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Questions tagged [ccd]

Charge Coupled Device - a series of MOS capacitors with over lapping electrodes that form depletion regions in a Si substrate that when operated in sequence form a bucket brigade device. Originally developed for sampled analog signal processing, they primary saw their hey day as Image sensor devices. Usually referred to in their image sensor capacity.

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Different Vertical and Horizontal full well capacities for CCD image sensors

I want to use a line sensor for a medical imaging application. I understand that the full well capacity of the pixel is the maximum number of photo-electrons it can store before it gets saturated. I ...
AragornElessar's user avatar
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S11108 CMOS linear image sensor not working

I'm looking for help/advise working with a S11108 is a CMOS linear image sensor. My son is studying computer science at university who has been helping. We are using the S11108 to scan a moving ...
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Weird output from TCD1304

I'm working on a project where I need to interact Arduino Nano RP2040 with TCD1304 linear CCD. I managed to solve the signal generating problem and analog reading speed problem with PIO and DMA. First,...
TWTom's user avatar
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How is CCD data converted to frames in practice?

After reading this article I noticed that one can sample CCD by an ADC and convert the signal waveform to image since each pixel's color is function of ADC sample. Lets say we can sample this CCD ...
GNZ's user avatar
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How are the pixel charges relate to two analog voltages for this CCD camera?

A CCD pixel area is represented as in the figure below: And somehow in a CCD camera like this one each pixel converts the light upon it to charge. There are 1024 pixel elements in one of the model. ...
GNZ's user avatar
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Three voltage levels driver

I am trying to come up with a circuit that would have two 3.3 V logic inputs and that outputs three different voltages 15 V, 0V, -7 V (Vhigh, Vmid, Vlow) into the same line (CCD vertical driver) that ...
Ivan Demyachenko's user avatar
1 vote
1 answer
177 views

CCD sensor Reset gate and Substrate clocks

I am trying to understand the datasheet on Sony ICX404AL CCD sensor and design a small circuit with it. However I am a bit confused with Reset gate and Substrate clock signals. Information from the ...
Ivan Demyachenko's user avatar
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Panasonic MN39470PT CCD Sensor Timing

The datasheet for the MN39470PT CCD sensor seems to be missing some details regarding the timing needed to drive the sensor. For this reason I'm very confused on how I'd drive the sensor particularly ...
The Movie Man's user avatar
2 votes
2 answers
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Why are CCD images better than CMOS?

I read that CMOS image sensor technology was discovered first but then they had more noise and thus once CCD was invented, CCD got popular because of better image quality. After decades, now we use ...
Hari Krishna's user avatar
4 votes
1 answer
163 views

CCD sensor cleaning

My lab is using an in-vacuum CCD camera to detect XUV light. The sensor is bare, it has no glass cover due to needing to detect XUV. Somehow this sensor got an oily film deposited on it in the past, ...
mccragre0001's user avatar
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Cannot find datasheet for CMOS sensor

can anyone please help me identify a datasheet for that CCD/CMOS sensor ? on the camera it says CCD but i highly doubt it since it's 4 dollars. it's a reverse camera and i want to remove the overlay, ...
Omarico7's user avatar
4 votes
2 answers
172 views

Signal averaging CCD

I'm thinking about signal to noise ratio of CCDs and I hope this is the right location to post my question. The Hamamatsu Learning Center seems to be a good starting point to learn about CCDs. I ...
Deglupta's user avatar
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Recording multiple pixels simultaneously in CMOS or CCD image sensors

Is it possible to recording multiple pixels simultaneously in CMOS or CCD image sensors? Because of the low intensity of radiation I need to increase the surface area of the each pixel (photodetector)....
aSedali's user avatar
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1 answer
177 views

Charge transfer in CCD

I have a basic doubt about charge transfer between pixels of a CCD. Let's consider this animation (picture taken from wikipedia): A precise time sequence of applied voltages between gates and bulk ...
Kinka-Byo's user avatar
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262 views

What is the purpose of non-black dummy pixels in a linear CCD?

I'm studying the datasheet of Sony ILX511 linear CCD (PDF). On the Clock Timing Diagram, first 32 or 33 (depending on the mode) clock cycles give out dummy pixels, and only 18 of them are Optical ...
Ruslan's user avatar
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Is there such a thing as analog and digital compatible cmos or ccd sensors?

I'm way over my head with this one but I am trying to learn about cmos/ccd(preferred) sensors in order to build my own camera. Looking to get analog video from a sensor in a very small package size &...
usernamechecksout's user avatar
1 vote
1 answer
197 views

Further Understanding Optical Parameter of Image Sensors for Use In Spectroscopy

I’m attempting to build a spectrometer and I’m having difficulty assessing the performance of a particular sensor. I am a novice and other posts on this forum have helped me greatly but I still haven’...
user3338262's user avatar
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1 answer
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What is this "drive circuit" for CCD sensor referenced to?

