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    • 1. 发明授权
    • Liquid crystal optical element and a laser projection apparatus using
polymer dispersed liquid crystal
    • 液晶光学元件和使用聚合物分散液晶的激光投射装置
    • US5331446A
    • 1994-07-19
    • US74407
    • 1993-06-10
    • Yoshinori HiraiHiroshi KumaiTakehiko NishiyamaSatoshi NiiyamaTsuneo Wakabayashi
    • Yoshinori HiraiHiroshi KumaiTakehiko NishiyamaSatoshi NiiyamaTsuneo Wakabayashi
    • G02F1/1334G02F1/137G02F1/13G02F1/37
    • G02F1/1334G02F2001/13756
    • A laser projection apparatus including a liquid crystal optical element of a transparent and scattering type having a liquid crystal and solidified matrix composite. A laser beam having a wavelength of approximately 1 .mu.m emitted from a laser beam source is supplied to the liquid crystal optical element, and a projection optical system operates for reduction-projection a laser beam emitted from the liquid crystal optical element onto an object. Further, with respect to a certain pixel of the liquid crystal optical element, there are overlapped portions between lead lines of a common electrode and lead lines of a segment electrode in the vicinity of the pixel, a width W.sub.1 (.mu.m) of the overlapped portion, a reduction projection ratio (projection by 1/N) and a gap d(.mu.m) between electrodes of the liquid crystal optical element satisfy the relation, W.sub.1 +d
    • 一种激光投射装置,包括具有液晶和固化基质复合体的透明散射型液晶光学元件。 将从激光源发射的具有约1μm的波长的激光束提供给液晶光学元件,并且投影光学系统用于将从液晶光学元件发射的激光束还原到物体上。 此外,对于液晶光学元件的某个像素,在像素附近,公共电极的引线与段电极的引线之间存在重叠的部分,重叠的宽度W1(μm) 部分,液晶光学元件的电极之间的缩小投影比(投影1 / N)和间隙d(μm)满足关系式W1 + d <10×N。 此外,所用液晶的折射率各向异性DELTA n为0.18以上,粘度eta(cSt)为60以下,折射率平均值DELTA n,平均粒径R(μm) 分散并保持在固化基质中的液晶,电极之间的间隙d(μm)满足以下关系:(1)0.5 <ΔTAnxR <1.3,(2)3.5 <ΔDTAnxd <8.0。 采用复用驱动来驱动液晶光学元件。
    • 3. 发明授权
    • Projection type color liquid crystal optical apparatus
    • 投影型彩色液晶光学装置
    • US5754260A
    • 1998-05-19
    • US810984
    • 1997-02-27
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • H04N9/31G02F1/1335
    • H04N9/315H04N9/3105
    • A light source optical system for projection 1, dichroic mirrors 21, 22 disposed to have a predetermined included angle .beta., a reflection type liquid crystal optical element blocks 31-33 each including a closely contacted converging lens and having a reflection surface and a projection optical system 4 are provided, wherein the normal line of a dichroic mirror surface and the optical axis of incident light form an included angle .alpha.; the normal line of the reflection surface and the optical axis of incident light form an included angle .gamma.; light emitted from a light source is color-separated so as to become color lights; the color lights are rendered to be parallel light beams, and are modulated and reflected by means of the reflection type liquid crystal optical elements; the reflected light beams are color-synthesized; and the color-synthesized light is projected through a projection lens. A projection type color liquid crystal optical apparatus having a compact shape and a high brightness is obtainable.
    • 用于突起1的光源光学系统,设置成具有预定夹角β的分色镜21,22,每个包括紧密接合的会聚透镜并具有反射表面的反射型液晶光学元件块31-33和具有反射面的投影光学 系统4,其中分色镜表面的法线和入射光的光轴形成夹角α; 反射面的法线和入射光的光轴形成夹角γ; 从光源发出的光被颜色分离,成为色光; 彩色光成为平行光束,通过反射型液晶光学元件进行调制和反射; 反射光束被彩色合成; 并且通过投影透镜投射彩色合成光。 可以获得具有紧凑形状和高亮度的投影型彩色液晶光学装置。
    • 4. 发明授权
    • Projection type color liquid crystal optical apparatus
    • 投影型彩色液晶光学装置
    • US5648860A
    • 1997-07-15
    • US198275
    • 1994-02-18
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • H04N9/31G02F1/1335
    • H04N9/315H04N9/3105
    • A light source optical system for projection 1, dichroic mirrors 21, 22 disposed to have a predetermined included angle .beta., a reflection type liquid crystal optical element blocks 31-33 each including a closely contacted converging lens and having a reflection surface and a projection optical system 4 are provided, wherein the normal line of a dichroic mirror surface and the optical axis of incident light form an included angle .alpha.; the normal line of the reflection surface and the optical axis of incident light form an included angle .gamma.; light emitted from a light source is color-separated so as to become color lights; the color lights are rendered to be parallel light beams, and are modulated and reflected by means of the reflection type liquid crystal optical elements; the reflected light beams are color-synthesized; and the color-synthesized light is projected through a projection lens. A projection type color liquid crystal optical apparatus having a compact shape and a high brightness is obtainable.
    • 用于突起1的光源光学系统,设置成具有预定夹角β的分色镜21,22,每个包括紧密接合的会聚透镜并具有反射表面的反射型液晶光学元件块31-33和具有反射面的投影光学 系统4,其中分色镜表面的法线和入射光的光轴形成夹角α; 反射面的法线和入射光的光轴形成夹角γ; 从光源发出的光被颜色分离,成为色光; 彩色光成为平行光束,通过反射型液晶光学元件进行调制和反射; 反射光束被彩色合成; 并且通过投影透镜投射彩色合成光。 可以获得具有紧凑形状和高亮度的投影型彩色液晶光学装置。