Seiko Epson Corporation

Nobuo Shimizu

Hideto Yamashita

Shinichi Yotsuya

Koichi Akiyama

Masami Murata

Shunji Kamijima

Kazuhisa Mizusako

Akira Shinbo

Kazuto Yoshimura

Shinichi Kamisuki

Yasuto Nose

Makoto Ishii

A reflection-type screen which reflects projection light from a projector is provided. The screen includes a base one surface of which has a plurality of curved portions having concave or convex surfaces. Each of the curved portions of the base has a reflection area and a non-reflection area. A reflection film is formed on each of the reflection areas. An anti-reflection film is formed on each of the non-reflection areas. Each of the anti-reflection films has a plurality of transparent columnar components.

Reflection-type screen, projection system, front projection television system, and reflection-type screen manufacturing method

A method of manufacturing a member with concave portions includes preparing a base material, forming a mask formation film on the base material, forming a number of openings in the mask formation film by laser irradiation treatments using a branching filter, and etching the base material to form the concave portions in the base material. The branching filter branches laser light into first laser beams and second laser beams. Each of irradiation regions of the mask formation film sequentially is subjected to the laser irradiation treatment, so that first openings are formed by the first laser beams and second openings are formed by the second laser beams. Each of the irradiation regions has portions where no opening is formed by the first beams of the laser irradiation treatment for the irradiation region while openings will be formed by the second laser beams in one or more of the subsequent laser irradiation treatments. In the base material, concave portions for examination use are formed using some of the openings formed by the second laser beams used in the laser irradiation treatments for the specified irradiation regions.

Method of manufacturing member with concave portions, member with concave portions, lens substrate, transmission type screen and rear projection

A microlens substrate is provided having a plurality of first microlenses and a plurality of second microlenses which are located between the plurality of first microlenses. The second microlenses are smaller than the first microlenses.

Substrate with recess portion for microlens, microlens substrate, transmissive screen, rear type projector, and method of manufacturing substrate with recess portion for microlens

A screen includes a lens array having a plurality of spherical lens elements. A first length of the spherical lens elements, along a first direction at substantially a center of each of respective spherical lens elements, and a second length of the spherical lens elements, along a second direction at substantially the center of each of the respective lens elements and substantially orthogonal to the first direction, are set such that the second length is larger than the first length. A curvature center position of any one of the plurality of spherical lens elements is arranged to be at substantially a half of the first length along the first direction, with respect to a curvature center position of another spherical lens element adjacent to the lens element in the second direction.

Screen and projector with spherical lens array

A moldfor manufacturing a microlens substrateis disclosed. The microlens substrate is provided with a plurality of microlenses each having a predetermined convex shape. The mold is used to press a base material of the microlens substrate to form the plurality of microlenses thereon. The moldhas a roll shape having an outer peripheral surface, and a plurality of concave portionseach having a predetermined shape corresponding to the convex shape of each microlens are provided on the outer peripheral surface of the moldfor pressing the base material of the microlens substrate. In this case, the plurality of concave portionsare formed by means of an etching process with a mask.

Mold for manufacturing a microlens substrate, a method of manufacturing microlens substrate, a microlens substrate, a transmission screen, and a rear projection

An etching method is disclosed. The etching method includes the steps of: preparing a substrateforming first and second filmseach having predetermined internal stress on the substrate so that the internal stresses of the first and second filmsare canceled out or reduced with each other; forming a plurality of initial holesin the first and second filmsto form a maskand forming a plurality of concave portionsin the substrateat portions corresponding to the plurality of initial holesby subjecting the substrateto an etching process using the mask

Etching method, a substrate with a plurality of concave portions, a microlens substrate, a transmission screen and a rear projection

A method of manufacturing the lens substrate with straight light control portionsA that is provided with a plurality of convex lenses (microlenses)on a surface thereof and is used so that light enters the lens substrate from the side of the surface thereof on which the plurality of convex lensesare provided includes the steps of: preparing a substrate having a plurality of concave portions on one surface thereof; forming the plurality of convex lensesusing the substrate having the plurality of concave portions; and forming a straight light control portionin the vicinity of the apex of each of the plurality of convex lenses. The straight light control portionis used for controlling the ratio of straight light in the light entering each of the plurality of convex lenses

Method of manufacturing a lens substrate with straight light control portions, a lens substrate with straight light control portions, a transmission screen and a rear projection

A screen member for a transmission screen includes: a microlens substrate, a light incident face thereof being formed with a plurality of microlenses for condensing incident light; a black matrix formed on a light emission face of the microlens substrate, which has a plurality of openings on light paths of the light transmitted by the microlenses of the microlens substrate; and a plurality of light diffusion portions for diffusing the light transmitted by each microlens of the microlens substrate. Each microlens of the microlens substrate is designed so that the light transmitting each microlens is focused on the side of the light emission face of the microlens substrate beyond the black matrix. Further, each light diffusion portion is formed into a protrusion that protrudes from the surface of the black matrix.

Screen member for a transmission screen, a transmission screen and a rear projection

A screen member for a transmission screen is manufactured by a method including the steps: preparing a microlens substrate, of which the light incident face is formed with a plurality of microlenses; forming a black matrix from a first layer, made by applying a material including a positive photopolymer onto the light emission face of the microlens substrate, on the light emission face of the microlens substrate so that the black matrix has a plurality of openings on light paths of the light that has been transmitted by the microlenses of the microlens substrate; and forming a plurality of light diffusion portions for diffusing the light that has been transmitted by each microlens of the microlens substrate from a second layer, made by applying a material including a negative photopolymer onto the black matrix.

Method of manufacturing a screen member for a transmission screen, a screen member for a transmission screen, a transmission screen and a rear projection

A method of manufacturing a substratewith a plurality of concave portionsaccording to the invention includes the steps of forming a maskon the substrate, forming a plurality of initial holeson the maskby means of a physical method such as blast processing or irradiation with laser beams, and forming the plurality of concave portions in the substrateby subjecting the maskwith the plurality of initial holesto an etching process. In case of carrying out the blast processing, glass beads whose average diameter is in the range of 50 to 100 &#x3bc;m are used as blast media.

Method of manufacturing a substrate with concave portions, a substrate with concave portions, a substrate with concave portions for microlenses, a microlens substrate, a transmission screen and a rear projector

To provide a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrateA includes a first substratewith concaves for microlenses having a plurality of first concavesand first aligment marksformed on a first glass substrate, a second substratewith concaves for microlenses having a plurality of second concavesand second aligment marksformed on a second glass substrate, a resin layer, microlensesconsisting of doulbe convex lenses formed of a resin filled in between the first and second concavesand, and spacers

Projection display device having micro-lenses

To provide a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrateA includes a first substratewith concaves for microlenses having a plurality of first concavesand first aligment marksformed on a first glass substrate, a second substratewith concaves for microlenses having a plurality of second concavesand second aligment marksformed on a second glass substrate, a resin layer, microlensesconsisting of double convex lenses formed of a resin filled in between the first and second concavesand, and spacers

System and method for providing a substrate having micro-lenses

The present invention provides a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrate includes a first substrate with concaves for microlenses having a plurality of first concaves and first alignment marks formed on a first glass substrate, a second substrate with concaves for microlenses having a plurality of second concaves and second alignment marks formed on a second glass substrate, a resin layer, microlenses comprised of double convex lenses formed of a resin filled in between the first and second concaves, and spacers.

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Suwa, Japan

Nobuo Shimizu