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DFB1/DFSQ1
Material
Diameter φD
Sand blasted surface (sand number range)
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Ground glass diffuser has a large area diffusion of an incident light. It is widely used in prevention of imaging of lamp filament, to diffuse a large area of projected light or used as a screen.

◦The ground glass diffuser with sandblasted surface at a grit range from #240 to #1500. The higher the grit number the finer the sandblast size.
◦BK7 for visible and NIR and for Ultraviolet we recommend Synthetic fused silica substrates.

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Technical Data
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Guide

▶Ground glass on both surfaces or specific custom size substrates are available, please contact our Sales Division with your request.

Attention

▶The characteristic graph shown below is just a reference measurement and is not a measured result of our products.
▶Use the sandblast surface for screen application. The backside may have 4% reflectivity and it may cause a ghost imaging phenomena.

Common Specifications
MaterialDFB1: BK7 DFSQ1: Synthetic fused silica
Surface condition (Front surface)Sand blasted surface at various sand number range
Surface condition (Rear surface)Polished (Surface flatness: about 4λ)
Wavelength RangeDFB1: 400 − 2000nm
DFSQ1: 200 − 2000nm
Clear aperture90% of the diameter
Outline Drawing

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Schematic

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Reference

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■Diffuser characteristics

The characteristic of the diffuser depends on the sandblast grit range.
The sand number range at #240 & #400 with large surface roughness the light incident is strongly diffused and the transmitted light is projected onto larger area.
The sand number range at #1000 & #1500 with small surface roughness the diffused light is weak and the transmitted beam diffuse gradually the surrounding of the beam.
The diffusion of the light is different in accordance with the wavelength, the long wavelength light has lower diffusion capability.
Please see the graph above for your reference:
Spec
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Part Number
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    JP Yen Stock Qty
DFB1-30C02-240
DFB1-30C02-400
DFB1-30C02-600
DFB1-30C02-800
DFB1-30C02-1000
DFB1-30C02-1500
DFB1-50C02-240
DFB1-50C02-400
DFB1-50C02-600
DFB1-50C02-800
DFB1-50C02-1000
DFB1-50C02-1500
DFSQ1-30C02-240
DFSQ1-30C02-400
DFSQ1-30C02-600
DFSQ1-30C02-800
DFSQ1-30C02-1000
DFSQ1-30C02-1500
DFSQ1-50C02-240
DFSQ1-50C02-400
DFSQ1-50C02-600
DFSQ1-50C02-800
DFSQ1-50C02-1000
DFSQ1-50C02-1500

BK7

φ30mm

#240

BK7

φ30mm

#400

BK7

φ30mm

#600

BK7

φ30mm

#800

BK7

φ30mm

#1000

BK7

φ30mm

#1500

BK7

φ50mm

#240

BK7

φ50mm

#400

BK7

φ50mm

#600

BK7

φ50mm

#800

BK7

φ50mm

#1000

BK7

φ50mm

#1500

Synthetic fused silica

φ30mm

#240

Synthetic fused silica

φ30mm

#400

Synthetic fused silica

φ30mm

#600

Synthetic fused silica

φ30mm

#800

Synthetic fused silica

φ30mm

#1000

Synthetic fused silica

φ30mm

#1500

Synthetic fused silica

φ50mm

#240

Synthetic fused silica

φ50mm

#400

Synthetic fused silica

φ50mm

#600

Synthetic fused silica

φ50mm

#800

Synthetic fused silica

φ50mm

#1000

Synthetic fused silica

φ50mm

#1500

RoHS  

¥2,800

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¥2,800

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¥2,800

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¥2,800

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¥2,800

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¥2,800

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¥4,600

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¥4,600

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¥4,600

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¥4,600

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¥4,600

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¥4,600

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¥4,750

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¥4,750

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RoHS  

¥4,750

IN STOCK
RoHS  

¥4,750

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RoHS  

¥4,750

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¥4,750

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¥9,050

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¥9,050

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¥9,050

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¥9,050

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¥9,050

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¥9,050

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