大视场无目镜显微镜——无目镜高清显示器观察·4X-20X立体成像·超长工作距离·超大景深·工具痕迹/枪弹痕迹/立体物证宏观比对与检验专业平台（刑事技术痕迹检验/文件检验/司法鉴定协同会检核心装备）

 

大视场无目镜显微镜——无目镜高清显示器观察·4X-20X立体成像·超长工作距离·超大景深·工具痕迹/枪弹痕迹/立体物证宏观比对与检验专业平台（刑事技术痕迹检验/文件检验/司法鉴定协同会检核心装备）

〖重要合规前置声明〗 本产品为国家管制类刑事技术检验鉴定专用特种装备，仅面向具备法定执法权限与司法鉴定资质的各级公安机关刑事技术部门、人民检察院技术部门、司法鉴定机构及授权刑事技术实验室定向研发、生产与供应，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、配备、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》《公安机关刑事案件现场勘验检查规则》及国家关于刑事技术装备管理、物证影像采集的相关法律法规与行业技术标准，必须由经过专业培训、取得相应刑事技术或痕迹检验岗位资质的人员规范操作，严禁无资质单位和个人违规购置、使用、转让本装备，严禁因违规操作导致物证污损或影像失真，严禁伪造、篡改或未经授权对外泄露通过本设备获取的物证影像数据。

产品概述

大视场无目镜显微镜——无目镜高清显示器观察·4X-20X立体成像·超长工作距离·超大景深·工具痕迹/枪弹痕迹/立体物证宏观比对与检验专业平台（亦称XDP-1大视场无目镜显微镜、无目镜立体显微镜）是一款基于实体光学成像原理设计的大视场观察系统，属于公安刑事技术痕迹检验、文件检验及司法鉴定宏观立体比对领域的创新性核心光学检验装备。该产品专为需要宏观立体观测、非接触式检验及长时间操作的物证鉴定工作深度优化，通过革命性的无目镜设计将观察者从传统显微镜的固定姿态中解放出来，结合超长工作距离、大景深与大视野的光学特性，完美适配工具痕迹与枪弹痕迹的宏观形态比对与空间关系分析、粗糙表面及立体物证的整体三维形貌观察、文件检验中的宏观特征分析以及教学演示与多人协同会检等多种专业场景。系统总放大倍率范围为4倍至20倍，用户可根据检验需求选配2倍、4倍、6倍、8倍或10倍物镜，操作者无需通过目镜观察，而是直接观看独立的高清显示器，头部可自由活动，彻底消除了传统显微镜可能引起的视力疲劳、颈部与背部僵硬问题，能够为刑事技术鉴定人提供“无目镜无疲劳观察、大视场立体成像、超长工作距离操作自由、多人共享协同会检” 的专业级宏观立体检验能力，是传统体视显微镜在特定检验场景下的重要补充与升级方案。

技术原理

该系统基于实体光学成像原理工作。其核心光学系统由物镜、变倍体与内置高分辨率数字成像模块组成。物镜采集被检物证表面的反射光，经变倍体在4倍至20倍范围内连续或分档调节放大后，由内置数字成像模块将光学图像转换为高分辨率数字视频信号，实时传输至独立的高清显示器上供操作者观察。系统采用实体光学成像技术，提供具有真实空间感和立体感的图像——与传统二维平面显微图像不同，立体成像能够完整保留被检物证表面的深度信息，对于判断工具撬压痕迹的凹陷深度、弹壳底火击发痕迹的凸起形态、文件压痕的立体层次及纺织品撕裂口的空间走向等三维特征至关重要。操作者可根据检验需求选配2倍、4倍、6倍、8倍或10倍物镜，实现不同放大倍率的灵活配置。

在光学特性层面，系统提供超大视野与超大景深。大视野便于快速定位和观察较大范围的检材区域，在检验大型工具（如撬棍、断线钳）造成的痕迹时，无需反复移动检材即可在同一视野内完整观察整个痕迹区域的线条分布与流向；超大景深则确保即使在检材表面不平整或需要同时观察一定深度范围内的多个特征时，也能在无需频繁调焦的情况下保持全画面图像清晰——这一特性对于观察粗糙断裂面、扭曲金属片、凹凸不平的锁具破坏痕迹等三维立体物证尤为重要，从根本上解决了传统体视显微镜因景深浅导致高低起伏表面需逐层调焦才能完整观察的实战痛点。

