Projection System Design w/ Fresnel & Proj Lenses - Harish

In summary, the conversation is about designing a projector using a fresnel lens and projection lens. The person needs to find and derive equations for the lenses and calculate the distances between them and the screen. They require specific values for d1, d2, d3, f1, f2, f3, and f4. They also mention needing to find the net magnification factor and express their lack of knowledge on fresnel lenses and their behavior. They request help from anyone who can provide information on forming combined lens equations with fresnel lenses.
  • #1
sharp81
32
0
hi,
i am in need of help pretty quickly here.i will have to design a projector design using a fresnel lens and the projection lens.i need to find and derive the equations for the lenses and calculate the distances between the lenses and the lens and the screen.
this is what i require to have :
d1 - distance from the light source to the fresnel lens
d2 - distance between the fresnel and the projection lens
d3 - distance between the projection lens and the screen
f1,f2 - focal lengths of the fresnel lens
f3,f4 - focal lengths of the projection lens
In my case i know the values of the focal lengths and the distance between the light source and the fresnel lens.

i will have to find d2 and d3. also i need to find the net magnification factor for the light source which will be my object.
i don't have much knowledge on the fresnel lenses and their lens equation as well as their behaviour.the only think i know is they have to be placed at the distance of the focal length in order for parallel light to pass through
any help will be greatly appreciated.
harish
 
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  • #2
please help me as soon as possible.Atleast some information regarding forming combined lens equations with fresnel lens will giude me in this aspect
 
  • #3
please help me moderator or someone
 

FAQ: Projection System Design w/ Fresnel & Proj Lenses - Harish

1.

What is a projection system?

A projection system is a device that projects images or videos onto a screen or surface using a light source and lenses. It is commonly used in theaters, classrooms, and home entertainment systems.

2.

What is a Fresnel lens?

A Fresnel lens is a type of lens that is made up of multiple concentric rings, which allows for a thinner and lighter lens compared to traditional lenses. It is commonly used in projection systems to focus and magnify light.

3.

What are the benefits of using a Fresnel lens in projection system design?

Using a Fresnel lens in projection system design can provide a larger and brighter image compared to traditional lenses. It also allows for a more compact and lightweight design, making it easier to transport and install.

4.

What factors should be considered when designing a projection system with Fresnel lenses?

When designing a projection system with Fresnel lenses, factors such as the size and shape of the screen, the distance between the projector and the screen, the brightness of the light source, and the quality of the lenses should be taken into consideration.

5.

How do I choose the right Fresnel lens for my projection system design?

The right Fresnel lens for a projection system design will depend on the specific requirements of the system. Factors such as the desired image size, throw distance, and level of brightness needed should be considered when selecting a Fresnel lens. Consulting with a professional or doing research on different lens options can also help in making an informed decision.

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