A system for delivering light from a light source to a digital micro-mirror device. The system includes one or more lens groups. At least one lens of the system is laterally displaced, so that its optical axis is not centered on the chief ray of the system.
G02B 27/18 - Optical systems or apparatus not provided for by any of the groups , for optical projection, e.g. combination of mirror and condenser and objective
G02B 11/04 - Optical objectives characterised by the total number of simple and compound lenses forming the objective and their arrangement having two lenses only arranged C C
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
2.
ROTARY SWITCH OR OTHER ENCODER HAVING NON-SEQUENTIAL UNIQUE BIT PATTERN AND METHOD FOR DESIGN
An apparatus (100) for rotary encoding includes a knob (102) configured to be rotated. The apparatus also includes multiple switches (304, 402) each configured to selectively form or not form a connection based on a current rotational position of the knob. The apparatus further includes a controller (312) configured to generate or use a digital value associated with the current rotational position of the knob. The digital value is defined by which switches have or have not formed connections. Locations where the switches form the connections are selected such that the digital values uniquely identify different rotational positions of the knob and are non-sequential as the knob is rotated.
G01D 5/00 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
G01D 5/252 - Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels
G01D 5/32 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light
G05G 1/08 - Controlling members for hand-actuation by rotary movement, e.g. hand wheels
3.
LOW POWER INDICATOR CIRCUIT FOR OPTICAL SCOPES AND OTHER DEVICES
An apparatus includes one or more LEDs (304) configured to be coupled to a power supply (302) and to generate illumination, such as to generate a reticle (200) in an optical scope (104). The apparatus also includes a first switch (316) coupled in series with the one or more LEDs. The first switch is configured to selectively activate and deactivate the one or more LEDs based on whether the first switch is turned on or off. The apparatus further includes a low power detector (308) configured to sense a low power condition of the power supply and to repeatedly turn the first switch on and off in response to the low power condition to cause the one or more LEDs to blink. The low power detector is configured to turn the first switch on and off at a given rate, and the given rate increases as the power supply is depleted.
F41G 1/34 - Night sights, e.g. luminescent combined with light source, e.g. spot light
F41G 1/473 - Sighting devices for particular applications for lead-indicating or range-finding, e.g. for use with rifles or shotguns
F41G 11/00 - WEAPON SIGHTS; AIMING - Details of sighting or aiming apparatus; Accessories
G02B 23/00 - Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
G02B 27/34 - Fiducial marks or measuring scales within the optical system illuminated
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
patents