在人机交互层面，系统的无目镜设计是其区别于传统体视显微镜的核心创新。操作者无需双眼紧贴目镜筒，而是以自然、放松的坐姿直接观看独立的高清显示器。头部可自由活动，不受目镜固定位置的束缚，操作者可在长时间检验中保持舒适姿态，并随时与同事进行视线交流与讨论，无需中断检验操作。物镜与检材之间具有超长工作距离，为在检材上方使用镊子、探针、比例尺等辅助工具进行操作提供了充足的空间，实现了真正的非接触式或辅助操作式观察，特别适合在检验过程中需要同时操作或避免触碰的精密、脆弱物证。

核心功能与合规实战价值

无目镜设计彻底消除眼疲劳与职业劳损，支撑长时间高强度物证检验的持续性
系统以独立高清显示器取代传统目镜，操作者无需以固定姿势双眼紧贴目镜筒，而是以自然放松的坐姿直接观看屏幕。该设计从根本上消除了传统体视显微镜长期使用必然导致的视力疲劳、眼肌紧张、颈部与背部僵硬等职业性健康损害，使法医鉴定人能够在连续数小时的高强度检验作业中始终保持舒适的观察状态与稳定的检验质量。检验过程的可视化与舒适度提升为鉴定文书中每一项检验结论的准确性提供了从操作者身体状态层面的基础保障。

大视场、超大景深与长工作距离组合，满足宏观立体物证与粗糙表面的整体高效检验需求
系统提供超大视野与超大景深的光学组合。在检验工具痕迹时，大视野使鉴定人能够同时完整观察整个痕迹区域的线条分布与流向，超大景深则确保即使在观察粗糙的剪切断面、扭曲的金属表面或不规则的骨骼断裂边缘等高低起伏显著的立体物证时，也能在无需频繁调焦的情况下保持全画面清晰。物镜与检材之间超长的工作距离为在检材上方使用镊子、探针等辅助工具提供了充足的操作空间，实现了非接触或辅助操作式观察，特别适合需要在检验过程中同时进行精确操作或避免触碰的精密、脆弱物证。

4X-20X灵活倍率配置与立体成像，适配从宏观整体比对到局部细节分析的多层次检验需求
系统总放大倍率范围为4倍至20倍，用户可选配2倍、4倍、6倍、8倍或10倍物镜实现灵活配置。立体成像技术完整保留被检物证表面的深度信息与空间关系，使鉴定人能够准确判断工具撬压痕迹的凹陷深度、弹壳底火击发痕迹的凸起形态及文件压痕的立体层次等三维特征。低倍率下的大视野宏观比对与高倍率下的局部细节分析可在同一设备上无缝切换，满足工具痕迹同一认定中从整体形态匹配到局部线条接合的全流程检验需求。

多人共享屏幕与协同会检，适应教学演示、专家会诊与法庭示证的专业需求
无目镜设计使观察屏幕可以轻松共享——在小组教学、专家会诊或法庭示证中，所有参与者可同步观看相同的立体图像并进行实时讨论，无需轮流中断检验来让每个人逐一通过目镜观察。该功能有效提升了痕迹检验鉴定工作的协同效率与透明度，在涉及重大案件、多机构联合鉴定或法庭质证中具有传统单目或双目体视显微镜无法实现的协同工作优势。

合规应用场景

工具痕迹与枪弹痕迹的宏观比对与空间关系分析场景
在工具痕迹检验中，鉴定人使用本系统对撬棍、断线钳等大型工具造成的撬压痕迹、剪切断面进行大视野宏观整体观察，在低倍率下快速完成痕迹的形态特征匹配与线条流向分析。对于弹壳底火上的击发痕迹、抛壳挺痕等枪弹痕迹，立体成像完整呈现痕迹的凸起与凹陷特征及其空间位置关系，为痕迹的同一认定提供三维形态学证据。操作者可在屏幕前保持舒适坐姿完成全部比对检验，检验过程与结果完全符合工具痕迹检验技术规范的要求。

