Finite LM Series
Coaxial tube lens, Mechanical tube length 240mm

Coaxial tube lens, Mechanical tube length 240mm / long working distance objective lens Series of finite objective lens of mechanical tube length of 240mm. Working distance is longer than DM series objective lenses.

 

 

 

SPECIFICATIONS

Model#	PLM-3	LM-5	LM-10
Magnification	3x	5x	10x
Working distance	12.5mm	21mm	12.3mm
Focal distance ( f )	37.9mm	22.17mm	11.72mm
N.A	0.10	0.25	0.4
Resolution	3.4µm	1.3µm	0.8µm
Focal Depth（±D.F）	27.5µm	4.4µm	1.7µm
Weight	52g	85g	88g

 

Model#	LM-20	LM-40	LM-Plan100xDRY
Magnification	20x	40x	100x
Working distance	12.2mm	6.8mm	3.4mm
Focal distance ( f )	11.45mm	6.06mm	2.33mm
N.A	0.30	0.45	0.80
Resolution	1.1µm	0.7µm	0.4µm
Focal Depth（±D.F）	3.0µm	1.4µm	0.4µm
Weight	76g	82g	95g

 

 

Note: Resolution and focal depth of objective lens is calculated using the wavelength of (λ=0.55nm). R=0.61x0.55/N.A Focal depth ±D (μm ) =λ/ ( 2 (N.A)2 )

 

ACCESSORIES:

MS-240:F20-W frosted filter / MS-240-S : F20-W frosted filter , spare lamp 7388 ( 6V20W ) / FA-621R power supply ( Refer on page 40 ) 1 each

 

 

 

 

Catalog and Dimensions (click to download pdf)