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There are four factors that affect projection dimensions: The size of the object (LCD panel or the physical size of the film for example), the projection distance, the size of the screen and the strength (focal length) of the lens. Given three of those, the fourth can be calculated. Video projector manufacturers rarely provide all the information required to do the calculation manually. Most projector manuals have charts or tables that assist in calculating the projectio distance for any given size of image. If the lenses can be changed, then there will be charts for each lens. A look at the manual will provide the information needed to select the right lens for any given installation. Almost all manufacturers have their manuals available for download on their web sites. If the application is unusual, it may be worth consulting a dealer and getting advice on the best lens / projector combination. Remember than particularly long or short focus lenses tend to be more expensive than others, so considering the projector placement may save a significant amount of money.
What else can I help you with?
Choose the correct answer An erect object placed outside the focal poit of a converging lens will produce an image that is?
Inverted
If you want to correct farsightedness you should choose a lens that is what?
To correct farsightedness (hyperopia), you should choose a lens that is convex, meaning it is thicker in the center and thinner at the edges. This type of lens helps to converge light rays before they enter the eye, allowing for clearer vision at close distances. Convex lenses are designated with a plus (+) power value, indicating their magnifying effect.
How do in correct a dark projection screen?
This questions is not really clear to me.Do you want to correct a dark projection screen in a rear projection TV or are you talking about a real projection screen?Thanks for clarifying.Otto TrommBeamax
How can you select fresnel lens at home projector?
To select a Fresnel lens for a home projector, first determine the desired projection size and distance from the lens to the screen. Look for a lens with a suitable focal length that matches your projection setup, typically around 10-20 inches for small projects. Ensure the lens has a high-quality optical clarity to minimize distortion. Finally, consider the lens size and shape to fit your projector design and housing.
What is a condenser lens used for?
A Condenser Lens is a device made up of a series of lenses and sometimes a mirror, that is used to gather and 'focus' light to direct it onto an object through a different projection lens.
Lens used for shortsightedness?
One uses a divergent lens to correct for shortsightedness.
What does a projection lens do?
A projection lens is designed to focus and enlarge an image from a light source, such as a slide or film, onto a flat surface like a screen or wall. It plays a crucial role in projectors by ensuring that the image maintains clarity and sharpness at varying distances. The lens shapes the light path, allowing for adjustments in size and focus, which enhances the overall viewing experience. Additionally, projection lenses can vary in design to accommodate different types of projectors and specific applications.
How do you make a Fresnel lens?
It's almost impossible for a person to just make a fresnel lens, it's made in factories, u can FOUND some of them in rear projection tvs
What lens can correct a myopia?
Diverging Lens are use (reading glasses) to help correct the problem of myopia helping fix the focus which causes items far away to seem fuzy and blurry.
Which map projection shows correct direction and shape but not size and distance?
B
Is this the correct spelling for choose?
Yes, the correct spelling is "choose."
What is a sentence for concave lens?
A Concave lens is used to correct short- sightedness.
