Abstract: A display apparatus includes a housing and at least one mirror. The housing can be detachably mounted on a display and includes an entrance that allows light emitted from the display to enter the interior of the housing with the housing mounted on the display and an exit that allows the light having entered the interior of the housing through the entrance to exit to the exterior of the housing. The at least one mirror reflects the light having entered the interior of the housing through the entrance to the exit.

Abstract: A protein crystal detecting method for detecting a protein crystal in protein solution held in a crystallizing container, wherein layer images are obtained by imaging cross sections of a protein solution, a crystal feature image for each layer is created by extracting a feature portion of a protein crystal from the layer images, judgment parameters such as a representative number of pixels representing the number of pixels of the layer image showing the largest feature portions, a representative average number of pixels for each label, and a layer-to-layer rate.

Abstract: The present invention is intended to provide an apparatus for screening protein crystallization conditions that can screen protein crystallization conditions efficiently by the vapor diffusion method using the sitting drop technique.

Abstract: It is an object of the present invention to provide a protein crystal detection method, protein crystal detection apparatus, and protein crystal detection program with which protein crystals can be efficiently detected at a high reliability. To detect protein crystals with the present invention, an observed image obtained by observing a protein solution during crystallization by the vapor diffusion method is differentiated to give a differentiated image constituted by brightness change information indicating how much brightness has changed. Noise then is eliminated from this differentiated image, after which the differentiated image is binarized at a threshold for extracting a characterizing portion, which gives a binarized image in which the portion exhibiting a large change in brightness is left behind as the characterizing portion. Crystallization is evaluated by determining whether or not there are protein crystals from this characterizing portion of the binarized image.