Optical glass

OPTICAL GLASS OVERVIEW

Optical glass plays an essential role in science and industry.

Glass making has a long history beginning with the traditional single-batch process. But it now is mainly produced in a continuous melting process. The basic form of glass, an amorphous material, is a melt of silicon dioxide. The melt is cooled down in a way that it solidifies into a solid without forming a crystalline structure. Optical glass acquires its properties via their chemical composition, melting process and finishing methods. In order to obtain specific optical properties, chemical compositions must often be chosen that sometimes lead to products with less than optimum chemical resistance.

There are two common optical glasses: flint glass and crown glass. The difference between the two lies in their index of refraction; however, both are known for their Abbe numbers generally under 60.

The table below shows comparable materials from different manufacturers.

 

Optical Glass Cross Reference Chart
SCHOTT		OHARA		HIKARI		CDGM
N-BK7		S-BSL7		J-BK7		H-K9L
–		S-TIM8		J-F8		H-QF14
–		S-TIM5		J-F5		H-F1
N-SK2		S-BSM2		J-SK2		H-ZK50
N-F2		S-TIM2		J-F2		H-F4
N-SF2		S-TIM22		J-SF2		H-ZF1
N-SF5		S-TIM25		J-SF5		H-ZF2
N-SF8		S-TIM28		J-SF8		H-ZF10
N-SF1		S-TIH1		J-SF1		H-ZF3
N-SF10		S-TIH10		J-SF10		H-ZF4
N-SF4		S-TIH4		J-SF4		H-ZF6
N-SF11		S-TIH11		J-SF11		H-ZF13
N-SF6		S-TIH6		J-SF6		H-ZF7LA
N-SF57		S-TIH53		J-SF03		H-ZF52A

 

 

AVAILABLE MATERIALS

Photonchina offers the following optical glass materials.

 

N-B270

 

N-BK7

 

N-SF11

 

N-SF2

 

BOROFLOAT

 

If you don’t see an optical components that you need or have any questions, please contact our sales engineer at sales@photonchinaa.com, who will response your inquiry in time.