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Norsk språk1. Definition and Classification of Microscopic Cameras
Microscope Camera is an optical instrument specifically designed to be combined with a microscope to capture microscopic images. It is an input device developed specifically for microscopes, which connects to the microscope's trinocular tube via an adapter, converts optical images into electrical signals through an image sensor (CCD or CMOS), and then transmits them to a computer for processing and display. Some customers need to use the camera on a binocular tube, in which case we can use an electronic eyepiece adapter to meet this requirement:
Simply put, a microscope camera is a key device that "digitizes" the microscopic world under a traditional optical microscope, allowing observers to view, save, and analyze microscopic images in real time on a computer screen.
2. Working Principle
(1) Optical Imaging Phase
When the observed specimen is placed slightly outside the focus of the objective lens, an enlarged inverted real image will be formed inside the focus of the eyepiece and close to the focus. The microscope camera collects and focuses the light on the sample through the optical system to form an enlarged real image
(Image acquisition principle of CCD camera)
(2) Photoelectric conversion stage
The core of a microscope camera lies in its image sensor, which is responsible for converting the optical signals from the microscope into electrical signals. The task of the imaging sensor is to convert optical signals into electrical signals, and the principle of this imaging sensor is based on the so - called photovoltaic effect, which describes how photons interact with materials to release electrons, thereby resulting in the generation of charge
(3) Digital Processing Stage
The working principle of a camera is roughly as follows: The optical image generated by the scene through the lens (LENS) is projected onto the surface of the image sensor, then converted into an electrical signal, transformed into a digital image signal after A/D (analog-to-digital conversion), and then sent to the Digital Signal Processing (DSP) chip for processing. Each pixel on the sensor can capture a portion of the light and convert it into a voltage or current signal.
(4) Transmission and Display
The processed digital signal is transmitted via USB , HDMI , WAN and other interfaces, as well as WIFI to the computer, presenting clear microscopic images on the display, and allowing for saving, measurement, and analysis.
3. Main Types of Microscope Cameras
Microscope cameras can be mainly classified into the following categories according to the type of image sensor used
(1) CCD Camera (Charge-Coupled Device)
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Features: High sensitivity, low noise, and wide dynamic range
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Applicable scenarios: scientific research-grade imaging, low-light fluorescence observation
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Advantages: Excellent image quality, suitable for high-precision scientific research applications
(2) CMOS Camera (Complementary Metal Oxide Semiconductor)
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Features: low cost, low power consumption, and fast read speed
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Applicable scenarios: routine observation, teaching, industrial inspection
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Advantages: High cost-effectiveness, has become the mainstream in the market
(3) sCMOS Camera (Scientific Complementary Metal-Oxide-Semiconductor)
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Features: Combines the high sensitivity of CCD and the high speed advantage of CMOS
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Applicable scenarios: high-end scientific research, high-speed imaging
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Advantages: Excellent performance, suitable for cutting-edge scientific research
(4) EM-CCD Camera (Electron Multiplying CCD)
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Features: Ultra-high sensitivity, capable of detecting single photons
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Applicable scenarios: ultra-weak light fluorescence, single molecule imaging
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Advantage: The best choice in extreme low light conditions
4. Key Parameters for Model Selection
When selecting a microscope camera, the following key technical specifications need to be considered
(1) Resolution
determines the image detail capture ability. High resolution is suitable for observing fine structures, and our company's existing cameras can meet the requirements from 2M to 26MegaPixel
(2) Sensitivity
Key indicators for low-light imaging,fluorescence observationrequires selecting a high-sensitivity camera
(3) Noise level
Affects image purity, and low noise can result in a clearer image
(4) Dynamic Range
Ability to distinguish different levels of illumination, wide dynamic range to adapt to complex lighting conditions
(5) Frame Rate
High-speed imaging requirements (such as observing cell movement) require the selection of high frame rate cameras
(6) Interface Type
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USB Interface: Plug and Play, fast transfer speed, currently the mainstream in the market
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HDMI Interface: Plug and Play, no computer required, high-definition picture quality and low latency, local storage and convenient operation
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WAN Interface: Remote access and networking teaching, network storage and data management. The network interface, in conjunction with the Wi-Fi module, enables multi-terminal access for smartphones, tablets, computers, etc.
(7) Note:
In addition to the above points, when selecting a microscope camera, the chip size must also correspond to the C Mount of the carrying magnification; otherwise, the image output on the electronic screen will be significantly different from the image seen through the eyepiece, and the output image may even be too large. The following is the corresponding relationship:
5. Recommended Star Products
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A59.4971 is a highly cost-effective camera among our company's existing products, integrating advanced features such as WIFI + 4K HDMI + USB + LAN full interfaces, autofocus, depth of field fusion, etc., and can perform continuous fluorescence photography without the need for cooling.
Huang Xin