Features

• By using synthetic quartz as the lens material, we have realized a condensing lens that can withstand high-power lasers and high-energy pulsed lasers.
• It can be used for focusing and collimating various solid-state lasers such as Yb fiber laser, YAG laser, YVO4 laser, etc.
• For lenses with a focal length of 60 mm or more, spherical aberration and coma aberration are sufficiently corrected at a wavelength of 1064 nm, and the laser collimated light can be narrowed down to a spot diameter that is almost diffraction limited.
• The wide band antireflection coating allows it to be used in fiber coupled lasers in the 1040~1150 nm wavelength range.
• Since a certain transmittance of 632.8 nm is obtained, a He-Ne laser can be used as a guide light.
• A special lens holder (LHF-M29-25, LHF-M34-30, LHF-M50.9-50) is available for fixing the condenser lens.
• The HFTLSQ-15-20 PF1 comes with a special adapter for attaching to the fixed condenser lens holder (LHF-M29-25).
• The HFTLSQ-20-30 PF1 comes with a special adapter for attaching to the fixed condenser lens holder (LHF-M34-30).
• Protective glass, sold separately, can be installed to protect the lens from laser beam machining.
• * Use the condenser lens when you want to focus an object at infinity, or when you want to use the point light source as parallel light.
• Sufficient optical performance cannot be obtained when the camera is used for close-range imaging.
• * The condenser lens has an orientation that allows light to enter.
• * Be sure to allow parallel light to enter from the upper side (look at the engraving on the side of the lens barrel upright).
• * Doing so can cause chromatic aberration and spherical aberration to become large, which can increase the size of the focus spot, and can cause blurred images.
• Chromatic aberration and transmittance are reduced when the camera is used outside the specified wavelength range.
• * When using with a high power laser or near a high heat source, the focusing lens may become hot and the focal length of the focusing lens may change.
• * Heat dissipation measures are necessary when irradiating for a long time.
• * If you want to reduce the condensing spot diameter, widen the incident beam diameter (1/e^2) to about half the effective diameter (De) of the condensing lens.
• * This condenser lens is not an achromatic lens.
• Chromatic aberration is not corrected.