OPTICAL ELEMENT MANUFACTURING METHOD, OPTICAL ELEMENT, OPTICAL APPARATUS AND IMAGING APPARATUS

To sufficiently harden adhesive even when a cemented lens formed by using two transparent substrates with high refractive index is produced.SOLUTION: A first transparent substrate 11 having refractive index of 1.80 or more by d-ray and a second transparent substrate 12 having refractive index of 1.80 or more by d-ray are prepared. Adhesive 13a containing optical hardening resin and photoinitiator having absorption edge wavelength of 410 nm or more are applied to the first transparent substrate 11 and/or the second transparent substrate 12. The adhesive 13a is irradiated through the second transparent substrate 12 with light of wavelength of 400 nm or more to harden the adhesive 13a. Thereby the first transparent substrate 11 and the second transparent substrate 12 are bonded to one another to produce an optical element 10.SELECTED DRAWING: Figure 3 【課題】屈折率が高い２枚の透明基材を用いた接合レンズを製造しようとすると、接着剤を十分に硬化させることができなかった。【解決手段】ｄ線の屈折率が１．８０以上である第１透明基材１１と、ｄ線の屈折率が１．８０以上である第２透明基材１２と、を用意する。第１透明基材１１および／又は第２透明基材１２に、光硬化性樹脂と吸収端波長が４１０ｎｍ以上の光重合開始剤と、を含有する接着剤１３ａを塗布する。第２透明基材１２を介して、接着剤１３ａに波長が４００ｎｍ以上の光を照射し、接着剤１３ａを硬化させ、第１透明基材１１と第２透明基材１２とを接合し、光学素子１０を製造する。【選択図】図３