Sony FCB camera block
Under the shadowless lamp in the operating room, the surgical video camera was supposed to clearly capture every vascular texture and every tissue layer. However, the light spots formed by strong light reflection cause local overexposure and distortion in the picture, and even mask key anatomical structures – this not only affects the effect of remote consultation and teaching, but may also interfere with doctors’ judgment of subtle lesions.
I. Overexposure of Light Spots: The “Fatal Flaw” of Surgical Demonstrations
The root cause of light spots
The strong light from the shadowless lamp directly shines on the surface of tissues or instruments. The reflected light enters the lens of the surgical video camera and exceeds the dynamic range of the sensor, forming a white light spot that covers the real image. Especially when the lens zooms in and out, the light spot spreads, causing the loss of details in the core technique field.
2. The failure of traditional solutions
Ordinary surgical video cameras only compensate for the light spot by reducing the global exposure, but this results in the dark areas of the surgical field (such as deep cavities) being completely black – the “bright-preserving area” and the “dark-preserving area” become an irreconcilable contradiction.
For the field of digital operating rooms, the problem of overexposure of light spots not only has far-reaching impacts but also persists stubbornly for a long time, becoming one of the key factors restricting the performance improvement and clinical application effect optimization of digital operating rooms. Against this backdrop, it is particularly urgent and necessary to explore a method that can fundamentally, thoroughly and effectively solve the problem of overexposure of light spots.
Ii. Substantive Solution: Three-dimensional Collaboration to Overcome Light Spots
1. Hardware innovation: Curb overexposure from the source
(1) SONY integrated movement is selected
The surgical video cameras that adopt SONY integrated cores (such as FCB-ER8530/FCB-EV9520L) are equipped with the latest generation of SONY CMOS sensors. Through multi-frame synthesis technology, they cover high dynamic range and wide dynamic range, simultaneously preserving the details of the bright areas of the shadowless lamp and the dark parts of the tissue, effectively reducing the area of the light spot.
(2) Nano-scale anti-reflective coating lens
The surgical video cameras that adopt SONY’s integrated core are equipped with medical-grade high-magnification optical zoom lenses (SONY FCB-EV9520L optical zoom 30x) coated with a multi-layer film with very low reflectivity, blocking the path of stray light and physically suppressing the generation of glare.
2. Algorithm Empowerment: Dynamic matching of surgical environments
(1) Customized spectral algorithm for shadowless lamp
The surgical video camera equipped with SONY’s integrated core can analyze the spectral characteristics (color temperature) of different brands of shadowless lamps, dynamically adjust the gamma curve and white balance, and specifically eliminate the reflected light spots of specific bands, allowing the surgical field to bid farewell to “distortion” – whether it is the sharp penetration of cold white light or the soft rendering of warm yellow light, SONY’s integrated core can highly restore the true colors.
(2) Automatic strong light suppression function
To address the issue of strong light reflection from the shadowless lamp, the surgical video camera with SONY’s integrated core is equipped with an automatic strong light suppression function. By real-time analysis of the brightness distribution of the image, precise algorithms can accurately locate overexposed areas (such as the reflection points of equipment) and dynamically adjust local exposure parameters to reduce the brightness of the light spot.
3. System Collaboration: Breaking down device silos
(1) Special control software for shadowless lamps
In response to the long-standing core visual challenge in digital operating rooms – the problem of overexposure of light spots and loss of key tissue details in the surgical field images under the illumination of shadowless lamps – Xuanzhan Technology, relying on 16 years of experience in secondary development of high-definition videos, has innovatively developed a dedicated control software for shadowless lamps and obtained a software copyright patent.
This breakthrough technology not only overexposes the light spot, a stubborn bottleneck in digital operating rooms, but also provides core support for surgical demonstrations and remote consultations with its clinical-grade image true color reproduction capability.
(2) Laser-assisted positioning
The surgical video camera independently developed by Xuanzhan Technology is equipped with a laser-assisted positioning system, which can guide the camera to precisely aim at the core area of the surgical field and avoid the direct reflection Angle of the lens.
Iii. Practical Verification: Implementation of Digital Operating Room Scenarios
Case: In a minimally invasive gynecological surgery at a provincial hospital, the misdiagnosis rate of cervical microvascular imaging was relatively high due to light spot interference. After being connected to the Xuanzhan Surgical video camera (paired with SONY’s high-definition core module FCB-EV9520L), the diagnostic accuracy has been effectively improved.
Summary
Overexposure of light spots is not a “technical limitation”, but an engineering problem that can be systematically solved. As an officially authorized dealer of SONY (China), Xuanzhan Technology, based on the practical experience of SONY’s FCB series zoom camera block and secondary development, not only solved the problem of overexposure of the light spot of the operating surgical camera under the shadowless lamp, but also laid a foundation for the intelligent upgrade of the operating room.