>

F-θ Scan Lens

CASTECH's F-Theta lenses have a conventional working wavelength of 355nm. It has many advantages, such as high transmittance, high damage threshold and low F-theta distortion. It is widely used in laser processing. The product also has standard thread interface and protective window. In addition, it also can be customized to the working wavelength and appearance according to customer demand.


  • Introduction
  • Specification
  • Course
  • Download
  • Feedback

      F-Theta lenses are commonly used in laser marking,engraving, and cutting systems. F-Theta lens are designed to providea flat field at the image plane in the scanning system. CASTECH's F-Theta lenses have a conventional working wavelength of 355nm, inluding telecentric lenses and non-telecentric lenses. It has many advantages, such as high transmittance, high damage threshold and low F-theta distortion. It is widely used in laser processing. The product also has standard thread interface and protective window. In addition, it also can be customized to the working wavelength and appearance according to customer demand.


Features:                                             Applications:

◆ High efficiency AR coatings                                      Laser marking

High damage threshold                                             Laser engraving

Low F-Theta distortion                                               Laser cutting

Customized design available

 

Specifications:

Material
Fused Silica
Wavelength
355nm
EFL (mm)

109.4 (telecentric),160,174.1,255

BFL (mm)

153.5,196.99,219.48,321.7

Working distance (mm)

151.5,194.43,216.48,319.7

Scan angle ( °)
±24.3,±25,±25.3,±25.5
Scan length (mm)

91.8,140,151,224.8

Scan field (mm)

63×63,99×99,107×107,158×158

Entrance beam EP (mm)

6,7,7,10

m1/m2

13 / 35.5,13 / 23,13 / 20,13 / 28

M2 to mount edge (um)

26,15.87,13.72,21

Image spot size(1/e2)  (um)

12,15,16,17

Out diameter (mm)

121,90,90,107

Total length (mm)

88.5,55.7,51.98,60.5

Screw thread
M85×1
Transmission
>97%
Protective window
Yes

Product specifications are subject to change without notice;

Customized (Wavelength, Dimension, Power Handling , etc) are available;

Note:All products are RoHS compliant.

 

FT-355-109-63:

FT-355-160-99:

FT-355-174-107:

FT-355-255-158:

Example: of the product model number FT-355-255-158 described the working wavelength is 355nm, the effective focal length is 255mm and the scan field is 158mm * 158mm.

      F-Theta lenses are commonly used in laser marking,engraving, and cutting systems. F-Theta lens are designed to providea flat field at the image plane in the scanning system. The scan radial imageheight equals to focal length of the lens multiplied by the angle of the chiefray makes in the object space. The formula as follow:


2y’=EFL×2θ×π/180


 where2y’ is the scan length or diagonal, EFL is the focal length of the scan lens, 2θ is overall scan angle. 

Dear visitors! Please submit your feedback information!

  • *Name:
  • Company:
  • *Tel:
  • *Email:
  • *Message:
  • *Code:


Copyright© CASTECH Inc. all rights reserved 闽ICP备12014619号 Copyright 2012-2017 51helpdesk.com

+-