STRAIGHT LINE LAYOUT TYPE EYEPIECE VIDEO DISPLAY APPARATUS

• Main Author: IWAI JUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 22.08.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To compactly configure an eyepiece video display apparatus using a reflection type video element.SOLUTION: The eyepiece video display apparatus comprises a display optical system 1 emitting video light and an eyepiece optical system 2 guiding the video light to the pupil of an observer In the display optical system 1, a polarization separation element 10 makes first polarization component light reflect and second polarization component light penetrate therethrough. A light source 20 outputs light to the polarization separation element. A reflection part 30 converts the first polarization component light reflected by the polarization separation element and contained in the output light from the light source into the second polarization component light and reflects the output light to make the same incident on the polarization separation element. A reflection type video element 40 reflects reflection light penetrating through the polarization separation element and coming from the reflection part and converts the same into video light containing the first polarization component light to make the video light incident on the polarization separation element. Therefore, the first polarization component light reflected on the polarization separation element and contained in the video light is made incident on the eyepiece optical system.SELECTED DRAWING: Figure 1 【課題】反射型映像素子を利用した接眼映像表示装置をコンパクトに構成する。【解決手段】映像光を射出する表示光学系１と，映像光を観察者の瞳に導く接眼光学系２を備える。表示光学系１において，偏光分離素子１０は，第１の偏光成分光を反射させるとともに，第２の偏光成分光を透過させる。光源２０は，偏光分離素子に対して光を出力する。反射部３０は，偏光分離素子を反射した光源からの出力光に含まれる第１の偏光成分光を第２の偏光成分光に変換するとともに，この出力光を反射して偏光分離素子へと入射させる。反射型映像素子４０は，偏光分離素子を透過した反射部からの反射光を反射するとともに，第１の偏光成分光を含む映像光に変換して，この映像光を偏光分離素子へと入射させる。これにより，偏光分離素子を反射した映像光に含まれる第１の偏光成分光が，接眼光学系に入射する。【選択図】図１