医用LED双联观片灯——>10000°K高色温LCD背光·亮度均匀性≥90%·智能分联感应·超薄2.5cm·定时关机法医病理阅片与刑事技术影像检验专业光源系统（法医检验鉴定/刑事技术骨骼损伤分析/医学影像判读核心辅助装备）

 

医用LED双联观片灯——>10000°K高色温LCD背光·亮度均匀性≥90%·智能分联感应·超薄2.5cm·定时关机法医病理阅片与刑事技术影像检验专业光源系统（法医检验鉴定/刑事技术骨骼损伤分析/医学影像判读核心辅助装备）

〖重要合规前置声明〗 本产品为法医病理检验与刑事技术影像分析专用辅助装备，仅面向具备法定鉴定资质与刑事技术检验许可的各级公安机关法医部门、刑事技术部门、人民检察院技术部门、司法鉴定机构、公安及医学院校及授权刑事技术实验室定向供应，严禁向任何个人、无资质企业及非授权单位销售或提供。本设备的购置、使用与管理，必须严格遵守《中华人民共和国刑事诉讼法》《司法鉴定程序通则》《法医病理学尸体检验规范》及国家关于法医检验、医学影像判读的相关法律法规与行业技术标准，必须由经过专业培训、取得相应法医检验或刑事技术岗位资质的人员规范操作，严禁无资质单位和个人违规获取、使用本设备，严禁在设备通电状态下进行灯泡更换或维修操作，严禁将本设备用于法定法医检验与刑事技术工作之外的任何用途。

产品概述

医用LED双联观片灯——>10000°K高色温LCD背光·亮度均匀性≥90%·智能分联感应·超薄2.5cm·定时关机法医病理阅片与刑事技术影像检验专业光源系统（亦称医用LED双联观片灯、LED双联观片灯）是一款专为法医病理诊断、刑事技术检验及医学影像分析设计的高标准专业阅片装备，属于法医检验鉴定、刑事技术骨骼损伤分析及医学影像判读领域的核心辅助光源设备。该产品专为法医病理学检验中对X光片、CT片等医学影像胶片进行高精度判读深度定制，完美适配法医病理尸体解剖中骨骼损伤的分析与骨折类型判定、体内弹头或异物定位、交通事故及工伤案件中伤者医学影像的技术审查与取证、以及公安医学院校法医学影像教学等多种专业场景。系统采用高品质LCD背光光源，色温超过10000°K，通过精密的光学设计确保整个观察屏面（可视尺寸751mm×422mm）的亮度均匀性≥90%，表面亮度800-1500 cd/㎡范围内连续可调。配合智能分联感应、可调定时关机及超薄2.5cm结构，从根本上解决了传统观片灯色温偏低导致影像细节辨识困难、屏面亮度不均影响胶片整体判读、以及长时间阅片光源频闪造成视觉疲劳等实战痛点，能够为法医鉴定人与刑事技术人员提供“专业高色温均匀照明、智能感应节能便捷、超薄长寿视觉舒适”的标准化阅片光环境，是确保法医骨骼损伤分析、异物检验及病理诊断准确性的关键辅助装备。

技术原理

该设备基于LCD背光照明与精密光学匀化技术原理工作。核心光源采用8灯管LCD背光系统，背光源发射的光线经精密设计的光学导光板与扩散膜层，在观察屏面形成亮度高度均匀的出射面光源。系统色温校准至≥10000°K，属于高色温冷白光区段，能够有效穿透医学影像胶片的灰雾层，使骨骼细微纹理、骨折线形态、软组织层次及异物轮廓等关键诊断信息以高对比度清晰呈现。整个观察屏可视尺寸751mm×422mm，通过精密的光学设计与多灯管阵列排布，确保全屏面亮度差≤10%，彻底消除传统观片灯因灯管间隙导致的局部暗区，满足法医鉴定人对整张X光片或CT片进行无视觉偏差均匀判读的专业需求。表面亮度在800-1500 cd/㎡范围内通过旋钮连续可调，操作者可根据胶片密度与诊断需求灵活调节。

