An optical measuring device includes a light source, an optical sensing module, a positioning frame, a carrier, and a linking device. The optical sensing module includes a plurality of optical sensors. The light source and the optical sensing module are relatively disposed on the positioning frame. The carrier includes a plurality of hole rows, and the hole rows are arranged along a predetermined direction. Each of the hole rows includes a plurality of containing concaves for containing a measured object. The linking device is connected to the positioning frame and for driving the light source and the optical sensing module to move along the predetermined direction. The light source emits a light toward a side of the carrier, the light passes through the containing concaves to form a plurality of measured lights, and each of the optical sensors receives each of the measured lights.

A system and method is disclosed for imaging and scanning a plurality of plants to capture information related to plant performance. Plants move through the system on a conveyor belt in specialized plant container pot holders.

A measuring apparatus includes an illuminator including a light source to emit light onto an object being conveyed in a conveyance direction; a first diffuser plate; a second diffuser plate between the first diffuser plate and the object; a light shield portion between the second diffuser plate and the object; and a light receiver to receive light specularly reflected from the object illuminated by the illuminator. The light shield portion has an opening that includes an optical axis of light emitted from the light source and reaching the second diffuser plate.