Double-Concave Lenses
Double-Concave Lenses

Double-Concave Lenses

DCV-9-18

1
Double-concave lens (uncoated)
Estimate separately
Classification Double-concave lens (DCV)
Coating Uncoated
External form D(mm) φ9.0
f(mm) -18.0
Material N-BK7
Design Wavelength DWL 587.6nm
YESRoHS対応状況

Product documentation

Description

Double-concave (DCV) lens has two inward curved surfaces and a negative focal length. This is used for image reduction and to spread light.

Specifications

Classification Double-concave lens (DCV)
Coating Uncoated
External form D(mm) φ9.0
f(mm) -18.0
B.f(mm) -18.49
t1(mm) 2.45
t2(mm) 1.5
Radius R1(mm) -18.86
Material N-BK7
Surface quality 40-20
Clear Aperture(mm) [Dia.] -1.0
Externals Tolerance(mm) 0/-0.1
Enter Thickness Tolerance(mm) ±0.1
Centering(mm) 3′~5′
Bevel MAX 0.25
Design Wavelength DWL 587.6nm
Focal Length Tolerance(mm) ±1%
Edge Thickness ET Reference

Curve(FOR REFERENCE ONLY)

Specification drawings(or pictures)