I had a look at the TCD1304DG CCD sensor which I consider using in a project. The datasheet is pretty lucid, but I couldn't figure out what the following diagram is supposed to say: Is this just a ...
Sim Son's user avatar
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Can I use Highspeed Opamp as differential clock driver?

I want to use high speed Opamp LT1364 as +/- 15V clock driver of same voltage instead of typical CMOS / CCD clock drivers with lower voltage and slew rate. CMRR : 90dB PSRR : 100dB Slew rate : 1kV/uS ...
Abhishek Parikh's user avatar
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1 answer
151 views

ccd with response “time constant” of less than 0.5 ns & maximum “radiant sensitivity” exceeding 10 mA/W

I'm building a Raman Spectrometer. Update: For this Stellarnet Sony ILX511 CCD. https://www.stellarnet.us/wp-content/uploads/ILX511.pdf What is its response “time constant”? How do you understand ...
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Unused lines in RGB linescan sensor

For the exploration of a CCD line scan sensor, I would like to ignore two colors on an RGB sensor. What should I do? Just not connect clocks and outputs? Tie them to ground? The sensor in question ...
rmalchow's user avatar
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Noisy signals with 2-layer PCB - What's wrong with my design?

For my master's thesis in computer science, I need to read out a TCD1304AP linear CCD sensor. A STM32 microcontroller with the circuit laid out on a breadboard gets the job done, but in order to make ...
christianPro's user avatar
3 votes
2 answers
466 views

ccd application circuit

I'm trying to use a ccd linear image sensor (µPD3753) and I'm using the application circuit example in its datsheet, however I'm new at using these type of sensors. Can someone please explain why they'...
Diana Laura Jacinto's user avatar
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1 answer
176 views

What is the difference CMOS and CCD image sensors? In terms of Infrared spectrum [closed]

What is the difference between CMOS and CCD image sensor arrays? i.e working principles. Please consider in infrared spectrum. Which one's fabrication is expensive/ or cheap ? Which one gives ...
doner_t's user avatar
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CCD sensor: Digital Counts vs Exposure plot vs Dark Digital Counts

First, my question concerns an individual pixel/sensor from a CCD array of a digital camera. From my understanding, the Digital Counts is linear with Exposure time. However, this line will be ...
user3731622's user avatar
6 votes
2 answers
5k views

Why is 30MHz Clock signal distorted on oscilloscope?

I'm trying to probe a 30MHz clock signal, coming from an FPGA and routed to a CCD sensor. There are no other components, other than connectors, between source/destination. When I probe this signal ...
Xander's user avatar
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1 answer
3k views

How to estimate green or yellow based on the output of RCCC CMOS image sensor

RCCC is a kind of color filter array with one Red filter and three Clear filters, which means it only outputs red color or monochrome signal (Interfacing Red/Clear Sensors ) I know that some RCCC ...
oilpig's user avatar
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1 answer
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PIC24E PWM ISR hangs?

I am working with PIC24EP256GP204. The CPU frequency is 64 MHz. I am generating two PWM pulses for TCD1304AP CCD sensor and two PWM pulses for WM8253 ADC AFE. My problem lies with PWM pulses for ADC ...
abhiarora's user avatar
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2 answers
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Largest spectrum image sensor and processing its entire spectrum image

I was developing a digital system to process raw images stemming from an image sensor but I would like to deal with "universal" (as possible) spectrum image sensors with no filter. I know that for ...
D3m's user avatar
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2 votes
6 answers
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Can camera sensors be damaged by light?

Suppose a 3.3 V white (or any colour) LED with a current draw of 20 mA is shone into the lens of a cheap webcam (or any budget camera) at close range (< 3 cm) for a long period of time (24 hrs) or ...
John M.'s user avatar
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2 votes
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1k views

Op-amps vs common drain amplifier for photodiode integration

I've been playing around with photodiodes and op-amps lately, and thought it might be fun to construct a really crude camera with a dozen pixels. I was going to model it on an active-pixel CMOS ...
Zach's user avatar
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4 votes
0 answers
744 views

Sony ILX186K Linear CCD Datasheet

I'm looking for the datasheet for a Sony ILX186K linear CCD sensor I've salvaged from a document scanner. This part was discontinued several years ago and the datasheet seems to be unavailable online ...
bhillam's user avatar
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2 votes
2 answers
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Electric Shutter Functions for CCDs Raspberry pi

I have been trying to incorporate CCD linear array into my circuit. However, I have never dealt with electric shutter functions which are necessary to operate the CCD. Here is the link to the ...
pozza's user avatar
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1 answer
215 views

taking long exposure image with CCD sensor

Assuming you use a CCD image sensor, would it be possible for you to take images with exposure time of 1s without stacking image? I'm wondering how you can decrease data rate of the CCD. CCD camera ...
SD11's user avatar
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1 answer
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Develop a system to differentiate laser pointers from the ambient light based on the information collected by two arrays of digital FPA detectors

I would like to develop a system to differentiate laser pointers from the ambient light based on the information collected by two arrays of digital FPA detectors embedded inside the cavity of a ...
Frank's user avatar
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-2 votes
1 answer
817 views

How can I build a laser detector whit ILX554B CCD linear?

