Fiber Optic Lenses-Lisen Optics

The lens is optimized for UV/visible/near-infrared spectral bands. One end of the collimating lens features an SMA connector for coupling with fiber components, and it has a black aluminum-coated housing that allows for focusing adjustments.

The LS-MC fiber optic focusing lens can reconverge the divergent light from the fiber into a single point, allowing point light sources to be coupled into the fiber. These Lens can produce the desired beam diameter for the output light or form an ideal spot size at a specific distance.

Diagram of Fiber Optic Collimating and Focusing Lens Connection

The lens is optimized for UV/visible/near-infrared spectral bands. One end of the collimating lens features an SMA connector for coupling with fiber components, and it has a black aluminum-coated housing that allows for focusing adjustments.

The LS-MC fiber optic focusing lens can reconverge the divergent light from the fiber into a single point, allowing point light sources to be coupled into the fiber. These Lens can produce the desired beam diameter for the output light or form an ideal spot size at a specific distance.

Diagram of Fiber Optic Collimating and Focusing Lens Connection

Principles of Spot Size Calculation

Example:

Given parameters of a microscope objective:10x，focal length f=200mm，numerical aperture NA=0.3=nSinθ. Generally, n=1 and θ is the divergence angle. The spot size can be calculated using the magnification.

Fiber Optic Lens Model Naming Rules

Fiber Optic Collimating Lens: LS-FOL + Divergence Angle + Spectral Range - Lens Structure

Example Model: LS-FOL01VR-B

Explanation:

· LS represents LiSen

· FOL stands for collimating lens

· 01 indicates a divergence angle of 1°

· VR* means a divergence angle of 1°, a spectral range of 380-2500 nm, and the material is K9/BK7 glass

· B specifies the lens structure of the fiber optic collimating lens

Principles of Spot Size Calculation

Example:

Given parameters of a microscope objective:10x，focal length f=200mm，numerical aperture NA=0.3=nSinθ. Generally, n=1 and θ is the divergence angle. The spot size can be calculated using the magnification.

Fiber Optic Lens Model Naming Rules

Fiber Optic Collimating Lens: LS-FOL + Divergence Angle + Spectral Range - Lens Structure

Example Model: LS-FOL01VR-B

Explanation:

· LS represents LiSen

· FOL stands for collimating lens

· 01 indicates a divergence angle of 1°

· VR* means a divergence angle of 1°, a spectral range of 380-2500 nm, and the material is K9/BK7 glass

· B specifies the lens structure of the fiber optic collimating lens

Fiber Optic Focusing Lens: LS-MC + Working Distance + Spot Size + Spectral Range - Lens Structure

Example Model: LS-MC7012UR-A

Explanation:

· LS represents LiSen

· MC stands for focusing lens

· 70 indicates a working distance of 70 mm

· 12 represents a focal spot size of 1.2 mm

· UR* specifies outer quartz lens material, a spectral range of 200-2500 nm

· A indicates the lens structure of the fiber optic focusing lens

Notes:

· UR: Typically refers to ultraviolet quartz lens material, with a general spectral range of 200-2500 nm (UV).

· VR: Generally denotes K9/BK7 glass material, with a common spectral range of 380-2500 nm (visible light).

Example：

Model	Lens Type	Spectral Range	Lens Structure
LS-FOL01VR(UR)-A	Collimating Lens	200-2500 nm / 380-2500 nm	A Structure
LS-MC7012VR-B	Focusing Lens	200-2500 nm	B Structure

Fiber Optic Focusing Lens: LS-MC + Working Distance + Spot Size + Spectral Range - Lens Structure

Example Model: LS-MC7012UR-A

Explanation:

· LS represents LiSen

· MC stands for focusing lens

· 70 indicates a working distance of 70 mm

· 12 represents a focal spot size of 1.2 mm

· UR* specifies outer quartz lens material, a spectral range of 200-2500 nm

· A indicates the lens structure of the fiber optic focusing lens

Notes:

· UR: Typically refers to ultraviolet quartz lens material, with a general spectral range of 200-2500 nm (UV).

· VR: Generally denotes K9/BK7 glass material, with a common spectral range of 380-2500 nm (visible light).