在智能控制层面，设备配备3个光电传感器实现智能分联控制。当在左侧或右侧观片区域插入医学影像胶片时，对应侧的灯箱自动点亮，另一侧保持熄灭；胶片取下后，灯箱自动熄灭。该智能感应机制避免了传统观片灯需手动开关或持续全屏点亮造成的能源浪费与操作不便。内置可调定时关机功能，默认在持续开启2小时后自动关机，用户也可根据实际工作需要将关机时间预设为4小时或8小时，有效避免因遗忘关闭导致的电力消耗与光源寿命折损。光源采用高频驱动技术，闪烁频率极高，有效避免低频闪烁对视网膜的刺激，即使法医鉴定人进行长时间、高强度的连续阅片工作，也能量大程度保护视力。

在物理结构层面，整机采用超薄设计，厚度仅2.5厘米，外形尺寸918mm×495mm×25mm，重量约9公斤，节省实验室及解剖室操作空间。观察屏采用高强度亚克力板材，透光性优异且长期使用不变形、不变色，配合滚针自锁夹片装置取代传统弹片设计，使医学校的胶片夹持更加牢固顺滑，取放快捷且不易损伤珍贵胶片。整机适配交流220V、50/60Hz市电，功耗仅48W，光源使用寿命极长、发热量小，完全满足法医实验室常年不间断工作的高耐久性需求。

核心功能与合规实战价值

≥10000°K专业高色温与≥90%亮度均匀性，提供符合医学影像诊断标准的标准化阅片光环境
设备色温校准至≥10000°K，属于专业医用观片灯标准色温区间，高色温冷白光能够有效穿透医学影像胶片的灰雾层与高密度区域，使骨骼细微纹理、微小骨折缝隙、软组织层次及金属异物轮廓等关键诊断信息以高对比度清晰呈现。通过精密光学设计，全屏面亮度差≤10%，彻底消除了因灯管间隙导致的边缘暗区与局部亮斑。表面亮度在800-1500 cd/㎡范围内连续可调，操作者可根据不同胶片密度（如穿透胸部的X光片、软组织CT片）灵活选择最佳亮度。该标准化阅片光环境使同一胶片在不同时间、不同操作者阅片条件下均能获得一致的视觉判读条件，满足法医影像检验对光源条件可重复性与一致性规范要求，为法医病理损伤鉴定意见的客观性提供了从光源端到诊断端的双重保障。

智能分联感应与可调定时关机，提升阅片操作效率并降低能源与设备维护成本
设备配备3个光电传感器实现智能分联控制——插入胶片侧灯箱自动点亮，另一侧保持熄灭；胶片取下后自动熄灭。该设计特别适应法医病理检验中需要对多张胶片进行逐张判读比对的工作模式，操作者无需频繁手动开关电源或切换亮度，大幅简化阅片流程。内置可调定时关机功能默认2小时自动关闭，支持延长至4或8小时，有效避免因高强度检验工作后遗忘关机导致电力浪费、光源衰减加速及潜在的消防安全隐患，从人机交互层面全面支持了法医实验室规范化管理与职业健康安全的双重要求。

超薄2.5cm结构与滚针自锁夹片装置，优化实验室空间利用并保护珍贵胶片
整机厚度仅2.5厘米，外形紧凑，可壁挂或台式安装，在法医解剖室、实验室或阅片室有限的操作台空间中灵活布置。观察屏采用高强度亚克力板材，长期使用不变形、不变色，透光性保持稳定。滚针自锁夹片装置取代传统弹片设计，夹持胶片更为牢固且顺滑，取放快捷不易损伤胶片表面，鉴于刑事案件中的X光片、CT片常为唯一原始医学物证且不可替代，该无损夹持设计完整体现了物证检验“无损优先、保全原貌”的法定原则。光源高频闪烁驱动与低发热特性保障了法医鉴定人在长时间高强度阅片工作中的视觉舒适度与职业健康保护。

