Abstract: A head lamp (3) is turned off when a first set time (T1) has lapsed in a state that a circumferential illumination intensity (B) is equal to or higher than a first level (B1), or when the vehicle has run a first set distance (L1) in a state that the circumferential illumination intensity (B) is equal to or higher than a second level (B2) lower than the first level (B1). Accordingly, even if the vehicle is stopped immediately after a moving to a bright place from a dark place, or even if the peripheral environment has become bright during a stop in the dark place, the head lamp (3) can be securely turned off.

Abstract: A system generates a signal to activate the brake lights of a motor vehicle. An accelerator pedal position change parameter is determined, which represents the variation over time of the accelerator pedal that can be actuated by the driver. This accelerator pedal position change parameter is compared with at least one predefinable threshold value. The signal for activating the brake lights is then generated as a function of this comparison. The threshold value is predefined as a function of at least one stability/safety parameter, which represents the instantaneous driving stability of the vehicle and/or the instantaneous driving safety of the vehicle. The method and the device provide an improved means to warn the trailing vehicles of an impending hazard (for example, an obstacle, skidding of the vehicle or a slippery road surface) via the brake lights in a timely and reliable manner.

Abstract: A novel vehicle lighting control circuit for reducing the light intensity of a vehicle lighting element via pulse width modulation. A pulse width modulation adjuster is provided for producing a pulse width modulation control signal in order to operate the vehicle lighting element at a reduced light intensity. Such examples for use of the present invention include, but are not limited to, operation of: high beams at a low beam light intensity; daytime running lamps (DRLs); power balancing functions; and emergency lights.

Abstract: Continuously variable headlamps offer greater flexibility for roadway illumination but offer challenges in automatic control design. Each continuously variable headlamp has an effective illumination range varied by changing at least one parameter from a set including horizontal direction aimed, vertical direction aimed, and intensity emitted. A system for automatically controlling continuously variable headlamps on a controlled vehicle includes an imaging system capable of determining lateral and elevational locations of headlamps from oncoming vehicles and tail lamps from leading vehicles. The system also includes a control unit that can acquire an image from in front of the controlled vehicle. The image covers a glare area including points at which drivers of oncoming and leading vehicles would perceive the headlamps to cause excessive glare. The image is processed to determine if at least one oncoming or leading is within the glare area.

Abstract: A lighting device in which the vehicle advancing direction at which a driver aims is predicted, and the irradiating direction and irradiating range of a lighting device are controlled by comparing the result of the prediction to the information of the profile of a road on which the vehicle is running at present. The lighting device (1) includes a road profile calculating device (2) for finding an advancing direction of the vehicle in the case where the vehicle advances along a road on which the vehicle is running at present, in accordance with the map information including the road profile and the present position information of the vehicle; and a vehicle advancing direction predicting device (3) for predicting an advancing direction of the vehicle intended by a driver, by an operation signal given by the driver or detection information of the vehicle running state.

Abstract: An apparatus and method for providing an automated back-up alarm on a mobile machine including a back-up detector to detect enablement of rearward motion by the mobile machine, a visual indicator, an audible indicator, and a controller. The apparatus detects enablement of rearward motion by the mobile machine and a parameter representative of ambient light, and responsively activates one of the visual indicator and the audible indicator as a function of the mobile machine being enabled to move in a rearward direction and the parameter representative of ambient light.

Abstract: An automotive safety system that will automatically activate hazard warning lights under circumstances of hard braking or sudden stoppage. The system incorporates an accelerometer which measures the longitudinal acceleration of the vehicle and a microcontroller which processes the acceleration readings. When a series of deceleration values in excess of a predetermined threshold is detected, the microcontroller transmits an activation signal and the hazard warning lights are activated to warn other motorists. The hazard lights, when activated, remain active until they are either manually reset by the vehicle operator or automatically reset by the microcontroller when it detects a series of positive acceleration values consistent with normal vehicle operation. The hazard warning lights of this system are activated independently of the brake lights such that, in an accident situation, the hazard lights will activate even if the vehicle operator has not pressed the brake pedal.

Abstract: An intelligent strobe system for vehicle applications includes strobe modules connected between the positive and negative DC power rails of the vehicle. One of the strobe modules includes a transmitter circuit for generating sinusoidal data and transmitting the data over the DC power rails. Other strobe modules include a receiver circuit to receive and decode the sinusoidal data to control the flash sequence.

