REFLECTIVE POLARIZING ELEMENT BONDED LENS, AND HEAD-MOUNT DISPLAY

To obtain a reflective polarizing element bonded lens which can provide a high resolution video while effectively suppressing the occurrence of flares and ghosts and a decrease in contrast, in a head-mount display that has a pancake structure being a thin and lightweight optical system.SOLUTION: A l...

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Bibliographic Details
Main Authors YAMAHATA YUTA, TADA YUTAKA, DOI SEITARO, SUGIMURA SEIJI, HIDAKA MOTONOBU
Format Patent
LanguageEnglish
Japanese
Published 16.01.2024
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Summary:To obtain a reflective polarizing element bonded lens which can provide a high resolution video while effectively suppressing the occurrence of flares and ghosts and a decrease in contrast, in a head-mount display that has a pancake structure being a thin and lightweight optical system.SOLUTION: A lens that is used in an image display device having an eyepiece optical system that guides light from an image display element toward the eye balls of an observer is a reflective polarizing element bonded lens that is a resin lens composed of a thermoplastic resin composition having an aryl group or an alicyclic group in the main or side chain. The resin lens has a glass transition temperature Tg of 115°C to 150°C and an absolute value of photoelastic coefficient of 10×10-12 Pa-1 or less, and the resin lens has a first face and a second face that are opposite each other with a reflective polarizing element bonded to one of the faces.SELECTED DRAWING: Figure 1 【課題】本発明は、薄型かつ軽量な光学系であるパンケーキレンズ構成を持つヘッドマウントディスプレイにおいて、フレアやゴーストの発生そしてコントラストの低下を効果的に抑制させつつ、高解像度の映像を提供可能な反射型偏光素子貼合レンズを得ることを目的とする。【解決手段】上記課題を達成するべく、本発明は、画像表示素子からの光を観察者の眼球に向かって導く接眼光学系を有する画像表示装置に使用するレンズであって、前記レンズは、主鎖もしくは側鎖にアリール基又は脂環式基を持つ熱可塑性樹脂組成物から構成される樹脂レンズであり、前記樹脂レンズは、ガラス転移温度Tgが115℃~150℃であり、光弾性係数の絶対値が10×10-12Pa-1以下であり、互いに反対側の第1の面および第2の面を有し、その一方の面に反射型偏光素子が貼合されてなる、反射型偏光素子貼合レンズである。【選択図】図1
Bibliography:Application Number: JP20230106488