GPM462C

2.1 Camera Specifications

2.2 Sony IMX462 Sensitivity

The sensor G Sensitivity of GPM462C is 2376mv with 1/30s. Its spectral sensitivity is shown in Figure 1. The sensitivity is measured with a testing standard lens with CM500S (t = 1.0mm) as an IR-cut filter and image at F5.6.

2.3 12bit ADC and ROI

The GPM462C has built in 12bit ADC. It also has 12bit output mode for hardware binning and smaller resolution. The camera also supports hardware ROI, and the smaller the ROI size is, the higher the frame rate is.

Table 2 shows the frame rate of the GPM462C in 12/8bit mode, USB2.0 data transfer interface at different resolutions:

2.4 Frame Buffer

GPM462C camera has a built-in frame buffer, which helps maintain the stability of data transmission, and effectively reduce the amp-glow caused because image data can be temporarily buffered without being sent hastily to the receiver. Ensure that each camera can still achieve its maximum frame rate when multiple cameras are operating simultaneously.

2.5 Binning

The GPM462C supports digital binning from 1x1 to 8x8 in either stacking or averaging method.

2.6 Conversion Gain Switch

GPM462C support HCG 、LCG mode switch.

2.7 Power and Cooling System for Precise Temperature Regulation

The camera operates via a USB 2.0 interface. Upon establishing a connection with the host system using the USB 2.0 cable, the device is primed for operation.

2.8 Camera Performance Analysis

Camera performance can be evaluated with e-/ADU, Read Noise, Full Well and Dynamic Range.

e-/ADU: The sensors found in cameras used for vision applications have pixels that convert incoming photons into electrons. Gain on a CCD /CMOS camera represents the conversion factor from electrons (e-) into digital counts, or Analog-Digital Units (ADUs). Gain is expressed as the number of electrons that get converted into a digital number, or electrons per ADU (e-/ADU).

Read Noise: Read Noise is the most important reference to measure the performance of a camera. Lower read noise usually means better SNR and better quality of image. Read Noise is created within the camera electronics during the readout process as the electrons are subjected to the analog to digital conversion, amplification and processing steps that enable an image to be produced.

Full Well: The electrons are held in each pixel and are converted into electrical charge which can be measured to show the amount of light that has fallen on each pixel. The maximum electrical charge possible is termed "full well capacity". Under the same conditions such as noise and A/D converter quality, the greater full well capacity a sensor has, the wider dynamic range the sensor has. As there is a limit to the depth to which pixels can be made, the full well capacity is often proportional to the frontal area of the light gathering element of the pixel.

Dynamic Range is the ratio between the maximum output signal level and the noise floor at minimum signal amplification (noise floor which is the RMS (root mean square) noise level in a black image). The noise floor of the camera contains sensor readout noise, camera processing noise and the dark current shot noise. Dynamic range represents the camera’s ability to display/reproduce the brightest and darkest portions of the image and how many variations in between. This is technically intra-scene dynamic range. Within one image there may be a portion that is in complete black and a portion that is completely saturated.

For the GPM series camera, the Gain Value is in xxx% mode. Here xxx is used as the x axis (Gain Value) for the description of the camera performance

Read noise is the most important reference to measure the performance of a camera. Lower read noise usually means better SNR and better quality of image.

Camera setting used for performance analysis is shown below:

• Full resolution
• RAW 12-bit mode
• LCG

Figure 2 shows the curves of the camera analysis data in Table 3

The camera analysis data is shown in Table 3:

Camera setting used for performance analysis is shown below:

• Full resolution
• RAW 12-bit mode
• HCG

Figure 3 shows the curves of the camera analysis data in Table 4

The camera analysis data is shown in Table 4:

3.1 Packing List

3.2 Camera Dimension and Its Mount

The GPM series body, made from tough, alloy, ensures a heavy duty, workhorse solution. The camera is designed with a high-quality IR-CUT or AR to protect the camera sensor and block the IR elimination the reflection light. No moving parts included. These measures ensure a rugged, robust solution with an increased lifespan when compared to other industrial camera solutions.

3.3 Camera Outline and Interface