Abstract: A taillight fixture for a motor vehicle has at least one light window and a light arrangement with lights, including a brake light, a turn signal light, and a taillight, arranged behind the light window. Light beams emitted by the light arrangement pass through the light window to the exterior. At least one first light-sensitive sensor is positioned in the area of the light window. A control device is provided and the at least one first sensor is connected thereto. At least one of the lights of the light arrangement is connected to the control device, and the control device controls the luminocity of at least one light based on signals received from the first sensor.

Abstract: A new Auto Light Sensor System for automatically controlling a vehicle's parking lights and headlights according to light conditions outside of the vehicle. The inventive device includes a first light sensor secured to the vehicle and electrically connected to the parking lights, and a second light sensor secured to the vehicle and electrically connected to the headlights.

Abstract: According to the present invention, a lighting control circuit is provided in which various logic gates, transistors and other smaller-scale circuit elements are combined. The circuit receives as inputs the control signals from the vehicle, including the left and right indicator signals, the brake signal and the tail light signal. Each of these signals is fed into a first bank of logic gates whose outputs are supplied to a second bank of logic gates, whose output is in turn supplied to two transistors, each connected to a separate single filament bulb, one for the left side of the vehicle and the other for the right side.

Abstract: An apparatus for controlling light distribution of a vehicle head lamp has a first calculating means for estimating a driver's view position, a second calculating means for estimating a deviation angle formed by a running direction of the vehicle and a direction of the driver's view position, control means for controlling the light distribution composed of beam orientation, beam spread and upper bright-dark limit, said control means further comprising control-lamp selecting means which selects a high-beam head lamp or a low-beam head lamp corresponding to the result of the first calculating means.The first calculating means estimates a driver's view position which is determined by the distance reached by the vehicle after an estimated time along a forward roadway, which accounts for the driver's abilities.The second calculating means provides the deviation angle formed between the running direction of the vehicle and the direction of the driver's line of view.

Abstract: A tail light assembly for a motor vehicle, including a rear light, a brake light, and a turn signal light, wherein at least one of the rear light, the brake light, and the turn signal light is comprised of LEDs, has a control device for operating the LEDs at a constant current for a given voltage range.

Abstract: A substantially rectangular housing includes a broad planar face which includes a stenciled warning therein, such as "SLOW DOWN". A colored, transparent plate is disposed immediately behind the face. A strobe light and at least one lamp are contained within the housing behind the face and the plate. A circuit within the housing is adapted to be electrically connected in a known manner to the brake system of an automobile. The brake light is adapted for connection to an automobile. The circuit is configured in a known manner to activate the lamp in a steady manner when a driver applies the brakes of the automobile, as indicated through the brake system. If the brakes remain applied for a first pre-determined time period, for example 2 seconds, the strobe light will activate in a flashing manner. The strobe light will deactivate after a second pre-determined time period, for example 4 seconds. If at any time the brakes are released, both the strobe light and the lamp will be deactivated.

Abstract: The present invention is a front mounted, combination brake/signal/turn signal light. In one embodiment, an assembly with three light chambers is provided. The light in one chamber is connected to the ignition and brake circuits of the vehicle. Connection is made so that this first light lights when the vehicle is operating and goes out when the brakes are applied. The light in the second chamber is connected to the brake circuit of the vehicle. This second light is lighted whenever the brakes are applied. The light in the third chamber is connected to the turn signal circuit of the vehicle. The preferred colors are blue for the stop signal, white or clear for the daytime running lights and amber for the turn signal. Thus the assembly provides a visual signal that is white whenever the vehicle is in operation, changes from white to blue when the brakes are applied, changes from blue back to white again when the use of brakes is terminated and in addition flashes amber when the vehicle is turning.

Abstract: This invention includes a sensor, a time delay trigger circuit, and a power source. The sensor monitors an ambient light level and produces a sensed signal related to the ambient light level. The time delay trigger circuit is in electrical communication with the sensor for determining whether the ambient light level remains reduced below a predetermined level for a specified time. The time delay trigger circuit includes a counter/timer circuit, a comparator circuit, a timing gate circuit, and an output driver. The counter/timer circuit receives the sensed signal from the sensor and initiates a count sequence when the ambient light level is below a predetermined level. The counter/timer circuit provides a count value output representing elapsed time. The comparator circuit includes a plurality of switches used to set the specified time delay. The comparator circuit compares the count value output from the counter/timer circuit with the switches.