I am trying to build a CCD camera with a Sony ILX554B CCD Linear sensor to work with optical experiments. My problem is that I have this sensor, but I can't find an explanation or relevant circuit to ...
Imad Zairig's user avatar
4 votes
1 answer
377 views

What component most limits a camera's frame rate?

I have a quick question here when I started wondering how they made slo-mo cameras: What is the part that most limits frame rates in average smartphone cameras? Is it the CCD chip, or a component in ...
Keychain1's user avatar
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0 votes
2 answers
193 views

CCD resolutions in camera

I would like to know what are the available (industry standard) CCD sensor resolutions for cameras in the visible light. What is the highest CCD resolution that can be found in the industry?
m_power's user avatar
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1 vote
1 answer
456 views

Could a barcode scanner be used to get surface depth information?

(if tl;dr, go to the part where it says "actual question") this is probably a very obscure question, but: I'm working on a rather complex art installation with computer-generated sculptures, and I'm ...
Jakub Fiala's user avatar
1 vote
1 answer
555 views

CCD Reset switch and sense capacitor

I'm trying to understand the circuit in figure 1 of this document which describes CCD interfacing (http://www.analog.com/library/analogdialogue/archives/32-1/signal_pro.html). Shown below: (source: ...
new299's user avatar
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2 votes
1 answer
1k views

OV7670 frames are 640x308 not 640x480

There is a lot of helpful information on the internet about getting the OV7670 camera up and running but the following problem has me a bit stumped. I am using a Maple r5 Board (STM32F103RBT6) to ...
Eidelon's user avatar
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1 vote
1 answer
369 views

How do they read out HD, high frame rate CCD image sensors

Having little experience with CCD image sensors, I have learned that reading pixels via shift registers from a relatively large size CCD must be fast to achieve some reasonable frame rate. Let's say, ...
Nazar's user avatar
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1 vote
3 answers
623 views

Need help finding datasheet or pinout for Toshiba TCD2907DG

I really want to play with Toshiba TCD2907DG - this is color linear CCD sensor. I've found a number of datasheets for other TCD*, but not this one. I would really appreciate any reference to ...
BarsMonster's user avatar
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4 votes
1 answer
761 views

High-Sensitivity, Low-Latency Imaging Sensor

This might be a bit of a long shot for this venue, but: I'm looking into sensors for a scientific imaging application where the key is excellent sensitivity (quantum efficiency and noise performance) ...
dnadlinger's user avatar
0 votes
2 answers
684 views

Blocking wait for pin change on a LPC1114 microcontroller

I need to synchronize the rising edge of a PWM with another signal pulse's falling edge on a LPC1114FN28 (trying to drive a TCD1304DG), but am failing to achieve this so far. I have tried the ...
Matouš Vrba's user avatar
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1 answer
852 views

How does the iso work in ccd\cmos array detectors

I'm curious to know how exactly does the iso sensitivity work in ccd's or cmos detectors that DSLR cameras have? I understand this is a amplification of the raw signal that each pixel has, but is in ...
bla's user avatar
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2 votes
2 answers
2k views

Convert counts CCD output to irradiance units

I'm performing some tests with a spectrometer (a model similar to this one but more recent) equipped with a CCD. I can only output to counts, not W/(m^2*nm) (ie: irradiance units) which is what ...
Gabriel's user avatar
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6 votes
4 answers
7k views

Difference between Buried Photodiode and Pinned Photodiode

What is the difference between Buried Photodiode and Pinned Photodiode? I understand that the P+/N/P structure where the P+ and P layers have the same potential is the Pinned Photodiode. So what is ...
Vova's user avatar
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6 votes
1 answer
9k views

What's the difference between a thermal imaging sensor and an infrared CCD?

I was always under the impression that thermal radiation is essentially infrared energy, so what's the difference between a full thermal imaging camera (e.g. an FLIR) and a standard infrared CCD chip? ...
Polynomial's user avatar
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1 vote
1 answer
563 views

Help me to drive the CCD ICX282AQ

This is the first time I am working with an image sensor. I have the datasheet of the ICX282AQ. But I don't understand much. What I would like to do is: Can I drive this sensor with an Arduino board ...
Wuthian's user avatar
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