JP6248085B2 - 超薄膜ライトユニット - Google Patents
超薄膜ライトユニット Download PDFInfo
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- JP6248085B2 JP6248085B2 JP2015225460A JP2015225460A JP6248085B2 JP 6248085 B2 JP6248085 B2 JP 6248085B2 JP 2015225460 A JP2015225460 A JP 2015225460A JP 2015225460 A JP2015225460 A JP 2015225460A JP 6248085 B2 JP6248085 B2 JP 6248085B2
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- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
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- G02B6/0033—Means for improving the coupling-out of light from the light guide
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Description
以下、図4ないし図12を参照して、本発明の第1の実施の形態による超薄膜ライトユニットについて詳細に説明する。特に、本発明の核心構成要素である超薄膜導光フィルムLGF及び光源LSとの相関関係について詳細に説明する。
本発明の第2の実施の形態による超薄膜ライトユニットは、一つのライトユニットにより、狭範囲視野角及び広範囲視野角を有するライトを具現化できる。すなわち、本発明の第2の実施の形態による超薄膜ライトユニットは、視野範囲の調節モード(狭範囲視野角)と一般的な光散乱モード(広範囲視野角)を選択的に具現するようにすることによって、ユーザの必要により視野範囲を調節できる超薄膜フィルム型ライトユニットを提供できる。
図15ないし図17を参照して、本発明の第3の実施の形態による超薄膜ライトユニットを説明する。図15ないし図17は、本発明の第3の実施の形態による超薄膜ライトユニットの側面図である。
図18を参照して、本発明の第4の実施の形態による超薄膜平板型表示装置を説明する。図18は、本発明の第4の実施の形態による超薄膜平板型表示装置を概略的に示した図である。
Claims (11)
- 一側に備えられた傾斜部と、前記傾斜部から他側に延びて一定厚を有する平板部が備えられた高屈折フィルムと、
前記傾斜部の上部において前記一側に第1幅を有する第2部材と、
前記平板部の上部において前記他側の中央部に前記第2部材と一定の距離が離隔される第1部材と、
前記平板部の上部において前記第1幅を有する第3部材と、
前記平板部の側面において前記第1部材と隣接して配置された光源と、を含み、
前記第1部材は、前記光源から前記平板部の前記側面に入射された入射光のうち、前記高屈折フィルムと前記第3部材の界面から全反射が起きる臨界角より小さな入射角を有する透過光を吸収し、
前記傾斜部は、前記光源から前記平板部の前記側面に入射された入射光のうち、前記臨界角より大きな入射角を有し前記高屈折フィルムの内部を全反射により進む発散光を、前記臨界角より小さな入射角を有し前記第2部材に入射するように反射角度を調整する傾斜角度を有し、
前記第2部材は、前記傾斜部により垂直方向に視準して前記第2部材に入射した前記発散光を垂直及び水平方向に視準した平行光に変換すると同時に、一定条件を有するように出光させるホログラムパターンを有し、
前記一定条件は、前記視準した平行光が前記傾斜部に向かって出光し、前記傾斜部により角度が調整されて再度反射された前記視準した平行光が前記高屈折フィルムを透過して、前記第3部材と空気間の界面から全反射が起きる条件であり、
前記第3部材は、前記傾斜部により再度反射された前記視準した平行光の一部を前記第3部材の外部に出光させるパターンを有する、超薄膜ライトユニット。 - 前記第1部材は、前記第3部材の上部に配置された請求項1に記載の超薄膜ライトユニット。
- 前記第3部材は、前記第2部材と前記第1部材との間に配置された請求項1に記載の超薄膜ライトユニット。
- 前記パターンは、ホログラムパターン、またはグレイティングパターンである、請求項1に記載の超薄膜ライトユニット。
- 一側に備えられた傾斜部と、前記傾斜部から他側に延長され、一定の厚さを有する平板部が備えられた高屈折フィルムと、
前記高屈折フィルムの上部面と対向して配置された低屈折フィルムと、
前記傾斜部の上部から前記一側に第1幅を有する第2部材と、
前記平板部の上部から前記他側の中央部に前記第2部材と一定距離離隔された第1部材と、
前記平板部の上部から前記第1幅を有する第3部材と、
前記平板部の側面から前記第1部材と隣接して配置された光源と、を含み、
前記第1部材は、前記光源から前記平板部の前記側面に入射された入射光のうち、前記高屈折フィルムと前記低屈折フィルムの界面で全反射が起こる臨界角より小さい入射角を有する透過光を吸収し、
前記傾斜部は、前記光源から前記平板部の前記側面に入射された入射光のうち、前記臨界角よりも大きな入射角を有し前記高屈折フィルムの内部を全反射により進行する発散光を、前記臨界角より小さい入射角を有し前記第2部材に入射するように反射角度を調整する傾斜角度を有し、
前記第2部材は、前記傾斜部によって垂直方向に照準されて前記第2部材に入射した前記発散光を垂直方向と水平方向に視準した平行光に変換するとともに、一定の条件を有するように出光させるホログラムパターンを有し、
前記一定の条件は、前記視準した平行光が前記傾斜部に向け出光し、前記傾斜部によって角度が調整されて再反射された前記視準された平行光が前記高屈折フィルムと、前記低屈折フィルムを透過して、前記第3部材と空気との間の界面で全反射が起こる条件であり、
前記第3部材は、前記傾斜部によって再反射された前記視準された平行光の一部を前記第3部材の外部に出光させるパターンを有する、超薄膜ライトユニット。 - 前記パターンは、ホログラムパターン、またはグレイティングパターンである、請求項5に記載の超薄膜ライトユニット。
- 前記高屈折フィルムの下部において前記第1部材と対向して配置された下部第1部材をさらに含む請求項1ないし5のうちのいずれか1項に記載の超薄膜ライトユニット。
- 前記平板部の前記側面から前記超薄膜ライトユニットの幅方向へ前記光源の両側に配置された光散乱モード用光源と、
前記高屈折フィルムの下部面に配置された下部低屈折フィルムと、
前記下部低屈折フィルムの下部面において前記平板部と対向して配置された第4部材と、をさらに含み、
前記下部低屈折フィルムの屈折率は、前記低屈折フィルムの屈折率より低く設定される、請求項5に記載の超薄膜ライトユニット。 - 前記平板部の前記側面から前記超薄膜ライトユニットの幅方向へ前記光源の両側に配置された光散乱モード用光源と、
前記高屈折フィルムの下部面に配置された下部低屈折フィルムと、
前記下部低屈折フィルムの下部面において前記平板部と対向して配置された第4部材と、をさらに含み、
前記下部低屈折フィルムの屈折率は、前記第2部材と前記第3部材の屈折率より低く設定される、請求項1に記載の超薄膜ライトユニット。 - 前記第4部材の下部に配置された反射フィルムをさらに含む請求項8または9に記載の超薄膜ライトユニット。
- 前記下部低屈折フィルムの下部面に配置された下部第1部材をさらに含み、前記下部第1部材は、前記光源から前記平板部の前記側面に入射された入射光のうち、前記高屈折フィルムと前記下部低屈折フィルムの界面から全反射が起きる臨界角より小さな入射角を有する透過光を吸収する、請求項8または9に記載の超薄膜ライトユニット。
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