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Lms Co., Ltd.

Woo Joo Lah

Min Soo Lee

Ho Seong Na

Yong Won Choi

An optical film for efficiently and uniformly diffuses and collects the light from mini LEDs or micro LEDs, the bead diffusion layer and the pattern diffusion layer of the first diffusion sheet are formed such that a first diffusion rate of the light on the one surface of the first diffusion sheet is higher than a second diffusion rate of the light on the other surface of the first diffusion sheet.

Optical film for mini LED or micro LED backlight unit

An optical filter and an imaging device comprising the optical filter are provided. The optical filet comprises: a binder resin; a light absorption containing at least two kinds of light absorbents dispersed in the binder resin; and a near-infrared reflection layer. Further, the light absorbents comprise a first light absorbent having maximum absorption in a wavelength range of 680 to 700 nm and a second light absorbent having maximum absorption in a wavelength range of 700 to 750 nm, a wavelength at which the near-infrared reflection layer has a transmittance of 50% with regard to light incident in a direction perpendicular to the optical filter is in a range of 680 to 730 nm, and the optical filter satisfies [Equation 1] &#x394;E*&#x2264;1.5, wherein &#x394;E* represents a color difference between light, which has been incident in a direction perpendicular to the optical filter and has passed through the optical filter, and light, which has been incident at an angle of 30&#xb0; with regard to the direction perpendicular to the optical filter and has passed through the optical filter.

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Yongin-si, South Korea

Woo Joo Lah