合规应用场景

法医病理学尸体检验中的骨骼损伤与异物影像分析场景
在法医病理尸体解剖中，法医鉴定人使用本观片灯对尸体拍摄的X光片进行高精度判读，分析骨骼损伤类型、骨折线走向、粉碎性骨折碎片分布、关节脱位程度以及体内弹头、金属异物或钙化病灶的精确位置。高色温均匀照明确保整张胶片的各部分影像细节以一致灰阶清晰呈现，为死亡原因判定、损伤方式推断及致伤工具分析提供客观的影像学依据。阅片过程与结果判断完全符合《法医病理学尸体检验规范》对影像学资料分析技术条件的标准要求。

刑事技术人身伤害鉴定中的医学影像技术审查场景
在涉及人身伤害、交通事故、工伤等案件的刑事技术鉴定中，鉴定人使用本观片灯对被鉴定人的X光片、CT片等进行技术审查，评估骨折损伤与涉案事件的因果关系、损伤程度是否符合法定轻伤或重伤标准。均匀高色温光源确保胶片上微小陈旧骨折痕迹、软组织钙化等关键细节不被视觉遗漏，为鉴定意见书的客观性与准确性提供符合规范标准的光源条件保障。

公安及医学院校法医影像教学与培训场景
在公安刑警学院、医学院法医学系的教学实验室，本观片灯作为标准胶片阅片教具，用于法医学影像诊断课程中的X光片判读教学。双联设计支持教师与学员同时阅片比对，智能分联感应功能方便教学中逐片展示与讲解，是培养法医学专业人才标准化阅片技能的基础教学装备。

核心技术参数

光学性能方面，设备采用LCD背光光源，配置8灯管，色温≥10000°K，观察屏可视尺寸751mm×422mm，全屏面亮度差≤10%，表面亮度800-1500 cd/㎡支持旋钮连续调光。智能控制方面，配备3个光电传感器实现智能分联控制，插入胶片侧自动点亮、取下自动熄灭。内置可调定时关机功能，默认2小时，可预设为4或8小时。物理规格方面，整机外形尺寸918mm×495mm×25mm，厚度仅2.5厘米，重量约9公斤。观察屏采用高强度亚克力板材，夹片装置采用滚针自锁设计。电气规格方面，电源AC 220V、50/60Hz，功耗48W。光源具有长寿命、高频闪、低发热特性。标准配置包含医用LED双联观片灯主机一台、专用电源线一根及产品使用说明书一份。

合规实战应用案例

某市公安法医鉴定中心在日常法医病理尸体检验工作中，将本医用LED双联观片灯部署于法医解剖室作为主力阅片设备。在一次涉及高坠死亡的命案检验中，法医鉴定人将死者全身多部位X光片逐张插入观片灯进行系统判读。在≥10000°K高色温均匀光照下，鉴定人清晰辨识出双侧跟骨粉碎性骨折、腰椎压缩性骨折及桡骨远端骨折的骨折线形态与移位程度，同时发现左小腿软组织内一枚微小金属异物——后经提取检验确认为高坠过程中嵌入的窗框金属碎片。上述影像学发现为判断高坠着地部位、坠落高度及损伤形成机制提供了客观的影像学技术支持。整个阅片过程的光源条件一致性保障了每一张X光片的判读标准统一，阅片记录与影像分析作为法医鉴定意见书的技术附件完整归档。

某司法鉴定中心在受理一起交通事故人身伤害重新鉴定案件时，鉴定人需对被鉴定人的颈椎、胸椎及右下肢X光片进行技术审查，评估原鉴定中认定的骨折损伤程度与事故关联性。鉴定人使用本观片灯在800-1500 cd/㎡可调亮度范围内根据胶片密度逐张调节最佳阅片亮度，在均匀高色温光源下对原鉴定中标注的骨折线位置进行逐一复核。鉴定人发现一处被原鉴定认定为“陈旧性压缩骨折”的椎体影像在800 cd/㎡亮度下观察时确实呈现陈旧性特征，但将亮度调至1500 cd/㎡后，该区域周围新显现出模糊的新鲜骨小梁排列紊乱，提示可能同时存在新的损伤。该发现在后续CT三维重建中得到了确认，鉴定人据此对原鉴定结论进行了修正。本案中观片灯的可调亮度功能为鉴定人准确区分新旧混合损伤提供了关键的光学支持，鉴定结论在法庭质证中被采信。

厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班 C9 独栋
电话：010-56526048

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Medical LED Double-Panel Film Viewer — >10000°K High Color Temperature LCD Backlight · ≥90% Brightness Uniformity · Intelligent Split-Panel Induction · Ultra-Slim 2.5cm · Timer Shutdown Forensic Pathology Film Reading & Criminal Technical Imaging Examination Professional Illumination System (Forensic Examination & Identification / Criminal Technical Bone Injury Analysis / Medical Imaging Interpretation Core Auxiliary Equipment)

Global site URL：https://xilankeji.en.alibaba.com

〖Important Compliance Precaution〗 This product is a specialized auxiliary equipment for forensic pathological examination and criminal technical imaging analysis, which is solely supplied to authorized entities such as forensic medicine departments and criminal technical departments of public security organs, technical departments of people's procuratorates, forensic identification institutions, public security and medical academies, and authorized criminal technical laboratories with statutory identification qualifications and criminal technical examination permits. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, use and management of this equipment must strictly comply with the Criminal Procedure Law of the People's Republic of China, the General Rules for Judicial Authentication Procedures, the Standards for Forensic Pathological Autopsy, and national laws, regulations and industrial technical standards regarding forensic examination and medical imaging interpretation. Operation must be carried out exclusively by professionally trained personnel holding corresponding forensic examination or criminal technical post qualifications. Unauthorized units and individuals are strictly forbidden from acquiring or using this equipment. Replacing bulbs or performing maintenance operations while the equipment is energized is strictly prohibited. Any use of this equipment for purposes other than statutory forensic examination and criminal technical work is strictly prohibited.

Product Overview

The Medical LED Double-Panel Film Viewer — >10000°K High Color Temperature LCD Backlight, ≥90% Brightness Uniformity, Intelligent Split-Panel Induction, Ultra-Slim 2.5cm, Timer Shutdown Forensic Pathology Film Reading & Criminal Technical Imaging Examination Professional Illumination System (also referred to as the Medical LED Double-Panel Film Viewer or LED Double-Panel Film Viewer) is a high-standard professional film reading device specifically designed for forensic pathological diagnosis, criminal technical examination, and medical imaging analysis. It constitutes a core auxiliary light source equipment in the fields of forensic examination and identification, criminal technical bone injury analysis, and medical imaging interpretation. This product is deeply customized for the high-precision interpretation of medical imaging films such as X-ray and CT films in forensic pathological examinations. It perfectly adapts to various professional scenarios, including the analysis of skeletal injuries and the determination of fracture patterns during forensic pathological autopsies, the localization of bullets or foreign objects inside the body, technical review and evidence collection of medical imaging films in cases involving personal injury, traffic accidents, and work-related injuries, and forensic medical imaging education in public security and medical colleges. The system employs a high-quality LCD backlight source with a color temperature exceeding 10000°K. Through precision optical design, it ensures a brightness uniformity of ≥90% across the entire viewing screen (visible area 751mm × 422mm), with a surface brightness continuously adjustable within the range of 800-1500 cd/m². Combined with intelligent split-panel induction, an adjustable timer shutdown, and an ultra-slim 2.5cm structure, it fundamentally resolves operational pain points such as the difficulty in discerning image details due to insufficient color temperature in traditional film viewers, uneven screen brightness impacting the overall assessment of films, and visual fatigue caused by stroboscopic light sources during prolonged film reading. It provides forensic examiners and criminal technical personnel with a "standardized film reading light environment featuring professional high color temperature uniform illumination, intelligent induction for energy saving and convenience, and ultra-slim, long-life visual comfort." It is a key auxiliary equipment for ensuring the accuracy of forensic bone injury analysis, foreign body examination, and pathological diagnosis.

