REFLECTED LIGHT DISCRIMINATING DEVICE

• Main Authors: HIURA SHINSAKU, MAEDA RYOTA
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING

To allow an image to be directly observed with a naked eye by selecting only direct light or indirect light from among reflected light of light applied to an object.SOLUTION: Slit light 11 emitted from a light source 3 is reflected by an object 7 or 8. Although a direct reflection component 12 is reflected by a reflection part 5b via a lens 4 and is observed by an observer 9, an indirect reflection component 13 is not observed since the indirect reflection component reaches a non-reflection part 5a. Although light is reflected for three times on a polyhedron mirror 1 that is rotated around a shaft 6, direct reflection components are always guided to the reflection part 5b regardless of a rotational angle of the mirror since reflection surfaces 1a and 1b are linked mechanically from among their reflection surfaces. Although light is reflected for the third time by a reflection surface 1c for observing a slit-like direct reflection component as a two-dimensional image, objects are observed stationarily for the observer 9 since the reflection surfaces 1b, 1c are linked mechanically. By changing an arrangement of the non-reflection part 5a and the reflection part 5b on a mask surface 5, only indirect reflection components can also be observed.SELECTED DRAWING: Figure 1 【課題】被写体に照射した光の反射光のうち、直接光または間接光のみを選別し、その像を肉眼で直接観察する。【解決手段】光源３から発したスリット光１１が被写体７ないし８で反射される。このうち直接反射成分１２はレンズ４を介し反射部５ｂで反射され、観察者９に観察されるが、間接反射成分１３は非反射部５ａへ到達するため観察されない。光は軸６のまわりに回転する多面体ミラー１上で３回反射されるが、それらの反射面のうち１ａと１ｂは機械的に連動しているため、ミラーの回転角によらず直接反射成分は必ず５ｂに導かれる。そのスリット状の直接反射成分を２次元像として観察するために１ｃで３回目の反射が行われるが、反射面１ｂと１ｃは機械的に連動しているために被写体は観察者９にとって静止して観察される。マスク面５上の非反射部５ａと反射部５ｂの配置を変えることで間接反射成分のみを観察することも出来る。【選択図】図１