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CLDM
Optics Size
Thickness t
Transmittance
(45 degree incident)
Transmittance of cutoff range
(45 degree incident)
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The principle of the cold mirror is reflecting the visible range light and leave the UV range light to transmit. It can separate the visible and the UV (heat) of the sunlight.

◦Low absorption with a dielectric multi-layer coating using high transmittance glass material and it can be resistant to rapid change in high temperature.
◦Using this product it is possible to select IR light only.
◦Can be used as a NIR filter by changing the angle of Incident.

Related product
Products
Technical Data
Documents/Downloads
Guide

▶B270® is a registered trademark of SCHOTT AG Inc.
▶Different size, wavelength and deviation ratio not mentioned on-line or in our catalog are available as custom products upon on request.
▶For a suitable filter holder, please contact our Sales Division.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶Do not use cold mirror with high power laser and high energy pulsed laser. We can provide dichroic filters (TFMHP) suitable for use with pulse lasers, please contact our Sales Division.
W3006
▶The backside of the cold mirror is not coated with AR, please use the dielectric coating side for visible light incident. The backside may have 10% of loss of energy and the ghost image may occur.
▶The visible light is reflected, the UV (heat) is transmitted, avoid blocking the transmitted light by a reflective element which may hold the heat.
▶The reflecting light may be mixed with infrared if the incident angle is other than 45 degrees.

Common Specifications
MaterialB270® (White Glass : CLDM-50S) or BK7
Incident angle45°
Wavelength Range400 - 2000nm
Surface Quality (Scratch-Dig)80-50, (60−40 : CLDM-50S)
Clear apertureCircle of 90% of the diameter or Circle inscribed in a square of 90% of the dimensions
Outline Drawing
■Square

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■Circle

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Schematic

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Typical Transmittance Data

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T: Transmission

Part Number

Catalog PDF

dxf

STP

IGS

SAT

Zemax

CLDM-25.4S3.3

CLDM-50.8S3.3

CLDM-50S

CLDM-25.4C3.3

CLDM-50.8C3.3

Spec
Compare
Part Number
Add to cart Cart
    JP Yen Stock Qty
CLDM-25.4S3.3
CLDM-50.8S3.3
CLDM-50S
CLDM-25.4C3.3
CLDM-50.8C3.3

□25.4±0.5mm

3.3±0.3mm

800 - 2000nm

>75%

400 - 700nm

>95%

760±10nm

□50.8±0.5mm

3.3±0.3mm

800 - 2000nm

>75%

400 - 700nm

>95%

760±10nm

□50±0.3mm

1±0.1mm

800 - 2000nm

>80%

400 - 700nm

>90%

760±10nm

φ25.4±0.5mm

3.3±0.3mm

800 - 2000nm

>75%

400 - 700nm

>95%

760±10nm

φ50.8±0.5mm

3.3±0.3mm

800 - 2000nm

>75%

400 - 700nm

>95%

760±10nm

RoHS  

¥4,200

CONTACT
US
RoHS  

¥9,100

CONTACT
US
RoHS  

¥10,000

IN STOCK
RoHS  

¥4,200

LOW
RoHS  

¥9,100

CONTACT
US