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Objective Lenses
P11
  • Objective Lenses

  • The achromatic Objective Lense is an infinity corrected lens used for axial achromatic correction.
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Product description:

The achromatic Objective Lense is an infinity corrected lens used for axial achromatic correction. It produces the same flat focus field for multiple imaging modes without introducing vignetting effect, so the observation image at the edge of the field of view can also be  natural and clear. The objective lense with focal length can also be compatible with other wavelengths, when femtosecond laser (such as 770~790nm) or near-infrared (such as 1064nm) laser aberration correction was applied. CASTECH's laser objective lenses have the characteristics of high NA, high LIDT, high transmission, and high flatness of field of view.

 

Applications:

● Coaxial Observation            

● Laser Import

● Laser Processing            

● Chromatic Aberration Correction

 

 

 

Telecentric F-Theta Lenses

Non-telecentric F-Theta Lenses

Advantage

• The shape of the central spot is 

consistent with that of the edge spot

• Small distortion of the spot

• Lower cost

Disadvantage

• Larger size

• High cost

• The magnification may varies with relative position

•Large difference in spot size between center and edge

 

 

Schematic diagram of  light path 

Objective Lenses Model Number:CAOL-w-e-l-n

Wavelength

(w)

Expansion

(e)

Distance

(l)

NA

(n)

1064 nm

20X

50X

20 mm

15.1 mm

0.45

0.67

...

  

 

Typical Specifications

Wavelength

Expansion

Distance

NA

Resolution

Transmission

1064 nm

20X

20 mm

0.45

0.61 μm

≥82%

 

 

Housing dimensions(mm):

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