighting, Medical, Optical, Photography. Model: BP.

## Overview

Dia 12.5mm Glass IR 808nm 850nm 900nm 905nm 940nm 1200nm Infrared Bandpass Filter is a bandpass filter made from Glass. Listed geometry: size 5~80mm, thickness 0.5mm-1mm. Optical / electrical data: wavelength 1200nm, bandwidth 17nm or Custom. It is used in Lighting, Medical, Optical and Photography. 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 | 5~80mm |
| Cwl | 1200nm |
| Fwhm | 17nm or Custom |
| Usage | Lighting, Medical, Optical, Photography |
| Thickness Range | 0.5mm-1mm |
| Model NO. | BP |
| Color | Transparent |
| Principle | Cut-off Filter |
| Angle of incidence | 0° |
| Applications | Bio-Analyzer |
| Supplier | Nano Macro Optics Co.,Ltd. |

## Technical data

| Parameter | Value |
| --- | --- |
| Wavelength | 1200nm |
| FWHM | 17nm or custom |
| Substrate Material | K9,BK7,B270 etc |
| Dimensions | custom |
| Thickness | 1.1 ±0.1mm or custom |
| AOI | 0° |
| Transmittance | T>90% |
| Surface Quality (SQ) | 60-40 Scratch & Dig |
| Clear Aperture (CA) | 90% |
| Blocking | 350-1500nm except for transmission band |

## What to specify when you request a quote

- **Spectral target** — listed as “1200nm”; 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 “5~80mm”; 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** — 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/). How parts like this are machined and finished is covered in [Chalcogenide Glass Coating for IR Optical Components](https://machiningglass.com/capabilities/chalcogenide-glass-coating-for-ir-optical-components/). 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 Dia 12.5mm Glass IR 808nm 850nm 900nm 905nm 940nm 1200nm Infrared Bandpass Filter 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 5~80mm, 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 1200nm, bandwidth 17nm or Custom. Confirm the values at your operating wavelength, angle and temperature when you request a quote.

### Where is this bandpass filter used?

Listed applications: Lighting, Medical, Optical and Photography.

### 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=10051#mg-rfq

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