Questions tagged [optics]
Optics is a branch of physics describing the behaviors and properties of light (electromagnetic waves). Questions regarding the properties of light, it's interactions with matter and the instruments used to detect and deflect (or concentrate) light should be posted here.
180 questions
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Swing lens camera optics
I'm making my own rotating lens panoramic cameras and the latest has a 50mm lens with a 3mm slit 12.5mm from the film plane and the image has a lot smear to it where as the last camera I made has a ...
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Correlated Double Sampling and Saturation Effects
I want to understand the effects of saturation on a detector that uses correlated double sampling (CDS). It was explained to me by a colleague but it still hasn't completely set in. This is in regards ...
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Project a circle with adjustable angle of spread
The goal is to project a circle or a circle with inscribed cross (say from a red or green laser) onto a surface separated from the projector by a distance 'd'. The diameter of the circle should ...
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Digital projector technolgy
Which digital projection technology is suitable for high centrifugal forces (i.e., greater than 100 Gs during extended periods)? I've been looking into microLED pico projectors since this technology ...
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Lens focal length calculator for a 2D target at arbitrary orientation
My camera will be looking at a 22' x 20' rectangular area on the ground from 3' height, which is at a very low angle. All focal length calculators, I found, require target orientation perpendicular ...
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Collimator for ToF Sensor
Objective: I want to measure the distance between the ground, and the pin (object 43 in the picture) of a weighted fitness machine. What I have done so far: I am using a VL53L0X (time-of-flight ...
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What are good practical methods for handling/cleaning delicate optics?
I have a student job where I build optics assemblies coupled to PMTs. These optics assemblies include dropping small aspheric lenses into cylindrical slots. These lenses have a tendency to turn and ...
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Want to create a flexible endoscope/boroscope that records at a high speed frame rate (>200 frames per second)
Does anyone have ideas how I can engineer a flexible endoscope/boroscope of at least 90cm working length, ideally < 10mm diameter, which records video at a high frame rate (>200 frames/second, ...
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How is a hologram created using these a OLED display & transparent screen here
This is a project done by hacksmith industries on creating a real holographic display like that of tony stark. Source of the image: https://youtu.be/PI6VA8ZNL-0?si=hvdz56wsC_6D4za5 A) I have seen the ...
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IR bandpass filter / optical window for IR temperature sensor: how to take into account the absorption factor of the filter / window?
I am interested in taking measurements of ground surface temperature for some meteorology projects using IR temperature sensors, typically MLX90614 and similar (https://www.melexis.com/en/product/...
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Totally transparent material for rear projection
does there exist some material that is totally transparent - yet can serve as rear projection screen? something along the lines of transparent holographic rear projection foils on glass/PVC - but ...
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Light activated transparency
Does there exist material - plastic, fabric or whichever - which is naturally opaque, but becomes totally transparent when shining flashlight on it? The transparency should happen only in the area of ...
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LCD screen with extremely narrow field of view
i want to achieve extremely narrow field of view on an arbitrary large LCD screen with arbitrary pixel density basically i want the image to be visible only if looked at straight on any slightest tilt ...
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How are NanoLED and MicroLED computer screens designed differently?
How are NanoLED and MicroLED computer screens designed differently? The NanoLED trademark seems to indicate that the issue is probably marketing, and not different engineering or materials: I don't ...
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Does the addition of coloring ions change the IOR of glass?
The title is the question, but for a bit of context: I'm exploring the viability of a various optical designs and one particular part of the design space becomes very interesting if the colored ...
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