Abstract: A safety device for signaling various firing conditions for vehicles armed with guns includes an internal housing electrically connected to an external housing. Both the internal housing and the external housing have bulbs of various colors or lenses of various colors with bulbs behind the lenses. Various colors or combinations of colors are used to signal various firing conditions for the safety of personnel near a gun equipped military vehicle. The colors on the internal housing correspond to the colors on the external housing. Switches are located on the internal housing so that military personnel can produce a desired signal from the inside the gun equipped military vehicle. Each switch enables or turns "on" a light on the internal housing and the corresponding light on the external housing. This safety signaling device is most useful when military personnel have to perform exercises during the night hours.

Abstract: A vehicle signaling method and device for alerting drivers approaching from a rear of the vehicle including at least one light emitting signal arranged on an element of the vehicle facing rearward, a velocity measurement sensor for measuring an absolute velocity of the vehicle and a control unit coupled to the velocity measurement sensor for determining if the measured absolute velocity is greater than a threshold velocity. In one embodiment, there is a manual light activation unit which is connected to the control unit and the light emitting signal(s). The manual light activation unit is controlled by the control unit to enable the light emitting signal(s) to be activated only if the measured absolute velocity is less than the threshold velocity.

Abstract: A vehicle provides an indication of its rate of deceleration. In a preferred embodiment, a vehicle has a deceleration rate signal generator incorporated therein. The signal generator includes a number of inertial switches, an oscillator, and four Schmitt triggers. The signal generator may be easily retrofit into existing vehicles, or may be installed in the vehicle when it is manufactured.

Abstract: A light management system for an automotive vehicle includes vehicle sensors that collectively represent a state of the vehicle and that provide a state of the vehicle signal, vehicle sensors that collectively represent a state of the environment and that provide a state of the environment signal, a microprocessor controller which receives both the state of the vehicle signal and the state of the environment signal, the microprocessor controller provides a modified beam pattern based on the state of the vehicle signal and the state of the environment signal and then manipulates the modified beam pattern based on the state of the vehicle signal and the state of the environment signal and then provides a final light distribution signal, and a forward lighting array for receiving the final light distribution signal and illuminating a roadway thereupon.

Abstract: According to the present invention, a lighting control circuit is provided in which various logic gates, transistors and other smaller-scale circuit elements are combined. The circuit receives as inputs the control signals from the vehicle, including the left and right indicator signals, the brake signal and the tail light signal. Each of these signals is fed into a first bank of logic gates whose outputs are supplied to a second bank of logic gates, whose output is in turn supplied to two transistors, each connected to a separate single filament bulb, one for the left side of the vehicle and the other for the right side.

Abstract: A vehicle safety device (10) consisting of a warning lamp such as the rear lamps (32) of a vehicle (30), a rearward facing light detector (12) that detects a vehicle approaching from the rear, and an activator (16) for turning on the rear lamps (32). The lamps (32) remain activated for a predetermined period when the presence of an approaching vehicle is detected by the light detector (12).

Abstract: An external signal light system with two intensity levels. The system includes a dual-filament lamp bulb to alert observers that the vehicle brakes are being actuated. A power circuit connected to the vehicle storage battery provides electrical current to the bulb through a pair of serially connected switches. A first switch is closed upon actuation of the automobile's brakes. A second switch, controlled by a relay, delivers electrical current through the power circuit to either one of the bulb filaments in response to the energization state of the vehicle headlights. In the event that the headlights are energized, the second switch directs electrical current to the bulb's high wattage filament upon actuating the brakes. When the headlights are de-energized, however, electrical current is directed to the low wattage filament upon actuation of the brakes.

Abstract: A vehicular variable brake light intensity system including at least one light situated on a vehicle. Also included is a brake pedal potentiometer with a pair of contacts. The resistivity between the contacts is adapted to change as function of the motion of the brake arm during braking. Control circuitry is adapted to allow the brake lights to emit light with an intensity which is a function of the amount of deceleration in a first mode of operation. Also, in a second mode of operation, the control circuitry is adapted to actuate the light intermittently upon the deceleration surpassing a predetermined amount.

