How to make the best collimator using a system of lenses?

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  • Thread starter Thread starter DhruvSorathiyaPhysic
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SUMMARY

The discussion focuses on designing a collimator lens system to convert diverging rays from an LCD screen into parallel rays, specifically targeting a focal length of 130 cm. Participants emphasize the importance of using a system of lenses to minimize aberrations, particularly aspherical and chromatic aberrations, rather than relying on a single lens. Suggestions include utilizing lenses with varying focal lengths and refractive indices to achieve optimal collimation.

PREREQUISITES
  • Understanding of optical aberrations, specifically aspherical and chromatic aberrations
  • Knowledge of lens systems and their configurations
  • Familiarity with focal length concepts in optics
  • Basic principles of light propagation and collimation
NEXT STEPS
  • Research the design principles of multi-lens systems for optical applications
  • Explore methods to calculate and minimize optical aberrations in lens systems
  • Learn about different types of lenses and their refractive indices
  • Investigate practical applications of collimators in optical devices
USEFUL FOR

Optical engineers, physics students, and hobbyists interested in lens design and optical systems will benefit from this discussion.

DhruvSorathiyaPhysic
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I want to make a collimator lens which can convert the diverging rays from and LCD at finite distance screen into parallel rays.
But in order to reduce the aberrations, using system of lens is preferable than using a single lens. Can you suggest the way to create this kind of system please. I need focal length around 130 cm.

regard,
Student Satellite team
IIT Bombay
 
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You know the formula from the preceding thread ...

What aberrations, precisely ?

Make a sketch of the situation !

##\ ##
 
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first of all thanks for helping.
Aberration types are nothing but Aspherical and Chromatic.
Any lens will definitely create some aberration but we don't want that right ? So I Found somewhere that using system of lens which have different focal length and different refractive index instead of a single lens reduces aberration. So my question is that how can we make system of lenses which can collimate a LCD image.
 
DhruvSorathiyaPhysic said:
first of all thanks for helping.
Aberration types are nothing but Aspherical and Chromatic.
Any lens will definitely create some aberration but we don't want that right ? So I Found somewhere that using system of lens which have different focal length and different refractive index instead of a single lens reduces aberration. So my question is that how can we make system of lenses which can collimate a LCD image.
How are you related to the other/first user @DhruvSorathiya ?
 
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berkeman said:
How are you related to the other/first user
I'm guessing what you are already thinking ... :wink: :biggrin:
 
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