立体物证与粗糙表面整体三维形貌观察场景
对破损的锁具、扭曲的金属片、纺织品撕裂口等凹凸不平的立体物证，鉴定人使用本系统进行整体三维形貌观察和记录。超大景深确保在物证表面起伏显著的情况下全画面清晰，无需逐层调焦；大视野完整呈现整个破损区域的形态轮廓与特征分布，为物证的整体形态学描述与鉴定提供了标准化的宏观观测手段。

文件检验中的宏观特征分析与协同会检场景
在文件检验中，鉴定人使用本系统对纸张的整体纤维分布、大面积涂抹痕迹、印章与纸张的立体压痕效应以及大型文件上的痕迹布局关系进行宏观观察。无目镜设计使多名鉴定人或检察官、法官可同步观看屏幕进行协同会检，为文件真伪与变造鉴定的讨论与决策提供了共享的可视化平台。

核心技术参数

成像原理方面，系统基于实体光学成像技术，提供具有真实空间感和立体感的立体图像。放大倍率方面，系统总放大倍率范围为4倍至20倍，用户可选配2倍、4倍、6倍、8倍或10倍物镜实现灵活配置。光学特性方面，系统提供超大视野与超大景深，物镜与检材之间具有超长工作距离，便于辅助工具操作与非接触式观察。观察方式方面，采用无目镜设计，操作者直接观看独立的高清显示器，头部可自由活动，彻底消除传统目镜观察引起的视力疲劳与颈背僵硬。核心适用方面，专用于工具痕迹、枪弹痕迹、立体物证、粗糙表面及文件宏观特征的宏观立体比对与检验。

合规实战应用案例

某市公安刑事科学技术研究所在受理一起系列盗窃案件的工具痕迹检验时，需对多枚嫌疑撬棍制作的实验样本与现场提取的防盗门板上的撬压痕迹进行宏观形态比对。因防盗门板尺寸较大且痕迹分布于门板不同区域，鉴定人使用本大视场无目镜显微镜在4倍低倍率下对门板痕迹区域进行整体大视野观察。立体成像完整呈现了撬压痕迹的凹陷形态与线条分布特征，鉴定人在屏幕前以舒适坐姿完成了全部比对检验。经与嫌疑撬棍实验样本的立体图像进行形态匹配，成功认定现场撬压痕迹系由其中一根嫌疑撬棍形成。鉴定人随后将屏幕上观察到的立体比对图像拍照存档，作为鉴定文书的技术附件。在法庭质证中，鉴定人当庭说明了无目镜显微镜的成像原理与检验方法，法庭对鉴定结论予以采信。

某司法鉴定中心在受理一起涉枪案件的枪弹痕迹鉴定时，需对送检弹壳底火上的击发痕迹与样本弹壳进行宏观比对。鉴定人使用本系统在10倍放大条件下对两枚弹壳的底火区域进行立体成像观察，完整呈现了击发痕迹的凸起形态、边缘轮廓及空间位置关系。操作者与复核鉴定人通过共享屏幕同步观察、讨论并确认了特征符合点与差异点，协同会检过程在数分钟内高效完成。鉴定人随即对屏幕上的立体比对图像进行拍照固定并出具鉴定意见，鉴定结论在法庭审理中被依法采信。

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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Wide-Field Non-Eyepiece Microscope — Non-Eyepiece HD Monitor Observation · 4X-20X Stereoscopic Imaging · Extra-Long Working Distance · Ultra-Large Depth of Field · Tool Mark / Firearm Trace / 3D Evidence Macroscopic Comparison & Examination Professional Platform (Core Equipment for Criminal Technical Trace Evidence Examination / Document Examination / Judicial Forensic Collaborative Examination)

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

〖Important Compliance Precaution〗 This product is a state-controlled specialized equipment for criminal technical forensic examination and identification, which is solely developed, produced and supplied to authorized entities such as criminal technical departments of public security organs, technical departments of people's procuratorates, forensic identification institutions, and authorized criminal technical laboratories with statutory law enforcement authority and judicial forensic identification qualifications. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, deployment, 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 Rules for On-Site Criminal Case Scene Investigation and Examination by Public Security Organs, and national laws, regulations and industrial technical standards regarding criminal technical equipment management and evidence imaging acquisition. Operation must be carried out exclusively by professionally trained personnel holding corresponding criminal technical or trace evidence examination post qualifications. Unauthorized units and individuals are strictly forbidden from purchasing, using or transferring this equipment. Any contamination of evidence or imaging distortion caused by improper operation, as well as the forgery, alteration, or unauthorized external disclosure of evidence imaging data acquired through this equipment, is strictly prohibited.