Abstract: A vehicle lighting system, for use in automobiles or trucks has a tail lamp relay, connected so electrical current flows through the vehicle battery, a tail lamp, and the tail lamp relay when the relay is on; a tail lamp switch; a battery low voltage sensor; taillamp programming means; and means for sensing that the vehicle is in operation. The system also has control circuitry that turns on the relay in the first state when the vehicle is in operation and the tail lamp switch is on, or following the vehicle ceasing operation, the taillamp programming means is on, and the battery low voltage sensing means senses a high battery voltage, but where the relay is turned off when the vehicle is not in operation and either the taillamp programming means is off, the taillamp switch is off, or the battery low voltage sensing means senses a low battery voltage.

Abstract: A display unit for presenting messages from a motor vehicle in which messages are selected for presentation based upon the number of interruptions in the power supplied to the display unit. A power supply provides power to an interrupter, which produces, within a first predetermined time frame, interruptions in the power. The power interruptions are sensed and counted, and a timer measures the first predetermined time frame in which the interruptions in the power occur. A message storage means is provided, in which is stored at least one message to be presented. A controller selects one of the stored messages for presentation, based on the number of interruptions sensed in the power and the first predetermined time frame during which the interruptions occurred, and the message is presented on a display panel. In a preferred embodiment the controller ceases the presentation of the message after a second predetermined time frame, which is most preferably about three seconds.

Abstract: A warning device for logically controlling headlights of a motor vehicle comprising a photocoupler which picks up signal voltage from a horn and triggers an astable multivibrator via a gate-controlled circuit to output a signal voltage in a predetermined time to a monostable multivibrator which outputs a continuous time-sequencing pulses to the encoding input terminal of a decoder via the gate-controlled circuit thereby causing the decoder to produce sequential output, the sequential output being divided by a multi-input gate-controlled circuit into two output voltages which are amplified by transistors to drive two relays connected with high beam and low beam thus making the high beam and low beam to give light alternately.

Abstract: An add-on electrical apparatus for causing standard automotive headlamps to project scanning effects on roadways and other terrain. The device is comprised of a control module located in the vehicle near the driver, wired to two switching modules mounted between the headlamps and the standard connectors. An on-off switch and current adjustment in the control module activates the device and adjusts the speed of the scanning effect, as an oscillator generates a train of pulses which are divided into two alternate pulse trains by a flip-flop. The pulses are amplified in order to drive a pair of solid state relays, having an adjustable bypass current, whereby as the lamp on one side of the vehicle is at full brightness, the lamp on the other side is at a reduced brightness, with said effect alternating back and forth from lamp to lamp.

Abstract: A light is dimmed by pulsing it at a selected duty cycle. By pulsing, the light can be dimmed without being turned off completely which reduces wear on the filament. The circuit is designed for flashing a pair of ditch lights on a railroad locomotive. The lights are alternately illuminated at full voltage and dimmed by pulsing. The flashing sequence can be activated when the locomotive is travelling below a selected speed or when the horn is sounded. The duration of the flashing sequence is controlled by a timer. The pulsing circuit can be used to effectively reduce a voltage without voltage dropping resistors.

Abstract: Side warning lights are provided for elongated motor vehicle such as a truck trailer or truck tanker combination. The side warning lights include first and second plurality of lights arranged on both sides of the vehicle. The lights are selectively energized so that under normal operating conditions one of the plurality of lights will be energized while under other operating conditions the other plurality of lights will be energized. The lights may be of different colors, such as red and yellow/amber. A third plurality of lights may be included which will operate in conjunction with the conventional directional turning lights of the vehicle. The purpose is to cause other drivers to perceive and respond soon to emergencies to thereby reduce collisions.

Abstract: A motor vehicle lighting system for automatically turning headlights on when a transmission is shifted from neutral or park to forward or reverse, reducing electrical loads on batteries during vehicle start-ups and automatically resetting headlights from high beam to low beam. The lighting system also includes indicators to remind drivers, while driving, that their headlight high beams, turn signals or emergency signals are turned on. The lighting system is comprised of an electronic control unit and a reset circuit. The electronic control unit receives signals from the vehicle's ignition switch and a transmission gear sensing device to control the flow of current to the exterior lighting systems. The reset circuit latches when the headlights are switched to high beam and unlatches to switch the circuits back to low beam when the vehicle is stopped and the ignition switch is turned off.