Example：

Model	Lens Type	Spectral Range	Lens Structure
LS-FOL01VR(UR)-A	Collimating Lens	200-2500 nm / 380-2500 nm	A Structure
LS-MC7012VR-B	Focusing Lens	200-2500 nm	B Structure

Main Technical Indicators

Model	LS-MC3016VR(UR)-A	LS-MC2315VR(UR)-A	LS-MC7625VR(UR)-A	LS-MC6010VR(UR)-A
Pic.
Name Type	Focusing Lens	Focusing Lens	Focusing Lens	Focusing Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600	200/400/600
Spot Size (mm)	1.6	1.5	2.5	1
Wavelength Range	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm
Focal Length	10 mm, 25.4 mm, -50.8 mm	15 mm	20 mm	19 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905	SMA905
Operating Temperature	-30~100℃	-30~100℃	-30~100℃	-30~100℃
Working Distance	30 mm	23 mm	76 mm	60 mm
Dimensions	Φ17.18*52.4	Φ17.18*62.1	Φ17.78*57.28	Φ17.78*57.28

Model	LS-MC5210VR(UR)-A	LS-MC5015VR(UR)-A	LS-MC7012VR-A	LS-MC7012VR-B
Pic.
Name Type	Focusing Lens	Focusing Lens	Focusing Lens	Focusing Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600	200/400/600
Spot Size (mm)	1	1.5	1.2	2.5
Thread	RMS	RMS (0.800"-36)	/	/
Wavelength Range	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	400-1000 nm	400-1000 nm
Focal Length	180 mm	180 mm	70 mm	70 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905	SMA905
Operating Temperature	-30~100℃	-30~100℃	/	/
Working Distance	52 mm	50 mm	70 mm	70 mm
Dimensions	Φ40*95.7	Φ40*95.66	Φ35*81 mm	Φ107*135 mm

Model	LS-FOL01VR(UR)-A	LS-FOL01VR-B	LS-FOL03VR(UR)-A
Pic.
Name Type	Collimating Lens	Collimating Lens	Collimating Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600
Divergence Angle	1°	1°	3°
Wavelength Range	380-2000 nm, 200-2500 nm	350-2000 nm, 380-2500 nm, 200-2500 nm	350-2000 nm, 380-2500 nm, 200-2500 nm
Focal Length	12.5 mm	20 mm	8.7 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905
Thread	/	/	UNF 3/8''-24
Operating Temperature	-30~100℃	-30~100℃	-30~100℃
Working Distance	82 mm	90 mm	15 mm
Dimensions	Φ10*23.5	Φ13*30.8	Φ12*20.5 mm

Main Technical Indicators

Model	LS-MC3016VR(UR)-A	LS-MC2315VR(UR)-A	LS-MC7625VR(UR)-A	LS-MC6010VR(UR)-A
Pic.
Name Type	Focusing Lens	Focusing Lens	Focusing Lens	Focusing Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600	200/400/600
Spot Size (mm)	1.6	1.5	2.5	1
Wavelength Range	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm
Focal Length	10 mm, 25.4 mm, -50.8 mm	15 mm	20 mm	19 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905	SMA905
Operating Temperature	-30~100℃	-30~100℃	-30~100℃	-30~100℃
Working Distance	30 mm	23 mm	76 mm	60 mm
Dimensions	Φ17.18*52.4	Φ17.18*62.1	Φ17.78*57.28	Φ17.78*57.28

Model	LS-MC5210VR(UR)-A	LS-MC5015VR(UR)-A	LS-MC7012VR-A	LS-MC7012VR-B
Pic.
Name Type	Focusing Lens	Focusing Lens	Focusing Lens	Focusing Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600	200/400/600
Spot Size (mm)	1	1.5	1.2	2.5
Thread	RMS	RMS (0.800"-36)	/	/
Wavelength Range	380-2500 nm, 200-2500 nm	380-2500 nm, 200-2500 nm	400-1000 nm	400-1000 nm
Focal Length	180 mm	180 mm	70 mm	70 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905	SMA905
Operating Temperature	-30~100℃	-30~100℃	/	/
Working Distance	52 mm	50 mm	70 mm	70 mm
Dimensions	Φ40*95.7	Φ40*95.66	Φ35*81 mm	Φ107*135 mm

Model	LS-FOL01VR(UR)-A	LS-FOL01VR-B	LS-FOL03VR(UR)-A
Pic.
Name Type	Collimating Lens	Collimating Lens	Collimating Lens
Fiber Core Diameter (μm)	200/400/600	200/400/600	200/400/600
Divergence Angle	1°	1°	3°
Wavelength Range	380-2000 nm, 200-2500 nm	350-2000 nm, 380-2500 nm, 200-2500 nm	350-2000 nm, 380-2500 nm, 200-2500 nm
Focal Length	12.5 mm	20 mm	8.7 mm
Lens Material	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica	K9 Optical Glass, UV Fused Silica
Fiber Connector	SMA905	SMA905	SMA905
Thread	/	/	UNF 3/8''-24
Operating Temperature	-30~100℃	-30~100℃	-30~100℃
Working Distance	82 mm	90 mm	15 mm
Dimensions	Φ10*23.5	Φ13*30.8	Φ12*20.5 mm

Fiber Optic Lenses

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