Bi-convex lens, precision grade

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Bi-convex lenses are manufactured with an identical convex surface on both sides of the lens.

  • Bi-convex lenses have positive focal lengths and form both real and virtual images.
  • Aberrations such as coma, distortion, and chromatic aberration almost exactly cancel out at unit conjugate ratios due to the symmetry. Aberrations will increase as conjugate ratios depart from unity.
  • Recommended for virtual imaging of real objects, and for positive conjugate ratios from approximately 0.2 to 5. Values are wavelength sensitive.
  • Antireflection coatings can be ordered as an option.

General Specifications:

Parameter Value
Default unit mm
Material BK7
Diameter tolerance +0, -0.1mm
Clear aperture 90%
Focal length tolerance +/-1%
Center thickness tolerance +/-0.2mm
Centration 3 arc min
Surface quality 20-10

PN Description EFL Diameter BFL Tc Te Radius UnitPrice OrderOnline
DXP401 Bi-convex lens precision grade BK7 D= 5.0 EFL= 4.5 4.5 5 3.78 2 0.40 4.297 $15.25 Order
DXP005 Bi-convex lens precision grade BK7 D= 5.0 EFL= 10.0 10 5 9.10 2.6 1.96 9.910 $15.25 Order
DXP003 Bi-convex lens precision grade BK7 D= 6.0 EFL= 8.0 8 6 6.87 3.2 1.99 7.711 $15.25 Order
DXP013 Bi-convex lens precision grade BK7 D= 6.3 EFL= 12.7 12.7 6.3 11.74 2.8 2.00 12.679 $15.25 Order
DXP007 Bi-convex lens precision grade BK7 D= 7.5 EFL= 10.0 10 7.5 8.77 3.5 2.00 9.738 $15.25 Order
DXP017 Bi-convex lens precision grade BK7 D= 7.5 EFL= 15.0 15 7.5 14.01 2.9 1.95 15.049 $15.25 Order
DXP009 Bi-convex lens precision grade BK7 D= 10.0 EFL= 10.0 10 10 8.27 4.8 1.95 9.477 $15.25 Order
DXP065 Bi-convex lens precision grade BK7 D= 10.0 EFL= 33.0 33 10 32.10 2.7 1.96 33.768 $15.25 Order
DXP019 Bi-convex lens, precision grade BK7 D=14.5, EFL=15 15 14.5 12.90 5.9 2.00 14.479 $18.5 Order
DXP025 Bi-convex lens, precision grade BK7 D=15, EFL=20 20 15 18.30 4.9 2.00 19.875 $18.5 Order
DXP067 Bi-convex lens, precision grade BK7 D=19.5, EFL=35 35 19.5 33.40 4.7 2.00 35.489 $18.5 Order
DXP059 Bi-convex lens, precision grade BK7 D=20, EFL=31 31 20 29.20 5.3 2.00 31.229 $18.5 Order
DXP029 Bi-convex lens precision grade BK7 D= 20.0 EFL= 22.0 22 20 19.60 6.9 1.99 21.577 $18.5 Order
DXP027 Bi-convex lens precision grade BK7 D= 21.0 EFL= 20.0 20 21 17.09 8.2 1.96 19.239 $18.5 Order
DXP035 Bi-convex lens precision grade BK7 D= 22.4 EFL= 25.0 25 22.4 22.47 7.3 1.91 24.623 $18.5 Order
DXP055 Bi-convex lens precision grade BK7 D= 22.4 EFL= 30.0 30 22.4 27.85 6.3 1.96 30.007 $18.5 Order
DXP201 Bi-convex lens precision grade BK7 D= 22.4 EFL= 150.0 150 22.4 149.08 2.8 1.99 155.136 $18.5 Order
DXP103 Bi-convex lens precision grade BK7 D= 25.0 EFL= 50.0 50 25 48.29 5.1 1.99 50.986 $18.5 Order
DXP141 Bi-convex lens precision grade BK7 D= 25.0 EFL= 75.0 75 25 73.67 4 1.96 77.119 $18.5 Order
DXP061 Bi-convex lens precision grade BK7 D= 25.4 EFL= 31.7 31.7 25.4 29.20 7.3 1.97 31.589 $18.5 Order
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