Objectives

Objectives are used to focus and magnify light in imaging systems, with designs optimized for UV, IR, visible, and high-power laser applications.

OptoSigma objectives offer 5x–100x magnification and support long working distance, cover glass compensation, and chromatic correction.

Reflective and broadband models are available. For custom designs, please contact us.

Selection Guide for Objective Lenses

Groups	Description	Design Wavelengths	Magnifications	Mounting Thread	Working Distance Range	Objective Families
UV Objectives	These UV objective lens are infinity corrected and can be used for laser machining with pulsed 3rd and 4th harmonic YAG Lasers. Chromatic aberration is suppressed in both the visible and UV laser wavelength, achieving a high transmittance. Available with glass thickness compensation.	266, 355 nm	10X 20X 50X 80X	M26	3.5-30.5mm	Ultra-Violet Objectives (266-355nm) Near Ultra-Violet Objectives (355-800 nm)
Visible Objectives	Visible objective lenses are available in standard and long working distance (LWD) versions. Chromatic aberration and infinity correction is available with LWD types. The objective will allow user to focus a visible laser or perform microscopic observation of objects from a distance.	400−700nm	1X 2X 5X 10X 20X 50X 100X	M20.32 (RMS) M26	0.3-45.3mm	Long Working Distance - PAL-PAL-L Standard - EPL-EPLE Low Cost – OBL
IR Objectives	IR objective lens have high numerical apertures and are infinity corrected. They are used for laser machining with pulsed fundamental-harmonic YAG Lasers. Chromatic aberration is suppressed in the visible laser wavelength, achieving a high transmittance. Available with glass thickness compensation.	1064nm	5X 10X 20X 50X 100X	M26	10-44mm	PAL-NIR-LC PAL-NIR
Multi-Wavelength YAG Laser Objectives	These objective lens can be used for machining with YAG lasers. A single objective can be used for all three harmonic wavelengths: 2nd HG, 3rd HG, and 4th HG. Multi-wavelength objectives are infinity corrected and have long working distances.	266, 355, 532nm	10X 20X 50X 80X	M26	10.0-15.1mm	YAG Triple Wavelength Objectives - PFL-UV - NUV-AG YAG 2-Wavelengths Objectives (355 and 532 nm)
Glass-Thickness-Compensated Objectives	These objectives are designed with compensation for cover glass-thickness aberrations, making it possible to realize ideal beam spot size and quality while processing thorough a cover glass. These objective lenses can be used for laser repair processing for LCD or OLED modules.	266, 355, 532, 1,064nm	10X 20X 50X 80X 100X	M26	9.65-30.85mm	UV Objectives-PFL-UV-AG-LC NUV Objectives - PFL-UV-LC NIR Objectives – PFL-NIR-LC
Reflective Objectives	These reflective microscope objective lenses eliminate chromatic aberration over a wide bandwidth from the UV to the MWIR. They are typically used in microscope-spectrometry and failure-analysis applications in the semiconductor industry.	350-7,000nm	10X 20X 50X 40X	M20.32 (RMS)	3.5-16mm	OBLR