Lumilass

New Active Fluoresence Glass

Exciting perspectives thanks to a molecular phenomenon

With Lumilass, SUMITA offers a new active fluorescence glass featuring high sensitivity, high durability and an extremely high excitation range. Lumilass offers highly efficient conversion of UV light into visible light.

The fluorescence of optical glass

Fluorescence is a molecular phenomenon in which a substance absorbs light at a certain wavelength and almost instantaneously radiates the light at longer wavelength and lower energy. These processes are known as excitation and emission. Many substances both organic and inorganic exhibit some fluorescence.

Fluorescence is mainly generated by point defects like color centers, which are known to be originated by rare earth elements and other critical impurities [1,2,3] in optical glass. The fluorescence behavior of a glass can be influenced by existing process technology and the use of higher purified raw materials.

Lumilass fluorescence glass –
features and fields of use

High fluorescent sensitivity, high durability and wide excitation range.

- Lumilass converts UV light into visible light
- Lumilass emits with rare-earth ion
- Lumilass comes in three colors of emission, blue, green, red
- Lumilass offers homogeneity which is equivalent to optical glas

Lumilass R7 Red fluorescence of 610nm by faint UV light in the 250-420 nm range.
Lumilass G9 Green florescence of 540nm by faint UV light in the 200-390nm range.
Lumilass B Blue fluorescence of 410nm by faint UV light in the 200-400nm range.

Lumilass is used in profilers for excimer lasers, as a standard test material for fluorescence characteristics and for decorative uses.

 

Active Rare Earth ion (concentration ions / cm3)

Main Glass Type

Lumilass-B

Eu2+ (1.9 x 1019)

Fluorophosphate

Lumilass-G9

Tb3+ (1.8 x 1021)

lanthanum crown

Lumilass-R7

Eu3+ (1.3 x 1021)

Borosilicate

Features at a glance

1) Vakuum UV-Anregung
2) Linearität von Fluoreszenz-Glas
3) Temperatureigenschaften von Fluoreszenz-Glas

Blue fluorescence of 410nm by faint UV light in the 200-400nm range.

 

Refractive (nd)

Specific gravity (g/cm3)

Liner Expansion Coefficient (x107/°C)

Vickers hardness (kgf/mm2)

Lumilass-B

1.477

3.65

176

344

 

 

LUMILASS-B

Transformation Point(˚C)

398

Thermal Expansion (1/˚C)

176 x 107

Specific Gravity (g/cm3)

3.65

Vickers Hardness (Kgf/mm2)

344

Young‘s Modulus (×109Pa)

65

Modulus of Rigidity (×109Pa)

25

 

 

Main Fluorescence Wavelength (nm)

405

Excitation Wavelength Range (nm)

200-400

Minimum Sensitivity (µW/cm2)

<1

Refractive Index (nd)

1.477

Green florescence of 540nm by faint UV light in the 200-390nm range

 

Refractive (nd)

Specific gravity (g/cm3)

Liner Expansion Coefficient (x107/°C)

Vickers hardness (kgf/mm2)

Lumilass-G9

1.694

3.76

73

765

 

 

LUMILASS-B

Transformation Point(˚C)

660

Thermal Expansion (1/˚C)

73x107

Specific Gravity (g/cm3)

3.76

Vickers Hardness (Kgf/mm2)

765

Young‘s Modulus (×109Pa)

114

Modulus of Rigidity (×109Pa)

44

 

 

Main Fluorescence Wavelength (nm)

540

Excitation Wavelength Range (nm)

200-390

Minimum Sensitivity (µW/cm2)

<1

Refractive Index (nd)

1.694

Red fluorescence of 610nm by faint UV light in the 250-420 nm range

 

Refractive (nd)

Specific gravity (g/cm3)

Liner Expansion Coefficient (x107/°C)

Vickers hardness (kgf/mm2)

Lumilass-R7

1.644

3.77

86

633

 

 

LUMILASS-R7

Transformation Point(˚C)

594

Thermal Expansion (1/˚C)

86x107

Specific Gravity (g/cm3)

3.77

Vickers Hardness (Kgf/mm2)

633

Young‘s Modulus (×109Pa)

90

Modulus of Rigidity (×109Pa)

34

 

 

Main Fluorescence Wavelength (nm)

610

Excitation Wavelength Range (nm)

200-420

Minimum Sensitivity (µW/cm2)

<1

Refractive Index (nd)

1.644

Creating the big picture.together.

SUMITA Optical Glass - seit über einem halben Jahrhundert
setzen wir Maßstäbe in den Bereichen Optisches Glas,
Faseroptik und Funktionsglas.
Mit Ihnen, unseren Partnern und Kunden.