초록 ▼

Submarine photography apparatus includes a camera to record scenes in a selected sector forward thereof; a source of light having a wavelength in the range between about 650 and 700 nm. designed to project from a position lateral of the camera a conical light beam so that it intersects the sector; a

Submarine photography apparatus includes a camera to record scenes in a selected sector forward thereof; a source of light having a wavelength in the range between about 650 and 700 nm. designed to project from a position lateral of the camera a conical light beam so that it intersects the sector; and a system of optical and electronic elements to detect and measure the intensity of reflected light from a photographic subject within a conical volume that has its apex lateral of the camera and extends toward the sector to intersect the light beam so that the intersecting peripheries of the light beam and the conical volume substantially define the sector. Methods of photographing with the apparatus include flashing a strobe light and exposing the camera when the system measures an intensity of the reflected light above a predetermined minimum value within the sector.

대표청구항 ▼

Apparatus for submarine optical recording comprising: a camera to record scenes in a predetermined sector forward thereof, a source of light having a wavelength in the range between about 650 and 700 nm. provided with first optical means to project a divergent conical light beam from said source, me

Apparatus for submarine optical recording comprising: a camera to record scenes in a predetermined sector forward thereof, a source of light having a wavelength in the range between about 650 and 700 nm. provided with first optical means to project a divergent conical light beam from said source, means locating said first optical means spaced apart radially from said source to project said light beam so that it intersects said predetermined sector, receiver means to detect and measure the intensity of light in said wavelength range provided with second optical means to view a conical volume, means locating said second optical means spaced apart radially from said camera so said conical volume intersects said light beam and the intersecting peripheries of said light beam and said conical volume substantially define said predetermined sector, and signal means that is activated by said receiver means when it measures an intensity of light in said wavelength range above a predetermined minimum value.