Up-Conversion Phosphor

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IR Laser Test Card

44 Anti-Stokes  Phosphor.pdf


Up-conversion Phosphor is a luminescent material that converts different invisible infrared light into visible light. Making full use of technology advantage of Chinese Academy of Sciences, KPT is the first company in China that develop this product, the quality has achieved the leading level of the world. it has characteristic of sensitive response, rich glowing colors, long lifetime, easy test and the most important-- high safety and concealed ability, by using it, IR (infrared ray) beam can be efficiently detected, tracked, identified and proofread etc

Up-conversion phosphor is suitable for various kinds of printing application, and will not have any worse effect while mixing with any types of inks. It's can be added in plastic, paper, cloth, ceramic, glass and solution etc. Laser pen or home appliance controller are selected to test this phosphor material.





Rare Earth Inorganic Crystal (no toxicant)

Average Particle Size 

40-100nm, 100-500nm, 0.5-2μm,  2-10μm, 10-20μm, 20-50μm

Abradability & Humidity resistance 


Temperature Resistance 

Property remains unchanged with temperature from  under zero 50 centigrade degree (long time) to 1000 centigrade degree (1hr)

Ultraviolet Rays Resistance 


Acid and Alkali Resistance 



Long term stability, do not react with organic solvent

Ink Combinability 

No change caused by mixing with various kinds of inks


Over 50 years

Appearance Color 

White or Pale White-pink Color

Specific Gravity 


Excitation Frequencies 

940-1060 nm ( wavelength at peak: 980 nm)

Emission Color and Frequencies 

Red color 610-630nm; Blue color 430-470nm; Green color: 530-560nm

Other Colors 

Totally been shielded (adjustable) or color changeable

Excitation Light Source 

Laser Emitter (1mW) / IR LED (10mW)

IR Laser Pen