Home>Products and Service >Lenses >Biconvex Lenses

Biconvex Lenses > Fused Silica Biconvex Lens

Introduction

Biconvex lenses are manufactured with an identical convex surface on both sides of the lens it has 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.
 
 

Standard Specifications

  
 

Material

UV Grade Fused Silica or equivalent Optical Glass

Designed Wavelength

546.1 nm

Designed Index

1.46008±0.0005

Dimension Tolerance

+0.0/-0.2 mm

Thickness Tolerance

± 0.2 mm

Paraxial Focal Length

± 2%

Clear Aperture

> 90%

Centration

3 arc minutes

Flatness

λ/4 at 632.8 nm

Surface Quality

scratch and dig 60-40

Bevel

0.5 (0/-0.3) mm

Notes:

1. Material, besides fused silica, BK7 and any other materials are available.

2. Surface Quality could reach 40-20 or 20-10

3. Centration such as 1’, 30” is available.

4. Please show us the size and the coating specification		  
   

 

Part NO.

f(mm)

ф (mm)

R(mm)

tc(mm)

te(mm)

fb(mm)

LBX1201

15.0

12.7

12.90

5.3

2.0

13.1

LBX1202

20.0

12.7

17.69

4.4

2.0

18.4

LBX1203

25.0

12.7

22.38

3.8

2.0

23.7

LBX1204

30.0

12.7

27.04

3.5

2.0

28.8

LBX1205

40.0

12.7

36.31

3.1

2.0

38.9

LBX1301

25.0

25.4

21.22

10.4

2.0

21.1

LBX1302

35.0

25.4

30.99

7.4

2.0

32.4

LBX1303

50.0

25.4

45.10

5.7

2.0

48.0

LBX1304

75.0

25.4

68.32

4.4

2.0

73.5

LBX1305

100.0

25.4

91.42

3.8

2.0

98.7

LBX1306

150.0

25.4

137.52

3.2

2.0

148.9

LBX1307

200.0

25.4

183.58

2.9

2.0

199.0

LBX1308

250.0

25.4

229.61

2.7

2.0

249.1

LBX1309

300.0

25.4

275.64

2.6

2.0

299.1

LBX1311

500.0

25.4

459.71

2.4

2.0

499.2

LBX1312

1000.0

25.4

919.82

2.2

2.0

999.2

LBX1401

50.0

38.0

44.10

11.6

3.0

45.9

LBX1402

100.0

38.0

90.90

7.0

3.0

97.6

LBX1403

150.0

38.0

137.13

5.7

3.0

148.0

LBX1404

200.0

38.0

183.13

5.0

3.0

198.3

LBX1405

350.0

38.0

321.41

4.1

3.0

348.6

LBX1406

500.0

38.0

459.48

3.8

3.0

498.7

  

GO to Top