SINGLE LENSES
AND DOUBLETS
convex and concave spherical lenses, aspherical lenses
cylindrical lenses
Do you have doubts about which components to use and what tolerances to require for your specific application? Are you unsure about the functionality of your optical system. If you want, we can verify that your design meets the requirements, evaluate the tolerances needed, and support you in opto-mechanical integration. We have 30 years of experience in developing optical systems so we can evaluate the functionality of your design, follow you in choosing and characterizing the necessary components. and help you in finalizing your design.
As for the following lenses you will find test plates available and we can help you in fitting, subject to the possibility of making new shapes if necessary. However, it is worth remembering that better performance is achieved by using existing test plates whose characteristics are known accurately, rather than developing new ones where a shape tolerance will certainly have to be taken into account.
PLANO-CONVEX LENSES
Diameter: 1mm-250mm
Clear aperture : 90%
Shape tolerances: 3/2 (0.5)
Flatness = < λ/5 @ 633nm
Centering = 3′ (STD) – 1′ (HQ)
Surface quality : 60/40 (STD) , 40/20 (HQ)
Dimensional tolerances : DIA 0/-0.1, THK +/-0.05mm
Coating : BBAR R<0.5 in 400-680nm e AOI = 0°
BICONVEX LENSES
Diameter: 1mm-250mm
Clear aperture : 90%
Shape tolerances: 3/2 (0.5)
Centering = 3′ (STD) – 1′ (HQ)
Surface quality : 60/40 (STD) , 40/20 (HQ)
Dimensional tolerances : DIA 0/-0.1, THK +/-0.05mm
Coating : BBAR R<0.5 in 400-680nm e AOI = 0°
LENTI PLANO-CONCAVE (PCV)
Diameter: 1mm – 300mm
Surface quality: 60/40, 40/20, 20/10
Flatness = < λ/5 @ 633nm = < λ/5 @ 633nm
Shape error: λ/2@632.8nm
Centering: <3arc min ~ 30arc sec
Chamfer <0.2 millimetri × 45
LENTI BICONCAVE (BCV)
Diameter: 1mm – 300mm 0/-0.1 (<0.2% if DIA<10mm)
Clear aperture > 85% DIA
Surface quality = 60/40, 40/20
Cemtering: <3arc min ~ 30arc sec
Chamfer <0.2 millimetri × 45
DOUBLETS
Composition of two lenses with different refractive index that can partially correct colorimetric aberration. The two glasses have CTEs that are not too different to avoid fracture in thermal cycling.
ASPHERICAL LENSES
These lenses, used primarily for spherical aberration correction, can be made with varying degrees of precision and relative cost. For applications where particularly high precision is not required they can be made by plastic deformation by compression while for high imaging they can be made by machining with higher costs, related to processing time. These lenses are defined by giving the asphericity coefficients added to the spherical component. The equation defining the aspheric is as follows for even and odd asphere:
CYLINDRICAL LENSES
Material Optical glasses, fused silica, silica, etc.
Diameter: 0.5mm ~ 150mm
Diameter tolerances : 0/-0.1mm
Focal length -50mm ~ 2000mm ±2% (<10mm)
Focal length tolerance : ±0.5%<10mm – 1000mm)
Centration <3 arc min <10 arc sec
Clear aperture >85% ~92% of diameter
Surface quality: 60/40 – 10/5
BALL LENSES
MICRO-LENSES
Micro-optics require tolerances dictated by the specific application. Micro-optics are more complex to manufacture and also require a specific optomechanical structure that does not introduce errors that can significantly penalize optical performance. Again, we can support you and perform a tolerance analysis for you so that the required optical performance is guaranteed.
Lenti per applicazioni IR
Sono lenti realizzate in Silicon, Germanium, CaF2, MgF2