Product Overview

The Wide-Field Non-Eyepiece Microscope — Non-Eyepiece HD Monitor Observation, 4X-20X Stereoscopic Imaging, Extra-Long Working Distance, Ultra-Large Depth of Field, Tool Mark / Firearm Trace / 3D Evidence Macroscopic Comparison & Examination Professional Platform (also referred to as the XDP-1 Wide-Field Non-Eyepiece Microscope or Non-Eyepiece Stereoscopic Microscope) is a wide-field observation system designed based on the principle of stereoscopic optical imaging. It constitutes an innovative core optical examination equipment in the fields of criminal technical trace evidence examination, document examination, and judicial forensic macroscopic stereoscopic comparison. This product is deeply optimized for evidence identification work requiring macroscopic stereoscopic observation, non-contact examination, and prolonged operation. Through its revolutionary non-eyepiece design, it liberates the observer from the fixed posture required by traditional microscopes. Combined with the optical characteristics of extra-long working distance, large depth of field, and wide field of view, it perfectly adapts to various professional scenarios, including macroscopic morphological comparison and spatial relationship analysis of tool marks and firearm traces, overall 3D morphological observation of rough surfaces and solid evidence, macroscopic feature analysis in document examination, as well as teaching demonstrations and multi-person collaborative examinations. The total system magnification range is 4X to 20X, and users can optionally equip 2X, 4X, 6X, 8X, or 10X objective lenses according to their examination needs. The operator observes directly through an independent HD monitor rather than through eyepieces, allowing free head movement. This completely eliminates the visual fatigue, neck stiffness, and back pain potentially caused by traditional microscopes. It provides criminal technical forensic examiners with "non-eyepiece fatigue-free observation, wide-field stereoscopic imaging, extra-long working distance operational freedom, and multi-person sharing for collaborative examination" professional-grade macroscopic stereoscopic examination capability. It serves as an important supplementary and upgrading solution to traditional stereomicroscopes in specific examination scenarios.

Technical Principle

This system operates based on the principle of stereoscopic optical imaging. Its core optical system consists of an objective lens, a zoom body, and a built-in high-resolution digital imaging module. The objective lens collects the reflected light from the surface of the evidence under examination. After being magnified by the zoom body, which allows continuous or stepped adjustment within the 4X to 20X range, the optical image is converted into a high-resolution digital video signal by the built-in digital imaging module and transmitted in real time to an independent HD monitor for the operator to observe. The system employs stereoscopic optical imaging technology, providing images with a true sense of spatial depth and three-dimensionality. Unlike traditional two-dimensional planar microscopic images, stereoscopic imaging completely preserves the depth information of the surface of the evidence under examination. This is crucial for judging the depth of tool prying marks, the raised morphology of firing pin impressions on cartridge case primers, the three-dimensional layering of document indentations, and the spatial orientation of textile tear openings. Operators can optionally equip 2X, 4X, 6X, 8X, or 10X objective lenses according to their examination needs, achieving flexible configuration of different magnifications.

In terms of optical characteristics, the system provides an ultra-large field of view and an ultra-large depth of field. The large field of view facilitates the rapid localization and observation of relatively large areas of the evidence. When examining marks caused by large tools (such as crowbars and bolt cutters), the entire distribution and flow direction of striations across the entire mark area can be observed within a single field of view without repeatedly moving the evidence. The ultra-large depth of field ensures that even when the evidence surface is uneven or multiple features within a certain depth range need to be observed simultaneously, the image remains clear across the entire frame without the need for frequent refocusing. This characteristic is particularly important for observing three-dimensional physical evidence such as rough fracture surfaces, twisted metal sheets, and uneven lock destruction marks. It fundamentally resolves the operational pain point of traditional stereomicroscopes, where their shallow depth of field requires layer-by-layer focusing to completely observe uneven surfaces.