Abstract: An emergency flasher circuit for use with motor vehicles comprising an emergency switch, a signal generator for generating a signal having a frequency of approximately 10 Hz, and logic circuitry for selectively applying the signal to the headlight(s), and/or to one or both of the left and right turn indicator lights, for alerting other drivers to the presence of the motor vehicle.

Abstract: A mirror assembly is disclosed which includes a dichroic mirror which allows a predetermined narrow spectral band to pass through the mirror and be seen from a position forward of the mirror, and which further reflects a broad spectral band of light which originates from a direction forward of the mirror; a light source is positioned rearwardly of the mirror and emits light in the predetermined narrow spectral band passed by the dichroic mirror; and an electronic circuit is provided which is operable to step up, or step down the voltage supplied to the light source thereby maintaining a constant voltage source which is utilized to energize the light source.

Abstract: A "hands free" vehicle signal system for requesting drivers to dim their vehicles' bright headlights. One front and two rear signal lights are mounted on the exterior of a vehicle and when activated flash "on" and "off" in high intensity patterns. "Hands free" operation of the signalling system is accomplished by a spoken word or automatically by front and rear mounted photocells. The front and rear signal lights can be operated individually or concurrently. In the first aspect of the invention, the front and rear signal lights transmit "on and off" beams of the same intensity. In a second aspect of the invention the front and rear signal lights transmit alternating patterns of high and low intensity flashing beams. In a first operating mode, the pair of rear signal lights alternately flash "on" and "off" . In a second operating mode the pair of rear signal lights concurrently flash "on" and "off" to transmit a "thank you" message to a driver after he has dimmed his vehicle's bright headlights.

Abstract: An emergency flasher circuit for use with motorcycles and bicycles comprising an emergency switch, a signal generator for generating a signal having a frequency of approximately 10 Hz, and logic circuitry for selectively applying the signal to one or both of the left and right turn indicator lights and a headlight of a motorcycle or bicycle, for alerting drivers of motor vehicles to the presence of the motorcycle or bicycle.

Abstract: A system for improving vehicle safety and reducing driver stress by signalling drivers of oncoming vehicles and vehicles behind a vehicle to dim or turn on their vehicle's headlights. The signalling system comprises a front signalling light, a rear signalling light and a control system. The signalling lights are focused and aimed in the direction of drivers of oncoming vehicles and vehicles behind a vehicle to gain their attention without disturbing other drivers. A series of flashing light beams are transmitted in a controlled manner to distinguish the lights from other vehicle and traffic lights. The signalling system is activated by a switch which is located adjacent to a driver's hand to reduce the time for activating the system. The system has two operating states, one state where the signalling lights are timed to flash "on" and "off" for a predetermined amount of time and another state where the signalling lights flash continuously "on" and "off".

Abstract: A vehicular-borne illumination control system of the invention for vehicular use automatically controls intensity of a signal light source, i.e., center mounted brake signal, as a function of one or more safety-affecting parameters, e.g., deceleration and/or light level or other ambient condition including fog or precipitation as sensed by sensor(s) of the system. MOSFET switching controls energization of the light from vehicle power, with capability of providing different possible illumination levels by duty cycle control. A microcontroller is responsive sensor input for controlling the duty cycle to vary energization of the light source for transition between said different illumination levels. The transition is thus able to be varied according to a time-varying function, as effectively by spiked overdriving or underdriving, to compensate for human physiological inability to perceive change in the different intensity levels or states.

Abstract: A vehicle signal system for requesting drivers to dim or turn on their vehicles' headlights comprising a signal light for transmitting a high intensity flashing beam to a driver of an oncoming vehicle, a pair of signal lights for transmitting a pair of alternating flashing beams to a driver of a vehicle behind the signalling vehicle, a control unit for controlling the flashing of the high intensity beams and a driver control for activating and de-activating the front and rear signal lights. One feature of the invention is that the driver control is mounted in a day/night rear view mirror near the eye level of the driver. Another feature is that the front signal light is mounted in the forward end of an outside mirror on the side of the vehicle. The signal system has two selectable operating states. In one operating state, the front and rear signal lights automatically flash for predetermined intervals of time. In the other operating state, the signal lights flash continuously until de-activated by the driver.

