The curvature and location of the diffusing surface within the enclosure is adjustable.

Luminance measurements shall be made on a diffuse colourless surface with known diffuse reflection factor [1].

Luminance measurements shall be made on a diffuse colourless surface with known diffuse reflection factor [5].

A source of light is positioned for direction into the horse's eye by the diffusingsurface.

The speckle reduction diffusing surface is selectively introduced into an optical path at the first focused point.

The light source and diffusing surface are configured such that the light directed into the horse's eye is blue.

The diffuse colourless surface shall have the dimensions of the registration plate or the dimension exceeding one measuring point. Its centre shall be placed in the centre of the positions of the measuring points.

The diffuse colourless surface shall have the dimensions of the registration plate or the dimension exceeding one measuring point. Its centre shall be placed in the centre of the positions of the measuring points.

The optical collimating component images the first focused point at a second focused point at the projection surface when the speckle reduction diffusing surface is in the optical path.

A method and apparatus (2) for inspecting the surface quality of automotive parts (38) having smooth surfaces (44) utilizes a light source (4) and diffusing surface (6) contained in an opaque enclosure (8).

The diffusing surface has a convex shape and is arranged relative to the light source to direct a gradient of light through the aperture (10) in the form of a beam.

A laser projection system includes a light source, an optical scanning component, a focusing component, a speckle reduction diffusing surface, and an optical collimating component.

This diffuse colourless surface(s) shall be placed in the position normally occupied by the registration plate and 2 mm in front of its holder.

This diffuse colourless surface(s) shall be placed in the position normally occupied by the registration plate and 2 mm in front of its holder.

This method employs a three-dimensional machining device provided with a ball-end mill to produce a die for an optical element that has a lens and a diffusing surface for diffusing light.