Image Sensors for Near Infrared Region

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Image Sensors for Near Infrared Region

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Image Sensors for Near Infrared Region

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InGaAs image sensors are designed for a wide range of applications in the near infrared region. Built-in CMOS ROIC readout circuit allows easy signal processing. These image sensors use a charge amplifier mode that provides a large output signal by integrating the charge, making them ideal for low -light-level detection.

Equivalent circuit (InGaAs linear image sensor)

Spectral response

G9201 to G9208 series, etc.		G12230-512WB

InGaAs linear image sensors for spectrometry

Type no.	Cooling	Pixel height (μm)	Pixel pitch (μm)	Number of pixels	Line rate (lines/s)	Spectral responese range λ (μm)	Defective pixel
G9203-256D	Non-cooled	500	50	256	1910	0.9 to 1.7	0
G9204-512D			25	512	960	0.9 to 1.7	0
G11608-256DA			50	256	17200	0.5 to 1.7	1% max.
G11608-512DA			25	512	9150	0.5 to 1.7	1% max.
G9211-256S	One-stage TE- cooled (Td=-10 °C)	250	50	256	1910	0.9 to 1.67	1% max.
G9212-512S		250	25	512	960
G9213-256S		500	50	256	1910
G9214-512S		500	25	512	960
G9201-256S		250	50	256	1910		0
G9202-512S		250	25	512	960
G9203-256S		500	50	256	1910
G9204-512S		500	25	512	960
G9205-256W	Two-stage TE- cooled (Td=-20 °C)	250	50	256	1910	0.9 to 1.85	5% max.
G9206-256W						0.9 to 2.05
G9206-02						0.9 to 2.15
G9207-256W						0.9 to 2.25
G9208-256W						0.9 to 2.55
G9205-512W			25	512	960	0.9 to 1.85
G9206-512W						0.9 to 2.15
G9208-512W						0.9 to 2.55

High-speed type InGaAs linear image sensors

These are linear image sensors with high-speed data rate designed for industrial measuring instruments.

Type no.	Cooling	Pixel height (μm)	Pixel pitch (μm)	Number of pixels	Line rate (lines/s)	Spectral responese range λ (μm)	Defective pixel	Photo
G9494-256D	Non-cooled	50	50	256	7100	0.9 to 1.7	1% max.
G9494-512D	Non-cooled	25	25	512	3720	0.9 to 1.7	1% max.

The G10768 series is a high-speed infrared image sensor with 1024 pixels designed for applications such as foreign object screening and medical diagnostic equipment where a multichannel high-speed line rate is required.

Type no.	Cooling	Pixel height (μm)	Pixel pitch (μm)	Number of pixels	Line rate (lines/s)	Spectral responese range λ (μm)	Defective pixel	Photo
G10768-1024D	Non-cooled	100	25	1024	39000	0.9 to 1.7	1% max.
G10768-1024DB	Non-cooled	25	25	1024	39000	0.9 to 1.7	1% max.

Back-illuminated type InGaAs linear image sensors

The back-illuminated InGaAs photodiode and CMOS-ROIC are bump bonded to provide a single output terminal.

Type no.	Cooling	Pixel height (μm)	Pixel pitch (μm)	Number of pixels	Line rate (lines/s)	Spectral responese range λ (μm)	Defective pixel
G11135-256DD	Non-cooled	50	50	256	14000	0.95 to 1.7	1% max.
G11135-512DE		25	25	512	8150
G11620-128DA		500	50	128	30800
G11620-256DA			50	256	17200
G11620-256DF			25	256	17200
G11620-512DA			25	512	9150
G11620-256SA	One-stage TE-cooled (Td=-10 °C)	500	50	256	17200	0.95 to 1.67
G11620-512SA	One-stage TE-cooled (Td=-10 °C)	500	25	512	9150	0.95 to 1.67
G12230-512WB	Two-stage TE-cooled (Td=-20 °C)	250	25	254 + 254	9150	0.95 to 2.15	2% max.

InGaAs area image sensor

The InGaAs area image sensors have a hybrid structure consisting of a CMOS readout circuit (ROIC: readout integrated circuit) and back-illuminated InGaAs photodiodes.

Type no.	Cooling	Pixel height (μm)	Pixel pitch (μm)	Number of pixels	Line rate (lines/s)	Spectral responese range λ (μm)	Defective pixel
G11097-0606S	One-stage TE-cooled (Td=25 °C)	50	50	64 × 64	1025	0.95 to 1.7	1% max.
G11097-0707S	One-stage TE-cooled (Td=25 °C)			128 × 128	279	0.95 to 1.7
G12460-0606S	One-stage TE-cooled (Td=0 °C)			64 × 64	1025	1.12 to 1.9
G12242-0707W	Two-stage TE-cooled (Td=15 °C)	20	20	128 × 128	258	0.95 to 1.7	1% max.
G13393-0808W				320 × 256	228		0.37% max.
G13393-0909W				640 × 512	62		0.37% max.
G13441-01	Two-stage TE-cooled (Td=-20 °C)	50	50	192 × 96	867	1.3 to 2.15	1% max.

Block diagram (G11097-0606S/-0707S, G12460-0606S)

A sequence of operation of the readout circuit is described below.

In the readout circuit, the charge amplifier output voltage is sampled and held simultaneously at all pixels during the integration time determined by the low period of the master start pulse (MSP) which is as a frame scan signal. Then the pixels are scanned and their video signals are output.

Pixel scanning starts from the starting point at the upper left in the right figure. The vertical shift register scans from top to bottom in the right figure while sequentially selecting each row.

For each pixel on the selected row, the following operations are performed:

① Transfers the sampled and held optical signal information to the signal processing circuit as a signal voltage.

② Resets the amplifier in each pixel after having transferred the signal voltage and transfers the reset voltage to the signal processing circuit.

③ The signal processing circuit samples and holds the signal voltage ① and reset voltage ②.

④ The horizontal shift register scans from left to right in the right figure, and the voltage difference between ① and ② is calculated in the offset compensation circuit. This eliminates the amplifier offset voltage in each pixel.

The voltage difference between ① and ② is output as the output signal in the form of serial data.

The vertical shift register then selects the next row and repeats the operations from ① to ④. After the vertical shift register advances to the 64th row (G11097-0606S, G12460-0606S) or 128th (S11097-0707S), the MSP, which is a frame scan signal, goes low. After that, when the MSP goes high and then low, the reset switches for all pixels are simultaneously released and the next frame integration begins.

產品介紹 Products Information

Image Sensors for Near Infrared Region

G9201 to G9208 series, etc.

G12230-512WB

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