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

  • I
  • Thread starter Thread starter DhruvSorathiyaPhysic
  • Start date Start date
  • Tags Tags
    Lenses System
AI Thread Summary
To create an effective collimator lens system for converting diverging rays from an LCD into parallel rays, a multi-lens approach is recommended to minimize aberrations, specifically aspherical and chromatic. The design should incorporate lenses with varying focal lengths and refractive indices to enhance performance. A focal length of approximately 130 cm is desired for this application. Sketching the setup may help clarify the arrangement and interactions of the lenses. Overall, a well-designed lens system can significantly improve image quality by reducing optical aberrations.
DhruvSorathiyaPhysic
Messages
3
Reaction score
0
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
 
Science news on Phys.org
You know the formula from the preceding thread ...

What aberrations, precisely ?

Make a sketch of the situation !

##\ ##
 
  • Like
Likes Twigg and berkeman
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 ?
 
berkeman said:
How are you related to the other/first user
I'm guessing what you are already thinking ... :wink: :biggrin:
 
Thread 'A quartet of epi-illumination methods'
Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...

Similar threads

Back
Top