At the human-machine interaction level, the system's non-eyepiece design is its core innovation that distinguishes it from traditional stereomicroscopes. The operator does not need to press both eyes tightly against eyepiece tubes. Instead, they can directly view an independent HD monitor while sitting in a natural, relaxed posture. The head can move freely, unrestricted by the fixed position of the eyepieces. The operator can maintain a comfortable posture during prolonged examinations and readily engage in eye contact and discussion with colleagues without interrupting the examination operation. An extra-long working distance exists between the objective lens and the evidence, providing ample space for using auxiliary tools such as tweezers, probes, and scales above the evidence. This enables truly non-contact or tool-assisted observation, making it particularly suitable for examining precision or fragile evidence that requires simultaneous manipulation or must be protected from contact during the examination process.

Core Functions and Compliance Operational Value

Non-Eyepiece Design Completely Eliminates Eye Fatigue and Occupational Strain, Supporting the Sustainability of Prolonged, High-Intensity Evidence Examination
The system replaces traditional eyepieces with an independent HD monitor, allowing the operator to directly view the screen in a natural, relaxed sitting posture rather than in a fixed position with both eyes pressed against the eyepiece tubes. This design fundamentally eliminates the occupational health hazards inevitably caused by long-term use of traditional stereomicroscopes, such as visual fatigue, eye muscle tension, and neck and back stiffness. It allows the forensic examiner to maintain a comfortable observation state and stable examination quality throughout continuous, high-intensity examination work lasting several hours. The visualization and comfort enhancement of the examination process provides a foundational guarantee, from the perspective of the operator's physical condition, for the accuracy of every examination conclusion in the expert report.

Combination of Large Field of View, Ultra-Large Depth of Field, and Long Working Distance, Meeting the Overall Efficient Examination Needs of Macroscopic 3D Evidence and Rough Surfaces
The system provides an optical combination of an ultra-large field of view and an ultra-large depth of field. When examining tool marks, the large field of view allows the examiner to simultaneously and completely observe the distribution and flow direction of striations across the entire mark area. The ultra-large depth of field ensures that even when observing three-dimensional evidence with significant surface relief, such as rough shear fracture surfaces, twisted metal surfaces, or irregular bone fracture edges, the image remains clear across the entire frame without the need for frequent refocusing. The extra-long working distance between the objective lens and the evidence provides ample operational space for using auxiliary tools such as tweezers and probes above the evidence, enabling non-contact or tool-assisted observation, particularly suitable for precision or fragile evidence that requires simultaneous precise manipulation or must be protected from contact.

Flexible 4X-20X Magnification Configuration and Stereoscopic Imaging, Adapting to Multi-Level Examination Needs from Overall Macroscopic Comparison to Localized Detail Analysis
The total system magnification range is 4X to 20X, and users can optionally equip 2X, 4X, 6X, 8X, or 10X objective lenses for flexible configuration. Stereoscopic imaging technology completely preserves the depth information and spatial relationships of the surface of the evidence under examination, allowing the examiner to accurately determine the depth of tool prying marks, the raised morphology of firing pin impressions on cartridge case primers, and the three-dimensional layering of document indentations. Macroscopic comparison with a large field of view at low magnification and localized detail analysis at high magnification can be seamlessly switched on the same device, meeting the full-process examination needs of tool mark identification, from overall morphological matching to localized striation alignment.

Multi-Person Screen Sharing and Collaborative Examination, Adapting to the Professional Needs of Teaching Demonstrations, Expert Consultation, and Courtroom Evidence Presentation
The non-eyepiece design allows the observation screen to be easily shared. In group teaching, expert consultation, or courtroom evidence presentation, all participants can synchronously view the same stereoscopic images and engage in real-time discussion without taking turns interrupting the examination to individually observe through the eyepieces. This function effectively enhances the collaborative efficiency and transparency of trace evidence examination and identification work. It offers a collaborative work advantage unattainable with traditional monocular or binocular stereomicroscopes in cases involving major incidents, multi-agency joint identification, or court cross-examination.

