| 摘要 |
PURPOSE:To adjust body light and reference light on a BSO so that the body light forms the hologram of the body without fail, by providing a light shielding block, which shields the reference light, a light-path converting mirror for adjusting the body light and a projecting screen for adjusting the body light. CONSTITUTION:A supporting post 25 with a guide 25 is positioned at a lower place. Reference light is shielded by a block 21. When body light 13 is reflected by a body to be measured 19 and transmitted through a BSO15, the light is reflected by a light-path converting mirror 22 and the image of the BSO is projected on a projecting screen 23. When the body light is not applied to the BSO15, the image of the BSO15 is not projected on the projecting screen 23. When the projecting screen 23 is observed from the back side, the deviation of the light path of the body light 13 in this optical apparatus can be determined. The relative positions of the optical apparatus and the body to be measured 19 is adjusted in the direction so that the deviation is made small. Thus the body light 13 can be made to input in the BSO15 without fail. The body light and the reference light can be adjusted on the BSO so that the hologram of the body 13, whose image is reflected, is formed without fail. |
