A high-haze anti-glare film is disclosed. The high-haze anti-glare film comprises a transparent substrate and an anti-glare layer on the substrate. The anti-glare layer comprises acrylate binder resin and amorphous silica microparticles. The total haze (Ht) of the anti-glare film is more than 20%, and the total haze is the sum of the surface haze (Hs) and the inner haze (Hi) of the anti-glare film, and the inner haze (Hi) and the total haze (Ht) satisfy the relation 0.01<Hi/Ht<0.25. The present high-haze anti-glare film provides high anti-glare and anti-sparkling properties.

An optical sensor comprising a substrate, a silicon layer having an optical sensor, light block material covering at least portions of said silicon layer and the substrate, defining a light pipe aperture above the optical sensor; and an optical layer positioned within the light pipe aperture. In some embodiments, the light pipe aperture is at least partially filled with a light transmissive material.

A compact projector for use in a head-mounted display device consists of an illumination section, a relay section, and a numerical aperture expander (NAE). The illumination section includes one or more illumination sources, a scanner, and a focusing lens which converges light onto an image plane. The NAE receives light from the illumination section, expands the average numerical aperture of the light, and transmits the light to the relay section. The relay section includes optical elements which collimate light from the image plane onto an exit pupil. The projector may also be fitted with lateral-axis and/or vertical-axis stops which prevent stray light from passing through the exit pupil.

Provided is a decorative molded article that uniformizes the brightness of an uneven surface and inhibits whitening. The decorative molded article is provided with a protective layer having an uneven surface on an adherend, and satisfying the following requirement 1-1: <Requirement 1-1> A black plate is stuck to the surface of the article on the adherend side thereof via a transparent pressure-sensitive adhesive layer to prepare a sample A. A visible light inclined by 10 degrees from the normal direction of the sample A is made to run into the uneven surface, and based on the specular direction of the incident light as a reference angle, a luminous reflectance is measured every 0.2 degrees within a range of the reference angle±5.0 degrees.

A display apparatus and a display system are provided, and relate to the field of display device technologies, to enhance visual experience generated when a picture is displayed by using an existing reflective display window such as a windshield and a bathroom mirror, so that a sense of presence and immersion is improved. The display apparatus includes an image generation unit and an optical imaging unit. The image generation unit is configured to generate a real image whose display surface is a curved surface. The optical imaging unit is configured to perform imaging on the real image, to generate an enlarged virtual image corresponding to the real image, where a display surface of the virtual image is a curved surface adaptive to the display surface of the real image.

A light emitting diode display panel may comprise a substrate, a plurality of light emitting diodes located over the substrate, and an optical assembly located over the plurality of light emitting diodes. The optical assembly may include a lens array and a diffuser. An inner surface of the lens array may define a plurality of inner curves.

A wavelength conversion element configured to receive an excitation light beam includes: a substrate configured to rotate about a central axis including a wavelength conversion region and a non-wavelength conversion region; and at least one wavelength conversion layer. When the substrate is rotated about the central axis, the non-wavelength conversion region and the wavelength conversion region alternately enter a transmission path of the excitation light beam. The substrate has a recessed portion located inside or outside of and surrounding the wavelength conversion region. The recessed portion includes an inclined surface. When the excitation light beam is incident on the inclined surface, the inclined surface reflects the excitation light beam to the wavelength conversion layer, and the wavelength conversion layer converts the excitation light beam into a converted beam. When the excitation light beam is incident on the non-wavelength conversion region, the non-wavelength conversion region reflects the excitation light beam.

A diffusion lens includes a concave first lens surface, a convex second lens surface such that part of light incident on the first lens surface is output from the second lens surface, a side surface extending from a periphery of the second lens surface in a vertical direction of the diffusion lens such that part of the rest of the light incident on the first lens surface is output from the side surface, and a bottom surface extending from a periphery of the first lens surface in a horizontal direction of the diffusion lens to meet a periphery of the side surface. Rates of change of the first and second lens surfaces have the same sign. A pattern is formed on the side surface and the bottom surface to diffuse the light through the side surface and diffuse the light reflected by the bottom surface.

A telecentric optical apparatus that is capable of suppressing an increase in the number of components as well as achieving high precision optical axis alignment, is provided. The telecentric optical apparatus of the present invention is characterized in that it is provided with: a first telecentric lens surface that is provided on an object side; a second telecentric lens surface that is provided on an image side and that shares a focus position with the first telecentric lens surface; and an optical path trimming part that is provided, between the first telecentric lens surface and the second telecentric lens surface, in an outside region, which is located on a side further out than a light passing region having a center thereof located at the focus position, and that changes an optical path such that a light beam incident on the outside region is prevented from contributing to image formation.

The application is directed to a device housing. The device housing includes a first light device, the first light device including a first electrical supply configured to provide an electrical signal to a first light emitting diode (LED), the first LED separated from a first surface of a diffuser film by a space, wherein the diffuser film includes a second surface, opposite the first surface, the second surface configured to contact a first light pipe.