Corroded Type Diffuser (Round Type)
After one side of the base glass plate was sanded, then corrode it by hydrogen fluoride so that the glass plate becomes a diffuser with a glassy frosted surface. Compared with ground glass diffuser, the corroded type diffuser may obtain better transmission but lower diffusivity.
Price List
| Model number |
Surface finishing |
Size |
List price (excl. tax) |
Caracter table |
| FS50C501 |
Single side corroded (50 %) |
ø50 mm (+0 / -0.2)
Thickness: 1.35 mm |
6,000 yen |
data sheet |
| FS50C502 |
Single side corroded (50 %) |
ø50 mm (+0 / -0.2)
Thickness: 2.2 mm |
6,000 yen |
data sheet |
| FS70C501 |
Single side corroded (70 %) |
ø50 mm (+0 / -0.2)
Thickness: 1.0 m |
6,000 yen |
data sheet |
| FS70C502 |
Single side corroded (70 %) |
ø50 mm (+0 / -0.2)
Thickness: 2.0 mm |
6,000 yen |
data sheet |
Transmittance Measuring Condition
Equipment : Shimadzu Spectrophotometer UV-3600
Distance between Ulbricht sphere (light intercepting side) and Diffuser (Standard sample position)
Note : Please notice that the above data is measured atmShibuya Optical Co., Ltd.. The transmittance data may be changed depends on actual using condition as well as production lot number. Please set the frosted side for the diffuser near to the light.
Ground Glass Diffuser (Round Type)
One side of the base glass plate was sanded so that the glass plate may obtain a delustering effect, and become a diffuser. The unprocessed side remained lustered. Roughness of the ground glass (sand surface) depends upon the roughness number of the sand (#number) that used when processing. The roughness number bigger, the ground diffuser becomes finer and the diffusivity lower.
| Model number |
Material |
Surface finishing |
Size |
List price (excl. tax) |
Caracter table |
| F240C501 |
Blue Plate |
Single side frosted (# 240) |
ø50 mm (+0 / -0.2)
Thickness: 1.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F500C501 |
Blue Plate |
Single side frosted (# 500) |
ø50 mm (+0 / -0.2)
Thickness: 1.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F700C501 |
Blue Plate |
Single side frosted (# 700) |
ø50 mm (+0 / -0.2)
Thickness: 1.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F1000C501 |
Blue Plate |
Single side frosted (# 1000) |
ø50 mm (+0 / -0.2)
Thickness: 1.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F240C502 |
Blue Plate |
Single side frosted (# 240) |
ø50 mm (+0 / -0.2)
Thickness: 2.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F500C502 |
Blue Plate |
Single side frosted (# 500) |
ø50 mm (+0 / -0.2)
Thickness: 2.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F700C502 |
Blue Plate |
Single side frosted (# 700) |
ø50 mm (+0 / -0.2)
Thickness: 2.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
| F1000C502 |
Blue Plate |
Single side frosted (# 1000) |
ø50 mm (+0 / -0.2)
Thickness: 2.0 mm (+0 / -0.3) |
5,000 yen |
data sheet |
Transmittance Measuring Condition
Equipment : Shimadzu Spectrophotometer UV-3150PC
Distance between Ulbricht sphere (light intercepting side) and Diffuser (Standard sample position)
Note : Please notice that the above data is measured atmShibuya Optical Co., Ltd.. The transmittance data may be changed depends on actual using condition as well as production lot number. Please set the frosted side for the diffuser near to the light.
Opal Glass Diffuser (Round Type)
One side of the base glass plate is glued with a thin milk white plate. Compared with ground diffuser, the transmission of Opal glass diffuser is kept very evenly within whole visible light area. But there is only one kind of Opal diffuser and cannot be used in ultraviolet area. Even different thickness, the transmittance keeps unchanged.
FO3C5030
Character Table
Note: All data shown here is actual data measured by Shibuya Optical. In case of using different measuring equipment, the data may change.
Price List
| Model number |
Material |
Surface finishing |
Size |
List price (excl. tax) |
| FO2C5024* |
Opal Glass |
Fire polishing |
ø50 mm (+0 / -0.2)
Thickness: 2.4 mm (+0 / -0.3) |
5,000 yen |
| FO3C5030* |
Opal Glass |
Fire polishing |
ø50 mm (+0 / -0.2)
Thickness: 3.0 mm (+0 / -0.3) |
5,000 yen |
* Marked items have been already discontinued to manufacture, but please contact with us, as we have some quantity of these discontinued items.
Transmittance Measuring Condition
Equipment : Shimadzu Spectrophotometer UV-3150PC
Distance between Ulbricht sphere (light intercepting side) and Diffuser (Standard sample position)
Note : Please notice that the above data is measured atmShibuya Optical Co., Ltd.. The transmittance data may be changed depends on actual using condition as well as production lot number. Please set the frosted side for the diffuser near to the light.
A frost type diffuser made of Fused Silica, Supports near-ultraviolet to near-infrared.
We will process it to your desired size.
F240-S50
Character Table
Price List
| Model number |
Material |
Surface finishing |
Size |
List price(excl. tax) |
Caracter table |
| F240-S4 |
Fused Silica |
Single Side Forested (# 240) |
4 x 4 mm
Thickness 1.5 mm |
2,000 yen |
data sheet |
| F240-S50 |
Fused Silica |
Single Side Forested (# 240) |
50 x 50 mm
Thickness 1.5 mm |
15,000 yen |
data sheet |
| F240-S127 |
Fused Silica |
Single Side Forested (# 240) |
127 x 127 mm
Thickness 1.5 mm |
30,000 yen |
data sheet |
Shibuya Optical Co., Ltd.