Reasonable Concave Lens BK7 30mm Diameter -60mm Focal Length 633 - 1064nm

S-SLB-30-60NIR1

This lower cost product offering of Concave lenses has only minimal reduction in quality and is perfect for most applications. It can be used in an optical systems such as observation or lighting applications when the higher surface quality Concave Lens (SLB-N) is not required.
◦It has the same specification of Concave Lens (SLB-N) except the surface quality and is ideal for experiments and applications where high-precision is not required.
◦There are two types of lens offer, a Plano concave lens with low spherical aberration and a biconcave lens that is used to shorten the focal length.
◦In addition to uncoated products, there are three types of anti-reflection coating for visible, near-infrared, and infrared.
More Information
Name Reasonable Concave Lens BK7 30mm Diameter -60mm Focal Length 633 - 1064nm
Weight 0.0500kgs
Standard Coatings Available No
Guide -
Remark -
Attention
  • Plano concave lens and biconcave lens has a chromatic aberration, and the focal length will vary depending on the wavelength. Please check the “wavelength characteristic of the focal length data” on “Technical Data” of Plano concave lenses (SLB-N) or Biconcave lenses (SLB-B-N) for the focal lengths of each wavelength.
  • WEB Reference Catalog Code/W3060-1, WEB Reference Catalog Code/W3050-1
  • Transmissions losses due to reflection off the front and rear surfaces of the lens can be minimized by coating the surfaces. Consult our Sales Division for anti-reflection coatings suitable for your application.
  • The outer edge of the concave side is chamfered and the result is possibility that the lens may have a smaller edge thickness for this design.
Diameter φD 30mm
Focal length 60mm
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (633 - 1064nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 633 - 1064nm
Diameter φD φ30mm
Focal length f −60mm
Edge thickness te 5.9mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
In stock
SKU
S-SLB-30-60NIR1
$42.00

Delivery in : 6-12 weeks

This lower cost product offering of Concave lenses has only minimal reduction in quality and is perfect for most applications. It can be used in an optical systems such as observation or lighting applications when the higher surface quality Concave Lens (SLB-N) is not required.

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