Technical Principle

This device operates based on the principles of LCD backlight illumination and precision optical uniformization technology. The core light source utilizes an 8-tube LCD backlight system. The light emitted by the backlight source passes through a precisely designed optical light guide plate and diffusion film layers, forming an emission surface light source with highly uniform brightness across the viewing screen. The system color temperature is calibrated to ≥10000°K, falling within the high color temperature cold white light range. This effectively penetrates the fogging layer of medical imaging films, allowing key diagnostic information—such as fine bone trabeculae, fracture line morphology, soft tissue layers, and foreign object contours—to be clearly presented with high contrast. The overall visible size of the viewing screen is 751mm × 422mm. Through precision optical design and a multi-tube array arrangement, the system ensures a brightness variation across the entire screen surface of ≤10%, completely eliminating the localized dark areas caused by gaps between the tubes in traditional film viewers. This satisfies the professional demands of forensic examiners for visually uniform assessment of entire X-ray or CT films without visual bias. The surface brightness is continuously adjustable via a knob within the range of 800-1500 cd/m², allowing the operator to flexibly adjust according to film density and diagnostic needs.

In terms of intelligent control, the device is equipped with 3 photoelectric sensors to achieve intelligent split-panel control. When a medical imaging film is inserted into the left or right viewing area, the corresponding side's lightbox automatically illuminates while the other side remains extinguished. Once the film is removed, the lightbox turns off automatically. This smart induction mechanism avoids the energy waste and operational inconvenience caused by traditional film viewers requiring manual switching or remaining fully illuminated at all times. The built-in adjustable timer shutdown function automatically powers off the device after 2 hours of continuous operation by default. Users can also preset the shutdown time to 4 or 8 hours according to actual work needs, effectively preventing power consumption and accelerated light source lifespan degradation caused by forgetting to turn off the device. The light source adopts high-frequency drive technology, with an extremely high flicker frequency, effectively preventing the retinal stimulation caused by low-frequency flickering. Even during prolonged, high-intensity, continuous film reading sessions, the operator's vision is optimally protected.

At the physical structure level, the entire unit features an ultra-slim design, with a thickness of only 2.5 centimeters, external dimensions of 918mm × 495mm × 25mm, and a weight of approximately 9 kg, saving operational space in laboratories and autopsy rooms. The viewing screen is made of high-strength acrylic material that offers excellent light transmission properties and remains deformation-free and colorfast over long-term use. It is paired with a needle-roller self-locking film clamping device that replaces the traditional spring clip design. This system clamps the films from medical schools more securely and smoothly, allowing for quick insertion and removal without easily damaging precious films. The entire unit is compatible with AC 220V, 50/60Hz mains electricity, with a power consumption of only 48W. The light source has an extremely long service life and low heat generation, fully meeting the high-durability demands of year-round uninterrupted operation in forensic laboratories.

Core Functions and Compliance Operational Value

≥10000°K Professional High Color Temperature and ≥90% Brightness Uniformity, Providing a Standardized Film Reading Light Environment Compliant with Medical Imaging Diagnostic Standards
The device's color temperature is calibrated to ≥10000°K, falling within the professional medical film viewer standard color temperature range. The high color temperature cold white light can effectively penetrate the fogging layer and high-density areas of medical imaging films, clearly presenting critical diagnostic information—such as fine bone textures, micro-fracture gaps, soft tissue layers, and metallic foreign body contours—with high contrast. Through precision optical design, the brightness variation across the entire screen surface is ≤10%, completely eliminating edge dark areas and localized bright spots caused by tube gaps. Surface brightness is continuously adjustable within the range of 800-1500 cd/m², allowing the operator to flexibly select the optimal brightness for different film densities (such as thoracic X-rays or soft tissue CT scans). This standardized film reading light environment ensures that the same film, when read at different times or by different operators, receives consistent visual interpretation conditions. This meets the normative requirements for the repeatability and consistency of light source conditions in forensic imaging examinations, providing dual assurance for the objectivity of forensic pathological injury assessment opinions, from the light source to the diagnosis.