Compliant Application Scenarios

Macroscopic Comparison and Spatial Relationship Analysis Scenario for Tool Marks and Firearm Traces
In tool mark examination, the examiner uses this system to perform large-field, macroscopic overall observation of prying marks and shear fracture surfaces caused by large tools such as crowbars and bolt cutters. At low magnification, they can quickly complete the morphological feature matching and striation flow direction analysis of the marks. For firearm traces such as firing pin impressions and ejector marks on cartridge case primers, stereoscopic imaging completely presents the raised and recessed features and their spatial positional relationships, providing three-dimensional morphological evidence for the identification of the marks. The operator can complete all comparative examinations while maintaining a comfortable sitting posture in front of the screen. The examination process and results fully comply with the requirements of tool mark examination technical standards.

Overall 3D Morphological Observation Scenario for Solid Evidence and Rough Surfaces
For uneven three-dimensional evidence such as damaged locks, twisted metal sheets, and textile tear openings, the examiner uses this system for overall 3D morphological observation and documentation. The ultra-large depth of field ensures that the entire frame remains clear despite significant surface relief, without the need for layer-by-layer focusing. The large field of view completely presents the morphological contours and feature distribution of the entire damaged area, providing a standardized macroscopic observation method for the overall morphological description and identification of the evidence.

Macroscopic Feature Analysis and Collaborative Examination Scenario in Document Examination
In document examination, the examiner uses this system for macroscopic observation of the overall fiber distribution of paper, large-area obliteration marks, the three-dimensional indentation effect of seals on paper, and the spatial relationship of marks on large documents. The non-eyepiece design allows multiple examiners, prosecutors, or judges to synchronously view the screen for collaborative examination, providing a shared visualization platform for discussion and decision-making on the authenticity and alteration of documents.

Core Technical Parameters

In terms of imaging principle, the system is based on stereoscopic optical imaging technology, providing stereoscopic images with a true sense of spatial depth and three-dimensionality. For magnification, the total system magnification range is 4X to 20X, and users can optionally equip 2X, 4X, 6X, 8X, or 10X objective lenses for flexible configuration. Regarding optical characteristics, the system provides an ultra-large field of view and an ultra-large depth of field, with an extra-long working distance between the objective lens and the evidence, facilitating tool-assisted operation and non-contact observation. For the observation method, a non-eyepiece design is adopted, where the operator directly views an independent HD monitor with free head movement, completely eliminating the visual fatigue and neck and back stiffness caused by traditional eyepiece observation. In terms of core application, it is specifically designed for the macroscopic stereoscopic comparison and examination of tool marks, firearm traces, 3D evidence, rough surfaces, and macroscopic features of documents.

Compliant Field Application Cases

When accepting a tool mark examination case for a series of thefts, a municipal criminal technical science research institute needed to perform macroscopic morphological comparison between test samples made with multiple suspected crowbars and the prying marks collected from the security door panel at the scene. Because the security door panel was relatively large and the marks were distributed across different areas of the panel, the examiner used this Wide-Field Non-Eyepiece Microscope at 4X low magnification to perform an overall large-field observation of the marked areas on the door panel. The stereoscopic imaging completely presented the recessed morphology and striation distribution characteristics of the prying marks. The examiner completed all comparative examinations while sitting comfortably in front of the screen. Through morphological matching with stereoscopic images of test samples from the suspected crowbars, it was successfully determined that the scene prying marks were formed by one of the suspected crowbars. The examiner then captured and archived the stereoscopic comparison images observed on the screen as a technical appendix to the expert report. During court cross-examination, the forensic expert explained the imaging principle and examination method of the non-eyepiece microscope in court, and the court admitted the identification conclusion.

When accepting a firearm trace identification case involving a firearm, a forensic identification center needed to perform a macroscopic comparison between the firing pin impression on the primer of a submitted cartridge case and that of a sample cartridge case. The examiner used this system under 10X magnification to perform stereoscopic imaging observation of the primer areas of the two cartridge cases. The raised morphology, edge contours, and spatial positional relationships of the firing pin impressions were completely presented. The operator and the review examiner synchronously observed, discussed, and confirmed the points of correspondence and difference through the shared screen, completing the collaborative examination process efficiently within minutes. The examiner immediately captured and documented the stereoscopic comparison images on the screen and issued an expert opinion. The identification conclusion was lawfully admitted during the court proceedings.

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