| 摘要 |
FIELD: instrument making. ^ SUBSTANCE: invention is related to the field of inspection technology, in particular to instruments for monitoring of television system parametres. Device comprises the following components installed serially on optical axis - lens (1) and holder (2) for placement of test-object (3), and also accent light system (4). Lens (1) is installed with the possibility of displacement along its optical axis and is equipped with counting device (5). Accent light system (4) includes at least two blocks of lamps (6), which are symmetrically installed relative to optical axis of lens (1) with the possibility of block-wise connection of lamps. At least between one of lamps (7, 8, 9) of accent light system (4) and holder (2) for installation of test-object (3), the following components are installed serially - diffuser (10) and the first attenuator (11) of light radiation at axis that connects centre of holder (2) for installation of test object (3) and centre of lamp glowing body (8). Lens (1), holder (2) for installation of test object (3) and accent light system (4) are installed inside light impermeable body (12), which has opening for withdrawal of holder (2) for installation of test object (3) outside the limits of body (12) for replacement of test object (3). ^ EFFECT: expansion of instrument functional resources by provision of possibility to create wide range of rated values of illumination in plane of test object and possibility of simple manufacturing and installation of replaceable test-objects with different patterns. ^ 7 cl, 1 dwg |