Intelligent Split-Panel Induction and Adjustable Timer Shutdown, Enhancing Film Reading Operational Efficiency and Reducing Energy and Equipment Maintenance Costs
The device is equipped with 3 photoelectric sensors to achieve intelligent split-panel control—the side of the lightbox where a film is inserted automatically illuminates, while the other side remains extinguished; light turns off automatically when the film is removed. This design is particularly suited to the forensic pathological examination workflow where multiple films need to be individually reviewed and compared. The operator does not need to manually switch the power on and off or adjust brightness frequently, greatly simplifying the film reading process. The built-in adjustable timer shutdown function automatically powers off after a default of 2 hours, with support for extending to 4 or 8 hours. This effectively prevents the waste of electricity, accelerated light source degradation, and potential electrical fire hazards caused by forgetting to turn off the device after intense examination work. From the level of human-machine interaction, it fully supports the dual requirements of standardized forensic laboratory management and occupational health and safety.

Ultra-Slim 2.5cm Structure and Needle-Roller Self-Locking Clamping Device, Optimizing Laboratory Space Utilization and Protecting Valuable Films
The entire unit has a thickness of only 2.5 centimeters, featuring a compact form factor that can be wall-mounted or placed on a desktop, allowing flexible arrangement within the limited counter space of forensic autopsy rooms, laboratories, or film reading rooms. The viewing screen is made of high-strength acrylic material, remaining deformation-free and colorfast over long-term use, with stable light transmission. The needle-roller self-locking film clamping device replaces the traditional spring clip design, clamping films more securely and smoothly for quick insertion and removal without damaging the film surface. Given that X-ray and CT films in criminal cases are often the sole and irreplaceable original medical evidence, this non-destructive clamping design fully embodies the legal principle of "non-destructive priority, preserving the original appearance" in physical evidence examination. The high-frequency flicker drive and low heat generation characteristics of the light source ensure the visual comfort and occupational health protection of forensic examiners during prolonged, high-intensity film reading work.

Compliant Application Scenarios

Bone Injury and Foreign Object Imaging Analysis Scenario in Forensic Pathological Autopsy
During forensic pathological autopsies, the forensic pathologist uses this film viewer to perform high-precision interpretation of the X-ray films taken of the deceased's body, analyzing the type of bone injury, the orientation of fracture lines, the distribution of comminuted fracture fragments, the degree of joint dislocation, and the precise location of bullets, metallic foreign objects, or calcified lesions within the body. The high color temperature uniform illumination ensures that every detail of the imaging information across the entire film is clearly presented with consistent grayscale, providing objective imaging evidence for determining the cause of death, inferring the mechanism of injury, and analyzing the causative instrument. The film reading process and result judgment fully comply with the standard requirements for the technical conditions of imaging data analysis stipulated in the Standards for Forensic Pathological Autopsy.

Medical Imaging Technical Review Scenario in Criminal Technical Personal Injury Identification
In criminal technical identifications involving personal injury, traffic accidents, and work-related injuries, the forensic examiner uses this film viewer to conduct technical reviews of the examinee's X-ray and CT films, assessing the causal relationship between the fracture injury and the incident in question, and whether the degree of injury meets the legal threshold for minor or serious injury. The uniform high color temperature light source ensures that critical details such as tiny old fracture traces and soft tissue calcifications on the films are not visually missed, providing a light source condition guarantee that meets the applicable standards for the objectivity and accuracy of the expert opinion.

