Method and apparatus for discriminating against masking reflections
阅读：944发布：2022-08-05
专利汇可以提供Method and apparatus for discriminating against masking reflections专利检索，专利查询，专利分析的服务。并且A method and means for discriminating against masking reflections reflected by an object or medium separating an observer from an object which it is desired to view. The desired object and medium are both illuminated by two alternating light sources emitting light of two different wave lengths. The light sources are adjusted so that a detector detects equal amounts of light reflected by the masking medium due to each light source. Assuming, however, that the object which it is desired to view has different spectral characteristics than the masking medium, it will reflect varying amounts of light from the two light sources as the light sources alternate. The reflected light from both the medium and the desired object is incident on a sensing means such as an image dissector and means are provided to separate the AC signal which will be due to reflections from the desired object from the DC signal which will be due to reflections from the masking medium.，下面是Method and apparatus for discriminating against masking reflections专利的具体信息内容。
1. A method for viewing an object separated from a viewer by a masking medium wherein the object and the masking medium have different spectral reflection characteristics comprising the sTeps of illuminating the object and masking medium with alternating light from two light sources having different spectral outputs, adjusting the intensities of the two light sources so that the amount of light from one light source that is reflected by the masking medium is approximately equal to the amount of light from the other light source that is reflected by the masking medium, sensing the total light reflected by the object and masking medium as the two light sources alternate and generating an electrical signal in response thereto, filtering the electrical signal to extract the AC portion thereof and displaying the AC portion whereby a view of only the object is displayed.
2. A method for viewing an object separated from a viewer by a masking medium wherein the object and the masking medium have different spectral reflection characteristics comprising the steps of illuminating the object and masking medium with light to form a reflected object beam and a reflected masking beam, alternately filtering the reflected object and masking beams with at least two filters having different spectral characteristics with light transmissivity of the at least two filters adjusted so that equal intensities of the reflected masking beam are transmitted therethrough, sensing the filtered reflected object and masking beams as the at least two filters are alternated and generating an electrical signal in response thereto, separating AC components of the electrical signals from DC components thereof and converting the AC portion to a display whereby a view of only the object is obtained.
3. Apparatus for viewing an object separated from a viewer by a masking medium wherein the object and the masking medium have different spectral reflection characteristics comprising alternately excited first and second light sources for illuminating the object and masking medium whereby object and masking reflected light beams are formed, said first and second light sources being adjusted so that the masking reflected light beams due to each source are of the same intensity, sensing means responsive to said reflected object and masking light beams for developing an electrical signal, and display means responsive to said electrical signal for generating a display which is a view of the object uncontaminated by masking reflections, said sensing means comprising a television camera having a frame rate approximately equal to the rate of alternation of said first and second light sources and including means for subtracting succeeding frames to form a difference signal whereby said display means is responsive to said difference signal for generating a display which is a view of the object uncontaminated by masking reflections.
4. Apparatus for viewing an object separated from a viewer by a masking medium wherein the object and the masking medium have different spectral reflection characteristics comprising light source means forming a light beam for illuminating the object and masking medium whereby object and masking medium reflected light beams are formed, an optical filter having at least two portions having different spectral characteristics, means for positioning said optical filter so that in an alternate fashion each of the two portions thereof filters both said object and masking medium reflected light beams to form filtered object and masking medium reflected light beams, a detector on which said filtered object and masking medium reflected light beams are incident, said detector adapted to generate an electrical signal, having an AC and a DC component in response thereto, the light transmissivity of said two portions being adjusted so that as the two portions alternate equal intensities of masking medium filtered reflected light beams are transmitted therethrough as sensed by said detector, and display means responsive to said AC component for generating a display of the object uncontaminated by masking reflections.
5. Apparatus in accordance with claim 4 including filtering mEans for separating said electrical signal into AC and DC components and wherein said display means is responsive to said AC component.
6. Apparatus for viewing an object separated from a viewer by a masking medium wherein the object and the masking medium have different spectral reflection characteristics comprising light source means forming a light beam for illuminating the object and masking medium whereby object and masking medium reflected light beams are formed, an optical filter having at least two portions having different spectral characteristics, means for positioning said optical filter so that in an alternate fashion each of the two portions thereof filters both said object and masking medium reflected light beams to form filtered object and masking medium reflected light beams, a detector on which said filtered object and masking medium reflected light beams are incident, said detector adapted to generate an electrical signal having an AC and a DC component in response thereto, the light transmissivity of said two portions being adjusted so that as the two portions alternate equal intensities of masking medium filtered reflected light beams are transmitted therethrough as sensed by said detector, and display means responsive to said AC component for generating a display of the object uncontaminated by masking reflections, said detector comprising a television camera having a frame rate approximately equal to the rate of alternation of said first and second portions of said optical filter and including means for subtracting succeeding frames to form a difference signal whereby said display means is responsive to said difference signal for generating a display which is a view of the object uncontaminated by masking reflections.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 基于非共面H型谐振器和蟹腿型支撑梁的双轴体微机械谐振式加速度计 | 2020-05-08 | 40 |
| 脑电的阈下姓名身份认证方法 | 2020-05-11 | 882 |
| 开关转换器及其控制电路、使用它的照明装置、电子设备 | 2020-05-12 | 125 |
| 机芯、电子钟表以及电机驱动控制方法 | 2020-05-12 | 975 |
| 用频谱域智能间隙填充编码或解码音频信号的设备及方法 | 2020-05-13 | 503 |
| 半导体器件 | 2020-05-11 | 192 |
| 包括操作为多个通道的多个裸片的半导体装置 | 2020-05-13 | 381 |
| 用于由功能硬件组件产生的噪音的控制系统 | 2020-05-12 | 229 |
| 处理系统、集成电路和微控制器 | 2020-05-12 | 344 |
| 一种多人语音的分离方法和装置 | 2020-05-12 | 12 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