Three key factors for purchasing camera modules
Before forming a terminal monitoring camera product, you need to customize the camera module from the camera module manufacturer. The module manufacturer will definitely ask you about the customization parameters of your product. Tips from Xiaojin Youqing: When purchasing purchasing camera modules , you need to select the camera module products with appropriate resolution, focus, angle and depth of field from the camera module manufacturer according to the actual use scenario.
一、How to focus the camera module
1. Open short circuit and electrical test to detect the electrical conductivity of the camera module.
- The black field test hood moves downward and the cover is arranged on the camera module to form a black field environment; One image recognition and height measurement, identify the position of the camera, and measure the distance between the lens and the detection surface of the laser rangefinder.
- The focusing instrument is inserted into the camera module and drives the camera module to rotate relative to the sonic vibration motor to adjust the distance between the camera and the chart; Secondary image recognition and height measurement, identify the position of the camera, and measure the distance between the lens and the detection surface of the laser rangefinder.
- White field test The white field light source is horizontally close to and irradiates the camera module to form a white field environment.
- The dispensing head can be placed close to or inserted into the gap between the camera module and the sound vibration motor for dispensing.
- The curing curing light source illuminates the glue dispensing position on the camera module for curing.
- Activation step The activation component controls the opening and closing of the camera module. The camera module can take pictures at least once to obtain photo information.
二、What are the purchasing camera modules parameters
1. Focal length refers to the distance from the optical center of the lens to the focus of light concentration when parallel light is incident. The focal length of the camera determines the size of the image, the angle of view, the depth of field and the perspective of the picture.
- The angle of view is formed by taking the camera as the vertex, and the object image of the measured object can pass through the two edges of the maximum range of the camera.
- Depth of field refers to the front and back distance range of the subject measured when the camera module can obtain a clear image.
三、How about the effect of different focal lengths
1. The smaller the focal length is, the closer the visual distance is, and the larger the field angle is.
- The larger the focal length is, the farther the visual distance is, and the smaller the angle of view is.
In addition, it is necessary to provide the product’s later functional features, such as voice, night vision, backlight, living, single and double eyes and other specific details.
The above contents can help you avoid detours when customizing the camera module and improve the efficiency of your communication with the camera module manufacturer.
Shenzhen Jinshikang Technology is an Internet production enterprise specializing in the research, development and design of purchasing camera modules . We have invested a lot in the development and research of face recognition technology and many other fields. Obecnie, we have reached long-term cooperation with dozens of camera manufacturers, with a perfect standard business consultation process, which allows you to smooth the whole process from consultation to cooperation, and ensure product quality and after-sales clearance. Welcome camera manufacturers and enterprise friends who need purchasing camera modules to consult, exchange and cooperate.