Forensic Imaging Education and Training Scenario in Public Security and Medical Colleges
In the teaching laboratories of criminal police academies and forensic medicine departments of medical schools, this film viewer serves as a standard film reading teaching tool. It is used for X-ray film interpretation instruction in forensic medical imaging diagnosis courses. The double-panel design supports simultaneous film reading and comparison by teachers and students. The intelligent split-panel induction function facilitates the display and explanation of individual films during instruction. It is a foundational teaching tool for cultivating standardized film reading skills in forensic medicine professionals.

Core Technical Parameters

In terms of optical performance, the device utilizes an LCD backlight source configured with 8 tubes, a color temperature of ≥10000°K, a viewing screen visible area of 751mm × 422mm, a brightness variation across the entire screen surface of ≤10%, and a surface brightness continuously adjustable within the range of 800-1500 cd/m² via a rotary knob. For intelligent control, it is equipped with 3 photoelectric sensors enabling intelligent split-panel control—the side where a film is inserted automatically illuminates and turns off when the film is removed. It features a built-in adjustable timer shutdown function, set to 2 hours by default, pre-settable to 4 or 8 hours. Regarding physical specifications, the unit's external dimensions are 918mm × 495mm × 25mm, with a thickness of only 2.5 centimeters and a weight of approximately 9 kg. The viewing screen is made of high-strength acrylic material, and the film clamping device employs a needle-roller self-locking design. For electrical specifications, the power supply is AC 220V, 50/60Hz, with a power consumption of 48W. The light source features long life, high-frequency stroboscopic operation, and low heat generation characteristics. The standard configuration includes one Medical LED Double-Panel Film Viewer main unit, one dedicated power cord, and one copy of the product instruction manual.

Compliant Field Application Cases

In its routine forensic pathological autopsy work, the forensic identification center of a municipal public security department deployed this Medical LED Double-Panel Film Viewer in the forensic autopsy room as the primary film reading device. During the examination of a death case involving a fall from a height, the forensic pathologist systematically inserted the multiple full-body X-ray films of the deceased into the film viewer one by one for assessment. Under the ≥10000°K high color temperature uniform illumination, the pathologist clearly identified bilateral comminuted calcaneal fractures, a lumbar vertebral compression fracture, and the fracture line morphology and displacement of a distal radius fracture. Simultaneously, a minute metallic foreign body was discovered within the soft tissue of the left lower leg—later confirmed through extraction and testing to be a metal fragment from a window frame embedded during the fall. These imaging findings provided objective imaging technical support for determining the point of impact, the height of the fall, and the mechanism of injury formation. The consistency of the light source conditions throughout the film reading process ensured that the interpretation standard for each X-ray film was uniform. The film reading records and imaging analysis were comprehensively archived as a technical appendix to the forensic expert opinion.

When accepting a re-examination case of personal injury from a traffic accident, a forensic identification center needed to conduct a technical review of the examinee's cervical, thoracic, and right lower limb X-ray films to assess the degree of fracture injury and its correlation to the accident as determined in the original assessment. The forensic examiner used this film viewer, adjusting the optimal reading brightness within the range of 800-1500 cd/m² for each film according to its density. Under the uniform high color temperature light source, the examiner reviewed the fracture line locations marked in the original assessment one by one. The examiner discovered that a vertebral body image originally identified as an "old compression fracture" indeed exhibited old characteristics when observed at 800 cd/m² brightness. However, when the brightness was increased to 1500 cd/m², a previously unseen disordered arrangement of fresh bone trabeculae appeared around the area, suggesting the potential concurrent presence of a new injury. This finding was later confirmed through CT 3D reconstruction. The examiner subsequently corrected the original expert conclusion based on this evidence. In this case, the adjustable brightness function of the film viewer provided crucial optical support for the examiner to accurately differentiate between old and new mixed injuries. The corrected expert conclusion was admitted during court cross-examination.

Manufacturer Information: Beijing Best United Technology Co., Ltd.
Website: https://www.bestlh.com
Address: Building C9, Jianziban, No.1 Courtyard, Jinghai Sixth Road, Yizhuang Development Zone, Beijing
Tel: 010-56526048