ORCA-Quest

世界第一台qCMOS camera,Quantitative CMOS, 使用最新技術收集光電子數

Effective no. of pixels4096 (H) ×2304 (V)
Readout speed
120 frames/s
Readout noise
0.27 electrons
Dynamic range
25 900:1


  Four key features that enable the ORCA-Quest to achieve ultimate quantitative imaging:

1. Extreme low-noise performance

2. Realization of photon number resolving (PNR) output

3. Back-illuminated structure and high resolution

4. Realization of a large number of pixels and high speed readout

 

1. Extreme low-noise performance


In order to detect weak light with high signal-to-noise, ORCA-Quest has been designed and optimized to every aspect of the sensor from its structure to its electronics. Not only the camera development but also the custom sensor development has been done with latest CMOS technology, an extremely low noise performance of 0.27 electrons has been achieved.

 

2. Realization of photon number resolving (PNR) output


Light is a collection of many photons. Photons are converted into electrons on the sensor, and these electrons are called photoelectrons. “Photon number resolving*” is a method of accurately measuring light by counting photoelectrons. In order to count these photoelectrons, camera noise must be sufficiently smaller than the amount of photoelectron signal. Conventional sCMOS cameras achieve a small readout noise, but still larger than photoelectron signal, making it difficult to count photoelectrons. Using advanced camera technology, the ORCA-Quest counts photoelectrons and delivers an ultra-low readout noise of 0.27 electrons rms (@Ultra quiet scan), stability over temperature and time, individual calibration and real-time correction of each pixel value.

* Photon number resolving is unique and quite different from photon counting (More precisely the method resolves the number of photoelectrons. However, since single photon counting instead of single photoelectron counting has been used for a comparable method in this field, we will use the term “photon number resolving”).

 

3. Back-illuminated structure and high resolution


High QE is essential for high efficiency of detecting photons and achieved by back-illuminated structure. In conventional back-illuminated sensors, crosstalks occur between pixels due to no pixel separation, and resolutions are usually inferior to those of front-illuminated sensors. The ORCA-Quest qCMOS®'s sensor has back-illuminated structure for achieving high quantum efficiency, and trench structure in one-by-one pixel for reducing crosstalk.

 

4. Realization of a large number of pixels and high speed readout


Photon counting (PC) level images have typically been acquired using electron multiplication camera such as EM-CCD camera with about 0.3 megapixels. However, ORCA-Quest can acquire not only PC level images but also photon number resolving images with 9.4 megapixels. In addition, it is not fair to compare readout speeds of cameras with different pixel number by frame rate. In such a case the pixel rate (number of pixels × frame rate), which is the number of pixels read out per second, is used. Until now, the fastest camera capable of SPC readout was the EM-CCD camera with about 27 megapixel/s, but the ORCA-Quest enables photon number resolving imaging at about 47 megapixel/s, nearly twice as fast.

 

Specifications

 

*1: Calculated from the ratio of the full well capacity and the readout noise in ultra quiet scan
*2: At Area readout, Photon number resolving
*3: At Lightsheet readout (Software such as HCImage is required. For details, please contact your local Hamamatsu representative or distributor.)

Dimensions

c15550-20UP dimensional outline

說明 檔案大小 下載
ORCA-Quest qCMOS Catalog 123KB
ORCA-Quest qCMOS Concept brochure 123KB
型號 概述 詢價數量