Compare Model Drawings, CAD & Specs Availability Price
LIO-4X
Microscope Objective Lens, Infinity Corrected, 4x, 0.1 NA, 15.0 mm WD
$113
In Stock
 LIO-4X Microscope Objective Lens, Infinity Corrected, 4x, 0.1 NA, 15.0 mm WD
In Stock
 $113
LIO-10X
Microscope Objective Lens, Infinity Corrected, 10x, 0.25 NA, 10.8 mm WD
$131
In Stock
 LIO-10X Microscope Objective Lens, Infinity Corrected, 10x, 0.25 NA, 10.8 mm WD
In Stock
 $131
LIO-20X
Microscope Objective Lens, Infinity Corrected, 20x, 0.40 NA, 1.5 mm WD
$146
In Stock
 LIO-20X Microscope Objective Lens, Infinity Corrected, 20x, 0.40 NA, 1.5 mm WD
In Stock
 $146
LIO-40X
Microscope Objective Lens, Infinity Corrected, 40x, 0.65 NA, 0.8 mm WD
$158
In Stock
 LIO-40X Microscope Objective Lens, Infinity Corrected, 40x, 0.65 NA, 0.8 mm WD
In Stock
 $158
LIO-60X
Microscope Objective Lens, Infinity Corrected, 60x, 0.85 NA, 0.3 mm WD
$190
In Stock
 LIO-60X Microscope Objective Lens, Infinity Corrected, 60x, 0.85 NA, 0.3 mm WD
In Stock
 $190

Specifications

Features

Infinity Corrected Objective Lens

Infinity corrected objectives are used in a wide variety of imaging and laser focusing applications. Light rays leaving the objective’s rear aperture are collimated, so that for imaging applications, a secondary lens (usually called a tube lens) is needed in order to focus the collected light from the specimen onto the sensor. The labeled magnification is calculated, assuming the objective is being used with a tube lens of a particular focal length by design. When a tube lens of a different focal length is used, the magnification will need to be adjusted accordingly. As an advantage over finite conjugate objective lenses, a variety of auxiliary optical components, such as optical filters and polarizers can be inserted between the infinity objective lens and the tube lens without altering how the beam propagates and forms the image down the optical path. In laser applications such as optical tweezers and laser cutting, laser beams entering the rear aperture of an infinity objective can be tightly focused to a diffraction-limited spot, providing concentrated optical power and excellent resolution.

Ideal for Focusing and Collimating

Designed for diffraction limited performance across the entire visible spectrum, our LI series objectives allow collimated beams from lasers such as HeNe, Argon, or frequency double Nd:YAG to be focused to a small spot size. Our microscope objectives are broadband AR coated so that maximum about of light will be transmitted.

Spatial Filtering Applications

The LI series of microscope objectives can be used with the 900 series spatial filter system. By selecting an objective and corresponding pinhole, the laser beam can be spatial filtered such that the output beam quality is better. For a tutorial on spatial filters see Spatial Filter Technical Note.

Resources

Literature