公开(公告)号：US20250044676A1

公开(公告)日：2025-02-06

申请号：US18708478

申请日：2022-11-08

Applicant: LINTEC CORPORATION

Inventor： Akihira WATANABE

IPC: G03B21/62 ,  G02B1/14 ,  G02B5/02

Abstract: Provided is a hard coat film (1) for a projection screen, comprising: a base material film (11); and a hard coat layer (12) formed on one surface side of the base material film, wherein the total luminous haze value is 1% or more and 60% or less, and the ratio of a maximum haze value to a minimum haze value in a wavelength region of 400 nm to 700 nm is less than 7. According to the hard coat film (1) for a projection screen, it is possible to achieve both the visibility when a projector is turned on and the background visibility when the projector is turned off, and reduce color tone change.

公开(公告)号：US20250036018A1

公开(公告)日：2025-01-30

申请号：US18705058

申请日：2022-10-31

Applicant: LINTEC CORPORATION

Inventor： Akihira WATANABE ,  Kentaro KUSAMA

IPC: G03B21/62

Abstract: Provided is a projection screen used by being attached to an optically transparent adherend. The projection screen includes a transparent base material and a pressure sensitive adhesive layer. The luminance at frontal 0° on the transparent base material side as measured using transmitted light from a white light source of 1100 cd/m2 is 10 cd/m2 or more and 400 cd/m2 or less. The luminance ratio of a luminance at diagonal 45° on the transparent base material side as measured using transmitted light from a white light source of 1100 cd/m2 with respect to the luminance at frontal 0° is 0.5 or more. According to the projection screen, it is possible to achieve both the background visibility when the projector is turned off and the frontal and diagonal visibility when the projector is turned on.

公开(公告)号：US20220269356A1

公开(公告)日：2022-08-25

申请号：US17670995

申请日：2022-02-14

Applicant: LINTEC CORPORATION

Inventor： Akihira WATANABE ,  Minami NAKANISHI ,  Hiroki HOSHINO

IPC: G06F3/039 ,  G06F3/0354

Abstract: A writing feel improving sheet comprising a base material and a writing feel improving layer with which a touch pen is brought into contact, wherein the writing feel improving layer contains an antiviral agent, and a number of peaks with an amplitude of 1.5 or more in a frequency range of 1 to 2 Hz is 3 or more and 20 or less.