Databbook 7-(NIR Lens) 鏡頭   

Optical & Opto-Electronic Systems



  • High Resolution Lenses

  • NIR Lenses

  • Others

Opto-mechanical design of lenses requires the integration of optical design with good mechanical practices and system considerations. The correct approach to the design is a comprehensive specification encompassing all the important parameters for the specific application. The performance specification defines the application and how the lens will operate, while the constraints must be detailed and include the following:

· Performance requirements

· F/N

· Wavelength range

· Iris requirement

· Distortion

· Vignetting

· Object size

· Magnification
· Focal length
· Focus requirement
· Resolution
· Working distance
· Sensor size

· Size, shape and weight limitations

· Special optical thin film coating needs

· Interfaces (optical, mechanical, electronic, etc.)

· Operating environment (temperature, pressure, humidity, vibration, etc.)

· Loads (static and dynamic)

· Center of gravity

· Material selection limitations

· Finish/color requirements

· Special marketing or identification

· Storage, packing and shipping requirements

In the NIR application a special attention has been devoted to the following aspect :

- Optical transmission

- Aperture (F/N)

- Glass types

- Resolution

- Antireflection Coating

- Wavelength range

: More than 80%
Not less thanF/N=2

No toxics glasses
: More than 20lp/mm at 50% contrast
R<1% over th
e wavelength range
: 0.9 ¸1.7 mm and 1.7 ¸ 2.3 mm

As an example, some curves about the resolution and transmission are reported.

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