Abstract: A brake signaling safety system and process is provided with a dependable sequential pressure monitoring brake light display to alert others of the relative frequency and amount of braking forces applied during braking of the vehicle. Preferably, the brake signaling safety system has a special circuit to signal a different number of brake lights for different braking forces and vehicle decelerations.

Abstract: A motor vehicle signalling system for requesting a driver of a vehicle behind another vehicle to dim his bright lights. The signalling system is low in cost, improves vehicle safety, promotes driver courtesy and is adaptable to all motor vehicle styles and models. The signalling system includes a flashing colored light mounted on the rear of the signalling vehicle and a control circuit for operating the flashing light. The signalling light is mounted in a common housing with an "eye level" stop light on a rear package tray and when operated produces a high intensity flashing beam of colored light to attract the attention of the driver of the rear vehicle. The control system has three states, a normally off state, an operating state wherein the signal light flashes for a predetermined time, and an operating state wherein the signal light flashes continuously.

Abstract: A daytime running light system employs level sensing comparators to effect reduced illuminating the high beam filaments of headlamps of a vehicle and short circuit protection to the circuit as well as to a high beam indicator circuit which only operates when the high beam filaments operate at full intensity.

Abstract: A military range safety light signaling system used on combat vehicles of e type having a freely rotatable gun turret. The signaling system is comprised of a vertical column of lights, preferably three lights from top to bottom of red, amber, and green in a regular traffic light pattern and a rotating flashing light mounted on the left rear of the gun turret. The rotating flashing light is preferably an interchangable infrared beacon mounted high above the turret for use in live fire exercise or an amber light for use in highway movement of the combat vehicle. An operator inside the combat vehicle may selectively switch on any combination of the vertical column of lights and the rotating flashing light to represent the operating status of the vehicle weapons system and its movement.

Abstract: A lamp intensity control system combines the functions of the tail light, the brake light, and the turn indicator light signals into one signal for controlling a plurality of lamps in an automobile. The tail light, brake light and turn indicator light signals are combined into one signal and modulated wherein the percent of modulation determines the intensity of the brightness of the plurality of lamps. Temperature protection is provided wherein a temperature limit circuit monitors the temperature of a SENSFET and disables the SENSFET if its temperature exceeds a predetermined magnitude. Over-current and open lamp conditions are monitored by comparator circuits. An over-current condition causes the SENSFET to be disabled. An over-temperature, over-current or open-lamp condition is signaled by a fault output signal.

Abstract: A vehicle brake light and display system employs a display screen having an array of light emitting diodes arranged to transmit a selected pattern or message in red light. A fixed or programmable memory has sets of data stored therein that can be selectively extracted to energize certain of the light emitting elements and display a single line of a selected message. Upon actuation of the brake of the vehicle in which the display screen is mounted, display of the message is disabled, and all of the light emitting elements are energized to provide a solid display of red over the entire screen. As a further safety feature, the display is maintained in a disable condition until initial application of the brake, and thereafter subsequent applications of the brake will cause display of the brake light over the entire display panel.

Abstract: A vehicle multiplex system includes a controller and a number of remote stations connected to the controller by a control bus. The controller receives multiplexed signals indicative of the desired operation of loads such as headlamps and motors. In order to obtain reduced intensity headlamp operation or reduced speed of a continuous DC motor, the controller automatically connects and disconnects the headlamp or motor and a DC power source with a selected duty cycle. The period of repetition is sufficiently small to prevent perceptible flicker or fluctuation in motor speed. In this way, headlamp intensity and motor speed can be varied as desired, without increasing the hardware requirements of the system.

Abstract: A rear mounted, brake light assembly which includes, inter alia, brake lights, back-up lights, turn signals and a signal for indicating that a following vehicle has its high beam or bright lights on.

Abstract: A base adapted to be mounted on a vehicle supports a light source for generating a rotating light beam. A dome-shaped lens is positioned on the base over the light source to form an enclosure for the light source. A coating may be located on the top of the lens to prevent light passing therethrough and into the passenger compartment. Multiple flashes are created by a reflector positioned adjacent the rear portion of the lens to reflect the rotating beam as a plurality of discrete flashes within a sector relative to the base. A filter generally having a contour of the front portion of the lens may be mounted thereon. The multiple flashes may be of different colors depending on the range of wavelength of light transmitted by the lens and filter and reflected by the reflector. A person viewing the light sees at least four discrete flashes of light which may be of varying colors.