All Questions
Tagged with optics geometric-optics
1,082
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Specular and diffuse reflection at the same time
if we know that tomatoes absorb all the light and reflect the red diffusely, how can we see the reflection of all the light specularly at the shinnig point? there isnt an absorption of other colors at ...
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Luneburg lens in a medium
A Luneburg lens is a spherical lens with a gradient refractive index. It has the interesting property that light coming from focal length of infinity will be focused on the surface of the lens.
The ...
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Image formation of object on itself by a system of a lens and a mirror
Suppose there is a lens and a mirror. An object is placed in front of this system (nearer to the lens). If the final image of object (refraction, reflection and again refraction) is formed on the ...
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Littrow Configuration Spectrometer
I have been studying the design of a spectrometer using a transmission diffraction grating. I stumbled upon this link, https://ibsen.com/technology/spectrometer-design-guide/. It explains a ...
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Difficulty in understanding an optics question
So here's the question:-
A thin film of transparent material of refractive index $1.52$ and thickness $0.42\ \rm \mu m$ forms a thin coating on glass of refractive index $1.60$. It is viewed by ...
CommunityBot
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How will Newton's rings look using a Concave-convex lens?
I want to examine lenses that are concave-convex (one for each side) using the Newton's rings method.
I'm trying to build the theoretical model for this, but I'm quite sure that the rays of light will ...
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Calculating mirror size for a teleprompter
I'm trying to calculate the required size of a mirror for a teleprompter application. The goal is to use the smallest possible mirror while still capturing the full image.
It's a straightforward setup,...
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Using multiple sources in Zemax mixed mode
In Ansys Zemax OpticStudio [I'm using 2023 R1.00 Pro (11)] sequential mode, the Multi-Configuration Editor can be used to make multiple paths for rays to trace through after the rays depart from a ...
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Direction of propagation of extraordinary wave inside a birefringent medium
I am reading Optics by Ajoy Ghatak, in which the author explains the phenomenon of double refraction in a calcite crystal using Huygens' principle. My query is in the analysis of the case of normal ...
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What’s the difference between a plano-convex lens and a convex-plano?
I guess they’re essentially the same but one (plano-convex) has the plane surface to the incoming ray and then the convex or spherical surface while the convex-plano have the spherical surface to the ...
CommunityBot
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3x3 beam transfer matrix tilt angle transformation [closed]
I'm trying to use the formalism from 'Generalized beam matrices. III. Application to
diffraction analysis' and 'Generalized beam matrices: Gaussian beam propagation in misaligned complex optical ...
- 3,778
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How to calculate the intensity of a light when using the ray model?
Suppose that there is a point light source with power $P$. We are interested in a single light ray visualised in the above picture. The ray travels a distance $r_1$ and encounters a surface. The ray ...
CommunityBot
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Identifying real and virtual images (convex lens experiment)
I m really confused between virtual and real images.
While doing a convex lens experiment using optical bench (I have attached an image), when I look through the lens I see an inverted image. As this ...
CommunityBot
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3
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Images formed by a pair of plane mirrors
I've been taught that if a point-sized object is placed between two plane mirrors at an angle theta with each other, then the number of images formed is $360^{\circ}/\theta$ or $360^{\circ}/\theta - 1$...
CommunityBot
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Why aren't all objects and their images same in size?
Suppose there is an object in front of a convex lens and we know that the light rays from each point on the surface of object will converge at a different point and form an image. So that means that ...
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